sched: Deal with non-atomic min_vruntime reads on 32bits

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In order to avoid reading partial updated min_vruntime values on 32bit
implement a seqcount like solution.

Reviewed-by: Frank Rowand <frank.rowand@am.sony.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20110405152729.111378493@chello.nl
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Peter Zijlstra 2011-04-05 17:23:48 +02:00 • committed by Ingo Molnar

parent 74f8e4b233

commit 3fe1698b7f

2 changed files with 20 additions and 2 deletions

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3

kernel/sched.c

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19

kernel/sched_fair.c

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