From: Shan Wei <davidshan@tencent.com>
Date: Mon, 19 Nov 2012 05:21:01 +0000 (+0800)
Subject: tracing: Use __this_cpu_inc/dec operation instead of __get_cpu_var
X-Git-Tag: v3.9-rc1~173^2~10^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=821465295b36136998ef294fe176fba4e09c1cd9;p=pandora-kernel.git

tracing: Use __this_cpu_inc/dec operation instead of __get_cpu_var

__this_cpu_inc_return() or __this_cpu_dec generates a single instruction,
which is faster than __get_cpu_var operation.

Link: http://lkml.kernel.org/r/50A9C1BD.1060308@gmail.com

Reviewed-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Shan Wei <davidshan@tencent.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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