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| author | Lukasz Luba <l.luba@partner.samsung.com> | 2019-02-18 19:21:09 +0100 |
|---|---|---|
| committer | MyungJoo Ham <myungjoo.ham@samsung.com> | 2019-04-16 09:29:18 +0900 |
| commit | cf451adfa392bd9ba36f31659dbe6a5010b46ef9 (patch) | |
| tree | 8b69be5eb3ee8aaaf9212ab565b2333f3ce6b261 /drivers/devfreq | |
| parent | 1be0730f1dcd2971db4d2fe5497a20f438b837a7 (diff) | |
| download | lwn-cf451adfa392bd9ba36f31659dbe6a5010b46ef9.tar.gz lwn-cf451adfa392bd9ba36f31659dbe6a5010b46ef9.zip | |
PM / devfreq: add tracing for scheduling work
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>
Diffstat (limited to 'drivers/devfreq')
| -rw-r--r-- | drivers/devfreq/devfreq.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 8928383a1fa1..6b6991f0e873 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -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); } /** |