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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 <john.stultz@linaro.org>,
	Eric Dumazet <edumazet@google.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
	linux-pm@vger.kernel.org, Arjan van de Ven <arjan@infradead.org>,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Rik van Riel <riel@redhat.com>,
	Anna-Maria Behnsen <anna-maria@linutronix.de>
Subject: [PATCH v3 04/17] timer: Split next timer interrupt logic
Date: Tue, 25 Oct 2022 15:58:37 +0200	[thread overview]
Message-ID: <20221025135850.51044-5-anna-maria@linutronix.de> (raw)
In-Reply-To: <20221025135850.51044-1-anna-maria@linutronix.de>

Logic for getting next timer interrupt (no matter of recalculated or
already stored in base->next_expiry) is split into a separate function
"next_timer_interrupt()" to make it available for new call sites.

No functional change.

Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
---
 kernel/time/timer.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 7695c733dfa5..f34bc75ff848 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -1681,6 +1681,15 @@ static u64 cmp_next_hrtimer_event(u64 basem, u64 expires)
 	return DIV_ROUND_UP_ULL(nextevt, TICK_NSEC) * TICK_NSEC;
 }
 
+
+static unsigned long next_timer_interrupt(struct timer_base *base)
+{
+	if (base->next_expiry_recalc)
+		__next_timer_interrupt(base);
+
+	return base->next_expiry;
+}
+
 /**
  * get_next_timer_interrupt - return the time (clock mono) of the next timer
  * @basej:	base time jiffies
@@ -1703,9 +1712,8 @@ u64 get_next_timer_interrupt(unsigned long basej, u64 basem)
 		return expires;
 
 	raw_spin_lock(&base->lock);
-	if (base->next_expiry_recalc)
-		__next_timer_interrupt(base);
-	nextevt = base->next_expiry;
+
+	nextevt = next_timer_interrupt(base);
 
 	/*
 	 * We have a fresh next event. Check whether we can forward the
-- 
2.30.2


  parent reply	other threads:[~2022-10-25 13:59 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-25 13:58 [PATCH v3 00/17] timer: Move from a push remote at enqueue to a pull at expiry model Anna-Maria Behnsen
2022-10-25 13:58 ` [PATCH v3 01/17] cpufreq: Prepare timer flags for hierarchical timer pull model Anna-Maria Behnsen
2022-10-26 13:54   ` Frederic Weisbecker
2022-10-31 15:22     ` Anna-Maria Behnsen
2022-10-25 13:58 ` [PATCH v3 02/17] tick-sched: Warn when next tick seems to be in the past Anna-Maria Behnsen
2022-10-25 22:11   ` Frederic Weisbecker
2022-10-25 13:58 ` [PATCH v3 03/17] timer: Move store of next event into __next_timer_interrupt() Anna-Maria Behnsen
2022-10-26  9:33   ` Frederic Weisbecker
2022-10-25 13:58 ` Anna-Maria Behnsen [this message]
2022-10-26  9:40   ` [PATCH v3 04/17] timer: Split next timer interrupt logic Frederic Weisbecker
2022-10-25 13:58 ` [PATCH v3 05/17] timer: Rework idle logic Anna-Maria Behnsen
2022-10-26 13:27   ` Frederic Weisbecker
2022-10-25 13:58 ` [PATCH v3 06/17] timer: Keep the pinned timers separate from the others Anna-Maria Behnsen
2022-10-26 15:26   ` Frederic Weisbecker
2022-10-25 13:58 ` [PATCH v3 07/17] timer: Retrieve next expiry of pinned/non-pinned timers seperately Anna-Maria Behnsen
2022-10-25 13:58 ` [PATCH v3 08/17] timer: Rename get_next_timer_interrupt() Anna-Maria Behnsen
2022-10-25 13:58 ` [PATCH v3 09/17] timer: Split out "get next timer interrupt" functionality Anna-Maria Behnsen
2022-10-25 13:58 ` [PATCH v3 10/17] timer: Add get next timer interrupt functionality for remote CPUs Anna-Maria Behnsen
2022-10-25 13:58 ` [PATCH v3 11/17] timer: Restructure internal locking Anna-Maria Behnsen
2022-10-25 13:58 ` [PATCH v3 12/17] timer: Check if timers base is handled already Anna-Maria Behnsen
2022-10-25 13:58 ` [PATCH v3 13/17] tick/sched: Split out jiffies update helper function Anna-Maria Behnsen
2022-10-25 13:58 ` [PATCH v3 14/17] timer: Implement the hierarchical pull model Anna-Maria Behnsen
2022-10-25 16:36   ` kernel test robot
2022-10-26  5:35   ` kernel test robot
2022-10-27  7:38   ` kernel test robot
2022-10-25 13:58 ` [PATCH v3 15/17] timer_migration: Add tracepoints Anna-Maria Behnsen
2022-10-25 13:58 ` [PATCH v3 16/17] add_timer_on(): Make sure callers have TIMER_PINNED flag Anna-Maria Behnsen
2022-10-25 13:58 ` [PATCH v3 17/17] timer: Always queue timers on the local CPU Anna-Maria Behnsen
2022-10-27  7:22   ` kernel test robot

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