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>

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 547b7d3ff8931c0903008bb8965e066799c67aeb..3388387e1330605644a436cf3d8e4345641527db 100644 (file)
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -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);