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| author | Matthias Kaehlcke <mka@chromium.org> | 2020-10-07 22:03:59 +0900 |
|---|---|---|
| committer | Chanwoo Choi <cw00.choi@samsung.com> | 2020-10-26 10:52:37 +0900 |
| commit | cab477d0d4fbae1ed68d3db0b52cb5449a3c5868 (patch) | |
| tree | 2dc9a7a20020327208af08ef50e32160bccb856d /include/trace | |
| parent | b4365423bb7adf9feb4659126eaec374dfbde806 (diff) | |
| download | linux-stable-cab477d0d4fbae1ed68d3db0b52cb5449a3c5868.tar.gz linux-stable-cab477d0d4fbae1ed68d3db0b52cb5449a3c5868.tar.bz2 linux-stable-cab477d0d4fbae1ed68d3db0b52cb5449a3c5868.zip | |
PM / devfreq: Add tracepoint for frequency changes
Add a tracepoint for frequency changes of devfreq devices and
use it.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
[cw00.choi: Move print position of tracepoint and add more information]
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/devfreq.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/trace/events/devfreq.h b/include/trace/events/devfreq.h index bd36d28d16bc..7627c620bbda 100644 --- a/include/trace/events/devfreq.h +++ b/include/trace/events/devfreq.h @@ -8,6 +8,34 @@ #include <linux/devfreq.h> #include <linux/tracepoint.h> +TRACE_EVENT(devfreq_frequency, + TP_PROTO(struct devfreq *devfreq, unsigned long freq, + unsigned long prev_freq), + + TP_ARGS(devfreq, freq, prev_freq), + + TP_STRUCT__entry( + __string(dev_name, dev_name(&devfreq->dev)) + __field(unsigned long, freq) + __field(unsigned long, prev_freq) + __field(unsigned long, busy_time) + __field(unsigned long, total_time) + ), + + TP_fast_assign( + __assign_str(dev_name, dev_name(&devfreq->dev)); + __entry->freq = freq; + __entry->prev_freq = prev_freq; + __entry->busy_time = devfreq->last_status.busy_time; + __entry->total_time = devfreq->last_status.total_time; + ), + + TP_printk("dev_name=%-30s freq=%-12lu prev_freq=%-12lu load=%-2lu", + __get_str(dev_name), __entry->freq, __entry->prev_freq, + __entry->total_time == 0 ? 0 : + (100 * __entry->busy_time) / __entry->total_time) +); + TRACE_EVENT(devfreq_monitor, TP_PROTO(struct devfreq *devfreq), |