tree 59e0dabb227a5067cfdc7cce13f149f141ef8cb4
parent 1404f06565ee89e0ce04d4a5859c00b0e3a0dc8d
author Paul Menage <menage@google.com> 1233267921 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1233281085 -0800

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

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>