diff options
| author | Lukasz Luba <l.luba@partner.samsung.com> | 2019-02-18 19:21:08 +0100 |
|---|---|---|
| committer | MyungJoo Ham <myungjoo.ham@samsung.com> | 2019-04-16 09:29:18 +0900 |
| commit | 1be0730f1dcd2971db4d2fe5497a20f438b837a7 (patch) | |
| tree | ef19a9f0a43966da893b592060fa82da1deb6cb5 | |
| parent | 9173c5ceb035aab28171cd74dfddf27f47213b99 (diff) | |
trace: events: add devfreq trace event file
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>
| -rw-r--r-- | MAINTAINERS | 1 | ||||
| -rw-r--r-- | include/trace/events/devfreq.h | 40 |
2 files changed, 41 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 3671fdea5010..27ed10966c81 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4552,6 +4552,7 @@ S: Maintained F: drivers/devfreq/ F: include/linux/devfreq.h F: Documentation/devicetree/bindings/devfreq/ +F: include/trace/events/devfreq.h DEVICE FREQUENCY EVENT (DEVFREQ-EVENT) M: Chanwoo Choi <cw00.choi@samsung.com> diff --git a/include/trace/events/devfreq.h b/include/trace/events/devfreq.h new file mode 100644 index 000000000000..cf5b8772175d --- /dev/null +++ b/include/trace/events/devfreq.h @@ -0,0 +1,40 @@ +/* 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_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=%s freq=%lu polling_ms=%u load=%lu", + __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> |