Commit Graph

70489 Commits

Author SHA1 Message Date
Yann Droneaud
f938612dd9 include/linux/file.h: remove get_unused_fd() macro
Macro get_unused_fd() is used to allocate a file descriptor with default
flags.  Those default flags (0) don't enable close-on-exec.

This can be seen as an unsafe default: in most case close-on-exec should
be enabled to not leak file descriptor across exec().

It would be better to have a "safer" default set of flags, eg.  O_CLOEXEC
must be used to enable close-on-exec.

Instead this patch removes get_unused_fd() so that out of tree modules
won't be affect by a runtime behavor change which might introduce other
kind of bugs: it's better to catch the change at build time, making it
easier to fix.

Removing the macro will also promote use of get_unused_fd_flags() (or
anon_inode_getfd()) with flags provided by userspace.  Or, if flags cannot
be given by userspace, with flags set to O_CLOEXEC by default.

Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:10 -08:00
Oleg Nesterov
7c8bd2322c exit: ptrace: shift "reap dead" code from exit_ptrace() to forget_original_parent()
Now that forget_original_parent() uses ->ptrace_entry for EXIT_DEAD tasks,
we can simply pass "dead_children" list to exit_ptrace() and remove
another release_task() loop.  Plus this way we do not need to drop and
reacquire tasklist_lock.

Also shift the list_empty(ptraced) check, if we want this optimization it
makes sense to eliminate the function call altogether.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Aaron Tomlin <atomlin@redhat.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
Cc: Sterling Alexander <stalexan@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Roland McGrath <roland@hack.frob.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:10 -08:00
Johannes Weiner
9edad6ea0f mm: move page->mem_cgroup bad page handling into generic code
Now that the external page_cgroup data structure and its lookup is
gone, let the generic bad_page() check for page->mem_cgroup sanity.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Tejun Heo <tj@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:09 -08:00
Johannes Weiner
5d1ea48bdd mm: page_cgroup: rename file to mm/swap_cgroup.c
Now that the external page_cgroup data structure and its lookup is gone,
the only code remaining in there is swap slot accounting.

Rename it and move the conditional compilation into mm/Makefile.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Tejun Heo <tj@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:09 -08:00
Johannes Weiner
1306a85aed mm: embed the memcg pointer directly into struct page
Memory cgroups used to have 5 per-page pointers.  To allow users to
disable that amount of overhead during runtime, those pointers were
allocated in a separate array, with a translation layer between them and
struct page.

There is now only one page pointer remaining: the memcg pointer, that
indicates which cgroup the page is associated with when charged.  The
complexity of runtime allocation and the runtime translation overhead is
no longer justified to save that *potential* 0.19% of memory.  With
CONFIG_SLUB, page->mem_cgroup actually sits in the doubleword padding
after the page->private member and doesn't even increase struct page,
and then this patch actually saves space.  Remaining users that care can
still compile their kernels without CONFIG_MEMCG.

     text    data     bss     dec     hex     filename
  8828345 1725264  983040 11536649 b00909  vmlinux.old
  8827425 1725264  966656 11519345 afc571  vmlinux.new

[mhocko@suse.cz: update Documentation/cgroups/memory.txt]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Konstantin Khlebnikov <koct9i@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:09 -08:00
Michal Hocko
e4bd6a0248 mm, memcg: fix potential undefined behaviour in page stat accounting
Since commit d7365e783e ("mm: memcontrol: fix missed end-writeback
page accounting") mem_cgroup_end_page_stat consumes locked and flags
variables directly rather than via pointers which might trigger C
undefined behavior as those variables are initialized only in the slow
path of mem_cgroup_begin_page_stat.

Although mem_cgroup_end_page_stat handles parameters correctly and
touches them only when they hold a sensible value it is caller which
loads a potentially uninitialized value which then might allow compiler
to do crazy things.

I haven't seen any warning from gcc and it seems that the current
version (4.9) doesn't exploit this type undefined behavior but Sasha has
reported the following:

  UBSan: Undefined behaviour in mm/rmap.c:1084:2
  load of value 255 is not a valid value for type '_Bool'
  CPU: 4 PID: 8304 Comm: rngd Not tainted 3.18.0-rc2-next-20141029-sasha-00039-g77ed13d-dirty #1427
  Call Trace:
    dump_stack (lib/dump_stack.c:52)
    ubsan_epilogue (lib/ubsan.c:159)
    __ubsan_handle_load_invalid_value (lib/ubsan.c:482)
    page_remove_rmap (mm/rmap.c:1084 mm/rmap.c:1096)
    unmap_page_range (./arch/x86/include/asm/atomic.h:27 include/linux/mm.h:463 mm/memory.c:1146 mm/memory.c:1258 mm/memory.c:1279 mm/memory.c:1303)
    unmap_single_vma (mm/memory.c:1348)
    unmap_vmas (mm/memory.c:1377 (discriminator 3))
    exit_mmap (mm/mmap.c:2837)
    mmput (kernel/fork.c:659)
    do_exit (./arch/x86/include/asm/thread_info.h:168 kernel/exit.c:462 kernel/exit.c:747)
    do_group_exit (include/linux/sched.h:775 kernel/exit.c:873)
    SyS_exit_group (kernel/exit.c:901)
    tracesys_phase2 (arch/x86/kernel/entry_64.S:529)

Fix this by using pointer parameters for both locked and flags and be
more robust for future compiler changes even though the current code is
implemented correctly.

Signed-off-by: Michal Hocko <mhocko@suse.cz>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:08 -08:00
Johannes Weiner
2314b42db6 mm: memcontrol: drop bogus RCU locking from mem_cgroup_same_or_subtree()
None of the mem_cgroup_same_or_subtree() callers actually require it to
take the RCU lock, either because they hold it themselves or they have css
references.  Remove it.

To make the API change clear, rename the leftover helper to
mem_cgroup_is_descendant() to match cgroup_is_descendant().

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:08 -08:00
Johannes Weiner
413918bb61 mm: memcontrol: pull the NULL check from __mem_cgroup_same_or_subtree()
The NULL in mm_match_cgroup() comes from a possibly exiting mm->owner.  It
makes a lot more sense to check where it's looked up, rather than check
for it in __mem_cgroup_same_or_subtree() where it's unexpected.

No other callsite passes NULL to __mem_cgroup_same_or_subtree().

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:08 -08:00
Vladimir Davydov
b047501cd9 memcg: use generic slab iterators for showing slabinfo
Let's use generic slab_start/next/stop for showing memcg caches info.  In
contrast to the current implementation, this will work even if all memcg
caches' info doesn't fit into a seq buffer (a page), plus it simply looks
neater.

Actually, the main reason I do this isn't mere cleanup.  I'm going to zap
the memcg_slab_caches list, because I find it useless provided we have the
slab_caches list, and this patch is a step in this direction.

It should be noted that before this patch an attempt to read
memory.kmem.slabinfo of a cgroup that doesn't have kmem limit set resulted
in -EIO, while after this patch it will silently show nothing except the
header, but I don't think it will frustrate anyone.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:07 -08:00
Sasha Levin
97ad2be1da mm, hugetlb: correct bit shift in hstate_sizelog()
hstate_sizelog() would shift left an int rather than long, triggering
undefined behaviour and passing an incorrect value when the requested
page size was more than 4GB, thus breaking >4GB pages.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Andrey Ryabinin <a.ryabinin@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:07 -08:00
Johannes Weiner
2983331575 mm: memcontrol: remove unnecessary PCG_USED pc->mem_cgroup valid flag
pc->mem_cgroup had to be left intact after uncharge for the final LRU
removal, and !PCG_USED indicated whether the page was uncharged.  But
since commit 0a31bc97c8 ("mm: memcontrol: rewrite uncharge API") pages
are uncharged after the final LRU removal.  Uncharge can simply clear
the pointer and the PCG_USED/PageCgroupUsed sites can test that instead.

Because this is the last page_cgroup flag, this patch reduces the memcg
per-page overhead to a single pointer.

[akpm@linux-foundation.org: remove unneeded initialization of `memcg', per Michal]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:07 -08:00
Johannes Weiner
f4aaa8b43d mm: memcontrol: remove unnecessary PCG_MEM memory charge flag
PCG_MEM is a remnant from an earlier version of 0a31bc97c8 ("mm:
memcontrol: rewrite uncharge API"), used to tell whether migration cleared
a charge while leaving pc->mem_cgroup valid and PCG_USED set.  But in the
final version, mem_cgroup_migrate() directly uncharges the source page,
rendering this distinction unnecessary.  Remove it.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:07 -08:00
Johannes Weiner
18eca2e636 mm: memcontrol: remove unnecessary PCG_MEMSW memory+swap charge flag
Now that mem_cgroup_swapout() fully uncharges the page, every page that is
still in use when reaching mem_cgroup_uncharge() is known to carry both
the memory and the memory+swap charge.  Simplify the uncharge path and
remove the PCG_MEMSW page flag accordingly.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:07 -08:00
Vlastimil Babka
97d47a65be mm, compaction: simplify deferred compaction
Since commit 53853e2d2b ("mm, compaction: defer each zone individually
instead of preferred zone"), compaction is deferred for each zone where
sync direct compaction fails, and reset where it succeeds.  However, it
was observed that for DMA zone compaction often appeared to succeed
while subsequent allocation attempt would not, due to different outcome
of watermark check.

In order to properly defer compaction in this zone, the candidate zone
has to be passed back to __alloc_pages_direct_compact() and compaction
deferred in the zone after the allocation attempt fails.

The large source of mismatch between watermark check in compaction and
allocation was the lack of alloc_flags and classzone_idx values in
compaction, which has been fixed in the previous patch.  So with this
problem fixed, we can simplify the code by removing the candidate_zone
parameter and deferring in __alloc_pages_direct_compact().

After this patch, the compaction activity during stress-highalloc
benchmark is still somewhat increased, but it's negligible compared to the
increase that occurred without the better watermark checking.  This
suggests that it is still possible to apparently succeed in compaction but
fail to allocate, possibly due to parallel allocation activity.

[akpm@linux-foundation.org: fix build]
Suggested-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:06 -08:00
Vlastimil Babka
ebff398017 mm, compaction: pass classzone_idx and alloc_flags to watermark checking
Compaction relies on zone watermark checks for decisions such as if it's
worth to start compacting in compaction_suitable() or whether compaction
should stop in compact_finished().  The watermark checks take
classzone_idx and alloc_flags parameters, which are related to the memory
allocation request.  But from the context of compaction they are currently
passed as 0, including the direct compaction which is invoked to satisfy
the allocation request, and could therefore know the proper values.

The lack of proper values can lead to mismatch between decisions taken
during compaction and decisions related to the allocation request.  Lack
of proper classzone_idx value means that lowmem_reserve is not taken into
account.  This has manifested (during recent changes to deferred
compaction) when DMA zone was used as fallback for preferred Normal zone.
compaction_suitable() without proper classzone_idx would think that the
watermarks are already satisfied, but watermark check in
get_page_from_freelist() would fail.  Because of this problem, deferring
compaction has extra complexity that can be removed in the following
patch.

The issue (not confirmed in practice) with missing alloc_flags is opposite
in nature.  For allocations that include ALLOC_HIGH, ALLOC_HIGHER or
ALLOC_CMA in alloc_flags (the last includes all MOVABLE allocations on
CMA-enabled systems) the watermark checking in compaction with 0 passed
will be stricter than in get_page_from_freelist().  In these cases
compaction might be running for a longer time than is really needed.

Another issue compaction_suitable() is that the check for "does the zone
need compaction at all?" comes only after the check "does the zone have
enough free free pages to succeed compaction".  The latter considers extra
pages for migration and can therefore in some situations fail and return
COMPACT_SKIPPED, although the high-order allocation would succeed and we
should return COMPACT_PARTIAL.

This patch fixes these problems by adding alloc_flags and classzone_idx to
struct compact_control and related functions involved in direct compaction
and watermark checking.  Where possible, all other callers of
compaction_suitable() pass proper values where those are known.  This is
currently limited to classzone_idx, which is sometimes known in kswapd
context.  However, the direct reclaim callers should_continue_reclaim()
and compaction_ready() do not currently know the proper values, so the
coordination between reclaim and compaction may still not be as accurate
as it could.  This can be fixed later, if it's shown to be an issue.

Additionaly the checks in compact_suitable() are reordered to address the
second issue described above.

The effect of this patch should be slightly better high-order allocation
success rates and/or less compaction overhead, depending on the type of
allocations and presence of CMA.  It allows simplifying deferred
compaction code in a followup patch.

When testing with stress-highalloc, there was some slight improvement
(which might be just due to variance) in success rates of non-THP-like
allocations.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Christoph Lameter <cl@linux.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:06 -08:00
Vlastimil Babka
93481ff0e5 mm: introduce single zone pcplists drain
The functions for draining per-cpu pages back to buddy allocators
currently always operate on all zones.  There are however several cases
where the drain is only needed in the context of a single zone, and
spilling other pcplists is a waste of time both due to the extra
spilling and later refilling.

This patch introduces new zone pointer parameter to drain_all_pages()
and changes the dummy parameter of drain_local_pages() to be also a zone
pointer.  When NULL is passed, the functions operate on all zones as
usual.  Passing a specific zone pointer reduces the work to the single
zone.

All callers are updated to pass the NULL pointer in this patch.
Conversion to single zone (where appropriate) is done in further
patches.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:05 -08:00
Johannes Weiner
64f2199389 mm: memcontrol: remove obsolete kmemcg pinning tricks
As charges now pin the css explicitely, there is no more need for kmemcg
to acquire a proxy reference for outstanding pages during offlining, or
maintain state to identify such "dead" groups.

This was the last user of the uncharge functions' return values, so remove
them as well.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:05 -08:00
Johannes Weiner
e8ea14cc6e mm: memcontrol: take a css reference for each charged page
Charges currently pin the css indirectly by playing tricks during
css_offline(): user pages stall the offlining process until all of them
have been reparented, whereas kmemcg acquires a keep-alive reference if
outstanding kernel pages are detected at that point.

In preparation for removing all this complexity, make the pinning explicit
and acquire a css references for every charged page.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:05 -08:00
Johannes Weiner
5b1efc027c kernel: res_counter: remove the unused API
All memory accounting and limiting has been switched over to the
lockless page counters.  Bye, res_counter!

[akpm@linux-foundation.org: update Documentation/cgroups/memory.txt]
[mhocko@suse.cz: ditch the last remainings of res_counter]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:04 -08:00
Johannes Weiner
71f87bee38 mm: hugetlb_cgroup: convert to lockless page counters
Abandon the spinlock-protected byte counters in favor of the unlocked
page counters in the hugetlb controller as well.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:04 -08:00
Johannes Weiner
3e32cb2e0a mm: memcontrol: lockless page counters
Memory is internally accounted in bytes, using spinlock-protected 64-bit
counters, even though the smallest accounting delta is a page.  The
counter interface is also convoluted and does too many things.

Introduce a new lockless word-sized page counter API, then change all
memory accounting over to it.  The translation from and to bytes then only
happens when interfacing with userspace.

The removed locking overhead is noticable when scaling beyond the per-cpu
charge caches - on a 4-socket machine with 144-threads, the following test
shows the performance differences of 288 memcgs concurrently running a
page fault benchmark:

vanilla:

   18631648.500498      task-clock (msec)         #  140.643 CPUs utilized            ( +-  0.33% )
         1,380,638      context-switches          #    0.074 K/sec                    ( +-  0.75% )
            24,390      cpu-migrations            #    0.001 K/sec                    ( +-  8.44% )
     1,843,305,768      page-faults               #    0.099 M/sec                    ( +-  0.00% )
50,134,994,088,218      cycles                    #    2.691 GHz                      ( +-  0.33% )
   <not supported>      stalled-cycles-frontend
   <not supported>      stalled-cycles-backend
 8,049,712,224,651      instructions              #    0.16  insns per cycle          ( +-  0.04% )
 1,586,970,584,979      branches                  #   85.176 M/sec                    ( +-  0.05% )
     1,724,989,949      branch-misses             #    0.11% of all branches          ( +-  0.48% )

     132.474343877 seconds time elapsed                                          ( +-  0.21% )

lockless:

   12195979.037525      task-clock (msec)         #  133.480 CPUs utilized            ( +-  0.18% )
           832,850      context-switches          #    0.068 K/sec                    ( +-  0.54% )
            15,624      cpu-migrations            #    0.001 K/sec                    ( +- 10.17% )
     1,843,304,774      page-faults               #    0.151 M/sec                    ( +-  0.00% )
32,811,216,801,141      cycles                    #    2.690 GHz                      ( +-  0.18% )
   <not supported>      stalled-cycles-frontend
   <not supported>      stalled-cycles-backend
 9,999,265,091,727      instructions              #    0.30  insns per cycle          ( +-  0.10% )
 2,076,759,325,203      branches                  #  170.282 M/sec                    ( +-  0.12% )
     1,656,917,214      branch-misses             #    0.08% of all branches          ( +-  0.55% )

      91.369330729 seconds time elapsed                                          ( +-  0.45% )

On top of improved scalability, this also gets rid of the icky long long
types in the very heart of memcg, which is great for 32 bit and also makes
the code a lot more readable.

Notable differences between the old and new API:

- res_counter_charge() and res_counter_charge_nofail() become
  page_counter_try_charge() and page_counter_charge() resp. to match
  the more common kernel naming scheme of try_do()/do()

- res_counter_uncharge_until() is only ever used to cancel a local
  counter and never to uncharge bigger segments of a hierarchy, so
  it's replaced by the simpler page_counter_cancel()

- res_counter_set_limit() is replaced by page_counter_limit(), which
  expects its callers to serialize against themselves

- res_counter_memparse_write_strategy() is replaced by
  page_counter_limit(), which rounds down to the nearest page size -
  rather than up.  This is more reasonable for explicitely requested
  hard upper limits.

- to keep charging light-weight, page_counter_try_charge() charges
  speculatively, only to roll back if the result exceeds the limit.
  Because of this, a failing bigger charge can temporarily lock out
  smaller charges that would otherwise succeed.  The error is bounded
  to the difference between the smallest and the biggest possible
  charge size, so for memcg, this means that a failing THP charge can
  send base page charges into reclaim upto 2MB (4MB) before the limit
  would have been reached.  This should be acceptable.

[akpm@linux-foundation.org: add includes for WARN_ON_ONCE and memparse]
[akpm@linux-foundation.org: add includes for WARN_ON_ONCE, memparse, strncmp, and PAGE_SIZE]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:04 -08:00
Linus Torvalds
d82012695e Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more 2038 timer work from Thomas Gleixner:
 "Two more patches for the ongoing 2038 work:

   - New accessors to clock MONOTONIC and REALTIME seconds

  This is a seperate branch as Arnd has follow up work depending on
  this"

* 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timekeeping: Provide y2038 safe accessor to the seconds portion of CLOCK_REALTIME
  timekeeping: Provide fast accessor to the seconds part of CLOCK_MONOTONIC
2014-12-10 10:13:28 -08:00
Linus Torvalds
3eb5b893eb Merge branch 'x86-mpx-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 MPX support from Thomas Gleixner:
 "This enables support for x86 MPX.

  MPX is a new debug feature for bound checking in user space.  It
  requires kernel support to handle the bound tables and decode the
  bound violating instruction in the trap handler"

* 'x86-mpx-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  asm-generic: Remove asm-generic arch_bprm_mm_init()
  mm: Make arch_unmap()/bprm_mm_init() available to all architectures
  x86: Cleanly separate use of asm-generic/mm_hooks.h
  x86 mpx: Change return type of get_reg_offset()
  fs: Do not include mpx.h in exec.c
  x86, mpx: Add documentation on Intel MPX
  x86, mpx: Cleanup unused bound tables
  x86, mpx: On-demand kernel allocation of bounds tables
  x86, mpx: Decode MPX instruction to get bound violation information
  x86, mpx: Add MPX-specific mmap interface
  x86, mpx: Introduce VM_MPX to indicate that a VMA is MPX specific
  x86, mpx: Add MPX to disabled features
  ia64: Sync struct siginfo with general version
  mips: Sync struct siginfo with general version
  mpx: Extend siginfo structure to include bound violation information
  x86, mpx: Rename cfg_reg_u and status_reg
  x86: mpx: Give bndX registers actual names
  x86: Remove arbitrary instruction size limit in instruction decoder
2014-12-10 09:34:43 -08:00
Linus Torvalds
9e66645d72 Merge branch 'irq-irqdomain-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq domain updates from Thomas Gleixner:
 "The real interesting irq updates:

   - Support for hierarchical irq domains:

     For complex interrupt routing scenarios where more than one
     interrupt related chip is involved we had no proper representation
     in the generic interrupt infrastructure so far.  That made people
     implement rather ugly constructs in their nested irq chip
     implementations.  The main offenders are x86 and arm/gic.

     To distangle that mess we have now hierarchical irqdomains which
     seperate the various interrupt chips and connect them via the
     hierarchical domains.  That keeps the domain specific details
     internal to the particular hierarchy level and removes the
     criss/cross referencing of chip internals.  The resulting hierarchy
     for a complex x86 system will look like this:

        vector          mapped: 74
          msi-0         mapped: 2
          dmar-ir-1     mapped: 69
            ioapic-1    mapped: 4
            ioapic-0    mapped: 20
            pci-msi-2   mapped: 45
          dmar-ir-0     mapped: 3
            ioapic-2    mapped: 1
            pci-msi-1   mapped: 2
          htirq         mapped: 0

     Neither ioapic nor pci-msi know about the dmar interrupt remapping
     between themself and the vector domain.  If interrupt remapping is
     disabled ioapic and pci-msi become direct childs of the vector
     domain.

     In hindsight we should have done that years ago, but in hindsight
     we always know better :)

   - Support for generic MSI interrupt domain handling

     We have more and more non PCI related MSI interrupts, so providing
     a generic infrastructure for this is better than having all
     affected architectures implementing their own private hacks.

   - Support for PCI-MSI interrupt domain handling, based on the generic
     MSI support.

     This part carries the pci/msi branch from Bjorn Helgaas pci tree to
     avoid a massive conflict.  The PCI/MSI parts are acked by Bjorn.

  I have two more branches on top of this.  The full conversion of x86
  to hierarchical domains and a partial conversion of arm/gic"

* 'irq-irqdomain-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits)
  genirq: Move irq_chip_write_msi_msg() helper to core
  PCI/MSI: Allow an msi_controller to be associated to an irq domain
  PCI/MSI: Provide mechanism to alloc/free MSI/MSIX interrupt from irqdomain
  PCI/MSI: Enhance core to support hierarchy irqdomain
  PCI/MSI: Move cached entry functions to irq core
  genirq: Provide default callbacks for msi_domain_ops
  genirq: Introduce msi_domain_alloc/free_irqs()
  asm-generic: Add msi.h
  genirq: Add generic msi irq domain support
  genirq: Introduce callback irq_chip.irq_write_msi_msg
  genirq: Work around __irq_set_handler vs stacked domains ordering issues
  irqdomain: Introduce helper function irq_domain_add_hierarchy()
  irqdomain: Implement a method to automatically call parent domains alloc/free
  genirq: Introduce helper irq_domain_set_info() to reduce duplicated code
  genirq: Split out flow handler typedefs into seperate header file
  genirq: Add IRQ_SET_MASK_OK_DONE to support stacked irqchip
  genirq: Introduce irq_chip.irq_compose_msi_msg() to support stacked irqchip
  genirq: Add more helper functions to support stacked irq_chip
  genirq: Introduce helper functions to support stacked irq_chip
  irqdomain: Do irq_find_mapping and set_type for hierarchy irqdomain in case OF
  ...
2014-12-10 09:01:01 -08:00
Linus Torvalds
ecb50f0afd Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq core updates from Thomas Gleixner:
 "This is the first (boring) part of irq updates:

   - support for big endian I/O accessors in the generic irq chip

   - cleanup of brcmstb/bcm7120 drivers so they can be reused for non
     ARM SoCs

   - the usual pile of fixes and updates for the various ARM irq chips"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
  irqchip: dw-apb-ictl: Add PM support
  irqchip: dw-apb-ictl: Enable IRQ_GC_MASK_CACHE_PER_TYPE
  irqchip: dw-apb-ictl: Always use use {readl|writel}_relaxed
  ARM: orion: convert the irq_reg_{readl,writel} calls to the new API
  irqchip: atmel-aic: Add missing entry for rm9200 irq fixups
  irqchip: atmel-aic: Rename at91sam9_aic_irq_fixup for naming consistency
  irqchip: atmel-aic: Add specific irq fixup function for sam9g45 and sam9rl
  irqchip: atmel-aic: Add irq fixups for at91sam926x SoCs
  irqchip: atmel-aic: Add irq fixup for RTT block
  irqchip: brcmstb-l2: Convert driver to use irq_reg_{readl,writel}
  irqchip: bcm7120-l2: Convert driver to use irq_reg_{readl,writel}
  irqchip: bcm7120-l2: Decouple driver from brcmstb-l2
  irqchip: bcm7120-l2: Extend driver to support 64+ bit controllers
  irqchip: bcm7120-l2: Use gc->mask_cache to simplify suspend/resume functions
  irqchip: bcm7120-l2: Fix missing nibble in gc->unused mask
  irqchip: bcm7120-l2: Make sure all register accesses use base+offset
  irqchip: bcm7120-l2, brcmstb-l2: Remove ARM Kconfig dependency
  irqchip: bcm7120-l2: Eliminate bad IRQ check
  irqchip: brcmstb-l2: Eliminate dependency on ARM code
  genirq: Generic chip: Add big endian I/O accessors
  ...
2014-12-10 08:38:57 -08:00
Linus Torvalds
a157508c97 Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer core updates from Thomas Gleixner:
 "The time(r) departement provides:

   - more infrastructure work on the year 2038 issue

   - a few fixes in the Armada SoC timers

   - the usual pile of fixlets and improvements"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource: armada-370-xp: Use the reference clock on A375 SoC
  watchdog: orion: Use the reference clock on Armada 375 SoC
  clocksource: armada-370-xp: Add missing clock enable
  time: Fix sign bug in NTP mult overflow warning
  time: Remove timekeeping_inject_sleeptime()
  rtc: Update suspend/resume timing to use 64bit time
  rtc/lib: Provide y2038 safe rtc_tm_to_time()/rtc_time_to_tm() replacement
  time: Fixup comments to reflect usage of timespec64
  time: Expose get_monotonic_coarse64() for in-kernel uses
  time: Expose getrawmonotonic64 for in-kernel uses
  time: Provide y2038 safe mktime() replacement
  time: Provide y2038 safe timekeeping_inject_sleeptime() replacement
  time: Provide y2038 safe do_settimeofday() replacement
  time: Complete NTP adjustment threshold judging conditions
  time: Avoid possible NTP adjustment mult overflow.
  time: Rename udelay_test.c to test_udelay.c
  clocksource: sirf: Remove hard-coded clock rate
2014-12-10 08:18:32 -08:00
Linus Torvalds
86c6a2fddf Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
 "The main changes in this cycle are:

   - 'Nested Sleep Debugging', activated when CONFIG_DEBUG_ATOMIC_SLEEP=y.

     This instruments might_sleep() checks to catch places that nest
     blocking primitives - such as mutex usage in a wait loop.  Such
     bugs can result in hard to debug races/hangs.

     Another category of invalid nesting that this facility will detect
     is the calling of blocking functions from within schedule() ->
     sched_submit_work() -> blk_schedule_flush_plug().

     There's some potential for false positives (if secondary blocking
     primitives themselves are not ready yet for this facility), but the
     kernel will warn once about such bugs per bootup, so the warning
     isn't much of a nuisance.

     This feature comes with a number of fixes, for problems uncovered
     with it, so no messages are expected normally.

   - Another round of sched/numa optimizations and refinements, for
     CONFIG_NUMA_BALANCING=y.

   - Another round of sched/dl fixes and refinements.

  Plus various smaller fixes and cleanups"

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
  sched: Add missing rcu protection to wake_up_all_idle_cpus
  sched/deadline: Introduce start_hrtick_dl() for !CONFIG_SCHED_HRTICK
  sched/numa: Init numa balancing fields of init_task
  sched/deadline: Remove unnecessary definitions in cpudeadline.h
  sched/cpupri: Remove unnecessary definitions in cpupri.h
  sched/deadline: Fix rq->dl.pushable_tasks bug in push_dl_task()
  sched/fair: Fix stale overloaded status in the busiest group finding logic
  sched: Move p->nr_cpus_allowed check to select_task_rq()
  sched/completion: Document when to use wait_for_completion_io_*()
  sched: Update comments about CLONE_NEWUTS and CLONE_NEWIPC
  sched/fair: Kill task_struct::numa_entry and numa_group::task_list
  sched: Refactor task_struct to use numa_faults instead of numa_* pointers
  sched/deadline: Don't check CONFIG_SMP in switched_from_dl()
  sched/deadline: Reschedule from switched_from_dl() after a successful pull
  sched/deadline: Push task away if the deadline is equal to curr during wakeup
  sched/deadline: Add deadline rq status print
  sched/deadline: Fix artificial overrun introduced by yield_task_dl()
  sched/rt: Clean up check_preempt_equal_prio()
  sched/core: Use dl_bw_of() under rcu_read_lock_sched()
  sched: Check if we got a shallowest_idle_cpu before searching for least_loaded_cpu
  ...
2014-12-09 21:21:34 -08:00
Linus Torvalds
5706ffd045 Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf events update from Ingo Molnar:
 "On the kernel side there's few changes, the one that stands out is
  PEBS machine state sampling support on x86, by Stephane Eranian.

  On the tooling side:

  User visible tooling changes:

   - Don't open the DWARF info multiple times, keeping instead a dwfl
     handle in struct dso, greatly speeding up 'perf report' on powerpc.
     (Sukadev Bhattiprolu)

   - Introduce PARSE_OPT_DISABLED option flag and use it to avoid
     showing undersired options in tools that provides frontends to
     'perf record', like sched, kvm, etc (Namhyung Kim)

   - Fallback to kallsyms when using the minimal 'ELF' loader (Arnaldo
     Carvalho de Melo)

   - Fix annotation with kcore (Adrian Hunter)

   - Support source line numbers in annotate using a hotkey (Andi Kleen)

   - Callchain improvements including:
     * Enable printing the srcline in the history
     * Make get_srcline fall back to sym+offset (Andi Kleen)

   - TUI hist_entry browser fixes, including showing missing overhead
     value for first level callchain.  Detected comparing the output of
     --stdio/--gui (that matched) with --tui, that had this problem.
     (Namhyung Kim)

   - Support handling complete branch stacks as histograms (Andi Kleen)

  Tooling infrastructure changes:

   - Prep work for supporting per-pkg and snapshot counters in 'perf
     stat' (Jiri Olsa)

   - 'perf stat' refactorings, moving stuff from it to evsel.c to use in
     per-pkg/snapshot format changes (Jiri Olsa)

   - Add per-pkg format file parsing (Matt Fleming)

   - Clean up libelf feature support code (Namhyung Kim)

   - Add gzip decompression support for kernel modules (Namhyung Kim)

   - More prep patches for Intel PT, including a a thread stack and more
     stuff made available via the database export mechanism (Adrian
     Hunter)

   - More Intel PT work, including a facility to export sample data
     (comms, threads, symbol names, etc) in a database friendly way,
     with an script to use this to create a postgresql database.
     (Adrian Hunter)

   - Make sure that thread->mg->machine points to the machine where the
     thread exists (it was being set only for the kmaps kernel modules
     case, do it as well for the mmaps) and use it to shorten function
     signatures (Arnaldo Carvalho de Melo)

  ... and lots of other fixes and smaller improvements"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (91 commits)
  perf report: In branch stack mode use address history sorting
  perf report: Add --branch-history option
  perf callchain: Support handling complete branch stacks as histograms
  perf stat: Add support for snapshot counters
  perf stat: Add support for per-pkg counters
  perf tools: Remove perf_evsel__read interface
  perf stat: Use read_counter in read_counter_aggr
  perf stat: Make read_counter work over the thread dimension
  perf stat: Use perf_evsel__read_cb in read_counter
  perf tools: Add snapshot format file parsing
  perf tools: Add per-pkg format file parsing
  perf evsel: Introduce perf_evsel__read_cb function
  perf evsel: Introduce perf_counts_values__scale function
  perf evsel: Introduce perf_evsel__compute_deltas function
  perf tools: Allow to force redirect pr_debug to stderr.
  perf tools: Fix segfault due to invalid kernel dso access
  perf callchain: Make get_srcline fall back to sym+offset
  perf symbols: Move bfd_demangle stubbing to its only user
  perf callchain: Enable printing the srcline in the history
  perf tools: Collapse first level callchain entry if it has sibling
  ...
2014-12-09 20:55:37 -08:00
Linus Torvalds
c30110608c Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar:
 "These are the main changes in this cycle:

    - Streamline RCU's use of per-CPU variables, shifting from "cpu"
      arguments to functions to "this_"-style per-CPU variable
      accessors.

    - signal-handling RCU updates.

    - real-time updates.

    - torture-test updates.

    - miscellaneous fixes.

    - documentation updates"

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
  rcu: Fix FIXME in rcu_tasks_kthread()
  rcu: More info about potential deadlocks with rcu_read_unlock()
  rcu: Optimize cond_resched_rcu_qs()
  rcu: Add sparse check for RCU_INIT_POINTER()
  documentation: memory-barriers.txt: Correct example for reorderings
  documentation: Add atomic_long_t to atomic_ops.txt
  documentation: Additional restriction for control dependencies
  documentation: Document RCU self test boot params
  rcutorture: Fix rcu_torture_cbflood() memory leak
  rcutorture: Remove obsolete kversion param in kvm.sh
  rcutorture: Remove stale test configurations
  rcutorture: Enable RCU self test in configs
  rcutorture: Add early boot self tests
  torture: Run Linux-kernel binary out of results directory
  cpu: Avoid puts_pending overflow
  rcu: Remove "cpu" argument to rcu_cleanup_after_idle()
  rcu: Remove "cpu" argument to rcu_prepare_for_idle()
  rcu: Remove "cpu" argument to rcu_needs_cpu()
  rcu: Remove "cpu" argument to rcu_note_context_switch()
  rcu: Remove "cpu" argument to rcu_preempt_check_callbacks()
  ...
2014-12-09 20:23:19 -08:00
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
fe78c54b47 ARM: SoC/OMAP GPMC driver cleanup and move for 3.19
The GPMC driver has traditionally been considered a part of the
 OMAP platform code and tightly interweaved with some of the boards.
 
 With this cleanup, it has finally come to the point where it makes
 sense to move it out of arch/arm into drivers/memory, where we already
 have other drivers for similar hardware. The cleanups are still
 ongoing, with the goal of eventually having a standalone driver
 that does not require an interface to architecture code.
 
 This is a separate branch because of dependencies on multiple other
 branches, and to keep the drivers changes separate from the normal
 cleanups.
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Merge tag 'omap-gpmc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC/OMAP GPMC driver cleanup and move from Arnd Bergmann:
 "The GPMC driver has traditionally been considered a part of the OMAP
  platform code and tightly interweaved with some of the boards.

  With this cleanup, it has finally come to the point where it makes
  sense to move it out of arch/arm into drivers/memory, where we already
  have other drivers for similar hardware.  The cleanups are still
  ongoing, with the goal of eventually having a standalone driver that
  does not require an interface to architecture code.

  This is a separate branch because of dependencies on multiple other
  branches, and to keep the drivers changes separate from the normal
  cleanups"

* tag 'omap-gpmc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  memory: gpmc: Move omap gpmc code to live under drivers
  ARM: OMAP2+: Move GPMC initcall to devices.c
  ARM: OMAP2+: Prepare to move GPMC to drivers by platform data header
  ARM: OMAP2+: Remove unnecesary include in GPMC driver
  ARM: OMAP2+: Drop board file for 3430sdp
  ARM: OMAP2+: Drop board file for ti8168evm
  ARM: OMAP2+: Drop legacy code for gpmc-smc91x.c
  ARM: OMAP2+: Require proper GPMC timings for devices
  ARM: OMAP2+: Show bootloader GPMC timings to allow configuring the .dts file
  ARM: OMAP2+: Fix support for multiple devices on a GPMC chip select
  ARM: OMAP2+: gpmc: Sanity check GPMC fck on probe
  ARM: OMAP2+: gpmc: Keep Chip Select disabled while configuring it
  ARM: OMAP2+: gpmc: Always enable A26-A11 for non NAND devices
  ARM: OMAP2+: gpmc: Error out if timings fail in gpmc_probe_generic_child()
  ARM: OMAP2+: gpmc: Print error message in set_gpmc_timing_reg()
2014-12-09 16:57:56 -08:00
Linus Torvalds
6da314122d ARM: SoC DT updates for 3.19
The DT branch adds a lot of new stuff for additional SoC and board
 support. The branch is the largest one and contains 513 out of the
 total 972 non-merge arm-soc changesets for 3.19.
 
 Most of the changes are about enabling additional on-chip devices for
 existing machines, but there are also an unusual number of new SoC
 types being added this time:
 
 * AMLogic Meson8
 * ARM Realview in DT mode
 * Allwinner A80
 * Broadcom BCM47081
 * Broadcom Cygnus
 * Freescale LS1021A
 * Freescale Vybrid 500 series
 * Mediatek MT6592, MT8127, MT8135
 * STMicroelectronics STiH410
 * Samsung Exynos4415
 
 The level of support for the above differs widely, some are just
 stubs with nothing more than CPU, memory and a UART, but others
 are fairly complete. As usual, these get extended over time.
 
 There are also many new boards getting added, this is the
 list of model strings that are showing up in new dts files:
 
 * ARM RealView PB1176
 * Altera SOCFPGA Arria 10
 * Asus RT-N18U (BCM47081)
 * Buffalo WZR-1750DHP (BCM4708)
 * Buffalo WZR-600DHP2 (BCM47081)
 * Cygnus Enterprise Phone (BCM911360_ENTPHN)
 * D-Link DIR-665
 * Google Spring
 * IGEP COM MODULE Rev. G (TI OMAP AM/DM37x)
 * IGEPv2 Rev. F (TI OMAP AM/DM37x)
 * LS1021A QDS Board
 * LS1021A TWR Board
 * LeMaker Banana Pi
 * MarsBoard RK3066
 * MediaTek MT8127 Moose Board
 * MediaTek MT8135 evaluation board
 * Mele M3
 * Merrii A80 Optimus Board
 * Netgear R6300 V2 (BCM4708)
 * Nomadik STN8815NHK
 * NovaTech OrionLXm
 * Olimex A20-OLinuXino-LIME2
 * Raspberry Pi Model B+
 * STiH410 B2120
 * Samsung Monk board
 * Samsung Rinato board
 * Synology DS213j
 * Synology DS414
 * TBS2910 Matrix ARM mini PC
 * TI AM5728 BeagleBoard-X15
 * Toradex Colibri VF50 on Colibri Evaluation Board
 * Zynq ZYBO Development Board
 
 Other notable changes include:
 
 * exynos: cleanup of existing dts files
 * mvebu: improved pinctrl support for Armada 370/XP
 * nomadik: restructuring dts files
 * omap: added CAN bus support
 * shmobile: added clock support for some SoCs
 * shmobile: added sound support for some SoCs
 * sirf: reset controller support
 * sunxi: continuing the relicensing under dual GPL/MIT
 * sunxi: lots of new on-chip device support
 * sunxi: working simplefb support (long awaited)
 * various: provide stdout-path property for earlycon
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Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC DT updates from Arnd Bergmann:
 "The DT branch adds a lot of new stuff for additional SoC and board
  support.  The branch is the largest one and contains 513 out of the
  total 972 non-merge arm-soc changesets for 3.19.

  Most of the changes are about enabling additional on-chip devices for
  existing machines, but there are also an unusual number of new SoC
  types being added this time:

   - AMLogic Meson8
   - ARM Realview in DT mode
   - Allwinner A80
   - Broadcom BCM47081
   - Broadcom Cygnus
   - Freescale LS1021A
   - Freescale Vybrid 500 series
   - Mediatek MT6592, MT8127, MT8135
   - STMicroelectronics STiH410
   - Samsung Exynos4415

  The level of support for the above differs widely, some are just stubs
  with nothing more than CPU, memory and a UART, but others are fairly
  complete.  As usual, these get extended over time.

  There are also many new boards getting added, this is the list of
  model strings that are showing up in new dts files:

   - ARM RealView PB1176
   - Altera SOCFPGA Arria 10
   - Asus RT-N18U (BCM47081)
   - Buffalo WZR-1750DHP (BCM4708)
   - Buffalo WZR-600DHP2 (BCM47081)
   - Cygnus Enterprise Phone (BCM911360_ENTPHN)
   - D-Link DIR-665
   - Google Spring
   - IGEP COM MODULE Rev. G (TI OMAP AM/DM37x)
   - IGEPv2 Rev. F (TI OMAP AM/DM37x)
   - LS1021A QDS Board
   - LS1021A TWR Board
   - LeMaker Banana Pi
   - MarsBoard RK3066
   - MediaTek MT8127 Moose Board
   - MediaTek MT8135 evaluation board
   - Mele M3
   - Merrii A80 Optimus Board
   - Netgear R6300 V2 (BCM4708)
   - Nomadik STN8815NHK
   - NovaTech OrionLXm
   - Olimex A20-OLinuXino-LIME2
   - Raspberry Pi Model B+
   - STiH410 B2120
   - Samsung Monk board
   - Samsung Rinato board
   - Synology DS213j
   - Synology DS414
   - TBS2910 Matrix ARM mini PC
   - TI AM5728 BeagleBoard-X15
   - Toradex Colibri VF50 on Colibri Evaluation Board
   - Zynq ZYBO Development Board

  Other notable changes include:

   - exynos: cleanup of existing dts files
   - mvebu: improved pinctrl support for Armada 370/XP
   - nomadik: restructuring dts files
   - omap: added CAN bus support
   - shmobile: added clock support for some SoCs
   - shmobile: added sound support for some SoCs
   - sirf: reset controller support
   - sunxi: continuing the relicensing under dual GPL/MIT
   - sunxi: lots of new on-chip device support
   - sunxi: working simplefb support (long awaited)
   - various: provide stdout-path property for earlycon"

* tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (510 commits)
  ARM: dts: rk3288: add arm,cpu-registers-not-fw-configured
  Revert "ARM: dts: rockchip: temporarily disable smp on rk3288"
  ARM: BCM5301X: Add DT for Buffalo WZR-600DHP2
  ARM: BCM5301X: Add DT for Asus RT-N18U
  ARM: BCM5301X: Add DT for Buffalo WZR-1750DHP
  ARM: BCM5301X: Add DT for Netgear R6300 V2
  ARM: BCM5301X: Add buttons for Netgear R6250
  ARM: dts: rockchip: Add input voltage supply regulators in pmic for Marsboard
  ARM: BCM5301X: Add IRQs to Broadcom's bus-axi in DTS file
  arm: dts: zynq: Add Digilent ZYBO board
  arm: dts: zynq: Move crystal freq. to board level
  doc: dt: vendor-prefixes: Add Digilent Inc
  Documentation: devicetree: Fix Xilinx VDMA specification
  ARM: dts: rockchip: set FIFO size for SDMMC, SDIO and EMMC on rk3066 and rk3188
  ARM: dts: rockchip: add label property for leds on Radxa Rock
  ARM: BCM5301X: Add LEDs for Netgear R6250 V1
  ARM: BCM5301X: Add Broadcom's bus-axi to the DTS file
  ARM: dts: add sysreg phandle to i2c device nodes for exynos
  ARM: dts: Remove unused bootargs from exynos3250-rinato
  ARM: dts: add board dts file for Exynos3250-based Monk board
  ...
2014-12-09 14:57:37 -08:00
Linus Torvalds
3a647c1d7a ARM: SoC driver updates for 3.19
These are changes for drivers that are intimately tied to some SoC
 and for some reason could not get merged through the respective
 subsystem maintainer tree.
 
 The largest single change here this time around is the Tegra
 iommu/memory controller driver, which gets updated to the new
 iommu DT binding. More drivers like this are likely to follow
 for the following merge window, but we should be able to do
 those through the iommu maintainer.
 
 Other notable changes are:
 * reset controller drivers from the reset maintainer (socfpga, sti, berlin)
 * fixes for the keystone navigator driver merged last time
 * at91 rtc driver changes related to the at91 cleanups
 * ARM perf driver changes from Will Deacon
 * updates for the brcmstb_gisb driver
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Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "These are changes for drivers that are intimately tied to some SoC and
  for some reason could not get merged through the respective subsystem
  maintainer tree.

  The largest single change here this time around is the Tegra
  iommu/memory controller driver, which gets updated to the new iommu DT
  binding.  More drivers like this are likely to follow for the
  following merge window, but we should be able to do those through the
  iommu maintainer.

  Other notable changes are:
   - reset controller drivers from the reset maintainer (socfpga, sti,
     berlin)
   - fixes for the keystone navigator driver merged last time
   - at91 rtc driver changes related to the at91 cleanups
   - ARM perf driver changes from Will Deacon
   - updates for the brcmstb_gisb driver"

* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (53 commits)
  clocksource: arch_timer: Allow the device tree to specify uninitialized timer registers
  clocksource: arch_timer: Fix code to use physical timers when requested
  memory: Add NVIDIA Tegra memory controller support
  bus: brcmstb_gisb: Add register offset tables for older chips
  bus: brcmstb_gisb: Look up register offsets in a table
  bus: brcmstb_gisb: Introduce wrapper functions for MMIO accesses
  bus: brcmstb_gisb: Make the driver buildable on MIPS
  of: Add NVIDIA Tegra memory controller binding
  ARM: tegra: Move AHB Kconfig to drivers/amba
  amba: Add Kconfig file
  clk: tegra: Implement memory-controller clock
  serial: samsung: Fix serial config dependencies for exynos7
  bus: brcmstb_gisb: resolve section mismatch
  ARM: common: edma: edma_pm_resume may be unused
  ARM: common: edma: add suspend resume hook
  powerpc/iommu: Rename iommu_[un]map_sg functions
  rtc: at91sam9: add DT bindings documentation
  rtc: at91sam9: use clk API instead of relying on AT91_SLOW_CLOCK
  ARM: at91: add clk_lookup entry for RTT devices
  rtc: at91sam9: rework the Kconfig description
  ...
2014-12-09 14:48:22 -08:00
Linus Torvalds
6cd94d5e57 ARM: SoC platform changes for 3.19
New and updated SoC support, notable changes include:
 
 * bcm: brcmstb SMP support
 * bcm: initial iproc/cygnus support
 * exynos: Exynos4415 SoC support
 * exynos: PMU and suspend support for Exynos5420
 * exynos: PMU support for Exynos3250
 * exynos: pm related maintenance
 * imx: new LS1021A SoC support
 * imx: vybrid 610 global timer support
 * integrator: convert to using multiplatform configuration
 * mediatek: earlyprintk support for mt8127/mt8135
 * meson: meson8 soc and l2 cache controller support
 * mvebu: Armada 38x CPU hotplug support
 * mvebu: drop support for prerelease Armada 375 Z1 stepping
 * mvebu: extended suspend support, now works on Armada 370/XP
 * omap: hwmod related maintenance
 * omap: prcm cleanup
 * pxa: initial pxa27x DT handling
 * rockchip: SMP support for rk3288
 * rockchip: add cpu frequency scaling support
 * shmobile: r8a7740 power domain support
 * shmobile: various small restart, timer, pci apmu changes
 * sunxi: Allwinner A80 (sun9i) earlyprintk support
 * ux500: power domain support
 
 Overall, a significant chunk of changes, coming mostly from
 the usual suspects: omap, shmobile, samsung and mvebu, all of
 which already contain a lot of platform specific code in
 arch/arm.
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Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform changes from Arnd Bergmann:
 "New and updated SoC support, notable changes include:

   - bcm:
        brcmstb SMP support
        initial iproc/cygnus support
   - exynos:
        Exynos4415 SoC support
        PMU and suspend support for Exynos5420
        PMU support for Exynos3250
        pm related maintenance
   - imx:
        new LS1021A SoC support
        vybrid 610 global timer support
   - integrator:
        convert to using multiplatform configuration
   - mediatek:
        earlyprintk support for mt8127/mt8135
   - meson:
        meson8 soc and l2 cache controller support
   - mvebu:
        Armada 38x CPU hotplug support
        drop support for prerelease Armada 375 Z1 stepping
        extended suspend support, now works on Armada 370/XP
   - omap:
        hwmod related maintenance
        prcm cleanup
   - pxa:
        initial pxa27x DT handling
   - rockchip:
        SMP support for rk3288
        add cpu frequency scaling support
   - shmobile:
        r8a7740 power domain support
        various small restart, timer, pci apmu changes
   - sunxi:
        Allwinner A80 (sun9i) earlyprintk support
   - ux500:
        power domain support

  Overall, a significant chunk of changes, coming mostly from the usual
  suspects: omap, shmobile, samsung and mvebu, all of which already
  contain a lot of platform specific code in arch/arm"

* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (187 commits)
  ARM: mvebu: use the cpufreq-dt platform_data for independent clocks
  soc: integrator: Add terminating entry for integrator_cm_match
  ARM: mvebu: add SDRAM controller description for Armada XP
  ARM: mvebu: adjust mbus controller description on Armada 370/XP
  ARM: mvebu: add suspend/resume DT information for Armada XP GP
  ARM: mvebu: synchronize secondary CPU clocks on resume
  ARM: mvebu: make sure MMU is disabled in armada_370_xp_cpu_resume
  ARM: mvebu: Armada XP GP specific suspend/resume code
  ARM: mvebu: reserve the first 10 KB of each memory bank for suspend/resume
  ARM: mvebu: implement suspend/resume support for Armada XP
  clk: mvebu: add suspend/resume for gatable clocks
  bus: mvebu-mbus: provide a mechanism to save SDRAM window configuration
  bus: mvebu-mbus: suspend/resume support
  clocksource: time-armada-370-xp: add suspend/resume support
  irqchip: armada-370-xp: Add suspend/resume support
  ARM: add lolevel debug support for asm9260
  ARM: add mach-asm9260
  ARM: EXYNOS: use u8 for val[] in struct exynos_pmu_conf
  power: reset: imx-snvs-poweroff: add power off driver for i.mx6
  ARM: imx: temporarily remove CONFIG_SOC_FSL from LS1021A
  ...
2014-12-09 14:38:28 -08:00
Linus Torvalds
6c9e92476b ARM: SoC cleanups for 3.19
The remaining cleanups for 3.19 are to a large part result of
 devicetree conversion nearing completion on two other platforms
 besides AT91:
 
 * Like AT91, Renesas shmobile is in the process to migrate to DT and
   multiplatform, but using a different approach of doing it one
   SoC at a time. For 3.19, the r8a7791 platform and associated\
   "Koelsch" board are considered complete and we remove the non-DT
   non-multiplatform support for this.
 
 * The ARM Versatile Express has supported DT and multiplatform
   for a long time, but we have still kept the legacy board files
   around, because not all drivers were fully working before. We
   have finally taken the last step to remove the board files.
 
 Other changes in this branch are preparation for the later branches
 or just unrelated to the more interesting changes:
 * The dts files for arm64 get moved into per-vendor directories for
   a clearer structure.
 * Some dead code removal (zynq, exynos, davinci, imx)
 * Using pr_*() macros more consistently instead of printk(KERN_*)
   in some platform code.
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Merge tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC cleanups from Arnd Bergmann:
 "The remaining cleanups for 3.19 are to a large part result of
  devicetree conversion nearing completion on two other platforms
  besides AT91:

   - Like AT91, Renesas shmobile is in the process to migrate to DT and
     multiplatform, but using a different approach of doing it one SoC
     at a time.  For 3.19, the r8a7791 platform and associated "Koelsch"
     board are considered complete and we remove the non-DT
     non-multiplatform support for this.

   - The ARM Versatile Express has supported DT and multiplatform for a
     long time, but we have still kept the legacy board files around,
     because not all drivers were fully working before.  We have finally
     taken the last step to remove the board files.

  Other changes in this branch are preparation for the later branches or
  just unrelated to the more interesting changes:

   - The dts files for arm64 get moved into per-vendor directories for a
     clearer structure.

   - Some dead code removal (zynq, exynos, davinci, imx)

   - Using pr_*() macros more consistently instead of printk(KERN_*) in
     some platform code"

* tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (71 commits)
  ARM: zynq: Remove secondary_startup() declaration from header
  ARM: vexpress: Enable regulator framework when MMCI is in use
  ARM: vexpress: Remove non-DT code
  ARM: imx: Remove unneeded .map_io initialization
  ARM: dts: imx6qdl-sabresd: Fix the microphone route
  ARM: imx: refactor mxc_iomux_mode()
  ARM: imx: simplify clk_pllv3_prepare()
  ARM: imx6q: drop unnecessary semicolon
  ARM: imx: clean up machine mxc_arch_reset_init_dt reset init
  ARM: dts: imx6qdl-rex: Remove unneeded 'fsl,mode' property
  ARM: dts: imx6qdl-gw5x: Remove unneeded 'fsl,mode' property
  ARM: dts: imx6qdl-sabresd: Use IMX6QDL_CLK_CKO define
  ARM: at91: remove useless init_time for DT-only SoCs
  ARM: davinci: Remove redundant casts
  ARM: davinci: Use standard logging styles
  ARM: shmobile: r8a7779: Spelling/grammar s/entity/identity/, s/map/mapping/
  ARM: shmobile: sh7372: Spelling/grammar s/entity map/identity mapping/
  ARM: shmobile: sh73a0: Spelling/grammar s/entity map/identity mapping/
  ARM: EXYNOS: Remove unused static iomapping
  ARM: at91: fix build breakage due to legacy board removals
  ...
2014-12-09 14:18:35 -08:00
Linus Torvalds
0563fdc0d9 ARM: SoC cleanup on mach-at91 for 3.19
On Atmel AT91, the conversion to device tree is now considered complete,
 and all machines that were not already converted in 3.18 are assumed to
 be unused and dropped by the maintainer.
 
 All remaining board files that were written in C are dropped, and the
 ancient at91x40 sub-platform (based on an MMU-less ARM7) is removed
 altogether.  Cleaning up the last pieces was great fun, so I took the
 time to do some of the coding myself and removed several hundred code
 lines that ended up unused after the board files were done.
 
 There are still a couple of AT91 specific device drivers that are not
 converted to DT (CF, USB-OTG) and currently not working, and the platform
 itself is not "multiplatform"-enabled, but both issues are going to be
 taken care of in the 3.20 cycle.
 
 This is split out from the other cleanups purely based on the size
 of the branch.
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Merge tag 'at91-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC cleanup on mach-at91 from Arnd Bergmann:
 "On Atmel AT91, the conversion to device tree is now considered
  complete, and all machines that were not already converted in 3.18 are
  assumed to be unused and dropped by the maintainer.

  All remaining board files that were written in C are dropped, and the
  ancient at91x40 sub-platform (based on an MMU-less ARM7) is removed
  altogether.  Cleaning up the last pieces was great fun, so I took the
  time to do some of the coding myself and removed several hundred code
  lines that ended up unused after the board files were done.

  There are still a couple of AT91 specific device drivers that are not
  converted to DT (CF, USB-OTG) and currently not working, and the
  platform itself is not "multiplatform"-enabled, but both issues are
  going to be taken care of in the 3.20 cycle.

  This is split out from the other cleanups purely based on the size of
  the branch"

* tag 'at91-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (33 commits)
  ARM: at91: remove unused board.h file
  ARM: at91: remove unneeded header files
  ARM: at91/clocksource: remove !DT PIT initializations
  ARM: at91: at91rm9200 ST initialization is now DT only
  ARM: at91: remove old AT91-specific drivers
  ARM: at91: cleanup initilisation code by removing dead code
  ARM: at91/Kconfig: select board files automatically
  ARM: at91: remove unused IRQ function declarations
  ARM: at91: remove legacy IRQ driver and related code
  ARM: at91: remove old at91-specific clock driver
  ARM: at91: remove clock data in at91sam9n12.c and at91sam9x5.c files
  ARM: at91: remove all !DT related configuration options
  ARM: at91/trivial: update Kconfig comment to mention SAMA5
  ARM: at91: always USE_OF from now on
  ARM: at91/Kconfig: remove ARCH_AT91RM9200 option for drivers
  ARM: at91: switch configuration option to SOC_AT91RM9200
  ARM: at91: remove at91rm9200 legacy board support
  ARM: at91: remove at91rm9200 legacy boards files
  ARM: at91/Kconfig: remove useless fbdev Kconfig options
  ARM: at91: remove at91sam9261/at91sam9g10 legacy board support
  ...
2014-12-09 14:17:12 -08:00
Linus Torvalds
0a9e0acddb ARM: SoC non-critical bug fixes for 3.19
These are bug fixes for harmless problems that were not important
 enough to get fixed in 3.19. This contains updates to the MAINTAINERS
 file, in particular:
 
 - Ben Dooks stepped down as Samsung co-maintainer (thanks Ben for
   long years of maintaining this). Kukjin Kim, who has been
   doing the work de-facto by himself recently is now the
   only maintainer.
 - Liviu, Sudeep and Lorenzo from ARM now officially maintain the
   Versatile Express platform, which was orphaned (thanks for
 - Gregory Fong and Florian Fainelli help out on the Broadcom BCM7XXX
   platform
 - Ray Jui and Scott Branden are the future maintainers for the
   newly merged Broadcom Cygnus platform. Welcome!
 
 In terms of actual fixes, we have the usual set of OMAP bug fixes,
 which Tony Lindgren separates out well from the other OMAP changes,
 one really ep93xx regression fix against 3.11 that didn't make it for
 3.18, a few GIC changes from Marc Zyngier as a preparation for
 later rework (the current code is wrong in a harmless way), on
 Tegra regression and one samsung spelling fix.
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Merge tag 'fixes-nc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC non-critical bug fixes from Arnd Bergmann:
 "These are bug fixes for harmless problems that were not important
  enough to get fixed in 3.19.  This contains updates to the MAINTAINERS
  file, in particular:

   - Ben Dooks stepped down as Samsung co-maintainer (thanks Ben for
     long years of maintaining this).  Kukjin Kim, who has been doing
     the work de-facto by himself recently is now the only maintainer.

   - Liviu, Sudeep and Lorenzo from ARM now officially maintain the
     Versatile Express platform, which was orphaned (thanks for

   - Gregory Fong and Florian Fainelli help out on the Broadcom BCM7XXX
     platform

   - Ray Jui and Scott Branden are the future maintainers for the newly
     merged Broadcom Cygnus platform.  Welcome!

  In terms of actual fixes, we have the usual set of OMAP bug fixes,
  which Tony Lindgren separates out well from the other OMAP changes,
  one really ep93xx regression fix against 3.11 that didn't make it for
  3.18, a few GIC changes from Marc Zyngier as a preparation for later
  rework (the current code is wrong in a harmless way), on Tegra
  regression and one samsung spelling fix"

* tag 'fixes-nc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: imx6: fix bogus use of irq_get_irq_data
  ARM: imx: irq: fix buggy usage of irq_data irq field
  MAINTAINERS: ARM Versatile Express platform, add missing pattern
  MAINTAINERS: ARM Versatile Express platform
  arm: ep93xx: add dma_masks for the M2P and M2M DMA controllers
  MAINTAINERS: Add ahci_st.c to ARCH/STI architecture
  MAINTAINERS: add entry for the GISB arbiter driver
  MAINTAINERS: update brcmstb entries
  MAINTAINERS: update email address and cleanup for exynos entry
  ARM: tegra: Re-add removed SoC id macro to tegra_resume()
  MAINTAINERS: Entry for Cygnus/iproc arm architecture
  ARM: OMAP: serial: remove last vestige of DTR_gpio support.
  ARM: OMAP2+: gpmc: Get rid of "ti,elm-id not found" warning
  ARM: EXYNOS: fix typo in static struct name "exynos5_list_diable_wfi_wfe"
  ARM: OMAP2: Remove unnecessary KERN_* in omap_phy_internal.c
  ARM: OMAP4+: Remove unused omap_l3_noc platform init
  ARM: dts: Add twl keypad map for omap3 EVM
  ARM: dts: Add twl keypad map for LDP
  ARM: dts: Fix NAND last partition size on LDP
  ARM: OMAP3: Fix errors for omap_l3_smx when booted with device tree
2014-12-09 14:14:47 -08:00
Linus Torvalds
b64bb1d758 arm64 updates for 3.19
Changes include:
  - Support for alternative instruction patching from Andre
  - seccomp from Akashi
  - Some AArch32 instruction emulation, required by the Android folks
  - Optimisations for exception entry/exit code, cmpxchg, pcpu atomics
  - mmu_gather range calculations moved into core code
  - EFI updates from Ard, including long-awaited SMBIOS support
  - /proc/cpuinfo fixes to align with the format used by arch/arm/
  - A few non-critical fixes across the architecture
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
 "Here's the usual mixed bag of arm64 updates, also including some
  related EFI changes (Acked by Matt) and the MMU gather range cleanup
  (Acked by you).

  Changes include:
   - support for alternative instruction patching from Andre
   - seccomp from Akashi
   - some AArch32 instruction emulation, required by the Android folks
   - optimisations for exception entry/exit code, cmpxchg, pcpu atomics
   - mmu_gather range calculations moved into core code
   - EFI updates from Ard, including long-awaited SMBIOS support
   - /proc/cpuinfo fixes to align with the format used by arch/arm/
   - a few non-critical fixes across the architecture"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (70 commits)
  arm64: remove the unnecessary arm64_swiotlb_init()
  arm64: add module support for alternatives fixups
  arm64: perf: Prevent wraparound during overflow
  arm64/include/asm: Fixed a warning about 'struct pt_regs'
  arm64: Provide a namespace to NCAPS
  arm64: bpf: lift restriction on last instruction
  arm64: Implement support for read-mostly sections
  arm64: compat: align cacheflush syscall with arch/arm
  arm64: add seccomp support
  arm64: add SIGSYS siginfo for compat task
  arm64: add seccomp syscall for compat task
  asm-generic: add generic seccomp.h for secure computing mode 1
  arm64: ptrace: allow tracer to skip a system call
  arm64: ptrace: add NT_ARM_SYSTEM_CALL regset
  arm64: Move some head.text functions to executable section
  arm64: jump labels: NOP out NOP -> NOP replacement
  arm64: add support to dump the kernel page tables
  arm64: Add FIX_HOLE to permanent fixed addresses
  arm64: alternatives: fix pr_fmt string for consistency
  arm64: vmlinux.lds.S: don't discard .exit.* sections at link-time
  ...
2014-12-09 13:12:47 -08:00
Linus Torvalds
a4a26e8e92 nios2 for v3.19-rc1
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Merge tag 'nios2-v3.19-rc1' of git://git.rocketboards.org/linux-socfpga-next

Pull Altera Nios II processor support from Ley Foon Tan:
 "Here is the Linux port for Nios II processor (from Altera) arch/nios2/
  tree for v3.19.

  The patchset has been discussed on the kernel mailing lists since
  April and has gone through 6 revisions of review.  The additional
  changes since then have been mostly further cleanups and fixes when
  merged with other trees.

  The arch code is in arch/nios2 and one asm-generic change (acked by
  Arnd)"

Arnd Bergmann says:
 "I've reviewed the architecture port in the past and it looks good in
  its latest version"

Acked-by: Arnd Bergmann <arnd@arndb.de>

* tag 'nios2-v3.19-rc1' of git://git.rocketboards.org/linux-socfpga-next: (40 commits)
  nios2: Make NIOS2_CMDLINE_IGNORE_DTB depend on CMDLINE_BOOL
  nios2: Add missing NR_CPUS to Kconfig
  nios2: asm-offsets: Remove unused definition TI_TASK
  nios2: Remove write-only struct member from nios2_timer
  nios2: Remove unused extern declaration of shm_align_mask
  nios2: include linux/type.h in io.h
  nios2: move include asm-generic/io.h to end of file
  nios2: remove include asm-generic/iomap.h from io.h
  nios2: remove unnecessary space before define
  nios2: fix error handling of irq_of_parse_and_map
  nios2: Use IS_ENABLED instead of #ifdefs to check config symbols
  nios2: Build infrastructure
  Documentation: Add documentation for Nios2 architecture
  MAINTAINERS: Add nios2 maintainer
  nios2: ptrace support
  nios2: Module support
  nios2: Nios2 registers
  nios2: Miscellaneous header files
  nios2: Cpuinfo handling
  nios2: Time keeping
  ...
2014-12-09 12:45:41 -08:00
Linus Torvalds
f3f62a38ce SCSI for-linus on 20141208
This patch is the usual mix of driver updates (srp, ipr, scsi_debug, NCR5380,
 fnic, 53c974, ses, wd719x, hpsa, megaraid_sas).  Of those, wd7a9x is new and
 53c974 is a rewrite of the old tmscsim driver and the extensive work by Finn
 Thain rewrites all the NCR5380 based drivers.  There's also extensive
 infrastructure updates: a new logging infrastructure for sense information and
 a rewrite of the tagged command queue API and an assortment of minor updates.
 
 Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This patch is the usual mix of driver updates (srp, ipr, scsi_debug,
  NCR5380, fnic, 53c974, ses, wd719x, hpsa, megaraid_sas).

  Of those, wd7a9x is new and 53c974 is a rewrite of the old tmscsim
  driver and the extensive work by Finn Thain rewrites all the NCR5380
  based drivers.

  There's also extensive infrastructure updates: a new logging
  infrastructure for sense information and a rewrite of the tagged
  command queue API and an assortment of minor updates"

* tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (183 commits)
  scsi: set fmt to NULL scsi_extd_sense_format() by default
  libsas: remove task_collector mode
  wd719x: remove dma_cache_sync call
  scsi_debug: add Report supported opcodes+tmfs; Compare and write
  scsi_debug: change SCSI command parser to table driven
  scsi_debug: add Capacity Changed Unit Attention
  scsi_debug: append inject error flags onto scsi_cmnd object
  scsi_debug: pinpoint invalid field in sense data
  wd719x: Add firmware documentation
  wd719x: Introduce Western Digital WD7193/7197/7296 PCI SCSI card driver
  eeprom-93cx6: Add (read-only) support for 8-bit mode
  esas2r: fix an oversight in setting return value
  esas2r: fix an error path in esas2r_ioctl_handler
  esas2r: fir error handling in do_fm_api
  scsi: add SPC-3 command definitions
  scsi: rename SERVICE_ACTION_IN to SERVICE_ACTION_IN_16
  scsi: remove scsi_driver owner field
  scsi: move scsi_dispatch_cmd to scsi_lib.c
  scsi: stop passing a gfp_mask argument down the command setup path
  scsi: remove scsi_next_command
  ...
2014-12-08 21:19:19 -08:00
Linus Torvalds
140dfc9299 - Significant DM thin-provisioning performance improvements to meet
performance requirements that were requested by the Gluster
   distributed filesystem.  Specifically, dm-thinp now takes care to
   aggregate IO that will be issued to the same thinp block before
   issuing IO to the underlying devices.  This really helps improve
   performance on HW RAID6 devices that have a writeback cache because it
   avoids RMW in the HW RAID controller.
 
 - Some stable fixes: fix leak in DM bufio if integrity profiles were
   enabled, use memzero_explicit in DM crypt to avoid any potential for
   information leak, and a DM cache fix to properly mark a cache block
   dirty if it was promoted to the cache via the overwrite optimization.
 
 - A few simple DM persistent data library fixes
 
 - DM cache multiqueue policy block promotion improvements.
 
 - DM cache discard improvements that take advantage of range
   (multiblock) discard support in the DM bio-prison.  This allows for
   much more efficient bulk discard processing (e.g. when mkfs.xfs
   discards the entire device).
 
 - Some small optimizations in DM core and RCU deference cleanups
 
 - DM core changes to suspend/resume code to introduce the new internal
   suspend/resume interface that the DM thin-pool target now uses to
   suspend/resume active thin devices when the thin-pool must
   suspend/resume.  This avoids forcing userspace to track all active
   thin volumes in a thin-pool when the thin-pool is suspended for the
   purposes of metadata or data space resize.
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Merge tag 'dm-3.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mike Snitzer:

 - Significant DM thin-provisioning performance improvements to meet
   performance requirements that were requested by the Gluster
   distributed filesystem.

   Specifically, dm-thinp now takes care to aggregate IO that will be
   issued to the same thinp block before issuing IO to the underlying
   devices.  This really helps improve performance on HW RAID6 devices
   that have a writeback cache because it avoids RMW in the HW RAID
   controller.

 - Some stable fixes: fix leak in DM bufio if integrity profiles were
   enabled, use memzero_explicit in DM crypt to avoid any potential for
   information leak, and a DM cache fix to properly mark a cache block
   dirty if it was promoted to the cache via the overwrite optimization.

 - A few simple DM persistent data library fixes

 - DM cache multiqueue policy block promotion improvements.

 - DM cache discard improvements that take advantage of range
   (multiblock) discard support in the DM bio-prison.  This allows for
   much more efficient bulk discard processing (e.g.  when mkfs.xfs
   discards the entire device).

 - Some small optimizations in DM core and RCU deference cleanups

 - DM core changes to suspend/resume code to introduce the new internal
   suspend/resume interface that the DM thin-pool target now uses to
   suspend/resume active thin devices when the thin-pool must
   suspend/resume.

   This avoids forcing userspace to track all active thin volumes in a
   thin-pool when the thin-pool is suspended for the purposes of
   metadata or data space resize.

* tag 'dm-3.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (49 commits)
  dm crypt: use memzero_explicit for on-stack buffer
  dm space map metadata: fix sm_bootstrap_get_count()
  dm space map metadata: fix sm_bootstrap_get_nr_blocks()
  dm bufio: fix memleak when using a dm_buffer's inline bio
  dm cache: fix spurious cell_defer when dealing with partial block at end of device
  dm cache: dirty flag was mistakenly being cleared when promoting via overwrite
  dm cache: only use overwrite optimisation for promotion when in writeback mode
  dm cache: discard block size must be a multiple of cache block size
  dm cache: fix a harmless race when working out if a block is discarded
  dm cache: when reloading a discard bitset allow for a different discard block size
  dm cache: fix some issues with the new discard range support
  dm array: if resizing the array is a noop set the new root to the old one
  dm: use rcu_dereference_protected instead of rcu_dereference
  dm thin: fix pool_io_hints to avoid looking at max_hw_sectors
  dm thin: suspend/resume active thin devices when reloading thin-pool
  dm: enhance internal suspend and resume interface
  dm thin: do not allow thin device activation while pool is suspended
  dm: add presuspend_undo hook to target_type
  dm: return earlier from dm_blk_ioctl if target doesn't implement .ioctl
  dm thin: remove stale 'trim' message in block comment above pool_message
  ...
2014-12-08 21:10:03 -08:00
Linus Torvalds
f94784bdb1 regulator: Updates for v3.19
The main thing this time around is support for suspend mode
 configuration from DT which will enable some very useful power savings
 on systems where we can't rely on the bootloader configuration.  We
 still don't really support dynamic configuration of this at runtime,
 that may come later if there is any demand.
 
  - Support for specifying the target regulation mode and voltage during
    system suspend via DT, enabling power savings in that mode.
  - Reduce the default verbosity of the logging on boot, improving boot
    times especially for systems with very large numbers of regulators.
  - Lots of cleanups and fixes for Maxim PMIC drivers.
  - New driver for Richtek RT5033.
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Merge tag 'regulator-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "The main thing this time around is support for suspend mode
  configuration from DT which will enable some very useful power savings
  on systems where we can't rely on the bootloader configuration.  We
  still don't really support dynamic configuration of this at runtime,
  that may come later if there is any demand.

  Summary:
   - Support for specifying the target regulation mode and voltage
     during system suspend via DT, enabling power savings in that mode.
   - Reduce the default verbosity of the logging on boot, improving boot
     times especially for systems with very large numbers of regulators.
   - Lots of cleanups and fixes for Maxim PMIC drivers.
   - New driver for Richtek RT5033"

* tag 'regulator-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (62 commits)
  regulator: core: Fix regualtor_ena_gpio_free not to access pin after freeing
  regulator: sky81452: Modify Device Tree structure
  regulator: sky81452: Modify Device Tree structure
  dt-bindings: Update documentation for "system-power-controller" and fix misspellings
  of: Rename "poweroff-source" property to "system-power-controller"
  regulator: max77686: Remove support for board files
  regulator: max77802: Remove support for board files
  regulator: max77802: Fill regulator modes translation callback
  regulator: max77802: Document binding for regulator operating modes
  regulator: of: Add support for parsing initial and suspend modes
  regulator: of: Pass the regulator description in the match table
  regulator: of: Add regulator desc param to of_get_regulator_init_data()
  regulator: Add mode mapping function to struct regulator_desc
  regulator: Document binding for initial and suspend modes
  regulator: core: Add PRE_DISABLE notification
  regulator: gpio: fix parsing of gpio list
  regulator: rpm: add support for RPM-controller SMB208
  regulator: da9063: Do not transform local IRQ to virtual
  regulator: sky81452: Modify dependent Kconfig symbol
  regulator: rt5033: Add RT5033 Regulator device driver
  ...
2014-12-08 20:42:41 -08:00
Linus Torvalds
de74038644 regmap: Updates for v3.19
A couple of new features this time around, nothing that should have any
 impact on most users:
 
  - Cleanups and optimization of the path for reading back the register
    defaults from the hardware at startup, reducing boot times for
    devices that use this (most don't, either populating on demand or
    providing defaults).
  - A bus implementation for AC'97 devices.
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Merge tag 'regmap-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "A couple of new features this time around, nothing that should have
  any impact on most users:

   - Cleanups and optimization of the path for reading back the register
     defaults from the hardware at startup, reducing boot times for
     devices that use this (most don't, either populating on demand or
     providing defaults).
   - A bus implementation for AC'97 devices"

* tag 'regmap-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: ac97: Add generic AC'97 callbacks
  regmap: cache: Sort include headers alphabetically
  regmap: cache: Fix possible ZERO_SIZE_PTR pointer dereferencing error.
  regmap: cache: use kmalloc_array instead of kmalloc
  regmap: cache: speed regcache_hw_init() up.
  regmap: cache: fix errno in regcache_hw_init()
  regmap: cache: cleanup regcache_hw_init()
  regmap: cache: fix errno in regcache_hw_init()
2014-12-08 20:35:33 -08:00
Linus Torvalds
177808cd28 Notable changes:
New driver for NCT7802Y
 Add support for TMP435, LM95233, LM95235, NCT6792D, and NXP LM75B
 Add regulator support for PMBus chips, specifically LTX2978
 Add support for humidity sensors to iio-hwmon bridge driver
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Merge tag 'hwmon-for-linus-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:
 "Notable changes:
   - new driver for NCT7802Y
   - support for TMP435, LM95233, LM95235, NCT6792D, and NXP LM75B
   - regulator support for PMBus chips, specifically LTX2978
   - support for humidity sensors to iio-hwmon bridge driver

* tag 'hwmon-for-linus-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (21 commits)
  hwmon: (tmp401) Detect TMP435 on all addresses it supports
  hwmon: (lm75) Strengthen detect function
  hwmon: (gpio-fan) Add a shutdown handler to poweroff the fans
  hwmon: (gpio-fan) Allow usage of gpio operations that may sleep
  hwmon: (tmp401) Bail out from tmp401_probe() in case of write errors
  hwmon: (tmp401) Add support for TI TMP435
  hwmon: (lm95234) Add support for LM95233
  hwmon: (lm95245) Add support for LM95235
  hwmon: (ina2xx) bail-out from ina2xx_probe() in case of configuration errors
  hwmon: (nct6775) Add blank lines after declarations
  hwmon: (nct6775) Add support for NCT6792D
  hwmon: (nct6775) Documentation updates
  hwmon: (lm75) Add support for the NXP LM75B
  hwmon: Driver for Nuvoton NCT7802Y
  hwmon: (ibmpowernv) Convert to module_platform_driver
  hwmon: (ibmpowernv) Use platform 'id_table' to probe the device
  hwmon: (iio_hwmon) Add support for humidity sensors
  hwmon: (ltc2978) Add regulator support
  hwmon: (pmbus) Add regulator support
  hwmon: (pmbus) add helpers for byte write and read modify write
  ...
2014-12-08 20:30:25 -08:00
Linus Torvalds
0160928e79 EDAC updates all over the place:
* Enablement for AMD F15h models 0x60 CPUs. Most notably DDR4 RAM
 support. Out of tree stuff is
 
  arch/x86/kernel/amd_nb.c       |   2 +
  include/linux/pci_ids.h        |   2 +
 
 adding the required PCI IDs. From Aravind Gopalakrishnan.
 
 * Enable amd64_edac for 32-bit due to popular demand. From Tomasz Pala.
 
 * Convert the AMD MCE injection module to debugfs, where it belongs.
 
 * Misc EDAC cleanups
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Merge tag 'edac_for_3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC updates from Borislav Petkov:
 "EDAC updates all over the place:

   - Enablement for AMD F15h models 0x60 CPUs.  Most notably DDR4 RAM
     support.  Out of tree stuff is adding the required PCI IDs.  From
     Aravind Gopalakrishnan.

   - Enable amd64_edac for 32-bit due to popular demand.  From Tomasz
     Pala.

   - Convert the AMD MCE injection module to debugfs, where it belongs.

   - Misc EDAC cleanups"

* tag 'edac_for_3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC, MCE, AMD: Correct formatting of decoded text
  EDAC, mce_amd_inj: Add an injector function
  EDAC, mce_amd_inj: Add hw-injection attributes
  EDAC, mce_amd_inj: Enable direct writes to MCE MSRs
  EDAC, mce_amd_inj: Convert mce_amd_inj module to debugfs
  EDAC: Delete unnecessary check before calling pci_dev_put()
  EDAC, pci_sysfs: remove unneccessary ifdef around entire file
  ghes_edac: Use snprintf() to silence a static checker warning
  amd64_edac: Build module on x86-32
  EDAC, MCE, AMD: Add decoding table for MC6 xec
  amd64_edac: Add F15h M60h support
  {mv64x60,ppc4xx}_edac,: Remove deprecated IRQF_DISABLED
  EDAC: Sync memory types and names
  EDAC: Add DDR3 LRDIMM entries to edac_mem_types
  x86, amd_nb: Add device IDs to NB tables for F15h M60h
  pci_ids: Add PCI device IDs for F15h M60h
2014-12-08 20:17:49 -08:00
Linus Torvalds
3a7dbed7f2 Hi Linus,
Changes to the core:
  - Honour PLATFORM_DEVID_NONE and PLATFORM_DEVID_AUTO dev IDs
 
 Changes to existing drivers:
  - IRQ additions/fixes; axp20x, da9063-core
  - Code simplification; i2c-dln2
  - Regmap additions/fixes; max77693
  - Error checking/handling improvements; dln2, db8500-prcmu
  - Bug fixes; dln2, wm8350-core
  - DT support/documentation; max77693, max77686, tps65217, twl4030-power,
                              gpio-tc3589x
  - Decouple syscon interface from platform devices
  - Use MFD hotplug registration; rtsx_usb, viperboard, hid-sensor-hub
  - Regulator fixups; sec-core
  - Power Management additions/fixes; rts5227, tc6393xb
  - Remove relic/redundant code; ab8500-sysctrl, lpc_sch, max77693-private
  - Clean-up/coding style changes; tps65090
  - Clk additions/fixes; tc6393xb, tc6387xb, t7l66xb
  - Add USB-SPI support; dln2
  - Trivial changes; max14577, arizona-spi, lpc_sch, wm8997-tables, wm5102-tables
                     wm5110-tables, axp20x, atmel-hlcdc, rtsx_pci
 
 New drivers/supported devices:
  - axp288 PMIC support added to axp20x
  - s2mps13 support added to sec-core
  - New support for Diolan DLN-2
  - New support for atmel-hlcdc
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Merge tag 'mfd-for-linus-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "Changes to the core:
   - Honour PLATFORM_DEVID_NONE and PLATFORM_DEVID_AUTO dev IDs

  Changes to existing drivers:
   - IRQ additions/fixes; axp20x, da9063-core
   - Code simplification; i2c-dln2
   - Regmap additions/fixes; max77693
   - Error checking/handling improvements; dln2, db8500-prcmu
   - Bug fixes; dln2, wm8350-core
   - DT support/documentation; max77693, max77686, tps65217, twl4030-power,
                               gpio-tc3589x
   - Decouple syscon interface from platform devices
   - Use MFD hotplug registration; rtsx_usb, viperboard, hid-sensor-hub
   - Regulator fixups; sec-core
   - Power Management additions/fixes; rts5227, tc6393xb
   - Remove relic/redundant code; ab8500-sysctrl, lpc_sch, max77693-private
   - Clean-up/coding style changes; tps65090
   - Clk additions/fixes; tc6393xb, tc6387xb, t7l66xb
   - Add USB-SPI support; dln2
   - Trivial changes; max14577, arizona-spi, lpc_sch, wm8997-tables, wm5102-tables
                      wm5110-tables, axp20x, atmel-hlcdc, rtsx_pci

  New drivers/supported devices:
   - axp288 PMIC support added to axp20x
   - s2mps13 support added to sec-core
   - New support for Diolan DLN-2
   - New support for atmel-hlcdc"

* tag 'mfd-for-linus-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (55 commits)
  mfd: rtsx: Add func to split u32 into register
  mfd: atmel-hlcdc: Add Kconfig option description and name
  mfd: da9063: Get irq base dynamically before registering device
  mfd: max14577: Fix obvious typo in company name in copyright
  mfd: axp20x: Constify axp20x_acpi_match and rid unused warning
  mfd: t7l66xb: prepare/unprepare clocks
  mfd: tc6387xb: prepare/unprepare clocks
  mfd: dln2: add support for USB-SPI module
  mfd: wm5110: Add missing registers for AIF2 channels 3-6
  mfd: tc3589x: get rid of static base
  mfd: arizona: Document HP_CTRL_1L and HP_CTRL_1R registers
  mfd: wm8997: Mark INTERRUPT_STATUS_2_MASK as readable
  mfd: tc6393xb: Prepare/unprepare clocks
  mfd: tps65090: Fix bonkers indenting strategy
  mfd: tc6393xb: Fail ohci suspend if full state restore is required
  mfd: lpc_sch: Don't call mfd_remove_devices()
  mfd: wm8350-core: Fix probable mask then right shift defect
  mfd: ab8500-sysctrl: Drop ab8500_restart
  mfd: db8500-prcmu: Provide sane error path values
  mfd: db8500-prcmu: Check return of devm_ioremap for error
  ...
2014-12-08 20:02:54 -08:00
Linus Torvalds
f2fb38049c MMC core:
- Consolidation and cleanups.
 - Some improvements regarding error handling.
 - Increase maximum amount of block devices.
 - Use correct OCR mask for SDIO when restoring power.
 - Fix prepared requests while doing BKOPS.
 - Convert to modern PM ops.
 - Add mmc_send_tuning() API and convert some hosts to use it.
 
 MMC host:
 - toshsd: New Toshiba PCI SD controller driver.
 - sdhci: 64-bit ADMA support.
 - sdhci: Some regulator fixes.
 - sdhci: HS400 support.
 - sdhci: Various fixes cleanups.
 - atmel-mci: Modernization and cleanups.
 - atmel-mci: Runtime PM support.
 - omap_hsmmc: Modernization and cleanups.
 - omap_hsmmc: Fix UHS card with DDR50 support.
 - dw_mmc: Support for ARM64 and Exynos 7 variant.
 - dw_mmc: Add support for IMG Pistachio variant.
 - dw_mmc: Various fixes and cleanups.
 - mvsdio: DMA fixes.
 - mxs-mmc: Modernization and cleanups.
 - mxcmmc: Various fixes.
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Merge tag 'mmc-v3.19-1' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Consolidation and cleanups.
   - Some improvements regarding error handling.
   - Increase maximum amount of block devices.
   - Use correct OCR mask for SDIO when restoring power.
   - Fix prepared requests while doing BKOPS.
   - Convert to modern PM ops.
   - Add mmc_send_tuning() API and convert some hosts to use it.

  MMC host:
   - toshsd: New Toshiba PCI SD controller driver.
   - sdhci: 64-bit ADMA support.
   - sdhci: Some regulator fixes.
   - sdhci: HS400 support.
   - sdhci: Various fixes cleanups.
   - atmel-mci: Modernization and cleanups.
   - atmel-mci: Runtime PM support.
   - omap_hsmmc: Modernization and cleanups.
   - omap_hsmmc: Fix UHS card with DDR50 support.
   - dw_mmc: Support for ARM64 and Exynos 7 variant.
   - dw_mmc: Add support for IMG Pistachio variant.
   - dw_mmc: Various fixes and cleanups.
   - mvsdio: DMA fixes.
   - mxs-mmc: Modernization and cleanups.
   - mxcmmc: Various fixes"

* tag 'mmc-v3.19-1' of git://git.linaro.org/people/ulf.hansson/mmc: (126 commits)
  mmc: sdhci-msm: Convert to mmc_send_tuning()
  mmc: sdhci-esdhc-imx: Convert to mmc_send_tuning()
  mmc: core: Let mmc_send_tuning() to take struct mmc_host* as parameter
  mmc: queue: Improve error handling during allocation of bounce buffers
  mmc: sdhci-acpi: Add two host capabilities for Intel
  mmc: sdhci-pci: Add two host capabilities for BYT
  mmc: sdhci-acpi: Add SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
  mmc: sdhci-pci: Add SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC to BYT
  mmc: atmel-mci: use probe deferring if dma controller is not ready yet
  mmc: atmel-mci: stop using specific initcall
  mmc: atmel-mci: remove __init/__exit attributes
  mmc: atmel-mci: remove useless DMA stuff for non-dt devices
  mmc: omap_hsmmc: Fix UHS card with DDR50 support
  mmc: core: add core-level function for sending tuning commands
  mmc: core: hold SD Clock before CMD11 during Signal
  mmc: mxs-mmc: Check for clk_prepare_enable() error
  mmc: mxs-mmc: Propagate the real error
  mmc: mxs-mmc: No need to do NULL check on 'iores'
  mmc: dw_mmc: Add support for IMG Pistachio
  mmc: mxs-mmc: Simplify PM hooks
  ...
2014-12-08 18:42:44 -08:00
Arnd Bergmann
5db4500257 Merge branch 'at91/cleanup5' into next/drivers
The at91 cleanups changed a lot of files, this merges in the
latest cleanups to resolve the conflicts

Conflicts:
	arch/arm/mach-at91/at91sam9260.c
	arch/arm/mach-at91/at91sam9261.c
	arch/arm/mach-at91/at91sam9263.c
	arch/arm/mach-at91/clock.c
	arch/arm/mach-at91/clock.h
	drivers/rtc/Kconfig

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-12-08 18:29:20 +01:00
James Bottomley
096cbc35ea Merge remote-tracking branch 'scsi-queue/drivers-for-3.19' into for-linus
Conflicts:
	drivers/scsi/scsi_debug.c

Agreed and tested resolution to a merge problem between a fix in scsi_debug
and a driver update

Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2014-12-08 07:42:25 -08:00
James Bottomley
dc843ef00e Merge remote-tracking branch 'scsi-queue/core-for-3.19' into for-linus 2014-12-08 07:40:20 -08:00