From: Lukasz Luba <l.luba@partner.samsung.com>
To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org
Cc: b.zolnierkie@samsung.com, myungjoo.ham@samsung.com,
cw00.choi@samsung.com, kyungmin.park@samsung.com,
m.szyprowski@samsung.com, s.nawrocki@samsung.com,
mka@chromium.org, rostedt@goodmis.org, mingo@redhat.com,
Lukasz Luba <l.luba@partner.samsung.com>
Subject: [PATCH v2 2/2] drivers: devfreq: add tracing for scheduling work
Date: Fri, 15 Feb 2019 14:05:13 +0100 [thread overview]
Message-ID: <1550235913-5189-3-git-send-email-l.luba@partner.samsung.com> (raw)
In-Reply-To: <1550235913-5189-1-git-send-email-l.luba@partner.samsung.com>
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>
---
drivers/devfreq/devfreq.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 0ae3de7..660365a 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);
}
/**
--
2.7.4
next prev parent reply other threads:[~2019-02-15 13:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20190215130554eucas1p25cf99000a8269b845d1056bcc50c9af7@eucas1p2.samsung.com>
2019-02-15 13:05 ` [PATCH v2 0/2] tracing: drivers: devfreq: add basic trace mechanism Lukasz Luba
[not found] ` <CGME20190215130555eucas1p219217e3f1d0901f61be78870df0ecf6d@eucas1p2.samsung.com>
2019-02-15 13:05 ` [PATCH v2 1/2] trace: events: add devfreq trace event file Lukasz Luba
2019-02-18 5:40 ` Chanwoo Choi
2019-02-18 17:57 ` Lukasz Luba
[not found] ` <CGME20190215130555eucas1p297d048d01902e2bb88e6db158d53fd88@eucas1p2.samsung.com>
2019-02-15 13:05 ` Lukasz Luba [this message]
2019-02-18 5:36 ` [PATCH v2 2/2] drivers: devfreq: add tracing for scheduling work Chanwoo Choi
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