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| author | Arve Hjønnevåg <arve@android.com> | 2012-04-29 22:53:02 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-05-01 21:25:25 +0200 |
| commit | 6791e36c4a40e8930e08669e60077eea6770c429 (patch) | |
| tree | 880d7255cc13a270d513e4fb6c4219f85d9536d0 /drivers/base | |
| parent | 30e3ce6dcbe3fc29c343b17e768b07d4a795de21 (diff) | |
| download | linux-6791e36c4a40e8930e08669e60077eea6770c429.tar.gz | |
PM / Sleep: Add wakeup_source_activate and wakeup_source_deactivate tracepoints
Add tracepoints to wakeup_source_activate and wakeup_source_deactivate. Useful for checking that specific wakeup sources overlap as expected. Signed-off-by: Arve Hjønnevåg <arve@android.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/power/wakeup.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c index 7a6eada4534d..1132799421cd 100644 --- a/drivers/base/power/wakeup.c +++ b/drivers/base/power/wakeup.c @@ -14,6 +14,7 @@ #include <linux/suspend.h> #include <linux/seq_file.h> #include <linux/debugfs.h> +#include <trace/events/power.h> #include "power.h" @@ -374,12 +375,16 @@ EXPORT_SYMBOL_GPL(device_set_wakeup_enable); */ static void wakeup_source_activate(struct wakeup_source *ws) { + unsigned int cec; + ws->active = true; ws->active_count++; ws->last_time = ktime_get(); /* Increment the counter of events in progress. */ - atomic_inc(&combined_event_count); + cec = atomic_inc_return(&combined_event_count); + + trace_wakeup_source_activate(ws->name, cec); } /** @@ -454,7 +459,7 @@ EXPORT_SYMBOL_GPL(pm_stay_awake); */ static void wakeup_source_deactivate(struct wakeup_source *ws) { - unsigned int cnt, inpr; + unsigned int cnt, inpr, cec; ktime_t duration; ktime_t now; @@ -489,7 +494,8 @@ static void wakeup_source_deactivate(struct wakeup_source *ws) * Increment the counter of registered wakeup events and decrement the * couter of wakeup events in progress simultaneously. */ - atomic_add(MAX_IN_PROGRESS, &combined_event_count); + cec = atomic_add_return(MAX_IN_PROGRESS, &combined_event_count); + trace_wakeup_source_deactivate(ws->name, cec); split_counters(&cnt, &inpr); if (!inpr && waitqueue_active(&wakeup_count_wait_queue)) |