mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
cab477d0d4
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>
68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM devfreq
|
|
|
|
#if !defined(_TRACE_DEVFREQ_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_DEVFREQ_H
|
|
|
|
#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),
|
|
|
|
TP_ARGS(devfreq),
|
|
|
|
TP_STRUCT__entry(
|
|
__field(unsigned long, freq)
|
|
__field(unsigned long, busy_time)
|
|
__field(unsigned long, total_time)
|
|
__field(unsigned int, polling_ms)
|
|
__string(dev_name, dev_name(&devfreq->dev))
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->freq = devfreq->previous_freq;
|
|
__entry->busy_time = devfreq->last_status.busy_time;
|
|
__entry->total_time = devfreq->last_status.total_time;
|
|
__entry->polling_ms = devfreq->profile->polling_ms;
|
|
__assign_str(dev_name, dev_name(&devfreq->dev));
|
|
),
|
|
|
|
TP_printk("dev_name=%-30s freq=%-12lu polling_ms=%-3u load=%-2lu",
|
|
__get_str(dev_name), __entry->freq, __entry->polling_ms,
|
|
__entry->total_time == 0 ? 0 :
|
|
(100 * __entry->busy_time) / __entry->total_time)
|
|
);
|
|
#endif /* _TRACE_DEVFREQ_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|