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From: Anna-Maria Behnsen <anna-maria@linutronix.de>
To: linux-kernel@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>,
	John Stultz <jstultz@google.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Eric Dumazet <edumazet@google.com>,
	"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
	Arjan van de Ven <arjan@infradead.org>,
	"Paul E . McKenney" <paulmck@kernel.org>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Rik van Riel <riel@surriel.com>,
	Anna-Maria Behnsen <anna-maria@linutronix.de>
Subject: [PATCH v4 02/16] timer: Move store of next event into __next_timer_interrupt()
Date: Fri,  4 Nov 2022 15:57:23 +0100	[thread overview]
Message-ID: <20221104145737.71236-3-anna-maria@linutronix.de> (raw)
In-Reply-To: <20221104145737.71236-1-anna-maria@linutronix.de>

Both call sides of __next_timer_interrupt() store return value directly in
base->next_expiry. Move the store into __next_timer_interrupt() and to make
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>
---
v4: rename function as suggested by Frederic Weisbecker
---
 kernel/time/timer.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 717fcb9fb14a..2fd5de648d7c 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -1571,8 +1571,10 @@ 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;
@@ -1638,10 +1640,11 @@ 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;
+	return;
 }
 
 #ifdef CONFIG_NO_HZ_COMMON
@@ -1701,7 +1704,7 @@ 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;
 
 	/*
@@ -1784,7 +1787,7 @@ 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);
-- 
2.30.2


  parent reply	other threads:[~2022-11-04 14:58 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-04 14:57 [PATCH v4 00/16] timer: Move from a push remote at enqueue to a pull at expiry model Anna-Maria Behnsen
2022-11-04 14:57 ` [PATCH v4 01/16] tick-sched: Warn when next tick seems to be in the past Anna-Maria Behnsen
2022-11-04 14:57 ` Anna-Maria Behnsen [this message]
2022-11-04 14:57 ` [PATCH v4 03/16] timer: Split next timer interrupt logic Anna-Maria Behnsen
2022-11-04 14:57 ` [PATCH v4 04/16] timer: Rework idle logic Anna-Maria Behnsen
2022-11-04 14:57 ` [PATCH v4 05/16] add_timer_on(): Make sure callers have TIMER_PINNED flag Anna-Maria Behnsen
2022-11-04 16:43   ` Frederic Weisbecker
2022-11-07  8:11     ` Anna-Maria Behnsen
2022-11-07 10:11       ` Frederic Weisbecker
2022-11-04 14:57 ` [PATCH v4 06/16] timer: Keep the pinned timers separate from the others Anna-Maria Behnsen
2022-11-04 14:57 ` [PATCH v4 07/16] timer: Retrieve next expiry of pinned/non-pinned timers seperately Anna-Maria Behnsen
2022-11-07 11:58   ` Frederic Weisbecker
2022-11-04 14:57 ` [PATCH v4 08/16] timer: Rename get_next_timer_interrupt() Anna-Maria Behnsen
2022-11-07 12:13   ` Frederic Weisbecker
2022-11-04 14:57 ` [PATCH v4 09/16] timer: Split out "get next timer interrupt" functionality Anna-Maria Behnsen
2022-11-07 12:42   ` Frederic Weisbecker
2022-11-08 15:30     ` Anna-Maria Behnsen
2022-11-04 14:57 ` [PATCH v4 10/16] timer: Add get next timer interrupt functionality for remote CPUs Anna-Maria Behnsen
2022-11-04 14:57 ` [PATCH v4 11/16] timer: Restructure internal locking Anna-Maria Behnsen
2022-11-04 14:57 ` [PATCH v4 12/16] timer: Check if timers base is handled already Anna-Maria Behnsen
2022-11-04 14:57 ` [PATCH v4 13/16] tick/sched: Split out jiffies update helper function Anna-Maria Behnsen
2022-11-04 14:57 ` [PATCH v4 14/16] timer: Implement the hierarchical pull model Anna-Maria Behnsen
2022-11-07 22:07   ` Frederic Weisbecker
2022-11-08 16:16     ` Anna-Maria Behnsen
2022-11-09 17:12       ` Frederic Weisbecker
2022-11-08 10:47   ` Frederic Weisbecker
2022-11-08 17:02     ` Anna-Maria Behnsen
2022-11-09 17:13       ` Frederic Weisbecker
2022-11-08 11:48   ` Frederic Weisbecker
2022-11-09 16:39   ` Frederic Weisbecker
2022-11-10  6:34     ` Anna-Maria Behnsen
2022-11-14 13:09   ` Frederic Weisbecker
2022-11-15 11:31   ` Frederic Weisbecker
2022-11-24  7:47     ` Anna-Maria Behnsen
2022-11-28 16:20       ` Frederic Weisbecker
2022-11-29 10:30         ` Frederic Weisbecker
2022-11-16 13:40   ` Frederic Weisbecker
2022-11-04 14:57 ` [PATCH v4 15/16] timer_migration: Add tracepoints Anna-Maria Behnsen
2022-11-04 14:57 ` [PATCH v4 16/16] timer: Always queue timers on the local CPU Anna-Maria Behnsen
2022-11-08  4:37 ` [PATCH v4 00/16] timer: Move from a push remote at enqueue to a pull at expiry model Pavan Kondeti
2022-11-08 15:06   ` Anna-Maria Behnsen
2022-11-08 16:04     ` Pavan Kondeti
2022-11-08 17:39       ` Anna-Maria Behnsen
2022-11-08 18:48         ` Pavan Kondeti

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