tracing: Use __this_cpu_inc/dec operation instead of __get_cpu_var

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__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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Shan Wei 2012-11-19 13:21:01 +08:00 • committed by Steven Rostedt

parent d75f717e19

commit 821465295b

1 changed files with 2 additions and 2 deletions

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kernel/trace/trace.c

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