Commit 0936629f authored Jun 11, 2013 by Viresh Kumar Committed by Ingo Molnar Jun 19, 2013

sched: Use cached value of span instead of calling sched_domain_span()

In the beginning of build_sched_groups() we called sched_domain_span() and
cached its return value in span. Few statements later we are calling it again to
get the same pointer.

Lets use the cached value instead as it hasn't changed in between.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/834ecd507071ad88aff039352dbc7e063dd996a7.1370948150.git.viresh.kumar@linaro.org

Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent 27723a68

kernel/sched/core.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -5347,7 +5347,7 @@ build_sched_groups(struct sched_domain *sd, int cpu)
		get_group(cpu, sdd, &sd->groups);
		atomic_inc(&sd->groups->ref);

		if (cpu != cpumask_first(sched_domain_span(sd)))
		if (cpu != cpumask_first(span))
		return 0;

		lockdep_assert_held(&sched_domains_mutex);