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| author | Todd Poynor <toddpoynor@google.com> | 2013-05-15 14:38:11 -0700 |
|---|---|---|
| committer | John Stultz <john.stultz@linaro.org> | 2013-05-29 12:57:34 -0700 |
| commit | 6cffe00f7d4e24679eae6b7aae4caaf915288256 (patch) | |
| tree | 3613480b8eefec8b865ba9d3acbb8ecb7ffe4def /include | |
| parent | 3565184ed0c1ea46bea5b792da5f72a83c43e49b (diff) | |
| download | linux-6cffe00f7d4e24679eae6b7aae4caaf915288256.tar.gz linux-6cffe00f7d4e24679eae6b7aae4caaf915288256.tar.xz | |
alarmtimer: Add functions for timerfd support
Add functions needed for hooking up alarmtimer to timerfd:
* alarm_restart: Similar to hrtimer_restart, restart an alarmtimer after
the expires time has already been updated (as with alarm_forward).
* alarm_forward_now: Similar to hrtimer_forward_now, move the expires
time forward to an interval from the current time of the associated clock.
* alarm_start_relative: Start an alarmtimer with an expires time relative to
the current time of the associated clock.
* alarm_expires_remaining: Similar to hrtimer_expires_remaining, return the
amount of time remaining until alarm expiry.
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/alarmtimer.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/alarmtimer.h b/include/linux/alarmtimer.h index 9069694e70eb..a899402a5a0e 100644 --- a/include/linux/alarmtimer.h +++ b/include/linux/alarmtimer.h @@ -44,10 +44,14 @@ struct alarm { void alarm_init(struct alarm *alarm, enum alarmtimer_type type, enum alarmtimer_restart (*function)(struct alarm *, ktime_t)); int alarm_start(struct alarm *alarm, ktime_t start); +int alarm_start_relative(struct alarm *alarm, ktime_t start); +void alarm_restart(struct alarm *alarm); int alarm_try_to_cancel(struct alarm *alarm); int alarm_cancel(struct alarm *alarm); u64 alarm_forward(struct alarm *alarm, ktime_t now, ktime_t interval); +u64 alarm_forward_now(struct alarm *alarm, ktime_t interval); +ktime_t alarm_expires_remaining(const struct alarm *alarm); /* Provide way to access the rtc device being used by alarmtimers */ struct rtc_device *alarmtimer_get_rtcdev(void); |