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timers: Simplify code in run_local_timers() 

The logic for raising a softirq the way it is implemented right now, is
readable for two timer bases. When increasing the number of timer bases,
code gets harder to read. With the introduction of the timer migration
hierarchy, there will be three timer bases.

Therefore restructure the code to use a loop. No functional change.

Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20240221090548.36600-9-anna-maria@linutronix.de
This commit is contained in:
Anna-Maria Behnsen 2024-02-21 10:05:36 +01:00 committed by Thomas Gleixner
parent aae55e9fb8
commit af68cb3fc7
1 changed files with 6 additions and 8 deletions
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14
kernel/time/timer.c
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@ -2180,16 +2180,14 @@ static void run_local_timers(void)
struct timer_base *base = this_cpu_ptr(&timer_bases[BASE_STD]);
hrtimer_run_queues();
/* Raise the softirq only if required. */
if (time_before(jiffies, base->next_expiry)) {
if (!IS_ENABLED(CONFIG_NO_HZ_COMMON))
return;
/* CPU is awake, so check the deferrable base. */
base++;
if (time_before(jiffies, base->next_expiry))
for (int i = 0; i < NR_BASES; i++, base++) {
/* Raise the softirq only if required. */
if (time_after_eq(jiffies, base->next_expiry)) {
raise_softirq(TIMER_SOFTIRQ);
return;
}
}
raise_softirq(TIMER_SOFTIRQ);
}
/*