diff options
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/hrtimer.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index 4b0507cf38ea..a5ef67edcda9 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -1535,6 +1535,11 @@ static inline int hrtimer_clockid_to_base(clockid_t clock_id) return HRTIMER_BASE_MONOTONIC; } +static enum hrtimer_restart hrtimer_dummy_timeout(struct hrtimer *unused) +{ + return HRTIMER_NORESTART; +} + static void __hrtimer_init(struct hrtimer *timer, clockid_t clock_id, enum hrtimer_mode mode) { @@ -1571,6 +1576,18 @@ static void __hrtimer_init(struct hrtimer *timer, clockid_t clock_id, timerqueue_init(&timer->node); } +static void __hrtimer_setup(struct hrtimer *timer, + enum hrtimer_restart (*function)(struct hrtimer *), + clockid_t clock_id, enum hrtimer_mode mode) +{ + __hrtimer_init(timer, clock_id, mode); + + if (WARN_ON_ONCE(!function)) + timer->function = hrtimer_dummy_timeout; + else + timer->function = function; +} + /** * hrtimer_init - initialize a timer to the given clock * @timer: the timer to be initialized @@ -1592,6 +1609,27 @@ void hrtimer_init(struct hrtimer *timer, clockid_t clock_id, EXPORT_SYMBOL_GPL(hrtimer_init); /** + * hrtimer_setup - initialize a timer to the given clock + * @timer: the timer to be initialized + * @function: the callback function + * @clock_id: the clock to be used + * @mode: The modes which are relevant for initialization: + * HRTIMER_MODE_ABS, HRTIMER_MODE_REL, HRTIMER_MODE_ABS_SOFT, + * HRTIMER_MODE_REL_SOFT + * + * The PINNED variants of the above can be handed in, + * but the PINNED bit is ignored as pinning happens + * when the hrtimer is started + */ +void hrtimer_setup(struct hrtimer *timer, enum hrtimer_restart (*function)(struct hrtimer *), + clockid_t clock_id, enum hrtimer_mode mode) +{ + debug_init(timer, clock_id, mode); + __hrtimer_setup(timer, function, clock_id, mode); +} +EXPORT_SYMBOL_GPL(hrtimer_setup); + +/** * hrtimer_init_on_stack - initialize a timer in stack memory * @timer: The timer to be initialized * @clock_id: The clock to be used |