include/trace/events/devfreq.h

Source file repositories/reference/linux-study-clean/include/trace/events/devfreq.h

File Facts

System
Linux kernel
Corpus path
include/trace/events/devfreq.h
Extension
.h
Size
1912 bytes
Lines
69
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

#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);
		__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);
	),

	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>

Annotation

Implementation Notes