Force /sbin/init off isolated cpus (unless every CPU is specified as an
isolcpu).
Users seem to think that the isolated CPUs shouldn't have much running on
them to begin with. That's fair enough: intuitive, I guess. It also means
that the cpu affinity masks of tasks will not include isolcpus by default,
which is also more intuitive, perhaps.
/sbin/init is spawned from the boot CPU's idle thread, and /sbin/init
starts the rest of userspace. So if the boot CPU is specified to be an
isolcpu, then prior to this patch, all of userspace will be run there.
(throw in a couple of plausible devinit -> cpuinit conversions I spotted
while we're here).
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Acked-by: Paul Jackson <pj@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The 'STABLE BRANCH' entry is duplicated, remove it.
Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br>
Cc: Greg KH <greg@kroah.com>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We removed 8250_acpi in 2.6.17. If we don't have PNPACPI turned on, we
won't find any ACPI serial devices, so mention this requirement in the
troubleshooting part of the documentation.
CONFIG_PNPACPI is already turned on in all the relevant defconfigs.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
After the previous patch to disable the kernel IPMI daemon if interrupts
were available, the issue of broken hardware was raised, and a reasonable
request to add an override was mode. So here it is.
Allow the user to force the kernel ipmi daemon on or off. This way,
hardware with broken interrupts or users that are not concerned with
performance can turn it on or off to their liking.
[akpm@osdl.org: save 4 bytes in vmlinux]
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Whomever said...
"When you meet someone now who is writing a compiler or hacking a Unix
kernel, at least you know they're not just doing it to pick up chicks."
...has obviously never met a _Linux_ kernel hacker.
Anyway, sometimes people confuse my email addresses, which is why I
really should add the proper one to CREDITS ;-).
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The last change for partport_pc did fix the common case for all PowerMacs,
but it broke the case for PCI multiport IO cards. In fact, the config
option CONFIG_PARPORT_PC_SUPERIO=y lead to a hard crash when cups probed
the parport driver. It enables the winbond and smsc probing.
Remove the PARPORT_BASE check again, parport_pc_find_nonpci_ports() will
take care of it. All powerpc configs should have
CONFIG_PARPORT_PC_SUPERIO=n, the code did not find anything on the chrp
boards we tested it on.
Tested on a G4/466 with a PCI card:
0001:10:13.0 Serial controller: Timedia Technology Co Ltd PCI2S550 (Dual 16550 UART) (rev 01) (prog-if 02 [16550])
Subsystem: Timedia Technology Co Ltd Unknown device 5079
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 53
Region 0: I/O ports at f2000800 [size=32]
Region 2: I/O ports at f2000870 [size=8]
Region 3: I/O ports at f2000860 [size=8]
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Clean up warnings in drivers/isdn by using long not int for the values
where we pass void * and cast to integer types. The code is ok (ok passing
the stuff this way isn't pretty but the code is valid). In all the cases I
checked out the right thing happens anyway but this removes all the
warnings.
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jeff Garzik <jeff@garzik.org>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Kill warning:
drivers/char/ip2/ip2main.c: In function âip2_loadmainâ:
drivers/char/ip2/ip2main.c:782: warning: label âout_classâ defined but not used
This driver's initialization (and cleanup of errors during init) is
extremely convoluted, and could stand to be transformed into the standard
unwinding-goto style of error cleanup.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Michael H. Warfield <mhw@wittsend.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
gcc issues the following warning:
drivers/char/ipmi/ipmi_si_intf.c: In function âinit_ipmi_siâ:
drivers/char/ipmi/ipmi_si_intf.c:1729: warning: âdata.irqâ may be used uninitialized in this function
This is indeed a bug. data.irq is completely uninitialized in some code
paths. Worse than that, data from a previous decode_dmi() run can easily
leak through successive calls.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
While reviewing the 'may be used uninitialized' bogus gcc warnings, I
noticed that an error code assignment was only needed if an error had
actually occured.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Cc: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add kernel-doc function headers in kernel/resource.c and use them in DocBook.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add kernel-doc function headers in kernel/dma.c and use it in DocBook.
Clean up kernel-doc in mca_dma.h (the colon (':') represents a
section header).
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It is a non-standard heap-sort algorithm implementation because the index
of child node is wrong . The sort function still outputs right result, but
the performance is O( n * ( log(n) + 1 ) ) , about 10% ~ 20% worse than
standard algorithm.
Signed-off-by: keios <keios.cn@gmail.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Acked-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Some uses of kallsyms_lookup() do not need to find out the name of a symbol
and its module's name it belongs. This is specially true in arch specific
code, which needs to unwind the stack to show the back trace during oops
(mips is an example). In this specific case, we just need to retreive the
function's size and the offset of the active intruction inside it.
Adds a new entry "kallsyms_lookup_size_offset()" This new entry does
exactly the same as kallsyms_lookup() but does not require any buffers to
store any names.
It returns 0 if it fails otherwise 1.
Signed-off-by: Franck Bui-Huu <vagabon.xyz@gmail.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Permit kmalloc() to make allocations of up to 32MB if so configured. This
may be useful under NOMMU conditions where vmalloc() can't do this.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
These patches make the kernel pass 64-bit inode numbers internally when
communicating to userspace, even on a 32-bit system. They are required
because some filesystems have intrinsic 64-bit inode numbers: NFS3+ and XFS
for example. The 64-bit inode numbers are then propagated to userspace
automatically where the arch supports it.
Problems have been seen with userspace (eg: ld.so) using the 64-bit inode
number returned by stat64() or getdents64() to differentiate files, and
failing because the 64-bit inode number space was compressed to 32-bits, and
so overlaps occur.
This patch:
Make filldir_t take a 64-bit inode number and struct kstat carry a 64-bit
inode number so that 64-bit inode numbers can be passed back to userspace.
The stat functions then returns the full 64-bit inode number where
available and where possible. If it is not possible to represent the inode
number supplied by the filesystem in the field provided by userspace, then
error EOVERFLOW will be issued.
Similarly, the getdents/readdir functions now pass the full 64-bit inode
number to userspace where possible, returning EOVERFLOW instead when a
directory entry is encountered that can't be properly represented.
Note that this means that some inodes will not be stat'able on a 32-bit
system with old libraries where they were before - but it does mean that
there will be no ambiguity over what a 32-bit inode number refers to.
Note similarly that directory scans may be cut short with an error on a
32-bit system with old libraries where the scan would work before for the
same reasons.
It is judged unlikely that this situation will occur because modern glibc
uses 64-bit capable versions of stat and getdents class functions
exclusively, and that older systems are unlikely to encounter
unrepresentable inode numbers anyway.
[akpm: alpha build fix]
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Make the pid.h macros look less revolting in an 80-col window.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This seems to have been missed when unifdef went in
via Sam's tree..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The previous hp100 changeset attempted to kill warnings, but was only
tested on !CONFIG_ISA platforms. The correct conditional compilation
setup involves tested CONFIG_ISA rather than just MODULE.
Fixes link on CONFIG_ISA platforms (i386) in current -git.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Commit 54dbc0c9eb is causing various
people's machines to fail to map PCI resources.
Revert it in preparation for addressing the show-APICs-in-/proc/iomem
requirement in a different manner.
Cc: Aaron Durbin <adurbin@google.com>
Cc: Andi Kleen <ak@muc.de>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Move the call to ib_register_device() later, since a device should not
be registered until it is completely read to be used. This fixes
crashes that occur if an upper-layer driver such as IPoIB is loaded
before the ehca module.
Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
The PSN used to generate the request following a RDMA read was
incorrect and some state booking wasn't maintained correctly. This
patch fixes that.
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Reorganize code relating to cma_get_net_info() and rdam_create_id() to
optimize error case handling (no need to alloc memory/etc. as part of
rdma_create_id() if input parameters are wrong).
Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Eliminate remove_list by using list_del_init() instead during device
removal handling.
Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
On reporting a route error, also include the status for the error,
rather than indicating a status of 0 when an error has occurred.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
The race is as follows:
A process : cma_process_remove() calls cma_remove_id_dev(),
which sets id state to CMA_DEVICE_REMOVAL and
calls wait_event(dev_remove).
B process : cma_req_handler() had incremented dev_remove,
and calls cma_acquire_ib_dev() and on failure
calls cma_release_remove(), which does a
wake_up of cma_process_remove(). Then
cma_req_handler() calls rdma_destroy_id();
A Process : cma_remove_id_dev() gets woken and checks the
state of id, and since it is still (wrongly)
CMA_DEVICE_REMOVAL, it calls notify_user(id)
and if that fails, the caller - cma_process_remove()
calls rdma_destroy_id(id). Two processes can
call rdma_destroy_id(), resulting in one
de-referencing kfreed id_priv.
Fix is for process B to set CMA_DESTROYING in cma_req_handler()
so that process A will return instead of doing a rdma_destroy_id().
Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
cma_connect_ib() and cma_connect_iw() leak cm_id's in failure cases.
Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
On a machine with no machzwd, loading the module prints out..
machzwd: MachZ ZF-Logic Watchdog driver initializing.
0xffff
machzwd: Watchdog using action = RESET
- the 0xffff printk is unnecessary
- 0xffff seems to be 'hardware not present'
- fix CodingStyle. (This driver could use some more work here)
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Return ENOTTY instead of ENOIOCTLCMD in user-visible ioctl() results
The watchdog drivers used to return ENOIOCTLCMD for bad ioctl() commands.
ENOIOCTLCMD should not be visible by the user, so use ENOTTY instead.
Signed-off-by: Samuel Tardieu <sam@rfc1149.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
If the driver is not configured for `no way out`,
then the open method should not automatically allow
the setting of allow_close to CLOSE_STATE_ALLOW.
The setting of allow_close nullifies the use of
the magic close via the write path. It means that
in the default state, the watchdog will shut-down
even if the magic close has not been issued.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Add io spinlocks to prevent possible race
conditions between start and stop operations
that are issued from different child processes
where the master process opened /dev/watchdog.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Duh. I screwed up editing David Howells patch in commit
3f2e05e90e, and the actual declaration for
the sigset_from_compat() function went missing. My bad.
Olaf Hering saved the day and noticed that I'm a moron.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Change remove code so that we first detach
the driver from userspace, then clean up the
clock and then clean up the memory we allocated.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Add watchdog support for Philips PNX4008 ARM board inlined.
Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Use refcounting for pci device obtaining.
Use PCI_DEVICE macro.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: Andrew Morton <akpm@osdl.org>
Convert pci_find_device to pci_get_device + pci_dev_put
in alim watchdog cards' drivers (refcounting).
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@osdl.org>
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (37 commits)
[netdrvr] hp100: encapsulate all non-module code
drivers/net/wireless/{airo,ipw2100}: fix error handling bugs
[netdrvr] phy: Fix bugs in error handling
[PATCH] spidernet: Use pci_dma_mapping_error()
[PATCH] sky2: version 1.9
[PATCH] sky2: fragmented receive for large MTU
[PATCH] sky2: use netif_tx_lock instead of LLTX
[PATCH] sky2: incremental transmit completion
[PATCH] sky2: name irq after eth for irqbalance
[PATCH] sky2: workarounds for some 88e806x chips
[PATCH] sky2: use standard pci register capabilties for error register
[PATCH] sky2: gigabit full duplex negotiation
e100, e1000, ixgb: increment version numbers
ixgb: convert to netdev_priv(netdev)
ixgb: combine more rx descriptors to improve performance
e1000: possible memory leak in e1000_set_ringparam
e1000: Janitor: Use #defined values for literals
e1000: don't strip vlan ID if 8021q claims it
e1000: rework polarity, NVM, eeprom code and fixes.
e1000: driver state fixes (race fix)
...
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6:
JFS: White space cleanup
[PATCH] JFS: return correct error when i-node allocation failed
JFS: Remove shadow variable from fs/jfs/jfs_txnmgr.c:xtLog()
* git://git.infradead.org/mtd-2.6:
[MTD] Cleanup of 'ioremap balanced with iounmap for drivers/mtd subsystem'
[MTD] fix nftl_write warning
[MTD] fix printk warning
[MTD ONENAND] Check OneNAND lock scheme & all block unlock command support
[MTD ONENAND] Remove unused MTD_ONENAND_SYNC_READ configuration
[MTD ONENAND] Fix OneNAND probe
[MTD NAND] Provide prototype for newly-exported nand_wait_ready()
[MTD] Remove #ifndef __KERNEL__ hack in <mtd/mtd-abi.h>
[MTD NAND] Allow override of page read and write functions.
[MTD NAND] Allocate chip->buffers separately to allow it to be overridden
[MTD NAND] Split nand_scan() into two parts; allow board driver to intervene
[MTD NAND] Export nand_wait_ready() for use by board drivers
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (35 commits)
Input: wistron - add support for Acer TravelMate 2424NWXCi
Input: wistron - fix setting up special buttons
Input: add KEY_BLUETOOTH and KEY_WLAN definitions
Input: add new BUS_VIRTUAL bus type
Input: add driver for stowaway serial keyboards
Input: make input_register_handler() return error codes
Input: remove cruft that was needed for transition to sysfs
Input: fix input module refcounting
Input: constify input core
Input: libps2 - rearrange exports
Input: atkbd - support Microsoft Natural Elite Pro keyboards
Input: i8042 - disable MUX mode on Toshiba Equium A110
Input: i8042 - get rid of polling timer
Input: send key up events at disconnect
Input: constify psmouse driver
Input: i8042 - add Amoi to the MUX blacklist
Input: logips2pp - add sugnature 56 (Cordless MouseMan Wheel), cleanup
Input: add driver for Touchwin serial touchscreens
Input: add driver for Touchright serial touchscreens
Input: add driver for Penmount serial touchscreens
...
Revert Andrew Morton's patch to temporarily hack around the lack of a
declaration of sigset_t in linux/compat.h to make the block-disablement
patches build on IA64. This got accidentally pushed to Linus and should
be fixed in a different manner.
Also make linux/compat.h #include asm/signal.h to gain a definition of
sigset_t so that it can externally declare sigset_from_compat().
This has been compile-tested for i386, x86_64, ia64, mips, mips64, frv, ppc and
ppc64 and run-tested on frv.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There are a few places in the kernel where the init task is signaled. The
ctrl+alt+del sequence is one them. It kills a task, usually init, using a
cached pid (cad_pid).
This patch replaces the pid_t by a struct pid to avoid pid wrap around
problem. The struct pid is initialized at boot time in init() and can be
modified through systctl with
/proc/sys/kernel/cad_pid
[ I haven't found any distro using it ? ]
It also introduces a small helper routine kill_cad_pid() which is used
where it seemed ok to use cad_pid instead of pid 1.
[akpm@osdl.org: cleanups, build fix]
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
