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Christoph Lameter b8c4c96ed4 SLUB: Write to per cpu data when allocating it 
It turns out that the cmpxchg16b emulation has to access vmalloced
percpu memory with interrupts disabled. If the memory has never
been touched before then the fault necessary to establish the
mapping will not to occur and the kernel will fail on boot.

Fix that by reusing the CONFIG_PREEMPT code that writes the
cpu number into a field on every cpu. Writing to the per cpu
area before causes the mapping to be established before we get
to a cmpxchg16b emulation.

Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2011-03-24 21:53:07 +02:00
..
backing-dev.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2010-10-26 17:58:44 -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
compaction.c
mm: compaction: minimise the time IRQs are disabled while isolating pages for migration
2011-03-22 17:44:05 -07:00
debug-pagealloc.c
…
dmapool.c
mm/dmapool.c: use TASK_UNINTERRUPTIBLE in dma_pool_alloc()
2011-01-13 17:32:48 -08:00
fadvise.c
readahead: introduce FMODE_RANDOM for POSIX_FADV_RANDOM
2010-03-06 11:26:25 -08:00
failslab.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
filemap_xip.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
filemap.c
mm: don't return 0 too early from find_get_pages()
2011-03-22 17:44:04 -07:00
fremap.c
Avoid pgoff overflow in remap_file_pages
2010-09-25 09:34:58 -07:00
highmem.c
mm,x86: fix kmap_atomic_push vs ioremap_32.c
2010-10-27 18:03:05 -07:00
huge_memory.c
mm: use __GFP_OTHER_NODE for transparent huge pages
2011-03-22 17:44:05 -07:00
hugetlb.c
hugetlbfs: correct handling of negative input to /proc/sys/vm/nr_hugepages
2011-03-22 17:44:04 -07:00
hwpoison-inject.c
HWPOISON, hugetlb: support hwpoison injection for hugepage
2010-08-11 09:23:11 +02:00
init-mm.c
mm: provide init_mm mm_context initializer
2010-08-09 20:44:54 -07:00
internal.h
mm: export __get_user_pages
2011-03-17 13:08:27 -03:00
Kconfig
mm: compaction: don't depend on HUGETLB_PAGE
2011-01-26 10:50:02 +10:00
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
kmemleak: Allow kmemleak metadata allocations to fail
2011-01-27 18:32:06 +00:00
ksm.c
mm: rename drop_anon_vma() to put_anon_vma()
2011-03-22 17:44:03 -07:00
maccess.c
MN10300: Save frame pointer in thread_info struct rather than global var
2010-10-27 17:29:01 +01:00
madvise.c
thp: khugepaged: make khugepaged aware about madvise
2011-01-13 17:32:47 -08:00
Makefile
bootmem: Separate out CONFIG_NO_BOOTMEM code into nobootmem.c
2011-02-24 14:43:05 +01:00
memblock.c
mm/memblock: properly handle overlaps and fix error path
2011-03-22 17:44:09 -07:00
memcontrol.c
memcg: fix leak on wrong LRU with FUSE
2011-03-23 19:46:33 -07:00
memory_hotplug.c
Merge branch 'slub/hotplug' into slab/urgent
2011-01-15 13:28:17 +02:00
memory-failure.c
mm: change __remove_from_page_cache()
2011-03-22 17:44:02 -07:00
memory.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2011-03-23 20:51:42 -07:00
mempolicy.c
mempolicy: remove redundant check in __mpol_equal()
2011-03-22 17:44:04 -07:00
mempool.c
mm: remove broken 'kzalloc' mempool
2009-09-22 07:17:35 -07:00
migrate.c
memcg: fix ugly initialization of return value is in caller
2011-03-23 19:46:22 -07:00
mincore.c
thp: mincore transparent hugepage support
2011-01-13 17:32:44 -08:00
mlock.c
mm: arch: make get_gate_vma take an mm_struct instead of a task_struct
2011-03-23 16:36:54 -04:00
mm_init.c
…
mmap.c
brk: fix min_brk lower bound computation for COMPAT_BRK
2011-01-13 17:32:48 -08:00
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: fix possible cause of a page_mapped BUG
2011-02-23 21:55:06 -08:00
msync.c
sanitize vfs_fsync calling conventions
2010-05-21 18:31:21 -04:00
nobootmem.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
nommu.c
mm: arch: rename in_gate_area_no_task to in_gate_area_no_mm
2011-03-23 16:36:55 -04:00
oom_kill.c
memcg: give current access to memory reserves if it's trying to die
2011-03-23 19:46:33 -07:00
page_alloc.c
memcg: add memcg sanity checks at allocating and freeing pages
2011-03-23 19:46:25 -07:00
page_cgroup.c
memcg: page_cgroup array is never stored on reserved pages
2011-03-23 19:46:33 -07:00
page_io.c
block: unify flags for struct bio and struct request
2010-08-07 18:20:39 +02:00
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
writeback: make mapping->writeback_index to point to the last written page
2011-03-22 17:44:09 -07:00
pagewalk.c
pagewalk: only split huge pages when necessary
2011-03-22 17:44:04 -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-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2011-01-13 10:05:56 -08:00
pgtable-generic.c
mm/pgtable-generic.c: fix CONFIG_SWAP=n build
2011-01-26 10:49:58 +10:00
prio_tree.c
…
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.c: fix comment
2010-05-25 08:07:00 -07:00
rmap.c
mm: simplify anon_vma refcounts
2011-03-22 17:44:03 -07:00
shmem.c
shmem: let shared anonymous be nonlinear again
2011-03-22 17:44:09 -07:00
slab.c
mm: notifier_from_errno() cleanup
2011-03-22 17:44:01 -07:00
slob.c
mm: Remove support for kmem_cache_name()
2011-01-23 21:00:05 +02:00
slub.c
SLUB: Write to per cpu data when allocating it
2011-03-24 21:53:07 +02:00
sparse-vmemmap.c
tree-wide: fix comment/printk typos
2010-11-01 15:38:34 -04:00
sparse.c
thp: remove PG_buddy
2011-01-13 17:32:43 -08:00
swap_state.c
thp: split_huge_page paging
2011-01-13 17:32:41 -08:00
swap.c
mm: simplify code of swap.c
2011-03-22 17:44:09 -07:00
swapfile.c
memcg: fix ugly initialization of return value is in caller
2011-03-23 19:46:22 -07:00
thrash.c
mm: pass mm to grab_swap_token
2009-06-23 12:50:05 -07:00
truncate.c
mm: deactivate invalidated pages
2011-03-22 17:44:03 -07:00
util.c
kernel: kmem_ptr_validate considered harmful
2011-01-07 17:50:16 +11:00
vmalloc.c
vmalloc: remove confusing comment on vwrite()
2011-03-22 17:44:09 -07:00
vmscan.c
mm: vmscan: kswapd should not free an excessive number of pages when balancing small zones
2011-03-22 17:44:04 -07:00
vmstat.c
mm: add __GFP_OTHER_NODE flag
2011-03-22 17:44:05 -07:00