linux-kernel - [PATCH 18/21] sched/idle: Switch to use hrtimer_setup_on

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Message-Id: <db5daed82f8ba69eb155171ed96f3a5a83cd483b.1729864615.git.namcao@linutronix.de>
Date: Mon, 28 Oct 2024 08:29:37 +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>,
	Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH 18/21] sched/idle: Switch to use hrtimer_setup_on_stack()

There is a newly introduced function hrtimer_setup_on_stack(), which will
replace hrtimer_init_on_stack(). In addition to what
hrtimer_init_on_stack() does, this new function also sanity-checks and
initializes the callback function pointer.

Switch to use the new function.

Patch was created by using Coccinelle.

Signed-off-by: Nam Cao <namcao@...utronix.de>
---
Cc: Peter Zijlstra <peterz@...radead.org>
---
 kernel/sched/idle.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c
index d2f096bb274c..631e42802925 100644
--- a/kernel/sched/idle.c
+++ b/kernel/sched/idle.c
@@ -399,8 +399,8 @@ void play_idle_precise(u64 duration_ns, u64 latency_ns)
 	cpuidle_use_deepest_state(latency_ns);
 
 	it.done = 0;
-	hrtimer_init_on_stack(&it.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);
-	it.timer.function = idle_inject_timer_fn;
+	hrtimer_setup_on_stack(&it.timer, idle_inject_timer_fn, CLOCK_MONOTONIC,
+			       HRTIMER_MODE_REL_HARD);
 	hrtimer_start(&it.timer, ns_to_ktime(duration_ns),
 		      HRTIMER_MODE_REL_PINNED_HARD);
 
-- 
2.39.5