diff mbox series

[v8,04/25] timer: Move store of next event into __next_timer_interrupt()

Message ID 20231004123454.15691-5-anna-maria@linutronix.de
State New
Headers
Series timer: Move from a push remote at enqueue to a pull at expiry model |

Commit Message

Anna-Maria Behnsen Oct. 4, 2023, 12:34 p.m. UTC 
  Both call sites of __next_timer_interrupt() store return value directly in
base->next_expiry. Move the store into __next_timer_interrupt() and to make
its purpose more clear, rename function to next_expiry_recalc().

No functional change.

Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
---
v6: Fix typos in commit message and drop not required return as suggested
    by Peter Zijlstra

v4: rename function as suggested by Frederic Weisbecker
---
 kernel/time/timer.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 7d06351aff54..5e17244a9465 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -1800,8 +1800,10 @@  static int next_pending_bucket(struct timer_base *base, unsigned offset,
 /*
  * Search the first expiring timer in the various clock levels. Caller must
  * hold base->lock.
+ *
+ * Store next expiry time in base->next_expiry.
  */
-static unsigned long __next_timer_interrupt(struct timer_base *base)
+static void next_expiry_recalc(struct timer_base *base)
 {
 	unsigned long clk, next, adj;
 	unsigned lvl, offset = 0;
@@ -1867,10 +1869,9 @@  static unsigned long __next_timer_interrupt(struct timer_base *base)
 		clk += adj;
 	}
 
+	base->next_expiry = next;
 	base->next_expiry_recalc = false;
 	base->timers_pending = !(next == base->clk + NEXT_TIMER_MAX_DELTA);
-
-	return next;
 }
 
 #ifdef CONFIG_NO_HZ_COMMON
@@ -1930,7 +1931,7 @@  u64 get_next_timer_interrupt(unsigned long basej, u64 basem)
 
 	raw_spin_lock(&base->lock);
 	if (base->next_expiry_recalc)
-		base->next_expiry = __next_timer_interrupt(base);
+		next_expiry_recalc(base);
 	nextevt = base->next_expiry;
 
 	/*
@@ -2013,7 +2014,7 @@  static inline void __run_timers(struct timer_base *base)
 		WARN_ON_ONCE(!levels && !base->next_expiry_recalc
 			     && base->timers_pending);
 		base->clk++;
-		base->next_expiry = __next_timer_interrupt(base);
+		next_expiry_recalc(base);
 
 		while (levels--)
 			expire_timers(base, heads + levels);