cpufreq: Add mechanism for registering utilization update callbacks

[deliverable/linux.git] / kernel / sched / rt.c

diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index 8ec86abe0ea188369ee4e7efd21789d8cb127c14..27f5b03cbdbedcc90123d6211ea908374ce0d78a 100644 (file)
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -945,6 +945,10 @@ static void update_curr_rt(struct rq *rq)
        if (curr->sched_class != &rt_sched_class)
                return;
 
+       /* Kick cpufreq (see the comment in linux/cpufreq.h). */
+       if (cpu_of(rq) == smp_processor_id())
+               cpufreq_trigger_update(rq_clock(rq));
+
        delta_exec = rq_clock_task(rq) - curr->se.exec_start;
        if (unlikely((s64)delta_exec <= 0))
                return;