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authorViresh Kumar <viresh.kumar@linaro.org>2020-01-20 11:29:05 +0530
committerIngo Molnar <mingo@kernel.org>2020-01-20 08:03:39 +0100
commitafa70d941f663c69c9a64ec1021bbcfa82f0e54a (patch)
treed1b31b36ae61f7143fb85c0a377bd33d474eb2ef
parentccf74128d66ce937876184ad55db2e0276af08d3 (diff)
sched/fair: Define sched_idle_cpu() only for SMP configurations
sched_idle_cpu() isn't used for non SMP configuration and with a recent change, we have started getting following warning: kernel/sched/fair.c:5221:12: warning: ‘sched_idle_cpu’ defined but not used [-Wunused-function] Fix that by defining sched_idle_cpu() only for SMP configurations. Fixes: 323af6deaf70 ("sched/fair: Load balance aggressively for SCHED_IDLE CPUs") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Juri Lelli <juri.lelli@redhat.com> Cc: Vincent Guittot <vincent.guittot@linaro.org> Cc: Dietmar Eggemann <dietmar.eggemann@arm.com> Link: https://lore.kernel.org/r/f0554f590687478b33914a4aff9f0e6a62886d44.1579499907.git.viresh.kumar@linaro.org
-rw-r--r--kernel/sched/fair.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index ebf50955fe8a..fe4e0d775375 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5218,10 +5218,12 @@ static int sched_idle_rq(struct rq *rq)
rq->nr_running);
}
+#ifdef CONFIG_SMP
static int sched_idle_cpu(int cpu)
{
return sched_idle_rq(cpu_rq(cpu));
}
+#endif
/*
* The enqueue_task method is called before nr_running is