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Tang Chen 5f7865f3e4 sched: Ensure 'sched_domains_numa_levels' is safe to use in other functions

We should temporarily reset 'sched_domains_numa_levels' to 0 after
it is reset to 'level' in sched_init_numa(). If it fails to allocate
memory for array sched_domains_numa_masks[][], the array will contain
less then 'level' members. This could be dangerous when we use it to
iterate array sched_domains_numa_masks[][] in other functions.

This patch set sched_domains_numa_levels to 0 before initializing
array sched_domains_numa_masks[][], and reset it to 'level' when
sched_domains_numa_masks[][] is fully initialized.

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1348578751-16904-2-git-send-email-tangchen@cn.fujitsu.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2012-10-05 13:54:46 +02:00

auto_group.c

sched: Clean up parameter passing of proc_sched_autogroup_set_nice()

2012-03-02 12:23:49 +01:00

auto_group.h

…

clock.c

…

core.c

sched: Ensure 'sched_domains_numa_levels' is safe to use in other functions

2012-10-05 13:54:46 +02:00

cpupri.c