perf_counter: more barrier in blank weak function

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Impact: fix panic possible panic

Some versions of GCC inline the weak global function if it's empty.
Add a barrier() to work it around.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Yinghai Lu 2008-12-26 21:05:06 -08:00 • committed by Ingo Molnar

parent e44aef58ec

commit 01ea1ccaa2

1 changed files with 2 additions and 2 deletions

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kernel/perf_counter.c

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