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PM / devfreq: add tracing for scheduling work

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This patch add basic tracing of the devfreq workqueue and delayed work.
It aims to capture changes of the polling intervals and device state.

Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
This commit is contained in:
Lukasz Luba 2019-02-18 19:21:09 +01:00 committed by MyungJoo Ham
parent 1be0730f1d
commit cf451adfa3
1 changed files with 5 additions and 0 deletions
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5
drivers/devfreq/devfreq.c
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@ -29,6 +29,9 @@
#include <linux/of.h>
#include "governor.h"
#define CREATE_TRACE_POINTS
#include <trace/events/devfreq.h>
static struct class *devfreq_class;
/*
@ -394,6 +397,8 @@ static void devfreq_monitor(struct work_struct *work)
queue_delayed_work(devfreq_wq, &devfreq->work,
msecs_to_jiffies(devfreq->profile->polling_ms));
mutex_unlock(&devfreq->lock);
trace_devfreq_monitor(devfreq);
}
/**