Commit Graph

1773 Commits

Author SHA1 Message Date
Linus Torvalds
ea44a160e6 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu fixes from Greg Ungerer:
 "Nothing big, only a small collection of minor cleanups/fixes"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  arch: m68k: 68360: config: Remove unused function
  m68knommu: fix irq handler types in 68360/commproc.c
  m68k: remove check for CONFIG_BSEIP
2015-02-16 14:56:01 -08:00
Andy Lutomirski
f56141e3e2 all arches, signal: move restart_block to struct task_struct
If an attacker can cause a controlled kernel stack overflow, overwriting
the restart block is a very juicy exploit target.  This is because the
restart_block is held in the same memory allocation as the kernel stack.

Moving the restart block to struct task_struct prevents this exploit by
making the restart_block harder to locate.

Note that there are other fields in thread_info that are also easy
targets, at least on some architectures.

It's also a decent simplification, since the restart code is more or less
identical on all architectures.

[james.hogan@imgtec.com: metag: align thread_info::supervisor_stack]
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: David Miller <davem@davemloft.net>
Acked-by: Richard Weinberger <richard@nod.at>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Tested-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Chen Liqin <liqin.linux@gmail.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-12 18:54:12 -08:00
Kirill A. Shutemov
d016bf7ece mm: make FIRST_USER_ADDRESS unsigned long on all archs
LKP has triggered a compiler warning after my recent patch "mm: account
pmd page tables to the process":

    mm/mmap.c: In function 'exit_mmap':
 >> mm/mmap.c:2857:2: warning: right shift count >= width of type [enabled by default]

The code:

 > 2857                WARN_ON(mm_nr_pmds(mm) >
   2858                                round_up(FIRST_USER_ADDRESS, PUD_SIZE) >> PUD_SHIFT);

In this, on tile, we have FIRST_USER_ADDRESS defined as 0.  round_up() has
the same type -- int.  PUD_SHIFT.

I think the best way to fix it is to define FIRST_USER_ADDRESS as unsigned
long.  On every arch for consistency.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-11 17:06:03 -08:00
Linus Torvalds
992de5a8ec Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton:
 "Bite-sized chunks this time, to avoid the MTA ratelimiting woes.

   - fs/notify updates

   - ocfs2

   - some of MM"

That laconic "some MM" is mainly the removal of remap_file_pages(),
which is a big simplification of the VM, and which gets rid of a *lot*
of random cruft and special cases because we no longer support the
non-linear mappings that it used.

From a user interface perspective, nothing has changed, because the
remap_file_pages() syscall still exists, it's just done by emulating the
old behavior by creating a lot of individual small mappings instead of
one non-linear one.

The emulation is slower than the old "native" non-linear mappings, but
nobody really uses or cares about remap_file_pages(), and simplifying
the VM is a big advantage.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (78 commits)
  memcg: zap memcg_slab_caches and memcg_slab_mutex
  memcg: zap memcg_name argument of memcg_create_kmem_cache
  memcg: zap __memcg_{charge,uncharge}_slab
  mm/page_alloc.c: place zone_id check before VM_BUG_ON_PAGE check
  mm: hugetlb: fix type of hugetlb_treat_as_movable variable
  mm, hugetlb: remove unnecessary lower bound on sysctl handlers"?
  mm: memory: merge shared-writable dirtying branches in do_wp_page()
  mm: memory: remove ->vm_file check on shared writable vmas
  xtensa: drop _PAGE_FILE and pte_file()-related helpers
  x86: drop _PAGE_FILE and pte_file()-related helpers
  unicore32: drop pte_file()-related helpers
  um: drop _PAGE_FILE and pte_file()-related helpers
  tile: drop pte_file()-related helpers
  sparc: drop pte_file()-related helpers
  sh: drop _PAGE_FILE and pte_file()-related helpers
  score: drop _PAGE_FILE and pte_file()-related helpers
  s390: drop pte_file()-related helpers
  parisc: drop _PAGE_FILE and pte_file()-related helpers
  openrisc: drop _PAGE_FILE and pte_file()-related helpers
  nios2: drop _PAGE_FILE and pte_file()-related helpers
  ...
2015-02-10 16:45:56 -08:00
Kirill A. Shutemov
1eeda0abf4 m68k: drop _PAGE_FILE and pte_file()-related helpers
We've replaced remap_file_pages(2) implementation with emulation.  Nobody
creates non-linear mapping anymore.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-10 14:30:32 -08:00
Linus Torvalds
ab0475df5c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven:
 "Summary:

  - switch to asm-generic/futex.h

  - various cleanups

  - defconfig updates"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/defconfig: Enable Ethernet bridging
  m68k/defconfig: Enable Atari EtherNAT and EtherNEC Ethernet support
  m68k/defconfig: Enable automounting of devtmpfs at /dev
  m68k/defconfig: Enable early printk support
  m68k/defconfig: Enable test modules
  m68k/defconfig: Refresh defconfigs for v3.16-rc1--v3.19-rc2
  m68k/atari: Remove obsolete IRQ_TYPE_*
  sound: dmasound_atari: Remove obsolete IRQ_TYPE_SLOW
  video: atafb: Remove obsolete IRQ_TYPE_PRIO
  parport: parport_atari: Remove obsolete IRQ_TYPE_SLOW
  net: atarilance: Remove obsolete IRQ_TYPE_PRIO
  m68k/atari: Remove obsolete keyboard_tasklet scheduling
  m68k/mac: Fix scsi_type for Mac LC and similar models
  m68k: Switch to asm-generic/futex.h
  m68k/mvme147: config.c - Remove unused functions
  m68k/atari: atakeyb.c - Remove some unused functions
  m68k/mvme16x: rtc - Don't use module_init in non-modular code
2015-02-10 13:27:24 -08:00
Rickard Strandqvist
21b30ca5da arch: m68k: 68360: config: Remove unused function
Remove the function BSP_set_clock_mmss() that is not used anywhere.

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2015-02-03 14:16:23 +10:00
Greg Ungerer
7372eefc15 m68knommu: fix irq handler types in 68360/commproc.c
Compilation of arch/m68k/68360/commproc.c fails with the following errors:

arch/m68k/68360/commproc.c:75:1: error: function declaration isn’t a prototype
arch/m68k/68360/commproc.c:211:1: error: function declaration isn’t a prototype
arch/m68k/68360/commproc.c: In function ‘cpm_install_handler’:
arch/m68k/68360/commproc.c:214:2: warning: passing argument 2 of ‘request_irq’ from incompatible pointer type
include/linux/interrupt.h:128:1: note: expected ‘irq_handler_t’ but argument is of type ‘void (*)()’

It should be using the proper irq hander type, irq_handler_t. Modify it
to use that.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2015-02-03 14:16:23 +10:00
Paul Bolle
ef0012b48c m68k: remove check for CONFIG_BSEIP
There used to be a Kconfig symbol BSEIP. It was PPC specific and was
removed in v2.6.27. So the check for CONFIG_BSEIP can be removed. This
means a few defines will be removed. None of the macros involved are
used, so no one should care.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2015-02-03 14:16:23 +10:00
Geert Uytterhoeven
4436820a98 m68k/defconfig: Enable Ethernet bridging
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-31 15:00:59 +01:00
Geert Uytterhoeven
9a10555c69 m68k/defconfig: Enable Atari EtherNAT and EtherNEC Ethernet support
Enable support for Atari EtherNAT (SMC91X) and EtherNEC (NE2000)
Ethernet support in the Atari and multiplatform defconfig files.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-31 15:00:59 +01:00
Geert Uytterhoeven
d3125afbe2 m68k/defconfig: Enable automounting of devtmpfs at /dev
Enable CONFIG_DEVTMPFS_MOUNT, as it's useful for initrd-less kernels.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-31 15:00:59 +01:00
Geert Uytterhoeven
42a6ab99ab m68k/defconfig: Enable early printk support
Enable CONFIG_EARLY_PRINTK on all platforms where it's available (all
but Sun-3) and not yet enabled.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-31 15:00:59 +01:00
Geert Uytterhoeven
f61940602b m68k/defconfig: Enable test modules
It doesn't hurt to have CONFIG_TEST_* enabled as modules.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-31 15:00:59 +01:00
Geert Uytterhoeven
d5264e2f5c m68k/defconfig: Refresh defconfigs for v3.16-rc1--v3.19-rc2
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-31 15:00:59 +01:00
Linus Torvalds
33692f2759 vm: add VM_FAULT_SIGSEGV handling support
The core VM already knows about VM_FAULT_SIGBUS, but cannot return a
"you should SIGSEGV" error, because the SIGSEGV case was generally
handled by the caller - usually the architecture fault handler.

That results in lots of duplication - all the architecture fault
handlers end up doing very similar "look up vma, check permissions, do
retries etc" - but it generally works.  However, there are cases where
the VM actually wants to SIGSEGV, and applications _expect_ SIGSEGV.

In particular, when accessing the stack guard page, libsigsegv expects a
SIGSEGV.  And it usually got one, because the stack growth is handled by
that duplicated architecture fault handler.

However, when the generic VM layer started propagating the error return
from the stack expansion in commit fee7e49d45 ("mm: propagate error
from stack expansion even for guard page"), that now exposed the
existing VM_FAULT_SIGBUS result to user space.  And user space really
expected SIGSEGV, not SIGBUS.

To fix that case, we need to add a VM_FAULT_SIGSEGV, and teach all those
duplicate architecture fault handlers about it.  They all already have
the code to handle SIGSEGV, so it's about just tying that new return
value to the existing code, but it's all a bit annoying.

This is the mindless minimal patch to do this.  A more extensive patch
would be to try to gather up the mostly shared fault handling logic into
one generic helper routine, and long-term we really should do that
cleanup.

Just from this patch, you can generally see that most architectures just
copied (directly or indirectly) the old x86 way of doing things, but in
the meantime that original x86 model has been improved to hold the VM
semaphore for shorter times etc and to handle VM_FAULT_RETRY and other
"newer" things, so it would be a good idea to bring all those
improvements to the generic case and teach other architectures about
them too.

Reported-and-tested-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Jan Engelhardt <jengelh@inai.de>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> # "s390 still compiles and boots"
Cc: linux-arch@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-01-29 10:51:32 -08:00
Geert Uytterhoeven
87511d0920 m68k/atari: Remove obsolete IRQ_TYPE_*
IRQ_TYPE_SLOW, IRQ_TYPE_FAST, and IRQ_TYPE_PRIO are no longer used by
the Atari platform interrupt code since commit 734085651c
("[PATCH] m68k: convert atari irq code") in v2.6.18-rc1, so drop them.

Note that their values have been reused for different purposes
(IRQ_TYPE_NONE, IRQ_TYPE_EDGE_RISING, and IRQ_TYPE_EDGE_FALLING) since
commit 6a6de9ef58 ("[PATCH] genirq: core") in v2.6.18-rc1.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-15 13:44:51 +01:00
Michael S. Tsirkin
e9e6d91855 m68k: macro whitespace fixes
While working on arch/m68k/include/asm/uaccess.h, I noticed
that one macro within this header is made harder to read because it
violates a coding style rule: space is missing after comma.

Fix it up.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-13 15:24:03 +02:00
Michael S. Tsirkin
09a2f7cf6a m68k/uaccess: fix sparse errors
virtio wants to read bitwise types from userspace using get_user.  At the
moment this triggers sparse errors, since the value is passed through an
integer.

Fix that up using __force.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-13 15:23:28 +02:00
Geert Uytterhoeven
e69229f2eb m68k/atari: Remove obsolete keyboard_tasklet scheduling
If CONFIG_VT=n:

arch/m68k/atari/built-in.o: In function `atari_keyboard_interrupt':
atakeyb.c:(.text+0x1846): undefined reference to `keyboard_tasklet'
atakeyb.c:(.text+0x1852): undefined reference to `keyboard_tasklet'

I think the keyboard_tasklet scheduling is no longer needed, as I
believe it's handled by drivers/tty/vt/keyboard.c based on events
received from the input subsystem. So just remove it.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Michael Schmitz <schmitz@debian.org>
2015-01-13 09:44:17 +01:00
Finn Thain
2e874d178c m68k/mac: Fix scsi_type for Mac LC and similar models
Designing Cards and Drivers for the Macintosh Family, 3rd ed. on page 310
says that the I/O address space for the Mac LC is $50F0 0000 - $50FF FFFF.
The developer notes for the Classic II, LC III and IIvx/IIvi give the same
I/O address space.

That means I've assigned the wrong platform resources to those Mac models.
Fix the scsi_type initialization for the affected models, to restore the
SCSI base address to its value prior to Linux 3.18.

Also rename MAC_SCSI_CCL as MAC_SCSI_LC for the sake of correct chronology.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-11 11:38:46 +01:00
Geert Uytterhoeven
8c0ce284b3 m68k: Switch to asm-generic/futex.h
As of commit 00f634bc52 ("asm-generic: add generic futex for
!CONFIG_SMP") asm-generic follows the m68k futex implementation.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-11 11:38:45 +01:00
Rickard Strandqvist
a38eaa07a0 m68k/mvme147: config.c - Remove unused functions
Remove the function mvme147_init_console_port() that is not used
anywhere.

This was partially found by using a static code analysis program called
cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
[geert: Also remove now unused m147_scc_write(), scc_write(), scc_delay()]
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-11 11:38:45 +01:00
Rickard Strandqvist
23b9421026 m68k/atari: atakeyb.c - Remove some unused functions
Remove some functions that are not used anywhere:
atari_kbd_leds() ikbd_exec() ikbd_mem_read() ikbd_mem_write()
ikbd_clock_get() ikbd_clock_set() ikbd_pause() ikbd_resume()

This was partially found by using a static code analysis program called
cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-11 11:38:44 +01:00
Paul Gortmaker
51ad77ada1 m68k/mvme16x: rtc - Don't use module_init in non-modular code
The rtc.o is built for obj-y, i.e. always built in.  It will
never be modular, so using module_init as an alias for __initcall
can be somewhat misleading.

Fix this up now, so that we can relocate module_init from
init.h into module.h in the future.  If we don't do this, we'd
have to add module.h to obviously non-modular code, and that
would be a worse thing.

Note that direct use of __initcall is discouraged, vs. one
of the priority categorized subgroups.  As __initcall gets
mapped onto device_initcall, our use of device_initcall
directly in this change means that the runtime impact is
zero -- it will remain at level 6 in initcall ordering.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-11 11:38:41 +01:00
Geert Uytterhoeven
f27bd5bfed m68k: Wire up execveat
Check success of execveat(3, '../execveat', 0)... [OK]
Check success of execveat(5, 'execveat', 0)... [OK]
Check success of execveat(6, 'execveat', 0)... [OK]
Check success of execveat(-100, '/root/selftest-exec/exec/execveat', 0)... [OK]
Check success of execveat(99, '/root/selftest-exec/exec/execveat', 0)... [OK]
Check success of execveat(8, '', 4096)... [OK]
Check success of execveat(17, '', 4096)... [OK]
Check success of execveat(9, '', 4096)... [OK]
Check success of execveat(14, '', 4096)... [OK]
Check success of execveat(14, '', 4096)... [OK]
Check success of execveat(15, '', 4096)... [OK]
Check failure of execveat(8, '', 0) with ENOENT... [OK]
Check failure of execveat(8, '(null)', 4096) with EFAULT... [OK]
Check success of execveat(5, 'execveat.symlink', 0)... [OK]
Check success of execveat(6, 'execveat.symlink', 0)... [OK]
Check success of execveat(-100, '/root/selftest-exec/...xec/execveat.symlink', 0)... [OK]
Check success of execveat(10, '', 4096)... [OK]
Check success of execveat(10, '', 4352)... [OK]
Check failure of execveat(5, 'execveat.symlink', 256) with ELOOP... [OK]
Check failure of execveat(6, 'execveat.symlink', 256) with ELOOP... [OK]
Check failure of execveat(-100, '/root/selftest-exec/exec/execveat.symlink', 256) with ELOOP... [OK]
Check success of execveat(3, '../script', 0)... [OK]
Check success of execveat(5, 'script', 0)... [OK]
Check success of execveat(6, 'script', 0)... [OK]
Check success of execveat(-100, '/root/selftest-exec/exec/script', 0)... [OK]
Check success of execveat(13, '', 4096)... [OK]
Check success of execveat(13, '', 4352)... [OK]
Check failure of execveat(18, '', 4096) with ENOENT... [OK]
Check failure of execveat(7, 'script', 0) with ENOENT... [OK]
Check success of execveat(16, '', 4096)... [OK]
Check success of execveat(16, '', 4096)... [OK]
Check success of execveat(4, '../script', 0)... [OK]
Check success of execveat(4, 'script', 0)... [OK]
Check success of execveat(4, '../script', 0)... [OK]
Check failure of execveat(4, 'script', 0) with ENOENT... [OK]
Check failure of execveat(5, 'execveat', 65535) with EINVAL... [OK]
Check failure of execveat(5, 'no-such-file', 0) with ENOENT... [OK]
Check failure of execveat(6, 'no-such-file', 0) with ENOENT... [OK]
Check failure of execveat(-100, 'no-such-file', 0) with ENOENT... [OK]
Check failure of execveat(5, '', 4096) with EACCES... [OK]
Check failure of execveat(5, 'Makefile', 0) with EACCES... [OK]
Check failure of execveat(11, '', 4096) with EACCES... [OK]
Check failure of execveat(12, '', 4096) with EACCES... [OK]
Check failure of execveat(99, '', 4096) with EBADF... [OK]
Check failure of execveat(99, 'execveat', 0) with EBADF... [OK]
Check failure of execveat(8, 'execveat', 0) with ENOTDIR... [OK]
Invoke copy of 'execveat' via filename of length 4093:
Check success of execveat(19, '', 4096)... [OK]
Check success of execveat(5, 'xxxxxxxxxxxxxxxxxxxx...yyyyyyyyyyyyyyyyyyyy', 0)... [OK]
Invoke copy of 'script' via filename of length 4093:
Check success of execveat(20, '', 4096)... [OK]
Check success of execveat(5, 'xxxxxxxxxxxxxxxxxxxx...yyyyyyyyyyyyyyyyyyyy', 0)... [OK]

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2015-01-11 11:14:14 +01:00
Linus Torvalds
70e71ca0af Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:

 1) New offloading infrastructure and example 'rocker' driver for
    offloading of switching and routing to hardware.

    This work was done by a large group of dedicated individuals, not
    limited to: Scott Feldman, Jiri Pirko, Thomas Graf, John Fastabend,
    Jamal Hadi Salim, Andy Gospodarek, Florian Fainelli, Roopa Prabhu

 2) Start making the networking operate on IOV iterators instead of
    modifying iov objects in-situ during transfers.  Thanks to Al Viro
    and Herbert Xu.

 3) A set of new netlink interfaces for the TIPC stack, from Richard
    Alpe.

 4) Remove unnecessary looping during ipv6 routing lookups, from Martin
    KaFai Lau.

 5) Add PAUSE frame generation support to gianfar driver, from Matei
    Pavaluca.

 6) Allow for larger reordering levels in TCP, which are easily
    achievable in the real world right now, from Eric Dumazet.

 7) Add a variable of napi_schedule that doesn't need to disable cpu
    interrupts, from Eric Dumazet.

 8) Use a doubly linked list to optimize neigh_parms_release(), from
    Nicolas Dichtel.

 9) Various enhancements to the kernel BPF verifier, and allow eBPF
    programs to actually be attached to sockets.  From Alexei
    Starovoitov.

10) Support TSO/LSO in sunvnet driver, from David L Stevens.

11) Allow controlling ECN usage via routing metrics, from Florian
    Westphal.

12) Remote checksum offload, from Tom Herbert.

13) Add split-header receive, BQL, and xmit_more support to amd-xgbe
    driver, from Thomas Lendacky.

14) Add MPLS support to openvswitch, from Simon Horman.

15) Support wildcard tunnel endpoints in ipv6 tunnels, from Steffen
    Klassert.

16) Do gro flushes on a per-device basis using a timer, from Eric
    Dumazet.  This tries to resolve the conflicting goals between the
    desired handling of bulk vs.  RPC-like traffic.

17) Allow userspace to ask for the CPU upon what a packet was
    received/steered, via SO_INCOMING_CPU.  From Eric Dumazet.

18) Limit GSO packets to half the current congestion window, from Eric
    Dumazet.

19) Add a generic helper so that all drivers set their RSS keys in a
    consistent way, from Eric Dumazet.

20) Add xmit_more support to enic driver, from Govindarajulu
    Varadarajan.

21) Add VLAN packet scheduler action, from Jiri Pirko.

22) Support configurable RSS hash functions via ethtool, from Eyal
    Perry.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1820 commits)
  Fix race condition between vxlan_sock_add and vxlan_sock_release
  net/macb: fix compilation warning for print_hex_dump() called with skb->mac_header
  net/mlx4: Add support for A0 steering
  net/mlx4: Refactor QUERY_PORT
  net/mlx4_core: Add explicit error message when rule doesn't meet configuration
  net/mlx4: Add A0 hybrid steering
  net/mlx4: Add mlx4_bitmap zone allocator
  net/mlx4: Add a check if there are too many reserved QPs
  net/mlx4: Change QP allocation scheme
  net/mlx4_core: Use tasklet for user-space CQ completion events
  net/mlx4_core: Mask out host side virtualization features for guests
  net/mlx4_en: Set csum level for encapsulated packets
  be2net: Export tunnel offloads only when a VxLAN tunnel is created
  gianfar: Fix dma check map error when DMA_API_DEBUG is enabled
  cxgb4/csiostor: Don't use MASTER_MUST for fw_hello call
  net: fec: only enable mdio interrupt before phy device link up
  net: fec: clear all interrupt events to support i.MX6SX
  net: fec: reset fep link status in suspend function
  net: sock: fix access via invalid file descriptor
  net: introduce helper macro for_each_cmsghdr
  ...
2014-12-11 14:27:06 -08:00
Daniel Borkmann
0cb6c969ed net, lib: kill arch_fast_hash library bits
As there are now no remaining users of arch_fast_hash(), lets kill
it entirely.

This basically reverts commit 71ae8aac3e ("lib: introduce arch
optimized hash library") and follow-up work, that is f.e., commit
237217546d ("lib: hash: follow-up fixups for arch hash"),
commit e3fec2f74f ("lib: Add missing arch generic-y entries for
asm-generic/hash.h") and last but not least commit 6a02652df5
("perf tools: Fix include for non x86 architectures").

Cc: Francesco Fusco <fusco@ntop.org>
Cc: Thomas Graf <tgraf@suug.ch>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-10 15:17:46 -05:00
Linus Torvalds
a0e4467726 asm-generic: asm/io.h rewrite
While there normally is no reason to have a pull request for asm-generic
 but have all changes get merged through whichever tree needs them, I do
 have a series for 3.19. There are two sets of patches that change
 significant portions of asm/io.h, and this branch contains both in order
 to resolve the conflicts:
 
 - Will Deacon has done a set of patches to ensure that all architectures
   define {read,write}{b,w,l,q}_relaxed() functions or get them by
   including asm-generic/io.h. These functions are commonly used on ARM
   specific drivers to avoid expensive L2 cache synchronization implied by
   the normal {read,write}{b,w,l,q}, but we need to define them on all
   architectures in order to share the drivers across architectures and
   to enable CONFIG_COMPILE_TEST configurations for them
 
 - Thierry Reding has done an unrelated set of patches that extends
   the asm-generic/io.h file to the degree necessary to make it useful
   on ARM64 and potentially other architectures.
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Merge tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic asm/io.h rewrite from Arnd Bergmann:
 "While there normally is no reason to have a pull request for
  asm-generic but have all changes get merged through whichever tree
  needs them, I do have a series for 3.19.

  There are two sets of patches that change significant portions of
  asm/io.h, and this branch contains both in order to resolve the
  conflicts:

   - Will Deacon has done a set of patches to ensure that all
     architectures define {read,write}{b,w,l,q}_relaxed() functions or
     get them by including asm-generic/io.h.

     These functions are commonly used on ARM specific drivers to avoid
     expensive L2 cache synchronization implied by the normal
     {read,write}{b,w,l,q}, but we need to define them on all
     architectures in order to share the drivers across architectures
     and to enable CONFIG_COMPILE_TEST configurations for them

   - Thierry Reding has done an unrelated set of patches that extends
     the asm-generic/io.h file to the degree necessary to make it useful
     on ARM64 and potentially other architectures"

* tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (29 commits)
  ARM64: use GENERIC_PCI_IOMAP
  sparc: io: remove duplicate relaxed accessors on sparc32
  ARM: sa11x0: Use void __iomem * in MMIO accessors
  arm64: Use include/asm-generic/io.h
  ARM: Use include/asm-generic/io.h
  asm-generic/io.h: Implement generic {read,write}s*()
  asm-generic/io.h: Reconcile I/O accessor overrides
  /dev/mem: Use more consistent data types
  Change xlate_dev_{kmem,mem}_ptr() prototypes
  ARM: ixp4xx: Properly override I/O accessors
  ARM: ixp4xx: Fix build with IXP4XX_INDIRECT_PCI
  ARM: ebsa110: Properly override I/O accessors
  ARC: Remove redundant PCI_IOBASE declaration
  documentation: memory-barriers: clarify relaxed io accessor semantics
  x86: io: implement dummy relaxed accessor macros for writes
  tile: io: implement dummy relaxed accessor macros for writes
  sparc: io: implement dummy relaxed accessor macros for writes
  powerpc: io: implement dummy relaxed accessor macros for writes
  parisc: io: implement dummy relaxed accessor macros for writes
  mn10300: io: implement dummy relaxed accessor macros for writes
  ...
2014-12-09 17:25:00 -08:00
Linus Torvalds
50569687e9 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/mm: Eliminate memset after alloc_bootmem_pages
  nubus: Remove superfluous interrupt disable/restore
2014-12-09 13:04:59 -08:00
Finn Thain
0d31f87591 sun3_scsi: Convert to platform device
Convert sun3_scsi to platform device and eliminate scsi_register().

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20 09:11:15 +01:00
Finn Thain
3ff228af84 atari_scsi: Convert to platform device
Convert atari_scsi to platform device and eliminate scsi_register().

Validate __setup options later on so that module options are checked as well.

Remove the comment about the scsi mid-layer disabling the host irq as it
is no longer true (AFAICT). Also remove the obsolete slow interrupt stuff
(IRQ_TYPE_SLOW == 0 anyway).

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20 09:11:14 +01:00
Finn Thain
16b29e75a7 atari_scsi: Fix atari_scsi deadlocks on Falcon
Don't disable irqs when waiting for the ST DMA "lock"; its release may
require an interrupt.

Introduce stdma_try_lock() for use in soft irq context. atari_scsi now tells
the SCSI mid-layer to defer queueing a command if the ST DMA lock is not
available, as per Michael's patch:
http://marc.info/?l=linux-m68k&m=139095335824863&w=2

The falcon_got_lock variable is race prone: we can't disable IRQs while
waiting to acquire the lock, so after acquiring it there must be some
interval during which falcon_got_lock remains false. Introduce
stdma_is_locked_by() to replace falcon_got_lock.

The falcon_got_lock tests in the EH handlers are incorrect these days. It
can happen that an EH handler is called after a command completes normally.
Remove these checks along with falcon_got_lock.

Also remove the complicated and racy fairness wait queues. If fairness is an
issue (when SCSI competes with IDE for the ST DMA interrupt), the solution
is likely to be a lower value for host->can_queue.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20 09:11:13 +01:00
Finn Thain
cbad48deb3 mac_scsi: Convert to platform device
Convert mac_scsi to platform device and eliminate scsi_register().

Platform resources for chip registers now follow the documentation. This
should fix issues with the Mac IIci (and possibly other models too).

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20 09:11:13 +01:00
Himangi Saraogi
f0b99a643e m68k/mm: Eliminate memset after alloc_bootmem_pages
alloc_bootmem and related functions always return a zeroed region of memory.
Thus a memset after calls to these functions is unnecessary.

The following Coccinelle semantic patch was used for making the change:

@@
expression E,E1;
@@

E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\)(...)
... when != E
- memset(E,0,E1);

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-11-10 09:56:44 +01:00
Geert Uytterhoeven
f7bbd12a4b m68k: Wire up bpf
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
2014-10-27 11:02:19 +01:00
Will Deacon
88a9192e21 m68k: io: implement dummy relaxed accessor macros for writes
write{b,w,l}_relaxed are implemented by some architectures in order to
permit memory-mapped I/O accesses with weaker barrier semantics than the
non-relaxed variants.

This patch adds dummy macros for the write accessors to m68k, in the
same vein as the dummy definitions for the relaxed read accessors.
Additionally, the existing relaxed read accessors are moved into
asm/io.h, so that they can be used by m68k targets with an MMU.

Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-10-20 18:49:18 +01:00
Linus Torvalds
a45d572841 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu update from Greg Ungerer:
 "The major change is to remove the arch/m68k/platform directory.  The
  coldfire (and other non-mmu m68k platform) code is moved to the
  arch/m68k level, making them consistent with the traditional m68k
  platforms.

  A couple of other minor miscellaneous fixes as well"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: Fix typo 'COFNIG_MBAR'
  m68knommu: add missing ioport_map() and ioport_unmap()
  m68k/coldfire: remove second asm/mcfclk.h inclusion in m54xx.c
  m68knommu: fix size of address field for 5272 interrupt controller
  m68k: fix crufty 68000 and 68360 intro comments
  m68k: remove the unused arch/m68k/platform directory
  m68k: move non-mmu 68360 platform code
  m68k: move non-mmu 68000 platform code
  m68k: fix crufty ColdFire intro comments
  m68k: move coldfire platform code
2014-10-14 03:51:22 +02:00
Linus Torvalds
dbb885fecc Merge branch 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull arch atomic cleanups from Ingo Molnar:
 "This is a series kept separate from the main locking tree, which
  cleans up and improves various details in the atomics type handling:

   - Remove the unused atomic_or_long() method

   - Consolidate and compress atomic ops implementations between
     architectures, to reduce linecount and to make it easier to add new
     ops.

   - Rewrite generic atomic support to only require cmpxchg() from an
     architecture - generate all other methods from that"

* 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read()
  locking, mips: Fix atomics
  locking, sparc64: Fix atomics
  locking,arch: Rewrite generic atomic support
  locking,arch,xtensa: Fold atomic_ops
  locking,arch,sparc: Fold atomic_ops
  locking,arch,sh: Fold atomic_ops
  locking,arch,powerpc: Fold atomic_ops
  locking,arch,parisc: Fold atomic_ops
  locking,arch,mn10300: Fold atomic_ops
  locking,arch,mips: Fold atomic_ops
  locking,arch,metag: Fold atomic_ops
  locking,arch,m68k: Fold atomic_ops
  locking,arch,m32r: Fold atomic_ops
  locking,arch,ia64: Fold atomic_ops
  locking,arch,hexagon: Fold atomic_ops
  locking,arch,cris: Fold atomic_ops
  locking,arch,avr32: Fold atomic_ops
  locking,arch,arm64: Fold atomic_ops
  locking,arch,arm: Fold atomic_ops
  ...
2014-10-13 15:48:00 +02:00
Davidlohr Bueso
cd2567b685 m68k: call find_vma with the mmap_sem held in sys_cacheflush()
Performing vma lookups without taking the mm->mmap_sem is asking for
trouble.  While doing the search, the vma in question can be modified or
even removed before returning to the caller.  Take the lock (shared) in
order to avoid races while iterating through the vmacache and/or rbtree.
In addition, this guarantees that the address space will remain intact
during the CPU flushing.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09 22:26:02 -04:00
Linus Torvalds
afa3536be8 Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Ingo Molnar:
 "Main changes:

  - Fix the deadlock reported by Dave Jones et al
  - Clean up and fix nohz_full interaction with arch abilities
  - nohz init code consolidation/cleanup"

* 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  nohz: nohz full depends on irq work self IPI support
  nohz: Consolidate nohz full init code
  arm64: Tell irq work about self IPI support
  arm: Tell irq work about self IPI support
  x86: Tell irq work about self IPI support
  irq_work: Force raised irq work to run on irq work interrupt
  irq_work: Introduce arch_irq_work_has_interrupt()
  nohz: Move nohz full init call to tick init
2014-10-09 06:30:57 -04:00
Linus Torvalds
0223f9aaef Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven:
 "Summary:
  - a fix for an intermittent crash in macsonic and hilkbd, marked for
    stable,
  - build fixes for uncommon configs.

  Note: "m68k: AMIGA_BUILTIN_SERIAL should depend on TTY" was also
  picked up by GregKH for his TTY/Serial patches tree"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Reformat arch/m68k/mm/hwtest.c
  m68k: Disable/restore interrupts in hwreg_present()/hwreg_write()
  m68k: AMIGA_BUILTIN_SERIAL should depend on TTY
  m68k: Add missing ioport_unmap()
  m68k/atari - stram: Add missing #include <linux/ioport.h>
2014-10-08 05:40:17 -04:00
Linus Torvalds
28596c9722 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull "trivial tree" updates from Jiri Kosina:
 "Usual pile from trivial tree everyone is so eagerly waiting for"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
  Remove MN10300_PROC_MN2WS0038
  mei: fix comments
  treewide: Fix typos in Kconfig
  kprobes: update jprobe_example.c for do_fork() change
  Documentation: change "&" to "and" in Documentation/applying-patches.txt
  Documentation: remove obsolete pcmcia-cs from Changes
  Documentation: update links in Changes
  Documentation: Docbook: Fix generated DocBook/kernel-api.xml
  score: Remove GENERIC_HAS_IOMAP
  gpio: fix 'CONFIG_GPIO_IRQCHIP' comments
  tty: doc: Fix grammar in serial/tty
  dma-debug: modify check_for_stack output
  treewide: fix errors in printk
  genirq: fix reference in devm_request_threaded_irq comment
  treewide: fix synchronize_rcu() in comments
  checkstack.pl: port to AArch64
  doc: queue-sysfs: minor fixes
  init/do_mounts: better syntax description
  MIPS: fix comment spelling
  powerpc/simpleboot: fix comment
  ...
2014-10-07 21:16:26 -04:00
Geert Uytterhoeven
24cae7934c m68k: Reformat arch/m68k/mm/hwtest.c
No functional changes

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-10-03 10:50:56 +02:00
Geert Uytterhoeven
e4dc601bf9 m68k: Disable/restore interrupts in hwreg_present()/hwreg_write()
hwreg_present() and hwreg_write() temporarily change the VBR register to
another vector table. This table contains a valid bus error handler
only, all other entries point to arbitrary addresses.

If an interrupt comes in while the temporary table is active, the
processor will start executing at such an arbitrary address, and the
kernel will crash.

While most callers run early, before interrupts are enabled, or
explicitly disable interrupts, Finn Thain pointed out that macsonic has
one callsite that doesn't, causing intermittent boot crashes.
There's another unsafe callsite in hilkbd.

Fix this for good by disabling and restoring interrupts inside
hwreg_present() and hwreg_write().

Explicitly disabling interrupts can be removed from the callsites later.

Reported-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: stable@vger.kernel.org
2014-10-03 10:50:56 +02:00
Pranith Kumar
2291059c85 locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read()
Use the much more reader friendly ACCESS_ONCE() instead of the cast to volatile.
This is purely a stylistic change.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-arch@vger.kernel.org
Link: http://lkml.kernel.org/r/1411482607-20948-1-git-send-email-bobby.prani@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-10-03 06:06:23 +02:00
Paul Bolle
e803d4bd31 m68k: Fix typo 'COFNIG_MBAR'
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-09-29 09:56:19 +10:00
Greg Ungerer
f89487adce m68knommu: add missing ioport_map() and ioport_unmap()
Add the missing ioport_map() and ioport_unmap() functions for the
non-MMU platforms.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-09-29 09:18:36 +10:00
Fabian Frederick
1089c552fb m68k/coldfire: remove second asm/mcfclk.h inclusion in m54xx.c
asm/mcfclk.h was included twice.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-09-29 09:18:36 +10:00
Greg Ungerer
ecb6bdcde2 m68knommu: fix size of address field for 5272 interrupt controller
Picked up by the 0-day buidler:

All warnings:
>> arch/m68k/coldfire/intc-5272.c:46:20: warning: large integer implicitly truncated to unsigned type [-Woverflow]
     /*MCF_IRQ_EINT1*/ { .icr = MCFSIM_ICR1, .index = 28, .ack = 1, },
...

The problem stems from the changes to make all ColdFire register addresses
absolute, in commit d72a5abb ("make remaining ColdFire 5272 register
definitions absolute"). That change did not take into account that the
addresses were stored as offsets in the irqmap of the intc-5272.c code.
Make the field that now stores register addresses big enough to hold
addresses.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-09-29 09:18:36 +10:00
Greg Ungerer
6f4a8856e0 m68k: fix crufty 68000 and 68360 intro comments
Quite a few of the non-mmu specific support files have a pathname in the
title comments of the file. These files have moved around a bit over the
years, and most are no longer accurate. Remove the pathname and fix the
comments to include at least a short description of the files contents.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-09-29 09:18:35 +10:00
Greg Ungerer
d3a887ccba m68k: remove the unused arch/m68k/platform directory
The non-mmu platform/machine directories have been move up one level.
We no longer need arch/m68k/platform, or its Makefile, so remove them.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-09-29 09:18:35 +10:00
Greg Ungerer
3ba885f524 m68k: move non-mmu 68360 platform code
The non-mmu 68360 specific code is inconsistently placed under a directory
named "platform". Move it to arch/m68k/ along with the other platform and
board directories.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-09-29 09:18:35 +10:00
Greg Ungerer
18cb3faf6f m68k: move non-mmu 68000 platform code
The non-mmu 68000 specific code is inconsistently placed under a directory
named "platform". Move it to arch/m68k/ along with the other platform and
machine directories.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-09-29 09:18:35 +10:00
Greg Ungerer
ece9ae6515 m68k: fix crufty ColdFire intro comments
Quite a few of the ColdFire specific support files have a pathname in the
title comments of the file. These files have moved around a bit over the
years, and most are no longer accurate. Remove the pathname and fix the
comments to include at least a short description of the files contents.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-09-29 09:18:34 +10:00
Greg Ungerer
f86b9e0383 m68k: move coldfire platform code
Move the m68k ColdFire platform support code directory to be with the
existing m68k platforms. Although the ColdFire is not a platform as such,
we have always kept all its support together. No reason to change that
as this time.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-09-29 09:18:34 +10:00
Geert Uytterhoeven
fd4d453b64 m68k: AMIGA_BUILTIN_SERIAL should depend on TTY
If CONFIG_TTY=n:

drivers/built-in.o: In function `rs_flush_buffer':
amiserial.c:(.text+0x1f626): undefined reference to `tty_wakeup'
drivers/built-in.o: In function `transmit_chars':
amiserial.c:(.text+0x1f6c8): undefined reference to `tty_wakeup'
drivers/built-in.o: In function `change_speed':
amiserial.c:(.text+0x1f80a): undefined reference to `tty_termios_baud_rate'
amiserial.c:(.text+0x1f88c): undefined reference to `tty_termios_baud_rate'
drivers/built-in.o: In function `check_modem_status':
amiserial.c:(.text+0x1faa6): undefined reference to `tty_hangup'
amiserial.c:(.text+0x1faec): undefined reference to `tty_wakeup'
drivers/built-in.o: In function `get_serial_info':
amiserial.c:(.text+0x1fb88): undefined reference to `tty_lock'
amiserial.c:(.text+0x1fbc0): undefined reference to `tty_unlock'
drivers/built-in.o: In function `rs_open':
amiserial.c:(.text+0x1fdc6): undefined reference to `tty_port_block_til_ready'
drivers/built-in.o: In function `set_serial_info':
amiserial.c:(.text+0x1fe0c): undefined reference to `tty_lock'
amiserial.c:(.text+0x1fea0): undefined reference to `tty_unlock'
amiserial.c:(.text+0x1fed0): undefined reference to `tty_unlock'
amiserial.c:(.text+0x1ffaa): undefined reference to `tty_unlock'
drivers/built-in.o: In function `receive_chars':
amiserial.c:(.text+0x2005c): undefined reference to `do_SAK'
amiserial.c:(.text+0x200e0): undefined reference to `tty_insert_flip_string_flags'
amiserial.c:(.text+0x2013c): undefined reference to `tty_insert_flip_string_flags'
amiserial.c:(.text+0x20148): undefined reference to `tty_flip_buffer_push'
drivers/built-in.o: In function `rs_close':
amiserial.c:(.text+0x20744): undefined reference to `tty_port_close_start'
amiserial.c:(.text+0x2078a): undefined reference to `tty_ldisc_flush'
amiserial.c:(.text+0x20798): undefined reference to `tty_port_close_end'
drivers/built-in.o: In function `amiga_serial_probe':
amiserial.c:(.init.text+0x96a): undefined reference to `__tty_alloc_driver'
amiserial.c:(.init.text+0x9c0): undefined reference to `tty_std_termios'
amiserial.c:(.init.text+0x9e6): undefined reference to `tty_set_operations'
amiserial.c:(.init.text+0xa3e): undefined reference to `tty_port_init'
amiserial.c:(.init.text+0xa5c): undefined reference to `tty_port_link_device'
amiserial.c:(.init.text+0xa6c): undefined reference to `tty_register_driver'
amiserial.c:(.init.text+0xb4a): undefined reference to `tty_unregister_driver'
amiserial.c:(.init.text+0xb58): undefined reference to `tty_port_destroy'
amiserial.c:(.init.text+0xb64): undefined reference to `put_tty_driver'

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-09-28 11:36:38 +02:00
Geert Uytterhoeven
a000dfc2ab m68k: Add missing ioport_unmap()
drivers/net/ethernet/cirrus/cs89x0.c: In function ‘cs89x0_ioport_probe’:
drivers/net/ethernet/cirrus/cs89x0.c:1629: error: implicit declaration of function ‘ioport_unmap’

Add the missing ioport_unmap() implementation, and convert ioport_map()
from a macro to a static inline function while we're at it (both copied
from asm-generic).

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-09-28 11:36:33 +02:00
Geert Uytterhoeven
9aa59cacdf m68k/atari - stram: Add missing #include <linux/ioport.h>
If CONFIG_BLOCK=n:

arch/m68k/atari/stram.c:44: error: variable ‘stram_pool’ has initializer but incomplete type
arch/m68k/atari/stram.c:45: error: unknown field ‘name’ specified in initializer
arch/m68k/atari/stram.c:46: warning: excess elements in struct initializer
arch/m68k/atari/stram.c:46: warning: (near initialization for ‘stram_pool’)
arch/m68k/atari/stram.c: In function ‘atari_stram_reserve_pages’:
arch/m68k/atari/stram.c:97: error: invalid use of undefined type ‘struct resource’
...

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-09-14 11:51:35 +02:00
Peter Zijlstra
c5c38ef3d7 irq_work: Introduce arch_irq_work_has_interrupt()
The nohz full code needs irq work to trigger its own interrupt so that
the subsystem can work even when the tick is stopped.

Lets introduce arch_irq_work_has_interrupt() that archs can override to
tell about their support for this ability.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2014-09-13 18:38:07 +02:00
Masanari Iida
1a84db567a treewide: fix errors in printk
This patch fix spelling typo in printk.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-01 11:18:25 +02:00
Geert Uytterhoeven
4ed7800987 m68k: Wire up memfd_create
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-09-01 10:28:00 +02:00
Geert Uytterhoeven
16d7b8b992 m68k: Wire up getrandom
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-09-01 10:28:00 +02:00
Vivek Goyal
b41d34b46a kexec: remove CONFIG_KEXEC dependency on crypto
New system call depends on crypto.  As it did not have a separate config
option, CONFIG_KEXEC was modified to select CRYPTO and CRYPTO_SHA256.

But now previous patch introduced a new config option for new syscall.
So CONFIG_KEXEC does not require crypto.  Remove that dependency.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-29 16:28:16 -07:00
Peter Zijlstra
d839bae426 locking,arch,m68k: Fold atomic_ops
Many of the atomic op implementations are the same except for one
instruction; fold the lot into a few CPP macros and reduce LoC.

This also prepares for easy addition of new ops.

Requires asm_op due to eor.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: linux-m68k@lists.linux-m68k.org
Link: http://lkml.kernel.org/r/20140509091646.GO30445@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-08-14 12:48:08 +02:00
Linus Torvalds
63b12bdb0d Merge branch 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc
Pull arch signal handling cleanup from Richard Weinberger:
 "This patch series moves all remaining archs to the get_signal(),
  signal_setup_done() and sigsp() functions.

  Currently these archs use open coded variants of the said functions.
  Further, unused parameters get removed from get_signal_to_deliver(),
  tracehook_signal_handler() and signal_delivered().

  At the end of the day we save around 500 lines of code."

* 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc: (43 commits)
  powerpc: Use sigsp()
  openrisc: Use sigsp()
  mn10300: Use sigsp()
  mips: Use sigsp()
  microblaze: Use sigsp()
  metag: Use sigsp()
  m68k: Use sigsp()
  m32r: Use sigsp()
  hexagon: Use sigsp()
  frv: Use sigsp()
  cris: Use sigsp()
  c6x: Use sigsp()
  blackfin: Use sigsp()
  avr32: Use sigsp()
  arm64: Use sigsp()
  arc: Use sigsp()
  sas_ss_flags: Remove nested ternary if
  Rip out get_signal_to_deliver()
  Clean up signal_delivered()
  tracehook_signal_handler: Remove sig, info, ka and regs
  ...
2014-08-09 09:58:12 -07:00
Vivek Goyal
12db5562e0 kexec: load and relocate purgatory at kernel load time
Load purgatory code in RAM and relocate it based on the location.
Relocation code has been inspired by module relocation code and purgatory
relocation code in kexec-tools.

Also compute the checksums of loaded kexec segments and store them in
purgatory.

Arch independent code provides this functionality so that arch dependent
bootloaders can make use of it.

Helper functions are provided to get/set symbol values in purgatory which
are used by bootloaders later to set things like stack and entry point of
second kernel etc.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Greg Kroah-Hartman <greg@kroah.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: WANG Chao <chaowang@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-08 15:57:32 -07:00
Linus Torvalds
6b22df74f7 SCSI misc on 20140806
This patch set consists of the usual driver updates (ufs, storvsc, pm8001
 hpsa).  It also has removal of the user space target driver code (everyone is
 using LIO now), a partial PCI MSI-X update, more multi-queue updates,
 conversion to 64 bit LUNs (so we could theoretically cope with any LUN
 returned by a device) and placeholder support for the ZBC device type (Shingle
 drives), plus an assortment of minor updates and bug fixes.
 
 Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This patch set consists of the usual driver updates (ufs, storvsc,
  pm8001 hpsa).  It also has removal of the user space target driver
  code (everyone is using LIO now), a partial PCI MSI-X update, more
  multi-queue updates, conversion to 64 bit LUNs (so we could
  theoretically cope with any LUN returned by a device) and placeholder
  support for the ZBC device type (Shingle drives), plus an assortment
  of minor updates and bug fixes"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (143 commits)
  scsi: do not issue SCSI RSOC command to Promise Vtrak E610f
  vmw_pvscsi: Use pci_enable_msix_exact() instead of pci_enable_msix()
  pm8001: Fix invalid return when request_irq() failed
  lpfc: Remove superfluous call to pci_disable_msix()
  isci: Use pci_enable_msix_exact() instead of pci_enable_msix()
  bfa: Use pci_enable_msix_exact() instead of pci_enable_msix()
  bfa: Cleanup bfad_setup_intr() function
  bfa: Do not call pci_enable_msix() after it failed once
  fnic: Use pci_enable_msix_exact() instead of pci_enable_msix()
  scsi: use short driver name for per-driver cmd slab caches
  scsi_debug: support scsi-mq, queues and locks
  Drivers: add blist flags
  scsi: ufs: fix endianness sparse warnings
  scsi: ufs: make undeclared functions static
  bnx2i: Update driver version to 2.7.10.1
  pm8001: fix a memory leak in nvmd_resp
  pm8001: fix update_flash
  pm8001: fix a memory leak in flash_update
  pm8001: Cleaning up uninitialized variables
  pm8001: Fix to remove null pointer checks that could never happen
  ...
2014-08-06 20:10:32 -07:00
Richard Weinberger
36992f2893 m68k: Use sigsp()
Use sigsp() instead of the open coded variant.

Signed-off-by: Richard Weinberger <richard@nod.at>
2014-08-06 13:04:09 +02:00
Richard Weinberger
0d97500d39 m68k: Use get_signal() signal_setup_done()
Use the more generic functions get_signal() signal_setup_done()
for signal delivery.

Signed-off-by: Richard Weinberger <richard@nod.at>
2014-08-06 13:02:15 +02:00
Linus Torvalds
f67d251a87 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu fixes from Greg Ungerer:
 "Just a couple of small fixes.  Fix definition of page_to_phys() and
  remove unecesary prototype of kobjsize()"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68knommu: Remove unnecessary prototype for kobjsize()
  m68knommu: Correct page_to_phys when PAGE_OFFSET is non-zero.
2014-08-05 09:58:37 -07:00
Linus Torvalds
8efb90cf1e Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
 "The main changes in this cycle are:

   - big rtmutex and futex cleanup and robustification from Thomas
     Gleixner
   - mutex optimizations and refinements from Jason Low
   - arch_mutex_cpu_relax() removal and related cleanups
   - smaller lockdep tweaks"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  arch, locking: Ciao arch_mutex_cpu_relax()
  locking/lockdep: Only ask for /proc/lock_stat output when available
  locking/mutexes: Optimize mutex trylock slowpath
  locking/mutexes: Try to acquire mutex only if it is unlocked
  locking/mutexes: Delete the MUTEX_SHOW_NO_WAITER macro
  locking/mutexes: Correct documentation on mutex optimistic spinning
  rtmutex: Make the rtmutex tester depend on BROKEN
  futex: Simplify futex_lock_pi_atomic() and make it more robust
  futex: Split out the first waiter attachment from lookup_pi_state()
  futex: Split out the waiter check from lookup_pi_state()
  futex: Use futex_top_waiter() in lookup_pi_state()
  futex: Make unlock_pi more robust
  rtmutex: Avoid pointless requeueing in the deadlock detection chain walk
  rtmutex: Cleanup deadlock detector debug logic
  rtmutex: Confine deadlock logic to futex
  rtmutex: Simplify remove_waiter()
  rtmutex: Document pi chain walk
  rtmutex: Clarify the boost/deboost part
  rtmutex: No need to keep task ref for lock owner check
  rtmutex: Simplify and document try_to_take_rtmutex()
  ...
2014-08-04 16:09:06 -07:00
Nicholas Krause
9117710a59 m68k/sun3: Remove define statement no longer needed
In the file sun3_pgalloc.h we should remove #define_KERNPG_TABLE equals 0
as this define statement hasn't been used since kernel verison 2.5.18 and
is now no longer needed.

Signed-off-by: Nicholas Krause <xerofoify@gmail.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-07-26 17:48:34 +02:00
Bart Van Assche
aa3fc09078 tgt: defconfig cleanup
Because of the removal of the scsi_tgt kernel module, the kbuild variables
CONFIG_SCSI_TGT, CONFIG_SCSI_SRP_TGT_ATTRS and CONFIG_SCSI_FC_TGT_ATTRS
are obsolete. This patch removes these variables. This patch is the result
of the following command:

find -name '*defconfig' | while read f; do grep -vwE 'CONFIG_SCSI_TGT|CONFIG_SCSI_SRP_TGT_ATTRS|CONFIG_SCSI_FC_TGT_ATTRS|CONFIG_SRP' $f >/tmp/t && mv /tmp/t $f; done

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
2014-07-17 22:07:44 +02:00
Davidlohr Bueso
3a6bfbc91d arch, locking: Ciao arch_mutex_cpu_relax()
The arch_mutex_cpu_relax() function, introduced by 34b133f, is
hacky and ugly. It was added a few years ago to address the fact
that common cpu_relax() calls include yielding on s390, and thus
impact the optimistic spinning functionality of mutexes. Nowadays
we use this function well beyond mutexes: rwsem, qrwlock, mcs and
lockref. Since the macro that defines the call is in the mutex header,
any users must include mutex.h and the naming is misleading as well.

This patch (i) renames the call to cpu_relax_lowlatency  ("relax, but
only if you can do it with very low latency") and (ii) defines it in
each arch's asm/processor.h local header, just like for regular cpu_relax
functions. On all archs, except s390, cpu_relax_lowlatency is simply cpu_relax,
and thus we can take it out of mutex.h. While this can seem redundant,
I believe it is a good choice as it allows us to move out arch specific
logic from generic locking primitives and enables future(?) archs to
transparently define it, similarly to System Z.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Bharat Bhushan <r65777@freescale.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chen Liqin <liqin.linux@gmail.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: David Howells <dhowells@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Cc: Dominik Dingel <dingel@linux.vnet.ibm.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: James E.J. Bottomley <jejb@parisc-linux.org>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Joe Perches <joe@perches.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Joseph Myers <joseph@codesourcery.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Neuling <mikey@neuling.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Nicolas Pitre <nico@linaro.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Qiaowei Ren <qiaowei.ren@intel.com>
Cc: Rafael Wysocki <rafael.j.wysocki@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: Stratos Karafotis <stratosk@semaphore.gr>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vasily Kulikov <segoon@openwall.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Cc: Waiman Long <Waiman.Long@hp.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: adi-buildroot-devel@lists.sourceforge.net
Cc: linux390@de.ibm.com
Cc: linux-alpha@vger.kernel.org
Cc: linux-am33-list@redhat.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-c6x-dev@linux-c6x.org
Cc: linux-cris-kernel@axis.com
Cc: linux-hexagon@vger.kernel.org
Cc: linux-ia64@vger.kernel.org
Cc: linux@lists.openrisc.net
Cc: linux-m32r-ja@ml.linux-m32r.org
Cc: linux-m32r@ml.linux-m32r.org
Cc: linux-m68k@lists.linux-m68k.org
Cc: linux-metag@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-parisc@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Cc: linux-xtensa@linux-xtensa.org
Cc: sparclinux@vger.kernel.org
Link: http://lkml.kernel.org/r/1404079773.2619.4.camel@buesod1.americas.hpqcorp.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-07-17 12:32:47 +02:00
Geert Uytterhoeven
5bc8c7cdeb m68k: Export mach_random_get_entropy to modules
When a module calls random_get_entropy():

    ERROR: "mach_random_get_entropy" [crypto/drbg.ko] undefined!
    make[1]: *** [__modpost] Error 1

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-07-11 10:37:53 +02:00
Geert Uytterhoeven
f1a1b63529 m68k: Fix boot regression on machines with RAM at non-zero
My enhancement to store the initial mapping size for later reuse in commit
486df8bc46 ("m68k: Increase initial mapping
to 8 or 16 MiB if possible") broke booting on machines where RAM doesn't
start at address zero.

Use pc-relative addressing to fix this.

Reported-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Andreas Schwab <schwab@linux-m68k.org>
2014-07-10 09:58:26 +02:00
Tobias Klauser
9a1a1aea75 m68knommu: Remove unnecessary prototype for kobjsize()
The prototype for kobjsize() is already defined in linux/mm.h which is
included where kobjsize() is used.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-06-20 23:12:10 +10:00
Steven King
817f72d680 m68knommu: Correct page_to_phys when PAGE_OFFSET is non-zero.
The definition of page_to_phys for nommu produces an incorrect value when
PAGE_OFFSET is non-zero.  The nommu version of page_to_pfn works correctly
for non-zero PAGE_OFFSET, so use that instead.

Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-06-20 15:11:20 +10:00
Oleg Nesterov
36fac0a214 signals: kill sigfindinword()
It has no users and it doesn't look useful.  I do not know why/when it was
introduced, I can't even find any user in the git history.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 16:08:11 -07:00
Fabian Frederick
f6187769da sys_sgetmask/sys_ssetmask: add CONFIG_SGETMASK_SYSCALL
sys_sgetmask and sys_ssetmask are obsolete system calls no longer
supported in libc.

This patch replaces architecture related __ARCH_WANT_SYS_SGETMAX by expert
mode configuration.That option is enabled by default for those
architectures.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-04 16:54:14 -07:00
Linus Torvalds
776edb5931 Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next
Pull core locking updates from Ingo Molnar:
 "The main changes in this cycle were:

   - reduced/streamlined smp_mb__*() interface that allows more usecases
     and makes the existing ones less buggy, especially in rarer
     architectures

   - add rwsem implementation comments

   - bump up lockdep limits"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
  rwsem: Add comments to explain the meaning of the rwsem's count field
  lockdep: Increase static allocations
  arch: Mass conversion of smp_mb__*()
  arch,doc: Convert smp_mb__*()
  arch,xtensa: Convert smp_mb__*()
  arch,x86: Convert smp_mb__*()
  arch,tile: Convert smp_mb__*()
  arch,sparc: Convert smp_mb__*()
  arch,sh: Convert smp_mb__*()
  arch,score: Convert smp_mb__*()
  arch,s390: Convert smp_mb__*()
  arch,powerpc: Convert smp_mb__*()
  arch,parisc: Convert smp_mb__*()
  arch,openrisc: Convert smp_mb__*()
  arch,mn10300: Convert smp_mb__*()
  arch,mips: Convert smp_mb__*()
  arch,metag: Convert smp_mb__*()
  arch,m68k: Convert smp_mb__*()
  arch,m32r: Convert smp_mb__*()
  arch,ia64: Convert smp_mb__*()
  ...
2014-06-03 12:57:53 -07:00
Linus Torvalds
b55a0ff8df Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu into next
Pull m68knommu updates from Greg Ungerer:
 "Nothing too big, just a handfull of small changes.

  A couple of dragonball fixes, coldfire qspi cleanup and fixes, and
  some coldfire gpio cleanup, fixes and extensions"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68knommu: Implement gpio support for m54xx.
  m68knommu: Make everything thats not exported, static.
  m68knommu: setting the gpio data direction register to output doesn't dependent upon the value to output!
  m68knommu: add to_irq function so we can map gpios to external interrupts.
  m68knommu: qspi declutter.
  m68knommu: Fix the 5249/525x qspi base address.
  m68knommu: Add qspi clk for Coldfire SoCs without real clks.
  m68k: fix a compiler warning when building for DragonBall
  m68knommu: Fix mach_sched_init for EZ and VZ DragonBall chips
2014-06-02 20:00:54 -07:00
Fabian Frederick
e8d6dc5ad2 m68k/hp300: Convert printk to pr_foo()
This patch also fixes some checkpatch warnings

This is untested

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-05-28 10:11:55 +02:00
Fabian Frederick
ce00aa0a72 m68k/apollo: Convert printk to pr_foo()
no level printk converted to pr_info

This is untested

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-05-28 10:11:55 +02:00
Fabian Frederick
f296401b04 m68k/amiga: Convert printk(foo to pr_foo()
-no level printk converted to pr_warn/pr_info
-fixed a small identation problem

This is untested

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-05-28 10:11:54 +02:00
Andreas Schwab
486df8bc46 m68k: Increase initial mapping to 8 or 16 MiB if possible
If the size of the first memory chunk is at least 8 or 16 MiB increase the
initial mapping to 8 resp. 16 MiB instead of 4 MiB.
This makes it possible to
  1. Map more memory in the first node without running out of space for the
     page tables,
  2. Boot kernels that don't fit in 4 MiB (e.g. multi_defconfig).

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>

  - Add support for 8 MiB,
  - Store initial mapping size in head.S for later reuse,
  - Add comment about large kernels.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-05-28 10:11:54 +02:00
Geert Uytterhoeven
44074e892c m68k: Update defconfigs for v3.15-rc2
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-05-28 10:11:53 +02:00
Finn Thain
83adc18110 m68k/atari: fix SCC initialization for debug console
Fix SCC initialization for Atari as was previously fixed for Mac. It's
probably not practical to share more code but some attempt is made to
align the Mac and Atari variants.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-05-28 10:11:53 +02:00
Finn Thain
c46f46d02c m68k/mvme16x: Adopt common boot console
In a multi-platform kernel binary we only need one early console instance.

The difficulty here is that the common early console is started by
early_param(), whereas the MVME16x instance is started later by
config_mvme16x(). That means some interrupt setup must be done earlier.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Tested-by: Stephen N Chivers <schivers@csc.com.au>
[Geert] Tag debug_cons_write() with __ref to kill section mismatch warning
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-05-28 10:11:53 +02:00
Finn Thain
7913ad1ad8 m68k: Multi-platform EARLY_PRINTK
Make the boot console available to more m68k platforms by leveraging
the head.S debug console.

The boot console is enabled by the "earlyprintk" command line argument
which is how most other architectures do this.

This is a change of behaviour for the Mac but does not negatively impact
the common use-case which is not debugging.

This is also a change of behaviour for other platforms because it means
the serial port stays quiet when CONFIG_EARLY_PRINTK is not enabled. This
is also an improvement for the common use-case.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Tested-by: Stephen N Chivers <schivers@csc.com.au>
[Geert: CONSOLE_DEBUG should depend on CONFIG_FONT_SUPPORT]
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-05-28 10:10:04 +02:00
Finn Thain
97f3f68c21 m68k: Toward platform agnostic framebuffer debug logging
Code subject to #ifdef CONSOLE is made more generic, as was apparently
intended by the original author.

Remove console_put_stats() routine. If it should be somehow useful, it
should also be useful on platforms without framebuffer debug logging. The
present implementation is only built #if defined CONFIG_MAC && defined
CONSOLE even though puts() works everywhere.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Tested-by: Stephen N Chivers <schivers@csc.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-05-26 22:41:25 +02:00
Michael Schmitz
fded332bf4 m68k/atari - stram: alloc ST-RAM pool even if kernel not in ST-RAM
With the kernel loaded to FastRAM (TT-RAM), none of the ST-RAM
address range is mapped by init_mem, and ST-RAM is not accessible
through the normal allocation pathways as a result.

Implement ST-RAM pool allocation to be based on physical addresses
always (it already was when the kernel was loaded in ST-RAM).
Return kernel virtual addresses as per normal.

The current test for the kernel residing in ST-RAM always returns
true. Use the bootinfo memory chunk order instead - with the kernel
in FastRAM, ST-RAM (phys. 0x0) is not the first chunk.

In case the kernel is running from FastRAM, delay mapping of ST-RAM
pool until after mem_init.

Provide helper functions for those users of ST-RAM that need
to be aware of the backing physical addresses.

Kudos to Geert for his hints on getting this started.

Signed-off-by: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-05-26 22:41:24 +02:00
Steven King
83c6bdb827 m68knommu: Implement gpio support for m54xx.
Singed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-05-26 13:28:38 +10:00
Steven King
ec9f848354 m68knommu: Make everything thats not exported, static.
Singed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-05-26 13:28:38 +10:00
Steven King
ffca5af954 m68knommu: setting the gpio data direction register to output doesn't dependent upon the value to output!
Singed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-05-26 13:28:38 +10:00
Steven King
60fc65fdd1 m68knommu: add to_irq function so we can map gpios to external interrupts.
Singed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-05-26 13:28:37 +10:00
Steven King
151d14f4ac m68knommu: qspi declutter.
Move the check for the QSPI config option inside the function body.  If the
option is not enabled, the compiler will optimize away the empty function
body so we can remove the other check for the config option.

Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-05-26 13:28:37 +10:00
Steven King
e93e91f225 m68knommu: Fix the 5249/525x qspi base address.
Use the correct base address for the QSPI module on the 5249/525x.

Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-05-26 13:28:37 +10:00
Steven King
7485952378 m68knommu: Add qspi clk for Coldfire SoCs without real clks.
Since we now have fake clks on devices without real clocks, we need clks
defined for qspi for the qspi driver to work on those devices.

Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-05-26 13:28:37 +10:00
Daniel Palmer
5198f847f7 m68k: fix a compiler warning when building for DragonBall
In file included from arch/m68k/kernel/setup.c:4:0:
arch/m68k/kernel/setup_no.c:70:0: warning: "CPU_NAME" redefined [enabled by default]
 #define CPU_NAME "MC68VZ328"
 ^
arch/m68k/kernel/setup_no.c:61:0: note: this is the location of the previous definition
 #define CPU_NAME "MC68000"
 ^

Signed-off-by: Daniel Palmer <danieruru@gmail.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-05-26 13:28:36 +10:00
Daniel Palmer
0b1755160c m68knommu: Fix mach_sched_init for EZ and VZ DragonBall chips
Signed-off-by: Daniel Palmer <danieruru@gmail.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-05-26 13:28:36 +10:00
Miklos Szeredi
cc79f00f76 m68k: add renameat2 syscall
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-05-20 10:59:37 +02:00
Peter Zijlstra
2db56e8606 arch,m68k: Convert smp_mb__*()
m68k uses asm-generic/barrier.h and its smp_mb() is barrier(),
therefore we can use the generic versions that use smp_mb().

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/n/tip-s5dvosrb7qhvpmtaffwfn0zg@git.kernel.org
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-m68k@lists.linux-m68k.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-04-18 14:20:37 +02:00
Uwe Kleine-König
ce816fa88c Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP
If the renamed symbol is defined lib/iomap.c implements ioport_map and
ioport_unmap and currently (nearly) all platforms define the port
accessor functions outb/inb and friend unconditionally.  So
HAS_IOPORT_MAP is the better name for this.

Consequently NO_IOPORT is renamed to NO_IOPORT_MAP.

The motivation for this change is to reintroduce a symbol HAS_IOPORT
that signals if outb/int et al are available.  I will address that at
least one merge window later though to keep surprises to a minimum and
catch new introductions of (HAS|NO)_IOPORT.

The changes in this commit were done using:

	$ git grep -l -E '(NO|HAS)_IOPORT' | xargs perl -p -i -e 's/\b((?:CONFIG_)?(?:NO|HAS)_IOPORT)\b/$1_MAP/'

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-07 16:36:11 -07:00
Linus Torvalds
472e374161 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68k fixes from Greg Ungerer:
 "Just a couple of fixes.  Clean up compile warnings by using correct
  types in function args, and clean out the removed CONFIG_MTD_PARTITIONS"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68knommu: fix arg types for outs* functions
  m68k : Kill CONFIG_MTD_PARTITIONS
2014-04-05 13:18:52 -07:00
Linus Torvalds
683b6c6f82 Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq code updates from Thomas Gleixner:
 "The irq department proudly presents:

   - Another tree wide sweep of irq infrastructure abuse.  Clear winner
     of the trainwreck engineering contest was:
         #include "../../../kernel/irq/settings.h"

   - Tree wide update of irq_set_affinity() callbacks which miss a cpu
     online check when picking a single cpu out of the affinity mask.

   - Tree wide consolidation of interrupt statistics.

   - Updates to the threaded interrupt infrastructure to allow explicit
     wakeup of the interrupt thread and a variant of synchronize_irq()
     which synchronizes only the hard interrupt handler.  Both are
     needed to replace the homebrewn thread handling in the mmc/sdhci
     code.

   - New irq chip callbacks to allow proper support for GPIO based irqs.
     The GPIO based interrupts need to request/release GPIO resources
     from request/free_irq.

   - A few new ARM interrupt chips.  No revolutionary new hardware, just
     differently wreckaged variations of the scheme.

   - Small improvments, cleanups and updates all over the place"

I was hoping that that trainwreck engineering contest was a April Fools'
joke.  But no.

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (68 commits)
  irqchip: sun7i/sun6i: Disable NMI before registering the handler
  ARM: sun7i/sun6i: dts: Fix IRQ number for sun6i NMI controller
  ARM: sun7i/sun6i: irqchip: Update the documentation
  ARM: sun7i/sun6i: dts: Add NMI irqchip support
  ARM: sun7i/sun6i: irqchip: Add irqchip driver for NMI controller
  genirq: Export symbol no_action()
  arm: omap: Fix typo in ams-delta-fiq.c
  m68k: atari: Fix the last kernel_stat.h fallout
  irqchip: sun4i: Simplify sun4i_irq_ack
  irqchip: sun4i: Use handle_fasteoi_irq for all interrupts
  genirq: procfs: Make smp_affinity values go+r
  softirq: Add linux/irq.h to make it compile again
  m68k: amiga: Add linux/irq.h to make it compile again
  irqchip: sun4i: Don't ack IRQs > 0, fix acking of IRQ 0
  irqchip: sun4i: Fix a comment about mask register initialization
  irqchip: sun4i: Fix irq 0 not working
  genirq: Add a new IRQCHIP_EOI_THREADED flag
  genirq: Document IRQCHIP_ONESHOT_SAFE flag
  ARM: sunxi: dt: Convert to the new irq controller compatibles
  irqchip: sunxi: Change compatibles
  ...
2014-04-01 11:22:57 -07:00
Linus Torvalds
f24279172d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Update defconfigs for v3.14-rc1
  [SCSI] atari_scsi: Fix sleep_on race
  m68k: head.S - Remove bogus L prefix in comment
  m68k: Remove dead code
  m68k: Remove CONSOLE_PENGUIN macro, adopt CONFIG_LOGO
2014-03-31 15:00:32 -07:00
Linus Torvalds
462bf234a8 Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core locking updates from Ingo Molnar:
 "The biggest change is the MCS spinlock generalization changes from Tim
  Chen, Peter Zijlstra, Jason Low et al.  There's also lockdep
  fixes/enhancements from Oleg Nesterov, in particular a false negative
  fix related to lockdep_set_novalidate_class() usage"

* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
  locking/mutex: Fix debug checks
  locking/mutexes: Add extra reschedule point
  locking/mutexes: Introduce cancelable MCS lock for adaptive spinning
  locking/mutexes: Unlock the mutex without the wait_lock
  locking/mutexes: Modify the way optimistic spinners are queued
  locking/mutexes: Return false if task need_resched() in mutex_can_spin_on_owner()
  locking: Move mcs_spinlock.h into kernel/locking/
  m68k: Skip futex_atomic_cmpxchg_inatomic() test
  futex: Allow architectures to skip futex_atomic_cmpxchg_inatomic() test
  Revert "sched/wait: Suppress Sparse 'variable shadowing' warning"
  lockdep: Change lockdep_set_novalidate_class() to use _and_name
  lockdep: Change mark_held_locks() to check hlock->check instead of lockdep_no_validate
  lockdep: Don't create the wrong dependency on hlock->check == 0
  lockdep: Make held_lock->check and "int check" argument bool
  locking/mcs: Allow architecture specific asm files to be used for contended case
  locking/mcs: Order the header files in Kbuild of each architecture in alphabetical order
  sched/wait: Suppress Sparse 'variable shadowing' warning
  hung_task/Documentation: Fix hung_task_warnings description
  locking/mcs: Allow architectures to hook in to contended paths
  locking/mcs: Micro-optimize the MCS code, add extra comments
  ...
2014-03-31 10:59:39 -07:00
Geert Uytterhoeven
50be9eba83 m68k: Update defconfigs for v3.14-rc1
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-03-31 15:07:24 +02:00
Thomas Gleixner
b718102e7d m68k: atari: Fix the last kernel_stat.h fallout
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-03-20 12:40:30 +01:00
Thomas Gleixner
14b4319a44 m68k: amiga: Add linux/irq.h to make it compile again
The removal of linux/irq.h from kernel_stat.h causes 

 arch/m68k/amiga/cia.c:171: error: 'handle_simple_irq' undeclared

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-03-19 11:28:14 +01:00
Thomas Gleixner
ffb12cf002 Merge branch 'irq/for-gpio' into irq/core
Merge the request/release callbacks which are in a separate branch for
consumption by the gpio folks.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-03-12 16:01:07 +01:00
Greg Ungerer
4dc5aa2172 m68knommu: fix arg types for outs* functions
Compiling for any m68knommu targets will give the following warnings:

  CC      lib/iomap_copy.o
lib/iomap.c: In function ‘iowrite8_rep’:
lib/iomap.c:213:2: warning: passing argument 2 of ‘io_outsb’ discards qualifiers from pointer target type
arch/m68k/include/asm/io_no.h:58:20: note: expected ‘void *’ but argument is of type ‘const void *’
lib/iomap.c: In function ‘iowrite16_rep’:
lib/iomap.c:217:2: warning: passing argument 2 of ‘io_outsw’ discards qualifiers from pointer target type
arch/m68k/include/asm/io_no.h:66:20: note: expected ‘void *’ but argument is of type ‘const void *’
lib/iomap.c: In function ‘iowrite32_rep’:
lib/iomap.c:221:2: warning: passing argument 2 of ‘io_outsl’ discards qualifiers from pointer target type
arch/m68k/include/asm/io_no.h:74:20: note: expected ‘void *’ but argument is of type ‘const void *’

Fix it by puting in the appropriate const qualifier on the buf argument of
the m68knommu outs* inline functions.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-03-11 09:38:22 +10:00
Eunbong Song
b6a8ebb598 m68k : Kill CONFIG_MTD_PARTITIONS
This patch removes CONFIG_MTD_PARTITIONS in config files for m68k.
Because CONFIG_MTD_PARTITIONS was removed by commit 6a8a98b22b.

Signed-off-by: Eunbong Song <eunb.song@samsung.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2014-03-11 09:38:21 +10:00
Geert Uytterhoeven
ecc79d4964 m68k: head.S - Remove bogus L prefix in comment
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-03-10 21:15:08 +01:00
Finn Thain
7ce0526a6c m68k: Remove dead code
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-03-10 21:15:07 +01:00
Finn Thain
a91c406c74 m68k: Remove CONSOLE_PENGUIN macro, adopt CONFIG_LOGO
Allow CONFIG_LOGO to enable/disable the head.S penguin logo as well as the
framebuffer console logo. This should save a few bytes. It also gets rid
of the obscure CONSOLE_PENGUIN macro.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-03-10 21:15:06 +01:00
Finn Thain
e571c58f31 m68k: Skip futex_atomic_cmpxchg_inatomic() test
Skip the futex_atomic_cmpxchg_inatomic() test in futex_init(). It causes a 
fatal exception on 68030 (and presumably 68020 also).

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: http://lkml.kernel.org/r/alpine.LNX.2.00.1403061006440.5525@nippy.intranet
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-03-06 11:35:17 +01:00
Thomas Gleixner
abcfc543be m68k: Do not rely on magic indirect includes
commit: 8f945a33 (genirq: Move kstat_incr_irqs_this_cpu() to core)
unearthed the following:

arch/m68k/kernel/ints.c:34:15: error: variable 'auto_irq_chip' has initializer but incomplete type
arch/m68k/kernel/ints.c:35:2: error: unknown field 'name' specified in initializer
arch/m68k/kernel/ints.c:35:2: warning: excess elements in struct initializer [enabled by default]

The reason is that this file requires linux/irq.h and magically
pulled that in via linux/kernel_stat.h

The commit above got rid of the pointless include of linux/irq.h in
linux/kernel_stat.h and therefor broke the build.

Include linux/irq.h

Reported-by: fengguang.wu@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-03-05 13:28:32 +01:00
Geert Uytterhoeven
7247f55381 m68k: Wire up sched_setattr and sched_getattr
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
2014-02-10 20:10:20 +01:00
Geert Uytterhoeven
3067bab1cb m68k: Switch to asm-generic/barrier.h
The generic nop() implementation is fine for m68k.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
2014-02-10 20:10:19 +01:00
Geert Uytterhoeven
a18b31dd53 m68k: Sort arch/m68k/include/asm/Kbuild
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
2014-02-10 20:10:18 +01:00
Tim Chen
ddf1d169c0 locking/mcs: Allow architecture specific asm files to be used for contended case
This patch allows each architecture to add its specific assembly optimized
arch_mcs_spin_lock_contended and arch_mcs_spinlock_uncontended for
MCS lock and unlock functions.

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Scott J Norton <scott.norton@hp.com>
Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Cc: AswinChandramouleeswaran <aswin@hp.com>
Cc: George Spelvin <linux@horizon.com>
Cc: Rik vanRiel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: MichelLespinasse <walken@google.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Alex Shi <alex.shi@linaro.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Figo.zhang" <figo1802@gmail.com>
Cc: "Paul E.McKenney" <paulmck@linux.vnet.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Waiman Long <waiman.long@hp.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew R Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1390347382.3138.67.camel@schen9-DESK
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-02-09 21:18:52 +01:00
Tim Chen
b119fa61d4 locking/mcs: Order the header files in Kbuild of each architecture in alphabetical order
We perform a clean up of the Kbuid files in each architecture.
We order the files in each Kbuild in alphabetical order
by running the below script.

for i in arch/*/include/asm/Kbuild
do
        cat $i | gawk '/^generic-y/ {
                i = 3;
                do {
                        for (; i <= NF; i++) {
                                if ($i == "\\") {
                                        getline;
                                        i = 1;
                                        continue;
                                }
                                if ($i != "")
                                        hdr[$i] = $i;
                        }
                        break;
                } while (1);
                next;
        }
        // {
                print $0;
        }
        END {
                n = asort(hdr);
                for (i = 1; i <= n; i++)
                        print "generic-y += " hdr[i];
        }' > ${i}.sorted;
        mv ${i}.sorted $i;
done

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Matthew R Wilcox <matthew.r.wilcox@intel.com>
Cc: AswinChandramouleeswaran <aswin@hp.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: "Paul E.McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Scott J Norton <scott.norton@hp.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: "Figo.zhang" <figo1802@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Waiman Long <waiman.long@hp.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Alex Shi <alex.shi@linaro.org>
Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: George Spelvin <linux@horizon.com>
Cc: MichelLespinasse <walken@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
[ Fixed build bug. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-02-09 21:17:50 +01:00
Linus Torvalds
f568849eda Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block
Pull core block IO changes from Jens Axboe:
 "The major piece in here is the immutable bio_ve series from Kent, the
  rest is fairly minor.  It was supposed to go in last round, but
  various issues pushed it to this release instead.  The pull request
  contains:

   - Various smaller blk-mq fixes from different folks.  Nothing major
     here, just minor fixes and cleanups.

   - Fix for a memory leak in the error path in the block ioctl code
     from Christian Engelmayer.

   - Header export fix from CaiZhiyong.

   - Finally the immutable biovec changes from Kent Overstreet.  This
     enables some nice future work on making arbitrarily sized bios
     possible, and splitting more efficient.  Related fixes to immutable
     bio_vecs:

        - dm-cache immutable fixup from Mike Snitzer.
        - btrfs immutable fixup from Muthu Kumar.

  - bio-integrity fix from Nic Bellinger, which is also going to stable"

* 'for-3.14/core' of git://git.kernel.dk/linux-block: (44 commits)
  xtensa: fixup simdisk driver to work with immutable bio_vecs
  block/blk-mq-cpu.c: use hotcpu_notifier()
  blk-mq: for_each_* macro correctness
  block: Fix memory leak in rw_copy_check_uvector() handling
  bio-integrity: Fix bio_integrity_verify segment start bug
  block: remove unrelated header files and export symbol
  blk-mq: uses page->list incorrectly
  blk-mq: use __smp_call_function_single directly
  btrfs: fix missing increment of bi_remaining
  Revert "block: Warn and free bio if bi_end_io is not set"
  block: Warn and free bio if bi_end_io is not set
  blk-mq: fix initializing request's start time
  block: blk-mq: don't export blk_mq_free_queue()
  block: blk-mq: make blk_sync_queue support mq
  block: blk-mq: support draining mq queue
  dm cache: increment bi_remaining when bi_end_io is restored
  block: fixup for generic bio chaining
  block: Really silence spurious compiler warnings
  block: Silence spurious compiler warnings
  block: Kill bio_pair_split()
  ...
2014-01-30 11:19:05 -08:00
Linus Torvalds
4ba9920e5e Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:

 1) BPF debugger and asm tool by Daniel Borkmann.

 2) Speed up create/bind in AF_PACKET, also from Daniel Borkmann.

 3) Correct reciprocal_divide and update users, from Hannes Frederic
    Sowa and Daniel Borkmann.

 4) Currently we only have a "set" operation for the hw timestamp socket
    ioctl, add a "get" operation to match.  From Ben Hutchings.

 5) Add better trace events for debugging driver datapath problems, also
    from Ben Hutchings.

 6) Implement auto corking in TCP, from Eric Dumazet.  Basically, if we
    have a small send and a previous packet is already in the qdisc or
    device queue, defer until TX completion or we get more data.

 7) Allow userspace to manage ipv6 temporary addresses, from Jiri Pirko.

 8) Add a qdisc bypass option for AF_PACKET sockets, from Daniel
    Borkmann.

 9) Share IP header compression code between Bluetooth and IEEE802154
    layers, from Jukka Rissanen.

10) Fix ipv6 router reachability probing, from Jiri Benc.

11) Allow packets to be captured on macvtap devices, from Vlad Yasevich.

12) Support tunneling in GRO layer, from Jerry Chu.

13) Allow bonding to be configured fully using netlink, from Scott
    Feldman.

14) Allow AF_PACKET users to obtain the VLAN TPID, just like they can
    already get the TCI.  From Atzm Watanabe.

15) New "Heavy Hitter" qdisc, from Terry Lam.

16) Significantly improve the IPSEC support in pktgen, from Fan Du.

17) Allow ipv4 tunnels to cache routes, just like sockets.  From Tom
    Herbert.

18) Add Proportional Integral Enhanced packet scheduler, from Vijay
    Subramanian.

19) Allow openvswitch to mmap'd netlink, from Thomas Graf.

20) Key TCP metrics blobs also by source address, not just destination
    address.  From Christoph Paasch.

21) Support 10G in generic phylib.  From Andy Fleming.

22) Try to short-circuit GRO flow compares using device provided RX
    hash, if provided.  From Tom Herbert.

The wireless and netfilter folks have been busy little bees too.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2064 commits)
  net/cxgb4: Fix referencing freed adapter
  ipv6: reallocate addrconf router for ipv6 address when lo device up
  fib_frontend: fix possible NULL pointer dereference
  rtnetlink: remove IFLA_BOND_SLAVE definition
  rtnetlink: remove check for fill_slave_info in rtnl_have_link_slave_info
  qlcnic: update version to 5.3.55
  qlcnic: Enhance logic to calculate msix vectors.
  qlcnic: Refactor interrupt coalescing code for all adapters.
  qlcnic: Update poll controller code path
  qlcnic: Interrupt code cleanup
  qlcnic: Enhance Tx timeout debugging.
  qlcnic: Use bool for rx_mac_learn.
  bonding: fix u64 division
  rtnetlink: add missing IFLA_BOND_AD_INFO_UNSPEC
  sfc: Use the correct maximum TX DMA ring size for SFC9100
  Add Shradha Shah as the sfc driver maintainer.
  net/vxlan: Share RX skb de-marking and checksum checks with ovs
  tulip: cleanup by using ARRAY_SIZE()
  ip_tunnel: clear IPCB in ip_tunnel_xmit() in case dst_link_failure() is called
  net/cxgb4: Don't retrieve stats during recovery
  ...
2014-01-25 11:17:34 -08:00
Linus Torvalds
a0fa1dd3cd Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler changes from Ingo Molnar:

 - Add the initial implementation of SCHED_DEADLINE support: a real-time
   scheduling policy where tasks that meet their deadlines and
   periodically execute their instances in less than their runtime quota
   see real-time scheduling and won't miss any of their deadlines.
   Tasks that go over their quota get delayed (Available to privileged
   users for now)

 - Clean up and fix preempt_enable_no_resched() abuse all around the
   tree

 - Do sched_clock() performance optimizations on x86 and elsewhere

 - Fix and improve auto-NUMA balancing

 - Fix and clean up the idle loop

 - Apply various cleanups and fixes

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (60 commits)
  sched: Fix __sched_setscheduler() nice test
  sched: Move SCHED_RESET_ON_FORK into attr::sched_flags
  sched: Fix up attr::sched_priority warning
  sched: Fix up scheduler syscall LTP fails
  sched: Preserve the nice level over sched_setscheduler() and sched_setparam() calls
  sched/core: Fix htmldocs warnings
  sched/deadline: No need to check p if dl_se is valid
  sched/deadline: Remove unused variables
  sched/deadline: Fix sparse static warnings
  m68k: Fix build warning in mac_via.h
  sched, thermal: Clean up preempt_enable_no_resched() abuse
  sched, net: Fixup busy_loop_us_clock()
  sched, net: Clean up preempt_enable_no_resched() abuse
  sched/preempt: Fix up missed PREEMPT_NEED_RESCHED folding
  sched/preempt, locking: Rework local_bh_{dis,en}able()
  sched/clock, x86: Avoid a runtime condition in native_sched_clock()
  sched/clock: Fix up clear_sched_clock_stable()
  sched/clock, x86: Use a static_key for sched_clock_stable
  sched/clock: Remove local_irq_disable() from the clocks
  sched/clock, x86: Rewrite cyc2ns() to avoid the need to disable IRQs
  ...
2014-01-20 10:42:08 -08:00
Linus Torvalds
6ffbe7d1fa Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core locking changes from Ingo Molnar:
 - futex performance increases: larger hashes, smarter wakeups
 - mutex debugging improvements
 - lots of SMP ordering documentation updates
 - introduce the smp_load_acquire(), smp_store_release() primitives.
   (There are WIP patches that make use of them - not yet merged)
 - lockdep micro-optimizations
 - lockdep improvement: better cover IRQ contexts
 - liblockdep at last. We'll continue to monitor how useful this is

* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
  futexes: Fix futex_hashsize initialization
  arch: Re-sort some Kbuild files to hopefully help avoid some conflicts
  futexes: Avoid taking the hb->lock if there's nothing to wake up
  futexes: Document multiprocessor ordering guarantees
  futexes: Increase hash table size for better performance
  futexes: Clean up various details
  arch: Introduce smp_load_acquire(), smp_store_release()
  arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h
  arch: Move smp_mb__{before,after}_atomic_{inc,dec}.h into asm/atomic.h
  locking/doc: Rename LOCK/UNLOCK to ACQUIRE/RELEASE
  mutexes: Give more informative mutex warning in the !lock->owner case
  powerpc: Full barrier for smp_mb__after_unlock_lock()
  rcu: Apply smp_mb__after_unlock_lock() to preserve grace periods
  Documentation/memory-barriers.txt: Downgrade UNLOCK+BLOCK
  locking: Add an smp_mb__after_unlock_lock() for UNLOCK+BLOCK barrier
  Documentation/memory-barriers.txt: Document ACCESS_ONCE()
  Documentation/memory-barriers.txt: Prohibit speculative writes
  Documentation/memory-barriers.txt: Add long atomic examples to memory-barriers.txt
  Documentation/memory-barriers.txt: Add needed ACCESS_ONCE() calls to memory-barriers.txt
  Revert "smp/cpumask: Make CONFIG_CPUMASK_OFFSTACK=y usable without debug dependency"
  ...
2014-01-20 10:23:08 -08:00
Finn Thain
56931d7369 m68k/mac: Make SCC reset work more reliably
For SCC initialization we cannot assume that the control register is in
the correct state to accept a register pointer. So first read from the
control register in order to "sync" up.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-01-19 11:53:22 +01:00
Peter Zijlstra
54b278b50b m68k: Fix build warning in mac_via.h
Fengguang Wu's kbuild test robot reported the following new m68k warnings:

     In file included from drivers/nubus/nubus.c:22:0:
  >> arch/m68k/include/asm/mac_via.h:262:47: warning: 'struct irq_desc' declared inside parameter list [enabled by default]
  >> arch/m68k/include/asm/mac_via.h:262:47: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]

Caused by the reworking of the generic local_bh{dis,en}able() code.

To fix it, forward declare 'struct irq_desc'.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Fixes: c795eb55e740 ("sched/preempt, locking: Rework local_bh_{dis,en}able()")
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: geert@linux-m68k.org
Link: http://lkml.kernel.org/r/20140112212456.GQ7572@laptop.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-01-16 09:27:02 +01:00
Michael Schmitz
a0b7b24226 m68k/irq - Use polled IRQ flag for MFP timer cascaded interrupts
Some Atari hardware has no capacity to raise interrupts (e.g.
network or USB adapter hardware attached via ROM port). The driver
interrupt routine is called from a timer interrupt (timer D) in
these cases, using chained device specific pseudo interrupts
(IRQ_MFP_TIMER1 ff.)

These interrupts will more often than not, return IRQ_NONE as
there is not always work for the device handler when called.
Too many unhandled interrupts will result in the interrupt
being disabled by the stuck interrupt watchdog.

As preferred option to flag interrupts as needing exclusion
from the watchdog mechanism, tglx added the IRQ_IS_POLLED flag
for use in such a case. Currently, two interrupts need to use
this flag. Add more users as needed.

Signed-off-by: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2014-01-13 09:29:10 +01:00
Peter Zijlstra
93ea02bb84 arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h
We're going to be adding a few new barrier primitives, and in order to
avoid endless duplication make more agressive use of
asm-generic/barrier.h.

Change the asm-generic/barrier.h such that it allows partial barrier
definitions and fills out the rest with defaults.

There are a few architectures (m32r, m68k) that could probably
do away with their barrier.h file entirely but are kept for now due to
their unconventional nop() implementation.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Michael Ellerman <michael@ellerman.id.au>
Cc: Michael Neuling <mikey@neuling.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Victor Kaplansky <VICTORK@il.ibm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/20131213150640.846368594@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-01-12 10:37:15 +01:00
Geert Uytterhoeven
a16f9a42a5 m68k: Update defconfigs for v3.13-rc1
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-12-30 21:29:05 +01:00
Geert Uytterhoeven
bbb519cd5c m68k/defconfig: Enable EARLY_PRINTK
It's too valuable for debugging to be disabled.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-12-30 21:11:27 +01:00
Geert Uytterhoeven
f6fc30dbb7 m68k/mm: kmap spelling/grammar fixes
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-12-30 21:01:11 +01:00
Geert Uytterhoeven
245b815c3f m68k: Convert arch/m68k/kernel/traps.c to pr_*()
Also fix a few printf-style formats, to get rid of the following compiler
warnings when DEBUG is enabled:

arch/m68k/kernel/traps.c: In function ‘access_error060’:
arch/m68k/kernel/traps.c:166: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long unsigned int’
arch/m68k/kernel/traps.c: In function ‘bus_error030’:
arch/m68k/kernel/traps.c:568: warning: format ‘%#lx’ expects type ‘long unsigned int’, but argument 2 has type ‘void *’
arch/m68k/kernel/traps.c:682: warning: format ‘%#lx’ expects type ‘long unsigned int’, but argument 2 has type ‘void *’

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-12-30 21:01:11 +01:00
Geert Uytterhoeven
8e398f6381 m68k: Convert arch/m68k/mm/fault.c to pr_*()
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-12-30 21:01:10 +01:00
Geert Uytterhoeven
4e25c0e92f m68k/mm: Check for mm != NULL in do_page_fault() debug code
When DEBUG is enabled, do_page_fault() may dereference a NULL pointer,
causing recursive bus errors.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-12-30 21:01:09 +01:00
Geert Uytterhoeven
9da4a8d919 m68k/defconfig: Disable /sbin/hotplug fork-bomb by default
Cfr. commit 7934779a69 ("Driver-Core: disable
/sbin/hotplug by default").

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-12-30 21:01:08 +01:00
David S. Miller
e3fec2f74f lib: Add missing arch generic-y entries for asm-generic/hash.h
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-17 21:26:19 -05:00
Geert Uytterhoeven
27d632d27c m68k/atari: Hide RTC_PORT() macro from rtc-cmos
Rename RTC_PORT() to ATARI_RTC_PORT(), as the rtc-cmos RTC driver uses the
presence of this macro to enable support for the second NVRAM bank, which
Atari doesn't have ("Unable to handle kernel access at virtual address
00ff8965").

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-12-08 11:03:22 +01:00
Geert Uytterhoeven
8a09cec25f m68k/amiga,atari: Fix specifying multiple debug= parameters
Since commit d6713b4091 ("m68k: early
parameter support"), the user can specify multiple debug consoles using the
"debug=" kernel command line parameter.
However, as there's only a single struct console object, which is reused,
it would actually register the same console object multiple times, causing
the following warning:

WARNING: CPU: 0 PID: 0 at kernel/printk/printk.c:2233 register_console+0x36/
console 'debug0' already registered

Make sure to register the console object only once, to avoid the warning.

Note that still only one console (the one corresponding to the last
"debug=" parameter) will be active at the same time, as the .write() method
of the already registered console object is overwritten by a subsequent
"debug=" parameter.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-12-08 11:03:21 +01:00
Geert Uytterhoeven
c6188d0f57 m68k/defconfig: Use ext4 for ext2/ext3 file systems
This reduces the kernel image size by ca. 160 KiB.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-12-08 11:03:20 +01:00
Geert Uytterhoeven
7bc1e4d8d5 m68k: Add support to export bootinfo in procfs
Add optional support to export the bootinfo used to boot the kernel in a
"bootinfo" file in procfs.  This is useful with kexec.

This is based on the similar feature for ATAGS on ARM.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-12-08 11:01:48 +01:00
Geert Uytterhoeven
7d5f5fa276 m68k: Add kexec support
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-12-08 11:01:47 +01:00
Geert Uytterhoeven
50190edb2a m68k/amiga: Provide mach_random_get_entropy()
Use the beam position registers, which provide at least 17 bits of data
changing at 1.79 MHz.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:25 +01:00
Geert Uytterhoeven
017cecee99 m68k: Add infrastructure for machine-specific random_get_entropy()
On m68k, get_cycles() (the default implementation for random_get_entropy())
always returns zero, providing no entropy for the random driver.

Add a hook where platforms can provide their own implementation, and wire
it up in the infrastructure provided by commit
61875f30da ("random: allow architectures to
optionally define random_get_entropy()").

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:24 +01:00
Geert Uytterhoeven
7a15dd5c4b m68k/atari: Call paging_init() before nf_init()
nf_init() uses virt_to_phys(), which depends on m68k_memoffset being set and
module_fixup() having been called, but this is only done in paging_init().
Hence call paging_init() before nf_init().

This went unnoticed, as virt_to_phys() is a no-op on Atari, unless you start
fiddling with the memory blocks in the bootinfo manually.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:23 +01:00
Geert Uytterhoeven
371001e502 m68k: Remove superfluous inclusions of <asm/bootinfo.h>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:22 +01:00
Geert Uytterhoeven
abe48101c1 m68k/UAPI: Use proper types (endianness/size) in <asm/bootinfo*.h>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:21 +01:00
Geert Uytterhoeven
cf288bd5b1 m68k/UAPI: Move VME Board ID definition to <asm/bootinfo-vme.h>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:21 +01:00
Geert Uytterhoeven
8693d6167e m68k/UAPI: Move Macintosh model definitions to <asm/bootinfo-mac.h>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:20 +01:00
Geert Uytterhoeven
f3bd09e3db m68k/UAPI: Move HP300 model definitions to <asm/bootinfo-hp300.h>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:19 +01:00
Geert Uytterhoeven
7678e77d2a m68k/UAPI: Move Apollo model definitions to <asm/bootinfo-apollo.h>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:18 +01:00
Geert Uytterhoeven
7bc449688b m68k/UAPI: Move Amiga model/chipset definitions to <asm/bootinfo-amiga.h>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:17 +01:00
Geert Uytterhoeven
799300840c m68k/UAPI: Move generic definitions to <asm/bootinfo.h>
Move generic definitions used by bootstraps to uapi/asm/bootinfo.h:
  - Machine types,
  - CPU, FPU, and MMU types,
  - struct mem_info.

Keep a copy of struct mem_info for in-kernel use, and rename it to struct
m68k_mem_info, as the exported one will be modified later.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:16 +01:00
Geert Uytterhoeven
4c3c522bce m68k/UAPI: Disintegrate arch/m68k/include/asm/bootinfo.h
Export the bootinfo definitions that are used by bootstrap loaders, and
split them up in generic and platform-specific parts.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:15 +01:00
Geert Uytterhoeven
4edf07fd8f m68k/vme: Remove unused mvme_bdid_ptr
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:14 +01:00
Geert Uytterhoeven
bdd47c9fc1 m68k/mac: Move struct mac_booter_data to <asm/macintosh.h>
struct mac_booter_data is no longer part of the bootinfo API, hence move it
from <asm/bootinfo.h> to <asm/macintosh.h>, dropping all unused fields in
the process.

Also remove the no longer used mac_booter_data pointer from head.S.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:14 +01:00
Geert Uytterhoeven
958903d6f0 m68k: Drop remainings and API of BOOTINFO_COMPAT_1_0
Drop remainings and API for backwards compatibility with bootinfo interface
version 1.0.  This was used when booting a 2.1.x or newer kernel on Amiga,
Atari, or Mac using a bootstrap for kernel 2.0.x.

Everybody upgraded his bootstrap a long time ago, so this can go.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:13 +01:00
Geert Uytterhoeven
7ca1e52dc8 m68k: head.S - Correct date and spelling
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:12 +01:00
Geert Uytterhoeven
29a2020357 m68k: The bootinfo is located right after the kernel
Since the introduction of init sections (which are located after BSS), the
bootinfo is no longer located right after the BSS, but after all kernel
sections.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:11 +01:00
Geert Uytterhoeven
bd9ba8f40e zorro/UAPI: Use proper types (endianness/size) in <linux/zorro.h>
Fix member definitions for non-native userspace handling:
  - All multi-byte values are big-endian, hence use __be*,
  - All pointers are 32-bit pointers under AmigaOS, but unused (except for
    cd_BoardAddr) under Linux, hence use __be32.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:09 +01:00
Geert Uytterhoeven
6112ea0862 zorro: ZTWO_VADDR() should return "void __iomem *"
ZTWO_VADDR() converts from physical to virtual I/O addresses, so it should
return "void __iomem *" instead of "unsigned long".

This allows to drop several casts, but requires adding a few casts to
accomodate legacy driver frameworks that store "unsigned long" I/O
addresses.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:07 +01:00
Geert Uytterhoeven
c293738e6d zorro: Do not allocate zorro_autocon[] statically
Currently the array of Zorro devices is allocated statically, wasting
up to 4.5 KiB when running an Amiga or multi-platform kernel on a machine
with no or a handful of Zorro expansion cards. Convert it to conditional
dynamic memory allocation to fix this.

amiga_parse_bootinfo() still needs to store some information about the
detected Zorro devices, at a time even the bootmem allocator is not yet
available.  This is now handled using a much smaller array (typically less
than 0.5 KiB), which is __initdata and thus freed later.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:03 +01:00
Geert Uytterhoeven
6074a13934 m68k/setup: Use pr_*() and __func__ instead of plain printk()
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:02 +01:00
Geert Uytterhoeven
51b9310f0a m68k/defconfig: Make NFS_V4 modular instead of builtin
This reduces the kernel image size by ca. 100 KiB, while still allowing
NFS root.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:01 +01:00
Geert Uytterhoeven
f16b89bc3c m68k/mac: Fix comment about iop_*_present flags setup timing
This is no longer done from iop_init()

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:09:00 +01:00
Geert Uytterhoeven
7b3e8de9b3 m68k/sun3: Dynamically allocate the table to track IOMMU use
As Sun 3 kernels cannot be multi-platform due to the different Sun 3 MMU
type, it made sense to statically allocate the table to track IOMMU use.

However, Sun 3x kernels can be multi-platform. Furthermore, Sun 3x uses
a larger table than Sun 3 (8192 bytes instead of 512 bytes).

Hence switch to dynamic allocation of this table using the bootmem
allocator to avoid wasting 8192 bytes when not running on a Sun 3x.
As this allocator returns zeroed memory, there's no need to explicitly
initialize the table to zeroes.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:08:59 +01:00
Geert Uytterhoeven
a4df02a217 m68k: Mark functions only called from setup_arch() __init
Some functions that are only called (indirectly) from setup_arch() lack
__init annotations.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26 11:08:54 +01:00
Kent Overstreet
7988613b0e block: Convert bio_for_each_segment() to bvec_iter
More prep work for immutable biovecs - with immutable bvecs drivers
won't be able to use the biovec directly, they'll need to use helpers
that take into account bio->bi_iter.bi_bvec_done.

This updates callers for the new usage without changing the
implementation yet.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "Ed L. Cashin" <ecashin@coraid.com>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Lars Ellenberg <drbd-dev@lists.linbit.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Paul Clements <Paul.Clements@steeleye.com>
Cc: Jim Paris <jim@jtan.com>
Cc: Geoff Levand <geoff@infradead.org>
Cc: Yehuda Sadeh <yehuda@inktank.com>
Cc: Sage Weil <sage@inktank.com>
Cc: Alex Elder <elder@inktank.com>
Cc: ceph-devel@vger.kernel.org
Cc: Joshua Morris <josh.h.morris@us.ibm.com>
Cc: Philip Kelleher <pjk1939@linux.vnet.ibm.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Neil Brown <neilb@suse.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux390@de.ibm.com
Cc: Nagalakshmi Nandigama <Nagalakshmi.Nandigama@lsi.com>
Cc: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Cc: support@lsi.com
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Guo Chao <yan@linux.vnet.ibm.com>
Cc: Asai Thambi S P <asamymuthupa@micron.com>
Cc: Selvan Mani <smani@micron.com>
Cc: Sam Bradshaw <sbradshaw@micron.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: Quoc-Son Anh <quoc-sonx.anh@intel.com>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Seth Jennings <sjenning@linux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Jan Kara <jack@suse.cz>
Cc: linux-m68k@lists.linux-m68k.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: drbd-user@lists.linbit.com
Cc: nbd-general@lists.sourceforge.net
Cc: cbe-oss-dev@lists.ozlabs.org
Cc: xen-devel@lists.xensource.com
Cc: virtualization@lists.linux-foundation.org
Cc: linux-raid@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: DL-MPTFusionLinux@lsi.com
Cc: linux-scsi@vger.kernel.org
Cc: devel@driverdev.osuosl.org
Cc: linux-fsdevel@vger.kernel.org
Cc: cluster-devel@redhat.com
Cc: linux-mm@kvack.org
Acked-by: Geoff Levand <geoff@infradead.org>
2013-11-23 22:33:49 -08:00
Kent Overstreet
4f024f3797 block: Abstract out bvec iterator
Immutable biovecs are going to require an explicit iterator. To
implement immutable bvecs, a later patch is going to add a bi_bvec_done
member to this struct; for now, this patch effectively just renames
things.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "Ed L. Cashin" <ecashin@coraid.com>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Lars Ellenberg <drbd-dev@lists.linbit.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Geoff Levand <geoff@infradead.org>
Cc: Yehuda Sadeh <yehuda@inktank.com>
Cc: Sage Weil <sage@inktank.com>
Cc: Alex Elder <elder@inktank.com>
Cc: ceph-devel@vger.kernel.org
Cc: Joshua Morris <josh.h.morris@us.ibm.com>
Cc: Philip Kelleher <pjk1939@linux.vnet.ibm.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Neil Brown <neilb@suse.de>
Cc: Alasdair Kergon <agk@redhat.com>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: dm-devel@redhat.com
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux390@de.ibm.com
Cc: Boaz Harrosh <bharrosh@panasas.com>
Cc: Benny Halevy <bhalevy@tonian.com>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Nicholas A. Bellinger" <nab@linux-iscsi.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Chris Mason <chris.mason@fusionio.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Dave Kleikamp <shaggy@kernel.org>
Cc: Joern Engel <joern@logfs.org>
Cc: Prasad Joshi <prasadjoshi.linux@gmail.com>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: KONISHI Ryusuke <konishi.ryusuke@lab.ntt.co.jp>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Ben Myers <bpm@sgi.com>
Cc: xfs@oss.sgi.com
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Guo Chao <yan@linux.vnet.ibm.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Asai Thambi S P <asamymuthupa@micron.com>
Cc: Selvan Mani <smani@micron.com>
Cc: Sam Bradshaw <sbradshaw@micron.com>
Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: "Roger Pau Monné" <roger.pau@citrix.com>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Jiang Liu <jiang.liu@huawei.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Jerome Marchand <jmarchand@redhat.com>
Cc: Joe Perches <joe@perches.com>
Cc: Peng Tao <tao.peng@emc.com>
Cc: Andy Adamson <andros@netapp.com>
Cc: fanchaoting <fanchaoting@cn.fujitsu.com>
Cc: Jie Liu <jeff.liu@oracle.com>
Cc: Sunil Mushran <sunil.mushran@gmail.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Namjae Jeon <namjae.jeon@samsung.com>
Cc: Pankaj Kumar <pankaj.km@samsung.com>
Cc: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: Mel Gorman <mgorman@suse.de>6
2013-11-23 22:33:47 -08:00
Linus Torvalds
4007162647 Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq cleanups from Ingo Molnar:
 "This is a multi-arch cleanup series from Thomas Gleixner, which we
  kept to near the end of the merge window, to not interfere with
  architecture updates.

  This series (motivated by the -rt kernel) unifies more aspects of IRQ
  handling and generalizes PREEMPT_ACTIVE"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  preempt: Make PREEMPT_ACTIVE generic
  sparc: Use preempt_schedule_irq
  ia64: Use preempt_schedule_irq
  m32r: Use preempt_schedule_irq
  hardirq: Make hardirq bits generic
  m68k: Simplify low level interrupt handling code
  genirq: Prevent spurious detection for unconditionally polled interrupts
2013-11-19 10:40:00 -08:00
Linus Torvalds
f13399f033 Kconfig cleanups for v3.13
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Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming

Pull Kconfig cleanups from Mark Salter:
 "Remove some unused config options from C6X and clean up PC_PARPORT
  dependencies.  The latter was discussed here:

    https://lkml.org/lkml/2013/10/8/12"

* tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming:
  c6x: remove unused COMMON_CLKDEV Kconfig parameter
  Kconfig cleanup (PARPORT_PC dependencies)
  x86: select ARCH_MIGHT_HAVE_PC_PARPORT
  unicore32: select ARCH_MIGHT_HAVE_PC_PARPORT
  sparc: select ARCH_MIGHT_HAVE_PC_PARPORT
  sh: select ARCH_MIGHT_HAVE_PC_PARPORT
  powerpc: select ARCH_MIGHT_HAVE_PC_PARPORT
  parisc: select ARCH_MIGHT_HAVE_PC_PARPORT
  mips: select ARCH_MIGHT_HAVE_PC_PARPORT
  microblaze: select ARCH_MIGHT_HAVE_PC_PARPORT
  m68k: select ARCH_MIGHT_HAVE_PC_PARPORT
  ia64: select ARCH_MIGHT_HAVE_PC_PARPORT
  arm: select ARCH_MIGHT_HAVE_PC_PARPORT
  alpha: select ARCH_MIGHT_HAVE_PC_PARPORT
  c6x: remove unused parameter in Kconfig
2013-11-15 14:05:15 -08:00
Kirill A. Shutemov
f84c914b98 m68k: handle pgtable_page_ctor() fail
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-15 09:32:17 +09:00
Thomas Gleixner
00d1a39e69 preempt: Make PREEMPT_ACTIVE generic
No point in having this bit defined by architecture.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20130917183629.090698799@linutronix.de
2013-11-13 20:21:47 +01:00
Thomas Gleixner
54197e43a4 hardirq: Make hardirq bits generic
There is no reason for per arch hardirq bits. Make them all generic

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20130917183628.534494408@linutronix.de
2013-11-13 20:21:46 +01:00
Thomas Gleixner
09f90f6685 m68k: Simplify low level interrupt handling code
The low level interrupt entry code of m68k contains the following:

    add_preempt_count(HARDIRQ_OFFSET);

    do_IRQ();
	irq_enter();
	    add_preempt_count(HARDIRQ_OFFSET);
	handle_interrupt();    
	irq_exit();    
	    sub_preempt_count(HARDIRQ_OFFSET);
	    if (in_interrupt())
       	       return; <---- On m68k always taken!
	    if (local_softirq_pending())
       	       do_softirq();

    sub_preempt_count(HARDIRQ_OFFSET);
    if (in_hardirq())
       return;
    if (status_on_stack_has_interrupt_priority_mask > 0)
       return;
    if (local_softirq_pending())
       do_softirq();

    ret_from_exception:
	if (interrupted_context_is_kernel)
	   return:
	....

I tried to find a proper explanation for this, but the changelog is
sparse and there are no mails explaining it further. But obviously
this relates to the interrupt priority levels of the m68k and tries to
be extra clever with nested interrupts. Though this cleverness just
adds code bloat to the interrupt hotpath.

For the common case of non nested interrupts the code runs through two
extra conditionals to the only important one, which checks whether the
return is to kernel or user space.

For the nested case the checks for in_hardirq() and the priority mask
value on stack catch only the case where the nested interrupt happens
inside the hard irq context of the first interrupt. If the nested
interrupt happens while the first interrupt handles soft interrupts,
then these extra checks buy nothing. The nested interrupt will fall
through to the final kernel/user space return check at
ret_from_exception.

Changing the code flow in the following way:

    do_IRQ();
	irq_enter();
	    add_preempt_count(HARDIRQ_OFFSET);
	handle_interrupt();    
	irq_exit();    
	    sub_preempt_count(HARDIRQ_OFFSET);
	    if (in_interrupt())
       	       return;
	    if (local_softirq_pending())
       	       do_softirq();

    ret_from_exception:
	if (interrupted_context_is_kernel)
	   return:

makes the region protected by the hardirq count slightly smaller and
the softirq handling is invoked with a minimal deeper stack. But
otherwise it's completely functional equivalent and saves 104 bytes of
text in arch/m68k/kernel/entry.o.

This modification allows us further to get rid of the limitations
which m68k puts on the preempt_count layout, so we can make the
preempt count bits completely generic.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Linux/m68k <linux-m68k@vger.kernel.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1311112052360.30673@ionos.tec.linutronix.de
2013-11-13 20:21:46 +01:00
Linus Torvalds
39cf275a1a Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler changes from Ingo Molnar:
 "The main changes in this cycle are:

   - (much) improved CONFIG_NUMA_BALANCING support from Mel Gorman, Rik
     van Riel, Peter Zijlstra et al.  Yay!

   - optimize preemption counter handling: merge the NEED_RESCHED flag
     into the preempt_count variable, by Peter Zijlstra.

   - wait.h fixes and code reorganization from Peter Zijlstra

   - cfs_bandwidth fixes from Ben Segall

   - SMP load-balancer cleanups from Peter Zijstra

   - idle balancer improvements from Jason Low

   - other fixes and cleanups"

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (129 commits)
  ftrace, sched: Add TRACE_FLAG_PREEMPT_RESCHED
  stop_machine: Fix race between stop_two_cpus() and stop_cpus()
  sched: Remove unnecessary iteration over sched domains to update nr_busy_cpus
  sched: Fix asymmetric scheduling for POWER7
  sched: Move completion code from core.c to completion.c
  sched: Move wait code from core.c to wait.c
  sched: Move wait.c into kernel/sched/
  sched/wait: Fix __wait_event_interruptible_lock_irq_timeout()
  sched: Avoid throttle_cfs_rq() racing with period_timer stopping
  sched: Guarantee new group-entities always have weight
  sched: Fix hrtimer_cancel()/rq->lock deadlock
  sched: Fix cfs_bandwidth misuse of hrtimer_expires_remaining
  sched: Fix race on toggling cfs_bandwidth_used
  sched: Remove extra put_online_cpus() inside sched_setaffinity()
  sched/rt: Fix task_tick_rt() comment
  sched/wait: Fix build breakage
  sched/wait: Introduce prepare_to_wait_event()
  sched/wait: Add ___wait_cond_timeout() to wait_event*_timeout() too
  sched: Remove get_online_cpus() usage
  sched: Fix race in migrate_swap_stop()
  ...
2013-11-12 10:20:12 +09:00
Linus Torvalds
0a759b2466 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven:
 "Summary:
   - __put_user_unaligned may/will be used by btrfs
   - m68k part of a global cleanup"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Remove deprecated IRQF_DISABLED
  m68k/m68knommu: Implement __get_user_unaligned/__put_user_unaligned()
2013-11-11 18:17:07 +09:00
Mark Salter
1a7f6be5c9 m68k: select ARCH_MIGHT_HAVE_PC_PARPORT
Architectures which support CONFIG_PARPORT_PC should select
ARCH_MIGHT_HAVE_PC_PARPORT.

Signed-off-by: Mark Salter <msalter@redhat.com>
Acked by: Geert Uytterhoeven <geert@linux-m68k.org>
CC: linux-m68k@lists.linux-m68k.org
2013-10-23 15:59:52 -04:00
Michael Opdenacker
77a4279678 m68k: Remove deprecated IRQF_DISABLED
This patch proposes to remove the IRQF_DISABLED flag from m68k architecture
code. It's a NOOP since 2.6.35 and it will be removed one day.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-09-26 09:54:16 +02:00
Peter Zijlstra
a787870924 sched, arch: Create asm/preempt.h
In order to prepare to per-arch implementations of preempt_count move
the required bits into an asm-generic header and use this for all
archs.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-h5j0c1r3e3fk015m30h8f1zx@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-25 14:07:50 +02:00
Martin Schwidefsky
0244ad004a Remove GENERIC_HARDIRQ config option
After the last architecture switched to generic hard irqs the config
options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code
for !CONFIG_GENERIC_HARDIRQS can be removed.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-09-13 15:09:52 +02:00
Johannes Weiner
759496ba64 arch: mm: pass userspace fault flag to generic fault handler
Unlike global OOM handling, memory cgroup code will invoke the OOM killer
in any OOM situation because it has no way of telling faults occuring in
kernel context - which could be handled more gracefully - from
user-triggered faults.

Pass a flag that identifies faults originating in user space from the
architecture-specific fault handlers to generic code so that memcg OOM
handling can be improved.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: azurIt <azurit@pobox.sk>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-12 15:38:01 -07:00
Geert Uytterhoeven
21e884bafa m68k/m68knommu: Implement __get_user_unaligned/__put_user_unaligned()
fs/btrfs/ioctl.c: In function ‘btrfs_ioctl_file_extent_same’:
fs/btrfs/ioctl.c:2802: error: implicit declaration of function ‘__put_user_unaligned’

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-09-10 11:06:17 +02:00
Linus Torvalds
833ae40b51 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu fixes from Greg Ungerer:
 "Just a small collection of cleanups and fixes this time, no big
  changes.  The most interresting are to make the m68k and m68knommu
  consistently use CONFIG_IOMAP, clean out some unused board config
  options and flush the cache on signal stack creation"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: remove 16 unused boards in Kconfig.machine
  m68k: define 'VM_DATA_DEFAULT_FLAGS' no matter whether has 'NOMMU' or not
  m68knommu: user generic iomap to support ioread*/iowrite*
  m68k/coldfire: flush cache when creating the signal stack frame
  m68knommu: Mark functions only called from setup_arch() __init
2013-09-09 09:04:46 -07:00
Linus Torvalds
27703bb4a6 PTR_RET() is a weird name, and led to some confusing usage. We ended
up with PTR_ERR_OR_ZERO(), and replacing or fixing all the usages.
 
 This has been sitting in linux-next for a whole cycle.
 
 Thanks,
 Rusty.
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Merge tag 'PTR_RET-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull PTR_RET() removal patches from Rusty Russell:
 "PTR_RET() is a weird name, and led to some confusing usage.  We ended
  up with PTR_ERR_OR_ZERO(), and replacing or fixing all the usages.

  This has been sitting in linux-next for a whole cycle"

[ There are still some PTR_RET users scattered about, with some of them
  possibly being new, but most of them existing in Rusty's tree too.  We
  have that

      #define PTR_RET(p) PTR_ERR_OR_ZERO(p)

  thing in <linux/err.h>, so they continue to work for now  - Linus ]

* tag 'PTR_RET-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  GFS2: Replace PTR_RET with PTR_ERR_OR_ZERO
  Btrfs: volume: Replace PTR_RET with PTR_ERR_OR_ZERO
  drm/cma: Replace PTR_RET with PTR_ERR_OR_ZERO
  sh_veu: Replace PTR_RET with PTR_ERR_OR_ZERO
  dma-buf: Replace PTR_RET with PTR_ERR_OR_ZERO
  drivers/rtc: Replace PTR_RET with PTR_ERR_OR_ZERO
  mm/oom_kill: remove weird use of ERR_PTR()/PTR_ERR().
  staging/zcache: don't use PTR_RET().
  remoteproc: don't use PTR_RET().
  pinctrl: don't use PTR_RET().
  acpi: Replace weird use of PTR_RET.
  s390: Replace weird use of PTR_RET.
  PTR_RET is now PTR_ERR_OR_ZERO(): Replace most.
  PTR_RET is now PTR_ERR_OR_ZERO
2013-09-04 17:31:11 -07:00
Linus Torvalds
6832d9652f Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timers/nohz changes from Ingo Molnar:
 "It mostly contains fixes and full dynticks off-case optimizations, by
  Frederic Weisbecker"

* 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
  nohz: Include local CPU in full dynticks global kick
  nohz: Optimize full dynticks's sched hooks with static keys
  nohz: Optimize full dynticks state checks with static keys
  nohz: Rename a few state variables
  vtime: Always debug check snapshot source _before_ updating it
  vtime: Always scale generic vtime accounting results
  vtime: Optimize full dynticks accounting off case with static keys
  vtime: Describe overriden functions in dedicated arch headers
  m68k: hardirq_count() only need preempt_mask.h
  hardirq: Split preempt count mask definitions
  context_tracking: Split low level state headers
  vtime: Fix racy cputime delta update
  vtime: Remove a few unneeded generic vtime state checks
  context_tracking: User/kernel broundary cross trace events
  context_tracking: Optimize context switch off case with static keys
  context_tracking: Optimize guest APIs off case with static key
  context_tracking: Optimize main APIs off case with static key
  context_tracking: Ground setup for static key use
  context_tracking: Remove full dynticks' hacky dependency on wide context tracking
  nohz: Only enable context tracking on full dynticks CPUs
  ...
2013-09-04 09:36:54 -07:00
Linus Torvalds
a923874198 PCI changes for the v3.12 merge window:
PCI device hotplug
     - Use PCIe native hotplug, not ACPI hotplug, when possible (Neil Horman)
     - Assign resources on per-host bridge basis (Yinghai Lu)
 
   MPS (Max Payload Size)
     - Allow larger MPS settings below hotplug-capable Root Port (Yijing Wang)
     - Add warnings about unsafe MPS settings (Yijing Wang)
     - Simplify interface and messages (Bjorn Helgaas)
 
   SR-IOV
     - Return -ENOSYS on non-SR-IOV devices (Stefan Assmann)
     - Update NumVFs register when disabling SR-IOV (Yijing Wang)
 
   Virtualization
     - Add bus and slot reset support (Alex Williamson)
     - Fix ACS (Access Control Services) issues (Alex Williamson)
 
   Miscellaneous
     - Simplify PCIe Capability accessors (Bjorn Helgaas)
     - Add pcibios_pm_ops for arch-specific hibernate stuff (Sebastian Ott)
     - Disable decoding during BAR sizing only when necessary (Zoltan Kiss)
     - Delay enabling bridges until they're needed (Yinghai Lu)
     - Split Designware support into Synopsys and Exynos parts (Jingoo Han)
     - Convert class code to use dev_groups (Greg Kroah-Hartman)
     - Cleanup Designware and Exynos I/O access wrappers (Seungwon Jeon)
     - Fix bridge I/O window alignment (Bjorn Helgaas)
     - Add pci_wait_for_pending_transaction() (Casey Leedom)
     - Use devm_ioremap_resource() in Marvell driver (Tushar Behera)
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Merge tag 'pci-v3.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI changes from Bjorn Helgaas:

  PCI device hotplug:
    - Use PCIe native hotplug, not ACPI hotplug, when possible (Neil Horman)
    - Assign resources on per-host bridge basis (Yinghai Lu)

  MPS (Max Payload Size):
    - Allow larger MPS settings below hotplug-capable Root Port (Yijing Wang)
    - Add warnings about unsafe MPS settings (Yijing Wang)
    - Simplify interface and messages (Bjorn Helgaas)

  SR-IOV:
    - Return -ENOSYS on non-SR-IOV devices (Stefan Assmann)
    - Update NumVFs register when disabling SR-IOV (Yijing Wang)

  Virtualization:
    - Add bus and slot reset support (Alex Williamson)
    - Fix ACS (Access Control Services) issues (Alex Williamson)

  Miscellaneous:
    - Simplify PCIe Capability accessors (Bjorn Helgaas)
    - Add pcibios_pm_ops for arch-specific hibernate stuff (Sebastian Ott)
    - Disable decoding during BAR sizing only when necessary (Zoltan Kiss)
    - Delay enabling bridges until they're needed (Yinghai Lu)
    - Split Designware support into Synopsys and Exynos parts (Jingoo Han)
    - Convert class code to use dev_groups (Greg Kroah-Hartman)
    - Cleanup Designware and Exynos I/O access wrappers (Seungwon Jeon)
    - Fix bridge I/O window alignment (Bjorn Helgaas)
    - Add pci_wait_for_pending_transaction() (Casey Leedom)
    - Use devm_ioremap_resource() in Marvell driver (Tushar Behera)

* tag 'pci-v3.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (63 commits)
  PCI/ACPI: Fix _OSC ordering to allow PCIe hotplug use when available
  PCI: exynos: Add I/O access wrappers
  PCI: designware: Drop "addr" arg from dw_pcie_readl_rc()/dw_pcie_writel_rc()
  PCI: Remove pcie_cap_has_devctl()
  PCI: Support PCIe Capability Slot registers only for ports with slots
  PCI: Remove PCIe Capability version checks
  PCI: Allow PCIe Capability link-related register access for switches
  PCI: Add offsets of PCIe capability registers
  PCI: Tidy bitmasks and spacing of PCIe capability definitions
  PCI: Remove obsolete comment reference to pci_pcie_cap2()
  PCI: Clarify PCI_EXP_TYPE_PCI_BRIDGE comment
  PCI: Rename PCIe capability definitions to follow convention
  PCI: Warn if unsafe MPS settings detected
  PCI: Fix MPS peer-to-peer DMA comment syntax
  PCI: Disable decoding for BAR sizing only when it was actually enabled
  PCI: Add comment about needing pci_msi_off() even when CONFIG_PCI_MSI=n
  PCI: Add pcibios_pm_ops for optional arch-specific hibernate functionality
  PCI: Don't restrict MPS for slots below Root Ports
  PCI: Simplify MPS test for Downstream Port
  PCI: Remove unnecessary check for pcie_get_mps() failure
  ...
2013-09-03 16:24:35 -07:00
Paul Bolle
c065edde73 m68k: remove 16 unused boards in Kconfig.machine
The Kconfig entries for 16 boards are unused. Remove these, together
with the 6 entries that these boards select, but are also unused.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-08-26 16:51:14 +10:00
Greg Ungerer
0c7e59c46e m68k: define 'VM_DATA_DEFAULT_FLAGS' no matter whether has 'NOMMU' or not
Define 'VM_DATA_DEFAULT_FLAGS' when 'NOMMU' to pass compiling.

So move it from "include/asm/page_mm.h to "include/asm/page.h"

The related make:

  make ARCH=m68k randconfig
  make ARCH=m68k menuconfig
    choose cross compiler
    disable MMU support
  make ARCH=m68k V=1 EXTRA_CFLAGS=-W

The related error:

  security/selinux/hooks.c: In function ‘selinux_init’:
  security/selinux/hooks.c:5821:21: error: ‘VM_DATA_DEFAULT_FLAGS’ undeclared (first use in this function)

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-08-26 16:51:14 +10:00
Greg Ungerer
f79b859212 m68knommu: user generic iomap to support ioread*/iowrite*
There is no reason we cannot use the generic iomap support to give us
the ioread* and iowrite* family of IO access functions. The m68k arch with
MMU enabled does, so this makes us consistent for all m68k now.

Some potentially valid drivers will fail to compile without these,
for example:

drivers/i2c/busses/i2c-ocores.c:81:2: error: implicit declaration of
function ‘iowrite8’ [-Werror=implicit-function-declaration]
drivers/i2c/busses/i2c-ocores.c:86:2: error: implicit declaration of
function ‘iowrite16’ [-Werror=implicit-function-declaration]
drivers/i2c/busses/i2c-ocores.c:91:2: error: implicit declaration of
function ‘iowrite32’ [-Werror=implicit-function-declaration]
drivers/i2c/busses/i2c-ocores.c:96:2: error: implicit declaration of
function ‘ioread8’ [-Werror=implicit-function-declaration]
drivers/i2c/busses/i2c-ocores.c:101:2: error: implicit declaration of
function ‘ioread16’ [-Werror=implicit-function-declaration]
drivers/i2c/busses/i2c-ocores.c:106:2: error: implicit declaration of
function ‘ioread32’ [-Werror=implicit-function-declaration]

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-08-26 16:51:13 +10:00
Alexander Stein
42cb38bcb7 m68k/coldfire: flush cache when creating the signal stack frame
When the signal stack frame is created, it must be flushed in order to
make sure the cache fetches the correct data.
Without cache flush the icache might pick up old cached data from an older
signal stack frame if the signal is raised again very fast.
In case of copyback the data cache muist be pushed first, but is untested.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-08-26 16:51:13 +10:00
Geert Uytterhoeven
df592eb5dc m68knommu: Mark functions only called from setup_arch() __init
Some functions that are only called (indirectly) from setup_arch() lack
__init annotations.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-08-26 16:51:13 +10:00
Geert Uytterhoeven
55490050df m68k/atari: ARAnyM - Always use physical addresses in NatFeat calls
Pointers passed to ARAnyM NatFeat calls should be physical addresses,
not virtual addresses. This worked before because on Atari, physical and
virtual kernel addresses are the same, as long as normal kernel memory
is concerned.

Correct the few remaining places where virtual addresses were used.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-08-23 12:49:01 +02:00
Geert Uytterhoeven
3c776a0791 m68k: Ignore disabled HSYNC interrupt on Atari for irqs_disabled()
When running a multi-platform kernel on Atari, warning messages like
the following may be printed:

    WARNING: at /root/linux-3.10.1/init/main.c:698 do_one_initcall+0x12e/0x13a()
    initcall param_sysfs_init+0x0/0x1a4 returned with disabled interrupts

This is caused by the different definitions of ALLOWINT for Atari and
other platforms:

    #if defined(MACH_ATARI_ONLY)
    #define ALLOWINT        (~0x500)
    #else
    #define ALLOWINT        (~0x700)
    #endif

On Atari, we want to disable the high-frequency HSYNC interrupt:
  - On Atari-only kernels, this is handled completely through ALLOWINT,
  - On multi-platform kernels, this is handled by disabling the HSYNC
    interrupt from the interrupt handler.

However, as in the latter case arch_irqs_disabled_flags() didn't ignore the
disabling of the HSYNC interrupt, irqs_disabled() would detect false
positives.

Ignore the HSYNC interrupt when running on Atari to fix this.
For single-platform kernels this test is optimized away by the compiler.

Reported-by: Thorsten Glaser <tg@debian.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Thorsten Glaser <tg@debian.org>
2013-08-23 12:49:01 +02:00
Frederic Weisbecker
a703f9b724 m68k: hardirq_count() only need preempt_mask.h
The m68k irqflags implementation needs to check hardirq
context in some cases.

As it is a very low level header file, it's better to
include preempt_mask.h rather than hardirq.h when the
only purpose is to use irq context APIs. This way we
can avoid future header circular dependencies when
vtime.h will expand to use static keys.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
2013-08-14 17:14:52 +02:00
Andreas Schwab
ea077b1b96 m68k: Truncate base in do_div()
Explicitly truncate the second operand of do_div() to 32 bits to guard
against bogus code calling it with a 64-bit divisor.

[Thorsten]

After upgrading from 3.2 to 3.10, mounting a btrfs volume fails with:

btrfs: setting nodatacow, compression disabled
btrfs: enabling auto recovery
btrfs: disk space caching is enabled
*** ZERO DIVIDE ***   FORMAT=2
Current process id is 722
BAD KERNEL TRAP: 00000000
Modules linked in: evdev mac_hid ext4 crc16 jbd2 mbcache btrfs xor lzo_compress zlib_deflate raid6_pq crc32c libcrc32c
PC: [<319535b2>] __btrfs_map_block+0x11c/0x119a [btrfs]
SR: 2000  SP: 30c1fab4  a2: 30f0faf0
d0: 00000000    d1: 00001000    d2: 00000000    d3: 00000000
d4: 00010000    d5: 00000000    a0: 3085c72c    a1: 3085c72c
Process mount (pid: 722, task=30f0faf0)
Frame format=2 instr addr=319535ae
Stack from 30c1faec:
        00000000 00000020 00000000 00001000 00000000 01401000 30253928 300ffc00
        00a843ac 3026f640 00000000 00010000 0009e250 00d106c0 00011220 00000000
        00001000 301c6830 0009e32a 000000ff 00000009 3085c72c 00000000 00000000
        30c1fd14 00000000 00000020 00000000 30c1fd14 0009e26c 00000020 00000003
        00000000 0009dd8a 300b0b6c 30253928 00a843ac 00001000 00000000 00000000
        0000a008 3194e76a 30253928 00a843ac 00001000 00000000 00000000 00000002
Call Trace: [<00001000>] kernel_pg_dir+0x0/0x1000

    [...]

Code: 222e ff74 2a2e ff5c 2c2e ff60 4c45 1402 <2d40> ff64 2d41 ff68 2205 4c2e 1800 ff68 4c04 0800 2041 d1c0 2206 4c2e 1400 ff68

[Geert]

As diagnosed by Andreas, fs/btrfs/volumes.c:__btrfs_map_block()
calls

    do_div(stripe_nr, stripe_len);

with stripe_len u64, while do_div() assumes the divisor is a 32-bit number.

Due to the lack of truncation in the m68k-specific implementation of
do_div(), the division is performed using the upper 32-bit word of
stripe_len, which is zero.

This was introduced by commit 53b381b3ab
("Btrfs: RAID5 and RAID6"), which changed the divisor from
map->stripe_len (struct map_lookup.stripe_len is int) to a 64-bit temporary.

Reported-by: Thorsten Glaser <tg@debian.org>
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Tested-by: Thorsten Glaser <tg@debian.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: stable@vger.kernel.org
2013-08-14 11:46:30 +02:00
Geert Uytterhoeven
e8184e10f8 m68k/atari: ARAnyM - Fix NatFeat module support
As pointed out by Andreas Schwab, pointers passed to ARAnyM NatFeat calls
should be physical addresses, not virtual addresses.

Fortunately on Atari, physical and virtual kernel addresses are the same,
as long as normal kernel memory is concerned, so this usually worked fine
without conversion.

But for modules, pointers to literal strings are located in vmalloc()ed
memory. Depending on the version of ARAnyM, this causes the nf_get_id()
call to just fail, or worse, crash ARAnyM itself with e.g.

    Gotcha! Illegal memory access. Atari PC = $968c

This is a big issue for distro kernels, who want to have all drivers as
loadable modules in an initrd.

Add a wrapper for nf_get_id() that copies the literal to the stack to
work around this issue.

Reported-by: Thorsten Glaser <tg@debian.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: stable@vger.kernel.org
2013-08-14 11:46:30 +02:00
Yinghai Lu
928bea9648 PCI: Delay enabling bridges until they're needed
We currently enable PCI bridges after scanning a bus and assigning
resources.  This is often done in arch code.

This patch changes this so we don't enable a bridge until necessary, i.e.,
until we enable a PCI device behind the bridge.  We do this in the generic
pci_enable_device() path, so this also removes the arch-specific code to
enable bridges.

[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2013-07-25 12:35:03 -06:00
Rusty Russell
8c6ffba0ed PTR_RET is now PTR_ERR_OR_ZERO(): Replace most.
Sweep of the simple cases.

Cc: netdev@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-07-15 11:25:01 +09:30
Linus Torvalds
7f0ef0267e Merge branch 'akpm' (updates from Andrew Morton)
Merge first patch-bomb from Andrew Morton:
 - various misc bits
 - I'm been patchmonkeying ocfs2 for a while, as Joel and Mark have been
   distracted.  There has been quite a bit of activity.
 - About half the MM queue
 - Some backlight bits
 - Various lib/ updates
 - checkpatch updates
 - zillions more little rtc patches
 - ptrace
 - signals
 - exec
 - procfs
 - rapidio
 - nbd
 - aoe
 - pps
 - memstick
 - tools/testing/selftests updates

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (445 commits)
  tools/testing/selftests: don't assume the x bit is set on scripts
  selftests: add .gitignore for kcmp
  selftests: fix clean target in kcmp Makefile
  selftests: add .gitignore for vm
  selftests: add hugetlbfstest
  self-test: fix make clean
  selftests: exit 1 on failure
  kernel/resource.c: remove the unneeded assignment in function __find_resource
  aio: fix wrong comment in aio_complete()
  drivers/w1/slaves/w1_ds2408.c: add magic sequence to disable P0 test mode
  drivers/memstick/host/r592.c: convert to module_pci_driver
  drivers/memstick/host/jmb38x_ms: convert to module_pci_driver
  pps-gpio: add device-tree binding and support
  drivers/pps/clients/pps-gpio.c: convert to module_platform_driver
  drivers/pps/clients/pps-gpio.c: convert to devm_* helpers
  drivers/parport/share.c: use kzalloc
  Documentation/accounting/getdelays.c: avoid strncpy in accounting tool
  aoe: update internal version number to v83
  aoe: update copyright date
  aoe: perform I/O completions in parallel
  ...
2013-07-03 17:12:13 -07:00
Linus Torvalds
862f001254 PCI changes for the v3.11 merge window:
PCI device hotplug
     - Add pci_alloc_dev() interface (Gu Zheng)
     - Add pci_bus_get()/put() for reference counting (Jiang Liu)
     - Fix SR-IOV reference count issues (Jiang Liu)
     - Remove unused acpi_pci_roots list (Jiang Liu)
 
   MSI
     - Conserve interrupt resources on x86 (Alexander Gordeev)
 
   AER
     - Force fatal severity when component has been reset (Betty Dall)
     - Reset link below Root Port as well as Downstream Port (Betty Dall)
     - Fix "Firmware first" flag setting (Bjorn Helgaas)
     - Don't parse HEST for non-PCIe devices (Bjorn Helgaas)
 
   ASPM
     - Warn when we can't disable ASPM as driver requests (Bjorn Helgaas)
 
   Miscellaneous
     - Add CircuitCo PCI IDs (Darren Hart)
     - Add AMD CZ SATA and SMBus PCI IDs (Shane Huang)
     - Work around Ivytown NTB BAR size issue (Jon Mason)
     - Detect invalid initial BAR values (Kevin Hao)
     - Add pcibios_release_device() (Sebastian Ott)
     - Fix powerpc & sparc PCI_UNKNOWN power state usage (Bjorn Helgaas)
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Merge tag 'pci-v3.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI changes from Bjorn Helgaas:
 "PCI device hotplug
    - Add pci_alloc_dev() interface (Gu Zheng)
    - Add pci_bus_get()/put() for reference counting (Jiang Liu)
    - Fix SR-IOV reference count issues (Jiang Liu)
    - Remove unused acpi_pci_roots list (Jiang Liu)

  MSI
    - Conserve interrupt resources on x86 (Alexander Gordeev)

  AER
    - Force fatal severity when component has been reset (Betty Dall)
    - Reset link below Root Port as well as Downstream Port (Betty Dall)
    - Fix "Firmware first" flag setting (Bjorn Helgaas)
    - Don't parse HEST for non-PCIe devices (Bjorn Helgaas)

  ASPM
    - Warn when we can't disable ASPM as driver requests (Bjorn Helgaas)

  Miscellaneous
    - Add CircuitCo PCI IDs (Darren Hart)
    - Add AMD CZ SATA and SMBus PCI IDs (Shane Huang)
    - Work around Ivytown NTB BAR size issue (Jon Mason)
    - Detect invalid initial BAR values (Kevin Hao)
    - Add pcibios_release_device() (Sebastian Ott)
    - Fix powerpc & sparc PCI_UNKNOWN power state usage (Bjorn Helgaas)"

* tag 'pci-v3.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (51 commits)
  MAINTAINERS: Add ACPI folks for ACPI-related things under drivers/pci
  PCI: Add CircuitCo vendor ID and subsystem ID
  PCI: Use pdev->pm_cap instead of pci_find_capability(..,PCI_CAP_ID_PM)
  PCI: Return early on allocation failures to unindent mainline code
  PCI: Simplify IOV implementation and fix reference count races
  PCI: Drop redundant setting of bus->is_added in virtfn_add_bus()
  unicore32/PCI: Remove redundant call of pci_bus_add_devices()
  m68k/PCI: Remove redundant call of pci_bus_add_devices()
  PCI / ACPI / PM: Use correct power state strings in messages
  PCI: Fix comment typo for pcie_pme_remove()
  PCI: Rename pci_release_bus_bridge_dev() to pci_release_host_bridge_dev()
  PCI: Fix refcount issue in pci_create_root_bus() error recovery path
  ia64/PCI: Clean up pci_scan_root_bus() usage
  PCI/AER: Reset link for devices below Root Port or Downstream Port
  ACPI / APEI: Force fatal AER severity when component has been reset
  PCI/AER: Remove "extern" from function declarations
  PCI/AER: Move AER severity defines to aer.h
  PCI/AER: Set dev->__aer_firmware_first only for matching devices
  PCI/AER: Factor out HEST device type matching
  PCI/AER: Don't parse HEST table for non-PCIe devices
  ...
2013-07-03 16:31:35 -07:00
Jiang Liu
3e548a9e88 mm/m68k: fix build warning of unused variable
Fix build warning of unused variable:

  arch/m68k/mm/init.c: In function 'mem_init': arch/m68k/mm/init.c:151:6: warning: unused variable 'i' [-Wunused-variable]

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:39 -07:00
Jiang Liu
b69a9787b1 mm/m68k: prepare for killing free_all_bootmem_node()
Prepare for killing free_all_bootmem_node() by using free_all_bootmem().

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:38 -07:00
Jiang Liu
9671468f1e mm/m68k: prepare for removing num_physpages and simplify mem_init()
Prepare for removing num_physpages and simplify mem_init().

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:36 -07:00
Jiang Liu
0c98853473 mm: concentrate modification of totalram_pages into the mm core
Concentrate code to modify totalram_pages into the mm core, so the arch
memory initialized code doesn't need to take care of it.  With these
changes applied, only following functions from mm core modify global
variable totalram_pages: free_bootmem_late(), free_all_bootmem(),
free_all_bootmem_node(), adjust_managed_page_count().

With this patch applied, it will be much more easier for us to keep
totalram_pages and zone->managed_pages in consistence.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: <sworddragon2@aol.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Jianguo Wu <wujianguo@huawei.com>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Michel Lespinasse <walken@google.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wen Congyang <wency@cn.fujitsu.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:33 -07:00
Jiang Liu
dbe67df4ba mm: enhance free_reserved_area() to support poisoning memory with zero
Address more review comments from last round of code review.
1) Enhance free_reserved_area() to support poisoning freed memory with
   pattern '0'. This could be used to get rid of poison_init_mem()
   on ARM64.
2) A previous patch has disabled memory poison for initmem on s390
   by mistake, so restore to the original behavior.
3) Remove redundant PAGE_ALIGN() when calling free_reserved_area().

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: <sworddragon2@aol.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Jianguo Wu <wujianguo@huawei.com>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Michel Lespinasse <walken@google.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wen Congyang <wency@cn.fujitsu.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:32 -07:00
Jiang Liu
11199692d8 mm: change signature of free_reserved_area() to fix building warnings
Change signature of free_reserved_area() according to Russell King's
suggestion to fix following build warnings:

  arch/arm/mm/init.c: In function 'mem_init':
  arch/arm/mm/init.c:603:2: warning: passing argument 1 of 'free_reserved_area' makes integer from pointer without a cast [enabled by default]
    free_reserved_area(__va(PHYS_PFN_OFFSET), swapper_pg_dir, 0, NULL);
    ^
  In file included from include/linux/mman.h:4:0,
                   from arch/arm/mm/init.c:15:
  include/linux/mm.h:1301:22: note: expected 'long unsigned int' but argument is of type 'void *'
   extern unsigned long free_reserved_area(unsigned long start, unsigned long end,

   mm/page_alloc.c: In function 'free_reserved_area':
>> mm/page_alloc.c:5134:3: warning: passing argument 1 of 'virt_to_phys' makes pointer from integer without a cast [enabled by default]
   In file included from arch/mips/include/asm/page.h:49:0,
                    from include/linux/mmzone.h:20,
                    from include/linux/gfp.h:4,
                    from include/linux/mm.h:8,
                    from mm/page_alloc.c:18:
   arch/mips/include/asm/io.h:119:29: note: expected 'const volatile void *' but argument is of type 'long unsigned int'
   mm/page_alloc.c: In function 'free_area_init_nodes':
   mm/page_alloc.c:5030:34: warning: array subscript is below array bounds [-Warray-bounds]

Also address some minor code review comments.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: <sworddragon2@aol.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Jianguo Wu <wujianguo@huawei.com>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Michel Lespinasse <walken@google.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wen Congyang <wency@cn.fujitsu.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:32 -07:00
Linus Torvalds
ab53485739 Merge branch 'exotic-arch-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull "exotic" arch fixes from Geert Uytterhoeven:
 "This is a collection of several exotic architecture fixes, and a few
  other fixes for issues that were detected while doing the former"

* 'exotic-arch-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: (35 commits)
  lib: Move fonts from drivers/video/console/ to lib/fonts/
  console/font: Refactor font support code selection logic
  Revert "staging/solo6x10: depend on CONFIG_FONTS"
  input: cros_ec_keyb_clear_keyboard() depends on CONFIG_PM_SLEEP
  score: Wire up asm-generic/xor.h
  score: Remove unneeded <asm/dma-mapping.h>
  openrisc: Wire up asm-generic/xor.h
  h8300/boot: Use POSIX "$((..))" instead of bashism "$[...]"
  h8300: Mark H83002 and H83048 CPU support broken
  h8300: Switch h8300 to drivers/Kconfig
  h8300: Limit timer channel ranges in Kconfig
  h8300: Wire up asm-generic/xor.h
  h8300: Fill the system call table using a CALL() macro
  h8300: Fix <asm/tlb.h>
  h8300: Hardcode symbol prefixes in asm sources
  h8300: add missing definition for read_barries_depends()
  frv: head.S - Remove commented-out initialization code
  cris: Wire up asm-generic/vga.h
  parport: disable PC-style parallel port support on cris
  console: Disable VGA text console support on cris
  ...
2013-07-03 11:12:08 -07:00
Linus Torvalds
0e97456ab5 Merge branch 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven.

* 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/q40: Enable PC parallel port in defconfig
  m68k/q40: Undefine insl/outsl before redefining them
  m68k/uaccess: Fix asm constraints for userspace access
  swim: Release memory region after incorrect return/goto
  m68k/irq: Vector ints need a valid interrupt handler
  m68k/math-emu: unsigned issue, 'unsigned long' will never be less than zero
  m68k: remove CONFIG_EARLY_PRINTK dependency on CONFIG_EMBEDDED, default to n
  m68k/sun3: remove inline marking of EXPORT_SYMBOL functions
  [SCSI] a3000: use module_platform_driver_probe()
  [SCSI] a4000t: use module_platform_driver_probe()
  m68k: Remove inline strcpy() and strcat() implementations
2013-07-03 11:11:23 -07:00
Al Viro
40d158e618 consolidate io_remap_pfn_range definitions
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-06-29 12:46:35 +04:00
Geert Uytterhoeven
ee89bd6bc7 lib: Move fonts from drivers/video/console/ to lib/fonts/
Several drivers need font support independent of CONFIG_VT, cfr. commit
9cbce8d7e1dae0744ca4f68d62aa7de18196b6f4, "console/font: Refactor font
support code selection logic").
Hence move the fonts and their support logic from drivers/video/console/ to
its own library directory lib/fonts/.
This also allows to limit processing of drivers/video/console/Makefile to
CONFIG_VT=y again.

[Kevin Hilman <khilman@linaro.org>: Update arch/arm/boot/compressed/Makefile]
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-06-28 10:28:22 +02:00
Geert Uytterhoeven
980f3a7315 m68k/q40: Enable PC parallel port in defconfig
Enable the PC parallel port and other related options in the Q40-specific
and multi-platform defconfigs.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-06-24 19:44:30 +02:00
Geert Uytterhoeven
db8ac55ca7 m68k/q40: Undefine insl/outsl before redefining them
To use the PC parallel port driver on Q40, we need non-standard versions of
the insl/outsl accessors. Make sure to undefine them first, to kill this
compiler warning:

In file included from drivers/parport/parport_pc.c:67:
arch/m68k/include/asm/parport.h:14:1: warning: "insl" redefined
In file included from arch/m68k/include/asm/io.h:4,
                 from include/linux/scatterlist.h:10,
                 from include/linux/dma-mapping.h:9,
                 from drivers/parport/parport_pc.c:54:
arch/m68k/include/asm/io_mm.h:370:1: warning: this is the location of the previous definition
In file included from drivers/parport/parport_pc.c:67:
arch/m68k/include/asm/parport.h:15:1: warning: "outsl" redefined
In file included from arch/m68k/include/asm/io.h:4,
                 from include/linux/scatterlist.h:10,
                 from include/linux/dma-mapping.h:9,
                 from drivers/parport/parport_pc.c:54:
arch/m68k/include/asm/io_mm.h:373:1: warning: this is the location of the previous definition

Reported-by: Thorsten Glaser <tg@debian.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-06-24 19:44:19 +02:00
Geert Uytterhoeven
631d8b674f m68k/uaccess: Fix asm constraints for userspace access
When compiling a MMU kernel with CPU_HAS_ADDRESS_SPACES=n (e.g. "MMU=y
allnoconfig": "echo CONFIG_MMU=y > allno.config && make KCONFIG_ALLCONFIG=1
allnoconfig"), we use plain "move" instead of "moves", and I got:

  CC      arch/m68k/lib/uaccess.o
{standard input}: Assembler messages:
{standard input}:47: Error: operands mismatch -- statement `move.b %a0,(%a1)' ignored

This happens because plain "move" doesn't support byte transfers between
memory and address registers, while "moves" does.

Fix the asm constraints for __generic_copy_from_user(),
__generic_copy_to_user(), and __clear_user() to only use data registers
when accessing userspace.

Also, relax the asm constraints for 16-bit userspace accesses in
__put_user() and __get_user(), as both "move" and "moves" do support
such transfers between memory and address registers.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-06-24 19:44:19 +02:00
Thomas Bogendoerfer
378f7ca6aa m68k/irq: Vector ints need a valid interrupt handler
To get vectored interrupts working we need to switch from the default
handler handle_bad_irq() to something more sensible. Tested on a MVME177
board.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-06-24 19:44:19 +02:00
Chen Gang
ddc2fc2c5b m68k/math-emu: unsigned issue, 'unsigned long' will never be less than zero
'oldmant.m32[1]' is 'unsigned long' which can never be '< 0', and the
original author wanted to check whether the highest bit is set.

So make the bit test explicit (which is better than casting from 'unsigned
long' to 'long').

The related warning: (with EXTRA_CFLAGS=-W ARCH=m68k for allmodconfig)
  arch/m68k/math-emu/fp_arith.c:522:4: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-06-24 19:44:19 +02:00
Finn Thain
220921a0d1 m68k: remove CONFIG_EARLY_PRINTK dependency on CONFIG_EMBEDDED, default to n
Allow CONFIG_EARLY_PRINTK without requiring both CONFIG_EMBEDDED and
CONFIG_DEBUG. Default to disabled.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-06-24 19:44:18 +02:00
Denis Efremov
5ecf85f082 m68k/sun3: remove inline marking of EXPORT_SYMBOL functions
EXPORT_SYMBOL and inline directives are contradictory to each other.
The patch fixes this inconsistency.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Denis Efremov <yefremov.denis@gmail.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-06-24 19:44:18 +02:00
Geert Uytterhoeven
d346a5db02 m68k: Remove inline strcpy() and strcat() implementations
Gcc may replace calls to standard string functions by open code and/or
calls to other standard string functions. If the replacement function is
not available out-of-line, link errors will happen.

To avoid this, the out-of-line versions were provided by
arch/m68k/lib/string.c, but they were usually not linked in anymore as
typically none of its symbols are referenced by built-in code.
However, if any module would need them, they would not be available.

Hence remove the inline strcpy() and strcat() implementations, remove
arch/m68k/lib/string.c, and let the generic string library code handle it.

Impact on a typical kernel build seems minimal or nonexistent:

-      .text : 0x00001000 - 0x002aac74   (2728 KiB)
-      .data : 0x002ada48 - 0x00392148   ( 914 KiB)
+      .text : 0x00001000 - 0x002aacf4   (2728 KiB)
+      .data : 0x002adac8 - 0x00392148   ( 914 KiB)

See also commit e00c73ee05 ("m68k: Remove
inline strlen() implementation").

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-06-24 19:44:18 +02:00
Jiang Liu
d9e6ba5fed m68k/PCI: Remove redundant call of pci_bus_add_devices()
pci_scan_bus() has called pci_bus_add_devices() already, so remove the
redundant call of pci_bus_add_devices().  subsys_init() callbacks will be
invoked before device_init() callbacks, so it should be safe to remove the
redundant calls.

[bhelgaas: split unicore32 into a separate patch]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Greg Ungerer <gerg@uclinux.org>
2013-06-14 17:38:39 -06:00
Linus Torvalds
17d8dfcda6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu fix from Greg Ungerer:
 "A single fix for compilation breakage to many of the ColdFire CPU
  targets"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: only use local gpio_request_one if not using GPIOLIB
2013-06-08 11:50:17 -07:00
Linus Torvalds
aa4f608478 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k fix from Geert Uytterhoeven:
 "A boot lock-up on Mac, also destined for stable"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/mac: Fix unexpected interrupt with CONFIG_EARLY_PRINTK
2013-06-03 18:09:42 +09:00
Finn Thain
df66834a43 m68k/mac: Fix unexpected interrupt with CONFIG_EARLY_PRINTK
The present code does not wait for the SCC to finish resetting itself
before trying to initialise the device. The result is that the SCC
interrupt sources become enabled (if they weren't already). This leads to
an early boot crash (unexpected interrupt) given CONFIG_EARLY_PRINTK. Fix
this by adding a delay. A successful reset disables the interrupt sources.

Also, after the reset for channel A setup, the SCC then gets a second
reset for channel B setup which leaves channel A uninitialised again. Fix
this by performing the reset only once.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Cc: stable@vger.kernel.org
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-05-31 10:43:18 +02:00
Greg Ungerer
cf6c31fc5c m68k: only use local gpio_request_one if not using GPIOLIB
Compiling for targets that use the local gpio code (not GPIOLIB) fail to
compile with:

  CC      arch/m68k/platform/coldfire/device.o
In file included from include/linux/gpio.h:45:0,
                 from arch/m68k/platform/coldfire/device.c:15:
/home/gerg/new-wave.git/linux-3.x/arch/m68k/include/asm/gpio.h:89:19: error: static declaration of ‘gpio_request_one’ follows non-static declaration
include/asm-generic/gpio.h:195:12: note: previous declaration of ‘gpio_request_one’ was here

Fix by conditionally using the local gpio_request_one() function based on
!CONFIG_GPIOLIB.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-05-29 16:56:45 +10:00
Geert Uytterhoeven
37c14e83ee m68k: Update defconfigs for v3.9
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-05-28 10:22:06 +02:00
Mikael Pettersson
e4f2dfbb5e m68k: implement futex.h to support userspace robust futexes and PI mutexes
Linux/M68K currently doesn't support robust futexes or PI mutexes.
The problem is that the futex code needs to perform certain ops
(cmpxchg, set, add, or, andn, xor) atomically on user-space
addresses, and M68K's lack of a futex.h causes those operations
to be unsupported and disabled.

This patch adds that support, but only for uniprocessor machines,
which is adequate for M68K.  For UP it's enough to disable preemption
to ensure mutual exclusion (futexes don't need to care about other
hardware agents), and the mandatory pagefault_disable() does just that.

This patch is closely based on the one I co-wrote for UP ARM back
in August 2008.  The main change is that this patch uses the C
get_user/put_user accessors instead of inline assembly code with
exception table fixups.

For non-MMU machines the new futex.h simply redirects to the generic
futex.h, so there is no functional change for them.

Tested on aranym with the glibc-2.17 test suite: no regressions, and
a number of mutex/condvar test cases went from failing to succeeding
(tst-mutexpi{5,5a,6,9}, tst-cond2[45], tst-robust[1-9], tst-robustpi[1-8]).
Also tested with glibc-2.18 HEAD and a local glibc patch to enable PI
mutexes: no regressions.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Acked-by: Andreas Schwab <schwab@linux-m68k.org>
[geert: Added removal of ""generic-y += futex.h"]
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-05-21 21:29:13 +02:00
Linus Torvalds
f741df1f3a - Artem's removal of dead code continues (RPX, MBX860)
- Two krealloc() abuse fixes
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Merge tag 'for-linus-20130509' of git://git.infradead.org/~dwmw2/random-2.6

Pull misc fixes from David Woodhouse:
 "This is some miscellaneous cleanups that don't really belong anywhere
  else (or were ignored), that have been sitting in linux-next for some
  time.  Two of them are fixes resulting from my audit of krealloc()
  usage that don't seem to have elicited any response when I posted
  them, and the other three are patches from Artem removing dead code."

* tag 'for-linus-20130509' of git://git.infradead.org/~dwmw2/random-2.6:
  pcmcia: remove RPX board stuff
  m68k: remove rpxlite stuff
  pcmcia: remove Motorola MBX860 support
  params: Fix potential memory leak in add_sysfs_param()
  dell-laptop: Fix krealloc() misuse in parse_da_table()
2013-05-10 09:09:47 -07:00
Linus Torvalds
977b58e1dd Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu updates from Greg Ungerer:
 "The bulk of the changes are generalizing the ColdFire v3 core support
  and adding in 537x CPU support.  Also a couple of other bug fixes, one
  to fix a reintroduction of a past bug in the romfs filesystem nommu
  support."

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68knommu: enable Timer on coldfire 532x
  m68knommu: fix ColdFire 5373/5329 QSPI base address
  m68knommu: add support for configuring a Freescale M5373EVB board
  m68knommu: add support for the ColdFire 537x family of CPUs
  m68knommu: make ColdFire M532x platform support more v3 generic
  m68knommu: create and use a common M53xx ColdFire class of CPUs
  m68k: remove unused asm/dbg.h
  m68k: Set ColdFire ACR1 cache mode depending on kernel configuration
  romfs: fix nommu map length to keep inside filesystem
  m68k: clean up unused "config ROMVECSIZE"
2013-05-10 07:22:35 -07:00
Linus Torvalds
5647ac0ad4 Removal of GENERIC_GPIO for v3.10
GENERIC_GPIO now synonymous with GPIOLIB. There are no longer any valid
 cases for enableing GENERIC_GPIO without GPIOLIB, even though it is
 possible to do so which has been causing confusion and breakage. This
 branch does the work to completely eliminate GENERIC_GPIO.
 
 However, it is not trivial to just create a branch to remove it. Over
 the course of the v3.9 cycle more code referencing GENERIC_GPIO has been
 added to linux-next that conflicts with this branch. The following must
 be done to resolve the conflicts when merging this branch into mainline:
 
 * "git grep CONFIG_GENERIC_GPIO" should return 0 hits. Matches should be
   replaced with CONFIG_GPIOLIB
 * "git grep '\bGENERIC_GPIO\b'" should return 1 hit in the Chinese
   documentation.
 * Selectors of GENERIC_GPIO should be turned into selectors of GPIOLIB
 * definitions of the option in architecture Kconfig code should be deleted.
 
 Stephen has 3 merge fixup patches[1] that do the above. They are currently
 applicable on mainline as of May 2nd.
 
 [1] http://www.mail-archive.com/linux-kernel@vger.kernel.org/msg428056.html
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Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux

Pull removal of GENERIC_GPIO from Grant Likely:
 "GENERIC_GPIO now synonymous with GPIOLIB.  There are no longer any
  valid cases for enableing GENERIC_GPIO without GPIOLIB, even though it
  is possible to do so which has been causing confusion and breakage.
  This branch does the work to completely eliminate GENERIC_GPIO."

* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux:
  gpio: update gpio Chinese documentation
  Remove GENERIC_GPIO config option
  Convert selectors of GENERIC_GPIO to GPIOLIB
  blackfin: force use of gpiolib
  m68k: coldfire: use gpiolib
  mips: pnx833x: remove requirement for GENERIC_GPIO
  openrisc: default GENERIC_GPIO to false
  avr32: default GENERIC_GPIO to false
  xtensa: remove explicit selection of GENERIC_GPIO
  sh: replace CONFIG_GENERIC_GPIO by CONFIG_GPIOLIB
  powerpc: remove redundant GENERIC_GPIO selection
  unicore32: default GENERIC_GPIO to false
  unicore32: remove unneeded select GENERIC_GPIO
  arm: plat-orion: use GPIO driver on CONFIG_GPIOLIB
  arm: remove redundant GENERIC_GPIO selection
  mips: alchemy: require gpiolib
  mips: txx9: change GENERIC_GPIO to GPIOLIB
  mips: loongson: use GPIO driver on CONFIG_GPIOLIB
  mips: remove redundant GENERIC_GPIO select
2013-05-09 09:59:16 -07:00
Linus Torvalds
08d7676083 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull compat cleanup from Al Viro:
 "Mostly about syscall wrappers this time; there will be another pile
  with patches in the same general area from various people, but I'd
  rather push those after both that and vfs.git pile are in."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
  syscalls.h: slightly reduce the jungles of macros
  get rid of union semop in sys_semctl(2) arguments
  make do_mremap() static
  sparc: no need to sign-extend in sync_file_range() wrapper
  ppc compat wrappers for add_key(2) and request_key(2) are pointless
  x86: trim sys_ia32.h
  x86: sys32_kill and sys32_mprotect are pointless
  get rid of compat_sys_semctl() and friends in case of ARCH_WANT_OLD_COMPAT_IPC
  merge compat sys_ipc instances
  consolidate compat lookup_dcookie()
  convert vmsplice to COMPAT_SYSCALL_DEFINE
  switch getrusage() to COMPAT_SYSCALL_DEFINE
  switch epoll_pwait to COMPAT_SYSCALL_DEFINE
  convert sendfile{,64} to COMPAT_SYSCALL_DEFINE
  switch signalfd{,4}() to COMPAT_SYSCALL_DEFINE
  make SYSCALL_DEFINE<n>-generated wrappers do asmlinkage_protect
  make HAVE_SYSCALL_WRAPPERS unconditional
  consolidate cond_syscall and SYSCALL_ALIAS declarations
  teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long
  get rid of duplicate logics in __SC_....[1-6] definitions
2013-05-01 07:21:43 -07:00
Tejun Heo
196779b9b4 dump_stack: consolidate dump_stack() implementations and unify their behaviors
Both dump_stack() and show_stack() are currently implemented by each
architecture.  show_stack(NULL, NULL) dumps the backtrace for the
current task as does dump_stack().  On some archs, dump_stack() prints
extra information - pid, utsname and so on - in addition to the
backtrace while the two are identical on other archs.

The usages in arch-independent code of the two functions indicate
show_stack(NULL, NULL) should print out bare backtrace while
dump_stack() is used for debugging purposes when something went wrong,
so it does make sense to print additional information on the task which
triggered dump_stack().

There's no reason to require archs to implement two separate but mostly
identical functions.  It leads to unnecessary subtle information.

This patch expands the dummy fallback dump_stack() implementation in
lib/dump_stack.c such that it prints out debug information (taken from
x86) and invokes show_stack(NULL, NULL) and drops arch-specific
dump_stack() implementations in all archs except blackfin.  Blackfin's
dump_stack() does something wonky that I don't understand.

Debug information can be printed separately by calling
dump_stack_print_info() so that arch-specific dump_stack()
implementation can still emit the same debug information.  This is used
in blackfin.

This patch brings the following behavior changes.

* On some archs, an extra level in backtrace for show_stack() could be
  printed.  This is because the top frame was determined in
  dump_stack() on those archs while generic dump_stack() can't do that
  reliably.  It can be compensated by inlining dump_stack() but not
  sure whether that'd be necessary.

* Most archs didn't use to print debug info on dump_stack().  They do
  now.

An example WARN dump follows.

 WARNING: at kernel/workqueue.c:4841 init_workqueues+0x35/0x505()
 Hardware name: empty
 Modules linked in:
 CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.9.0-rc1-work+ #9
  0000000000000009 ffff88007c861e08 ffffffff81c614dc ffff88007c861e48
  ffffffff8108f50f ffffffff82228240 0000000000000040 ffffffff8234a03c
  0000000000000000 0000000000000000 0000000000000000 ffff88007c861e58
 Call Trace:
  [<ffffffff81c614dc>] dump_stack+0x19/0x1b
  [<ffffffff8108f50f>] warn_slowpath_common+0x7f/0xc0
  [<ffffffff8108f56a>] warn_slowpath_null+0x1a/0x20
  [<ffffffff8234a071>] init_workqueues+0x35/0x505
  ...

v2: CPU number added to the generic debug info as requested by s390
    folks and dropped the s390 specific dump_stack().  This loses %ksp
    from the debug message which the maintainers think isn't important
    enough to keep the s390-specific dump_stack() implementation.

    dump_stack_print_info() is moved to kernel/printk.c from
    lib/dump_stack.c.  Because linkage is per objecct file,
    dump_stack_print_info() living in the same lib file as generic
    dump_stack() means that archs which implement custom dump_stack()
    - at this point, only blackfin - can't use dump_stack_print_info()
    as that will bring in the generic version of dump_stack() too.  v1
    The v1 patch broke build on blackfin due to this issue.  The build
    breakage was reported by Fengguang Wu.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>	[s390 bits]
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Richard Kuo <rkuo@codeaurora.org>		[hexagon bits]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-30 17:04:02 -07:00
Linus Torvalds
165bc513f7 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k update from Geert Uytterhoeven.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Remove inline strlen() implementation
  m68k/atari: USB - add platform devices for EtherNAT/NetUSBee ISP1160 HCD
  m68k: Implement ndelay() based on the existing udelay() logic
  m68k/atari: EtherNAT - add interrupt chip definition for CPLD interrupts
  m68k/atari: EtherNEC - add platform device support
  m68k/atari: EtherNAT - platform device and IRQ support code
  m68k/atari: use dedicated irq_chip for timer D interrupts
  m68k/atari: ROM port ISA adapter support
  m68k: Add missing cmpxchg64() if CONFIG_RMW_INSNS=y
2013-04-30 10:08:44 -07:00
Linus Torvalds
8700c95adb Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP/hotplug changes from Ingo Molnar:
 "This is a pretty large, multi-arch series unifying and generalizing
  the various disjunct pieces of idle routines that architectures have
  historically copied from each other and have grown in random, wildly
  inconsistent and sometimes buggy directions:

   101 files changed, 455 insertions(+), 1328 deletions(-)

  this went through a number of review and test iterations before it was
  committed, it was tested on various architectures, was exposed to
  linux-next for quite some time - nevertheless it might cause problems
  on architectures that don't read the mailing lists and don't regularly
  test linux-next.

  This cat herding excercise was motivated by the -rt kernel, and was
  brought to you by Thomas "the Whip" Gleixner."

* 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
  idle: Remove GENERIC_IDLE_LOOP config switch
  um: Use generic idle loop
  ia64: Make sure interrupts enabled when we "safe_halt()"
  sparc: Use generic idle loop
  idle: Remove unused ARCH_HAS_DEFAULT_IDLE
  bfin: Fix typo in arch_cpu_idle()
  xtensa: Use generic idle loop
  x86: Use generic idle loop
  unicore: Use generic idle loop
  tile: Use generic idle loop
  tile: Enter idle with preemption disabled
  sh: Use generic idle loop
  score: Use generic idle loop
  s390: Use generic idle loop
  powerpc: Use generic idle loop
  parisc: Use generic idle loop
  openrisc: Use generic idle loop
  mn10300: Use generic idle loop
  mips: Use generic idle loop
  microblaze: Use generic idle loop
  ...
2013-04-30 07:50:17 -07:00
Jiang Liu
920f1ad081 mm/m68k: use common help functions to free reserved pages
Use common help functions to free reserved pages.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29 15:54:30 -07:00
Greg Ungerer
2842e5b00e m68knommu: enable Timer on coldfire 532x
This patch enables the initial Timer on coldfire 532x systems.
Without this, the scheduler will not be triggered and the system hangs,
after all sequential code is executed. It should also apply on later kernel
versions.

Signed-off-by: Christian Gieseler <christiangieseler@yahoo.de>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-04-29 09:17:59 +10:00
Greg Ungerer
42feae20fe m68knommu: fix ColdFire 5373/5329 QSPI base address
The base address of the QSPI hardware module should be 0xFC05C000.
Fix its definition.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-04-29 09:17:59 +10:00
Greg Ungerer
74169f98c7 m68knommu: add support for configuring a Freescale M5373EVB board
Add a configuration switch for supporting the Freescale M5373EVB board.
It is based on the newly added ColdFire 537x CPU support.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-04-29 09:17:59 +10:00
Greg Ungerer
e9d9dc6ac2 m68knommu: add support for the ColdFire 537x family of CPUs
The ColdFire 537x family is very similar internally to the ColdFire 532x
family. So with just a little extra configuration we can configure and
target them as well.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-04-29 09:17:58 +10:00
Greg Ungerer
e73cbe21ea m68knommu: make ColdFire M532x platform support more v3 generic
The M532x CPU platform support can be used on more ColdFire CPU families
than just the 532x types. So rename and reconfigure it to reflect that.
The ColdFire 537x family has virtualy identical internals to the 532x,
and so it will be able to share this code when we add support for them.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-04-29 09:17:58 +10:00
Greg Ungerer
6eac402783 m68knommu: create and use a common M53xx ColdFire class of CPUs
The current CONFIG_M532x support definitions are actually common to a larger
set of version 3 ColdFire CPU types. In the future we want to add support for
the 537x family. It is very similar to the 532x internally, and will be able
to use most of the same definitions.

Create a CONFIG_M53xx option that is enabled to support any of the common
532x and 537x CPU types. Convert the current users of CONFIG_M532x to use
CONFIG_M53xx instead.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-04-29 09:17:58 +10:00
Greg Ungerer
0d5340f93c m68k: remove unused asm/dbg.h
The contents of the m68k asm/dbg.h are never used, remove the file and
remove the one reference to it.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-04-29 09:17:58 +10:00
Stany MARCEL
a4eff487da m68k: Set ColdFire ACR1 cache mode depending on kernel configuration
For coldfire with MMU enabled, data cache did not follow the configuration but
was configured in writethrough mode.

Signed-off-by: Stany MARCEL <stany.marcel@novasys-ingenierie.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-04-29 09:17:57 +10:00
Paul Bolle
5143661ff8 m68k: clean up unused "config ROMVECSIZE"
Kconfig symbol ROMVECSIZE is unused since commit
f84f52a5c1 ("m68knommu: clean up linker
script"). Let's clean up its Kconfig entry too.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2013-04-29 09:17:57 +10:00
Thomas Gleixner
d190e8195b idle: Remove GENERIC_IDLE_LOOP config switch
All archs are converted over. Remove the config switch and the
fallback code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2013-04-17 10:39:38 +02:00
Michal Marek
e00c73ee05 m68k: Remove inline strlen() implementation
GCC can replace a strncat() call with constant second argument into a
strlen + store, which results in a link error:

ERROR: "strlen" [net/ipv4/ip_tunnel.ko] undefined!

The inline function is a simple for loop in C. Other architectures
either use an asm optimized variant, or use the generic function from
lib/string.c.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-04-16 21:35:43 +02:00
Michael Schmitz
01a18d1687 m68k/atari: USB - add platform devices for EtherNAT/NetUSBee ISP1160 HCD
Add platform devices used by the isp116x-hcd driver for EtherNAT and
NetUSBee. Note that the NetUSBee also contains a RTL8019 Ethernet chip,
so its platform device is used to cover the EtherNEC case, too.
Register definitions thanks to David Galvez <dgalvez75@gmail.com>

[Geert] Conditionalize isp1160_delay() definition

Signed-off-by: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-04-16 21:35:41 +02:00