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

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Message-Id: <5155e89593a311901e2bc2fb3a72f7fbfea2fb57.1729864823.git.namcao@linutronix.de>
Date: Mon, 28 Oct 2024 08:31:52 +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>,
	Christian Brauner <brauner@...nel.org>
Subject: [PATCH 19/31] timerfd: Switch to use hrtimer_setup()

There is a newly introduced hrtimer_setup() which will replace
hrtimer_init(). This new function is similar to the old one, except that it
also sanity-checks and initializes the timer's callback function.

Switch to use this new function.

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 137523e0bb21..c57ebced16bf 100644
--- a/fs/timerfd.c
+++ b/fs/timerfd.c
@@ -207,9 +207,8 @@ 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) {
@@ -444,7 +443,7 @@ 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