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authorLukasz Luba <l.luba@partner.samsung.com>2019-02-18 21:21:09 +0300
committerMyungJoo Ham <myungjoo.ham@samsung.com>2019-04-16 03:29:18 +0300
commitcf451adfa392bd9ba36f31659dbe6a5010b46ef9 (patch)
tree8b69be5eb3ee8aaaf9212ab565b2333f3ce6b261 /drivers/devfreq
parent1be0730f1dcd2971db4d2fe5497a20f438b837a7 (diff)
downloadlinux-cf451adfa392bd9ba36f31659dbe6a5010b46ef9.tar.xz
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.c5
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);
}
/**