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| author |   Andrew Morton <akpm@linux-foundation.org> | 2009-09-19 11:55:44 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-09-20 20:00:32 +0200 |
| commit | 89f19f04dc72363d912fd007a399cb10310eff6e (patch) | |
| tree | daa64e5de98a668eed4a2ceeb6ca95c478be4053 /fs/proc/array.c | |
| parent | sched: Re-add lost cpu_allowed check to sched_fair.c::select_task_rq_fair() (diff) | |
| download | linux-dev-89f19f04dc72363d912fd007a399cb10310eff6e.tar.xz linux-dev-89f19f04dc72363d912fd007a399cb10310eff6e.zip | |
sched: Fix raciness in runqueue_is_locked()
runqueue_is_locked() is unavoidably racy due to a poor interface design.
It does
cpu = get_cpu()
ret = some_perpcu_thing(cpu);
put_cpu(cpu);
return ret;
Its return value is unreliable.
Fix.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <200909191855.n8JItiko022148@imap1.linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/proc/array.c')
0 files changed, 0 insertions, 0 deletions