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Johannes Weiner 609838cfed mm: invoke oom-killer from remaining unconverted page fault handlers 
A few remaining architectures directly kill the page faulting task in an
out of memory situation.  This is usually not a good idea since that
task might not even use a significant amount of memory and so may not be
the optimal victim to resolve the situation.

Since 2.6.29's 1c0fe6e ("mm: invoke oom-killer from page fault") there
is a hook that architecture page fault handlers are supposed to call to
invoke the OOM killer and let it pick the right task to kill.  Convert
the remaining architectures over to this hook.

To have the previous behavior of simply taking out the faulting task the
vm.oom_kill_allocating_task sysctl can be set to 1.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>   [arch/arc bits]
Cc: James Hogan <james.hogan@imgtec.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2013-07-09 10:33:20 -07:00
..
configs md: remove CONFIG_MULTICORE_RAID456 entirely 2013-03-20 13:21:14 +11:00
gxio arch/tile: provide kernel support for the tilegx USB shim 2012-07-18 16:40:24 -04:00
include tile: normalize global variables exported by vmlinux.lds 2013-07-03 16:07:34 -07:00
kernel mm/tile: prepare for removing num_physpages and simplify mem_init() 2013-07-03 16:07:37 -07:00
kvm arch/tile/kvm: remove depends on CONFIG_EXPERIMENTAL 2013-01-17 12:11:26 -08:00
lib tilepro: work around module link error with gcc 4.7 2013-06-15 16:47:47 -04:00
mm mm: invoke oom-killer from remaining unconverted page fault handlers 2013-07-09 10:33:20 -07:00
Kbuild arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
Kconfig consolidate per-arch stack overflow debugging options 2013-07-04 11:25:39 -07:00
Kconfig.debug consolidate per-arch stack overflow debugging options 2013-07-04 11:25:39 -07:00
Makefile arch/tile: avoid generating .eh_frame information in modules 2012-10-23 10:21:43 -04:00