diff options
| author | Todd E Brandt <todd.e.brandt@linux.intel.com> | 2014-06-06 05:40:17 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-06-07 00:18:07 +0200 |
| commit | bb3632c6101b2fad07e6246721466b984b1e0e9d (patch) | |
| tree | 1f5755a94c7dfe2b2051411e0f08620b398a9059 /include/trace | |
| parent | 3eba148d75670f61463dd3c9ef8672da8f290f36 (diff) | |
| download | linux-0-day-bb3632c6101b2fad07e6246721466b984b1e0e9d.tar.gz linux-0-day-bb3632c6101b2fad07e6246721466b984b1e0e9d.tar.xz | |
PM / sleep: trace events for suspend/resume
Adds trace events that give finer resolution into suspend/resume. These
events are graphed in the timelines generated by the analyze_suspend.py
script. They represent large areas of time consumed that are typical to
suspend and resume.
The event is triggered by calling the function "trace_suspend_resume"
with three arguments: a string (the name of the event to be displayed
in the timeline), an integer (case specific number, such as the power
state or cpu number), and a boolean (where true is used to denote the start
of the timeline event, and false to denote the end).
The suspend_resume trace event reproduces the data that the machine_suspend
trace event did, so the latter has been removed.
Signed-off-by: Todd Brandt <todd.e.brandt@intel.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/power.h | 42 |
1 files changed, 25 insertions, 17 deletions
diff --git a/include/trace/events/power.h b/include/trace/events/power.h index 9a7e08d612581..f88c8573e66c5 100644 --- a/include/trace/events/power.h +++ b/include/trace/events/power.h @@ -7,6 +7,9 @@ #include <linux/ktime.h> #include <linux/pm_qos.h> #include <linux/tracepoint.h> +#include <linux/ftrace_event.h> + +#define TPS(x) tracepoint_string(x) DECLARE_EVENT_CLASS(cpu, @@ -97,23 +100,6 @@ DEFINE_EVENT(cpu, cpu_frequency, TP_ARGS(frequency, cpu_id) ); -TRACE_EVENT(machine_suspend, - - TP_PROTO(unsigned int state), - - TP_ARGS(state), - - TP_STRUCT__entry( - __field( u32, state ) - ), - - TP_fast_assign( - __entry->state = state; - ), - - TP_printk("state=%lu", (unsigned long)__entry->state) -); - TRACE_EVENT(device_pm_report_time, TP_PROTO(struct device *dev, const char *pm_ops, s64 ops_time, @@ -151,6 +137,28 @@ TRACE_EVENT(device_pm_report_time, __entry->ops_time, __entry->error) ); +TRACE_EVENT(suspend_resume, + + TP_PROTO(const char *action, int val, bool start), + + TP_ARGS(action, val, start), + + TP_STRUCT__entry( + __field(const char *, action) + __field(int, val) + __field(bool, start) + ), + + TP_fast_assign( + __entry->action = action; + __entry->val = val; + __entry->start = start; + ), + + TP_printk("%s[%u] %s", __entry->action, (unsigned int)__entry->val, + (__entry->start)?"begin":"end") +); + DECLARE_EVENT_CLASS(wakeup_source, TP_PROTO(const char *name, unsigned int state), |