hrtimer: Use cpu_base->active_base for hotpath iterators
authorThomas Gleixner <tglx@linutronix.de>
Tue, 14 Apr 2015 21:08:41 +0000 (21:08 +0000)
committerThomas Gleixner <tglx@linutronix.de>
Wed, 22 Apr 2015 15:06:49 +0000 (17:06 +0200)
commit34aee88a02ba296a8e8c9523cdf77147731903f1
treec43d1d79dd716ca62010d19d75a9479ef18d575d
parente19ffe8be2cd0a1f726b235443eba21e64f6be5e
hrtimer: Use cpu_base->active_base for hotpath iterators

The active_bases field is guaranteed to be in sync with the timerqueue
of the corresponding clock base. So we can use it for iterating over
the clock bases. This allows to break out early if no more active
clock bases are available and avoids touching the cache lines of
inactive clock bases.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/20150414203501.322887675@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
kernel/time/hrtimer.c