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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 */
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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_frequency,
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TP_PROTO(struct devfreq *devfreq, unsigned long freq,
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unsigned long prev_freq),
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TP_ARGS(devfreq, freq, prev_freq),
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TP_STRUCT__entry(
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__string(dev_name, dev_name(&devfreq->dev))
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__field(unsigned long, freq)
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__field(unsigned long, prev_freq)
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__field(unsigned long, busy_time)
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__field(unsigned long, total_time)
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),
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TP_fast_assign(
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__assign_str(dev_name, dev_name(&devfreq->dev));
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__entry->freq = freq;
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__entry->prev_freq = prev_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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),
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TP_printk("dev_name=%-30s freq=%-12lu prev_freq=%-12lu load=%-2lu",
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__get_str(dev_name), __entry->freq, __entry->prev_freq,
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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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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=%-30s freq=%-12lu polling_ms=%-3u load=%-2lu",
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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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