linux-kernel - [PATCH 20/21] alarmtimer: Switch to use hrtimer_setup() and hrtimer_setup_on

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Message-Id: <0ac2e27f4bd4f5206d706f536387eeba908aa7a4.1729864615.git.namcao@linutronix.de>
Date: Mon, 28 Oct 2024 08:29:39 +0100
From: Nam Cao <namcao@...utronix.de>
To: Anna-Maria Behnsen <anna-maria@...utronix.de>,
	Frederic Weisbecker <frederic@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Miguel Ojeda <ojeda@...nel.org>,
	Kees Cook <kees@...nel.org>,
	linux-kernel@...r.kernel.org
Cc: Nam Cao <namcao@...utronix.de>,
	John Stultz <jstultz@...gle.com>
Subject: [PATCH 20/21] alarmtimer: Switch to use hrtimer_setup() and hrtimer_setup_on_stack()

There are two newly introduced hrtimer_setup() and hrtimer_setup_on_stack()
which will replace hrtimer_init() and hrtimer_init_on_stack().

The new functions are mostly similar, except that they also sanity-check
and initialize the timer's callback function.

Switch to use the new functions.

Signed-off-by: Nam Cao <namcao@...utronix.de>
---
Cc: John Stultz <jstultz@...gle.com>
---
 kernel/time/alarmtimer.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index 8bf888641694..3c70a3abd6a2 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -337,7 +337,6 @@ __alarm_init(struct alarm *alarm, enum alarmtimer_type type,
 	     enum alarmtimer_restart (*function)(struct alarm *, ktime_t))
 {
 	timerqueue_init(&alarm->node);
-	alarm->timer.function = alarmtimer_fired;
 	alarm->function = function;
 	alarm->type = type;
 	alarm->state = ALARMTIMER_STATE_INACTIVE;
@@ -352,8 +351,8 @@ __alarm_init(struct alarm *alarm, enum alarmtimer_type type,
 void alarm_init(struct alarm *alarm, enum alarmtimer_type type,
 		enum alarmtimer_restart (*function)(struct alarm *, ktime_t))
 {
-	hrtimer_init(&alarm->timer, alarm_bases[type].base_clockid,
-		     HRTIMER_MODE_ABS);
+	hrtimer_setup(&alarm->timer, alarmtimer_fired, alarm_bases[type].base_clockid,
+		      HRTIMER_MODE_ABS);
 	__alarm_init(alarm, type, function);
 }
 EXPORT_SYMBOL_GPL(alarm_init);
@@ -816,8 +815,8 @@ static void
 alarm_init_on_stack(struct alarm *alarm, enum alarmtimer_type type,
 		    enum alarmtimer_restart (*function)(struct alarm *, ktime_t))
 {
-	hrtimer_init_on_stack(&alarm->timer, alarm_bases[type].base_clockid,
-			      HRTIMER_MODE_ABS);
+	hrtimer_setup_on_stack(&alarm->timer, alarmtimer_fired, alarm_bases[type].base_clockid,
+			       HRTIMER_MODE_ABS);
 	__alarm_init(alarm, type, function);
 }
 
-- 
2.39.5