linux-kernel - [PATCH v2 19/31] timerfd: Switch to use hrtimer

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Message-Id: <2d1f26c2c2f3ad15f1ca1a09ecb9d760cafef4a6.1738746821.git.namcao@linutronix.de>
Date: Wed,  5 Feb 2025 11:39:03 +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>,
	linux-kernel@...r.kernel.org
Cc: Nam Cao <namcao@...utronix.de>,
	Christian Brauner <brauner@...nel.org>
Subject: [PATCH v2 19/31] timerfd: Switch to use hrtimer_setup()

hrtimer_setup() takes the callback function pointer as argument and
initializes the timer completely.

Replace hrtimer_init() and the open coded initialization of
hrtimer::function with the new setup mechanism.

Signed-off-by: Nam Cao <namcao@...utronix.de>
Cc: Christian Brauner <brauner@...nel.org>
---
 fs/timerfd.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/timerfd.c b/fs/timerfd.c
index 9f7eb451a60f..cee007e0d978 100644
--- a/fs/timerfd.c
+++ b/fs/timerfd.c
@@ -205,9 +205,8 @@ static int timerfd_setup(struct timerfd_ctx *ctx, int flags,
 			   ALARM_REALTIME : ALARM_BOOTTIME,
 			   timerfd_alarmproc);
 	} else {
-		hrtimer_init(&ctx->t.tmr, clockid, htmode);
+		hrtimer_setup(&ctx->t.tmr, timerfd_tmrproc, clockid, htmode);
 		hrtimer_set_expires(&ctx->t.tmr, texp);
-		ctx->t.tmr.function = timerfd_tmrproc;
 	}
 
 	if (texp != 0) {
@@ -429,7 +428,7 @@ SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags)
 			   ALARM_REALTIME : ALARM_BOOTTIME,
 			   timerfd_alarmproc);
 	else
-		hrtimer_init(&ctx->t.tmr, clockid, HRTIMER_MODE_ABS);
+		hrtimer_setup(&ctx->t.tmr, timerfd_tmrproc, clockid, HRTIMER_MODE_ABS);
 
 	ctx->moffs = ktime_mono_to_real(0);
 
-- 
2.39.5