tree d068bd6a075cd85c64a040cf9fc8e661f8be00a8
parent 74f8e4b2335de45485b8d5b31a504747f13c8070
author Peter Zijlstra <a.p.zijlstra@chello.nl> 1302017028 +0200
committer Ingo Molnar <mingo@elte.hu> 1302763957 +0200

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

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>