K 10
svn:author
V 9
jimharris
K 8
svn:date
V 27
2012-08-29T01:04:12.440479Z
K 7
svn:log
V 428
MFC r239591:

Remove unncessary atomic operation when reading process flags in
PMC_PROC_IS_USING_PMCS macro.

Invocations of this macro are not synchronized with setting/clearing
of P_HWPMC flag, so the atomic operation here isn't needed.  Removing
the atomic operation provides noticeable improvement (5-6%) on
some scheduler-intensive workloads with HWPMC_HOOKS enabled on an
8C Sandy Bridge Xeon system.

Sponsored by:	Intel

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