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tick/sched: Add function description for tick_nohz_next_event()

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The return value of tick_nohz_next_event() is not obvious at the first
glance. Add a kernel-doc compatible function description which also covers
return values.

Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240123164702.55612-4-anna-maria@linutronix.de
This commit is contained in:
Anna-Maria Behnsen 2024-01-23 17:46:57 +01:00 committed by Thomas Gleixner
parent ca2768bbf5
commit f365d05506
1 changed files with 10 additions and 0 deletions
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10
kernel/time/tick-sched.c
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@ -799,6 +799,16 @@ static inline bool local_timer_softirq_pending(void)
return local_softirq_pending() & BIT(TIMER_SOFTIRQ);
}
/**
* tick_nohz_next_event() - return the clock monotonic based next event
* @ts: pointer to tick_sched struct
* @cpu: CPU number
*
* Return:
* *%0 - When the next event is a maximum of TICK_NSEC in the future
* and the tick is not stopped yet
* *%next_event - Next event based on clock monotonic
*/
static ktime_t tick_nohz_next_event(struct tick_sched *ts, int cpu)
{
u64 basemono, next_tick, delta, expires;