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(parent: 6760bca) | patch
perf, cpu hotplug: Use cached value of smp_processor_id()
authorSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Tue, 16 Oct 2012 07:58:17 +0000 (13:28 +0530)
committerIngo Molnar <mingo@kernel.org>
Wed, 24 Oct 2012 08:01:59 +0000 (10:01 +0200)
commitc13d38e4a1fd5dd07135403c613c8091af444169
tree85bdc667286f9c9d4437c2020f2dd0d60a8f2c89tree | snapshot
parent6760bca9fd16256210f4922a3e9f067d2c7017d7commit | diff
perf, cpu hotplug: Use cached value of smp_processor_id()

The perf_cpu_notifier() macro invokes smp_processor_id()
multiple times. Optimize it by using a local variable.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: peterz@infradead.org
Cc: acme@ghostprotocols.net
Link: http://lkml.kernel.org/r/20121016075817.3572.76733.stgit@srivatsabhat.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
include/linux/perf_event.h diff | blob | history
Domain: System / Kernel;