Shaohua Li f51bdd2e97 mm: fix a vmscan warning ...

I get the below warning:

  BUG: using smp_processor_id() in preemptible [00000000] code: bash/746
  caller is native_sched_clock+0x37/0x6e
  Pid: 746, comm: bash Tainted: G        W   3.0.0+ #254
  Call Trace:
   [<ffffffff813435c6>] debug_smp_processor_id+0xc2/0xdc
   [<ffffffff8104158d>] native_sched_clock+0x37/0x6e
   [<ffffffff81116219>] try_to_free_mem_cgroup_pages+0x7d/0x270
   [<ffffffff8114f1f8>] mem_cgroup_force_empty+0x24b/0x27a
   [<ffffffff8114ff21>] ? sys_close+0x38/0x138
   [<ffffffff8114ff21>] ? sys_close+0x38/0x138
   [<ffffffff8114f257>] mem_cgroup_force_empty_write+0x17/0x19
   [<ffffffff810c72fb>] cgroup_file_write+0xa8/0xba
   [<ffffffff811522d2>] vfs_write+0xb3/0x138
   [<ffffffff8115241a>] sys_write+0x4a/0x71
   [<ffffffff8114ffd9>] ? sys_close+0xf0/0x138
   [<ffffffff8176deab>] system_call_fastpath+0x16/0x1b

sched_clock() can't be used with preempt enabled.  And we don't need
fast approach to get clock here, so let's use ktime API.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Tested-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>

2011-08-25 16:25:34 -07:00

..

backing-dev.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback

2011-07-26 10:39:54 -07:00

bootmem.c

crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn

2011-03-23 19:47:19 -07:00

bounce.c

bounce: call flush_dcache_page() after bounce_copy_vec()

2010-09-09 18:57:25 -07:00

cleancache.c

mm: cleancache core ops functions and config

2011-05-26 10:01:36 -06:00

compaction.c

mm: compaction: abort compaction if too many pages are isolated and caller is asynchronous V2

2011-06-15 20:04:02 -07:00

debug-pagealloc.c

generic debug pagealloc

2009-04-01 08:59:13 -07:00

dmapool.c

devres: fix possible use after free

2011-07-25 20:57:14 -07:00

fadvise.c

readahead: introduce FMODE_RANDOM for POSIX_FADV_RANDOM

2010-03-06 11:26:25 -08:00

failslab.c

fault-injection: add ability to export fault_attr in arbitrary directory

2011-08-03 14:25:20 -10:00

filemap_xip.c

mm: Convert i_mmap_lock to a mutex

2011-05-25 08:39:18 -07:00

filemap.c

mm: clarify the radix_tree exceptional cases

2011-08-03 14:25:24 -10:00

fremap.c

mm: don't access vm_flags as 'int'

2011-05-26 09:20:31 -07:00

highmem.c

mm: make HASHED_PAGE_VIRTUAL page_address' struct page argument const.

2011-08-17 13:00:20 -07:00

huge_memory.c

mm/huge_memory.c: minor lock simplification in __khugepaged_exit

2011-07-25 20:57:09 -07:00

hugetlb.c

mm: hugetlb: fix coding style issues

2011-07-25 20:57:09 -07:00

hwpoison-inject.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

init-mm.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

internal.h

mm: nommu: sort mm->mmap list properly

2011-05-25 08:39:05 -07:00

Kconfig

mm Kconfig typo: cleancacne -> cleancache

2011-06-10 14:47:52 +02:00

Kconfig.debug

mm: debug-pagealloc: fix kconfig dependency warning

2011-03-22 17:44:02 -07:00

kmemcheck.c

kmemcheck: Fix build errors due to missing slab.h

2010-03-30 22:02:32 +09:00

kmemleak-test.c

kmemleak: remove memset by using kzalloc

2011-01-27 18:31:51 +00:00

kmemleak.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

ksm.c

ksm: fix NULL pointer dereference in scan_get_next_rmap_item()

2011-06-15 20:04:02 -07:00

maccess.c

maccess,probe_kernel: Make write/read src const void *

2011-05-25 19:56:23 -04:00

madvise.c

fs: kill i_alloc_sem

2011-07-20 20:47:46 -04:00

Makefile

mm: cleancache core ops functions and config

2011-05-26 10:01:36 -06:00

memblock.c

mm/memblock.c: avoid abuse of RED_INACTIVE

2011-07-25 20:57:09 -07:00

memcontrol.c

memcg: pin execution to current cpu while draining stock

2011-08-25 16:25:33 -07:00

memory_hotplug.c

mm: extend memory hotplug API to allow memory hotplug in virtual machines

2011-07-25 20:57:08 -07:00

memory-failure.c

HWPoison: add memory_failure_queue()

2011-08-03 11:15:58 -04:00

memory.c

mm/futex: fix futex writes on archs with SW tracking of dirty & young

2011-07-25 20:57:11 -07:00

mempolicy.c

cpusets: randomize node rotor used in cpuset_mem_spread_node()

2011-07-26 16:49:43 -07:00

mempool.c

mm: remove broken 'kzalloc' mempool

2009-09-22 07:17:35 -07:00

migrate.c

migrate: don't account swapcache as shmem

2011-06-16 15:01:24 -07:00

mincore.c

mm: clarify the radix_tree exceptional cases

2011-08-03 14:25:24 -10:00

mlock.c

mm: don't access vm_flags as 'int'

2011-05-26 09:20:31 -07:00

mm_init.c

mm: mminit_loglevel cannot be __meminitdata anymore

2008-08-20 15:40:30 -07:00

mmap.c

mmap: fix and tidy up overcommit page arithmetic

2011-07-25 20:57:09 -07:00

mmu_context.c

exit: fix oops in sync_mm_rss

2010-03-24 16:31:21 -07:00

mmu_notifier.c

thp: mmu_notifier_test_young

2011-01-13 17:32:46 -08:00

mmzone.c

mm: page allocator: adjust the per-cpu counter threshold when memory is low

2011-01-13 17:32:31 -08:00

mprotect.c

thp: mprotect: transparent huge page support

2011-01-13 17:32:44 -08:00

mremap.c

mm: Convert i_mmap_lock to a mutex

2011-05-25 08:39:18 -07:00

msync.c

sanitize vfs_fsync calling conventions

2010-05-21 18:31:21 -04:00

nobootmem.c

memblock/nobootmem: remove unneeded code from alloc_bootmem_node_high()

2011-05-25 08:39:31 -07:00

nommu.c

mmap: fix and tidy up overcommit page arithmetic

2011-07-25 20:57:09 -07:00

oom_kill.c

oom: task->mm == NULL doesn't mean the memory was freed

2011-08-01 15:24:12 -10:00

page_alloc.c

fault-injection: add ability to export fault_attr in arbitrary directory

2011-08-03 14:25:20 -10:00

page_cgroup.c

mm/page_cgroup.c: simplify code by using SECTION_ALIGN_UP() and SECTION_ALIGN_DOWN() macros

2011-07-25 20:57:09 -07:00

page_io.c

block: kill off REQ_UNPLUG

2011-03-10 08:52:27 +01:00

page_isolation.c

mm: page_isolation: codeclean fix comment and rm unneeded val init

2010-10-26 16:52:11 -07:00

page-writeback.c

squeeze max-pause area and drop pass-good area

2011-08-19 22:42:07 +08:00

pagewalk.c

pagewalk: fix code comment for THP

2011-07-25 20:57:09 -07:00

percpu-km.c

percpu: clear memory allocated with the km allocator

2010-10-02 10:28:42 +03:00

percpu-vm.c

mm: remove gfp mask from pcpu_get_vm_areas

2011-01-13 17:32:34 -08:00

percpu.c

Merge branch 'for-2.6.40' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2011-05-24 11:53:42 -07:00

pgtable-generic.c

mm/pgtable-generic.c: fix CONFIG_SWAP=n build

2011-01-26 10:49:58 +10:00

prio_tree.c

sanitize <linux/prefetch.h> usage

2011-05-20 12:50:29 -07:00

quicklist.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

readahead.c

readahead: readahead page allocations are OK to fail

2011-05-25 08:39:25 -07:00

rmap.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback

2011-07-26 10:39:54 -07:00

shmem.c

mm: clarify the radix_tree exceptional cases

2011-08-03 14:25:24 -10:00

slab.c

slab, lockdep: Annotate the locks before using them

2011-08-04 10:18:00 +02:00

slob.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

slub.c

slub: Fix partial count comparison confusion

2011-08-09 21:12:31 +03:00

sparse-vmemmap.c

tree-wide: fix comment/printk typos

2010-11-01 15:38:34 -04:00

sparse.c

mm: make some struct page's const

2011-07-25 20:57:07 -07:00

swap_state.c

block: remove per-queue plugging

2011-03-10 08:52:07 +01:00

swap.c

mm: batch activate_page() to reduce lock contention

2011-05-25 08:39:37 -07:00

swapfile.c

mm: let swap use exceptional entries

2011-08-03 14:25:22 -10:00

thrash.c

mm: swap-token: add a comment for priority aging

2011-07-25 20:57:08 -07:00

truncate.c

mm: a few small updates for radix-swap

2011-08-03 14:25:24 -10:00

util.c

mm: nommu: sort mm->mmap list properly

2011-05-25 08:39:05 -07:00

vmalloc.c

mm: fix wrong vmap address calculations with odd NR_CPUS values

2011-08-14 12:32:52 -07:00

vmscan.c

mm: fix a vmscan warning

2011-08-25 16:25:34 -07:00

vmstat.c

mm, mem-hotplug: update pcp->stat_threshold when memory hotplug occur

2011-05-25 08:39:09 -07:00