cgroups: add cpu_relax() calls in css_tryget() and cgroup_clear_css_refs()

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css_tryget() and cgroup_clear_css_refs() contain polling loops; these
loops should have cpu_relax calls in them to reduce cross-cache traffic.

Signed-off-by: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Paul Menage 2009-01-29 14:25:21 -08:00 • committed by Linus Torvalds

parent 1404f06565

commit 804b3c28a4

2 changed files with 6 additions and 2 deletions

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kernel/cgroup.c

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