[PATCH 1/1] sched/rt: add rt throttled/unthrottled log
From: Jing-Ting Wu <hidden>
Date: 2020-09-08 09:06:04
Also in:
linux-mediatek, lkml
Subsystem:
scheduler, the rest · Maintainers:
Ingo Molnar, Peter Zijlstra, Juri Lelli, Vincent Guittot, Linus Torvalds
Always print logs when rt throttle/unthrottle, it is much easier to locate the throttled period. Signed-off-by: Jing-Ting Wu <redacted> --- kernel/sched/rt.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index f215eea..598046c 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c@@ -902,6 +902,9 @@ static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun) rt_rq->rt_throttled = 0; enqueue = 1; + printk_deferred("sched: RT throttling inactivated cpu=%d\n", + i); + /* * When we're idle and a woken (rt) task is * throttled check_preempt_curr() will set
@@ -970,7 +973,7 @@ static int sched_rt_runtime_exceeded(struct rt_rq *rt_rq) */ if (likely(rt_b->rt_runtime)) { rt_rq->rt_throttled = 1; - printk_deferred_once("sched: RT throttling activated\n"); + printk_deferred("sched: RT throttling activated\n"); } else { /* * In case we did anyway, make it go away,
--
1.7.9.5
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