[PATCH v5 07/18] timers: Ease code in run_local_timers()

Anna-Maria Behnsen
2023-03-01T14:19:04Z

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

Therefore ease the code. No functional change.

Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
---
v5: New patch to decrease patch size of follow up patches
---
kernel/time/timer.c | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index d74d538e06a2..d3e1776b505b 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -2058,16 +2058,14 @@ 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);
}

/*
--
2.30.2