David Rientjes 29423e77c0 oom: suppress show_mem() for many nodes in irq context on page alloc failure ... When a page allocation failure occurs, show_mem() is called to dump the state of the VM so users may understand what happened to get into that condition. This output, however, can be extremely verbose. In irq context, it may result in significant delays that incur NMI watchdog timeouts when the machine is large (we use CONFIG_NODES_SHIFT > 8 here to define a "large" machine since the length of the show_mem() output is proportional to the number of possible nodes). This patch suppresses the show_mem() call in irq context when the kernel has CONFIG_NODES_SHIFT > 8. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2011-03-22 17:44:01 -07:00
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backing-dev.c
bootmem.c
bounce.c
compaction.c	mm/compaction: check migrate_pages's return value instead of list_empty()	2011-03-22 17:44:00 -07:00
debug-pagealloc.c
dmapool.c
fadvise.c
failslab.c
filemap_xip.c
filemap.c
fremap.c
highmem.c
huge_memory.c
hugetlb.c
hwpoison-inject.c
init-mm.c
internal.h
Kconfig
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c
maccess.c
madvise.c
Makefile
memblock.c
memcontrol.c
memory_hotplug.c
memory-failure.c
memory.c
mempolicy.c
mempool.c
migrate.c
mincore.c
mlock.c
mm_init.c
mmap.c
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
msync.c
nobootmem.c
nommu.c
oom_kill.c	oom: suppress nodes that are not allowed from meminfo on oom kill	2011-03-22 17:44:01 -07:00
page_alloc.c	oom: suppress show_mem() for many nodes in irq context on page alloc failure	2011-03-22 17:44:01 -07:00
page_cgroup.c
page_io.c
page_isolation.c
page-writeback.c
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c
pgtable-generic.c
prio_tree.c
quicklist.c
readahead.c
rmap.c
shmem.c
slab.c
slob.c
slub.c
sparse-vmemmap.c
sparse.c
swap_state.c
swap.c
swapfile.c	mm: swap: unlock swapfile inode mutex before closing file on bad swapfiles	2011-03-22 17:43:58 -07:00
thrash.c
truncate.c
util.c
vmalloc.c	mm: vmap area cache	2011-03-22 17:44:00 -07:00
vmscan.c	mm: compaction: prevent kswapd compacting memory to reduce CPU usage	2011-03-22 17:44:00 -07:00
vmstat.c