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1be0730f1d
The patch adds a new file for with trace events for devfreq framework. They are used for performance analysis of the framework. It also contains updates in MAINTAINERS file adding new entry for devfreq maintainers. 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>
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM devfreq
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#if !defined(_TRACE_DEVFREQ_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_DEVFREQ_H
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#include <linux/devfreq.h>
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#include <linux/tracepoint.h>
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TRACE_EVENT(devfreq_monitor,
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TP_PROTO(struct devfreq *devfreq),
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TP_ARGS(devfreq),
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TP_STRUCT__entry(
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__field(unsigned long, freq)
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__field(unsigned long, busy_time)
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__field(unsigned long, total_time)
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__field(unsigned int, polling_ms)
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__string(dev_name, dev_name(&devfreq->dev))
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),
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TP_fast_assign(
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__entry->freq = devfreq->previous_freq;
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__entry->busy_time = devfreq->last_status.busy_time;
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__entry->total_time = devfreq->last_status.total_time;
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__entry->polling_ms = devfreq->profile->polling_ms;
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__assign_str(dev_name, dev_name(&devfreq->dev));
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),
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TP_printk("dev_name=%s freq=%lu polling_ms=%u load=%lu",
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__get_str(dev_name), __entry->freq, __entry->polling_ms,
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__entry->total_time == 0 ? 0 :
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(100 * __entry->busy_time) / __entry->total_time)
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);
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#endif /* _TRACE_DEVFREQ_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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