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Message-Id: <219ac422c7baf22e194e79d651cf1443f11d6b8c.1729864823.git.namcao@linutronix.de>
Date: Mon, 28 Oct 2024 08:31:53 +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 20/31] time: Switch to 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: John Stultz <jstultz@...gle.com>
---
kernel/time/ntp.c | 3 +--
kernel/time/posix-timers.c | 7 +++----
kernel/time/sched_clock.c | 3 +--
kernel/time/tick-broadcast-hrtimer.c | 3 +--
kernel/time/tick-sched.c | 6 ++----
5 files changed, 8 insertions(+), 14 deletions(-)
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index b550ebe0f03b..577e11d1b191 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -678,8 +678,7 @@ void ntp_notify_cmos_timer(bool offset_set)
static void __init ntp_init_cmos_sync(void)
{
- hrtimer_init(&sync_hrtimer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
- sync_hrtimer.function = sync_timer_callback;
+ hrtimer_setup(&sync_hrtimer, sync_timer_callback, CLOCK_REALTIME, HRTIMER_MODE_ABS);
}
#else /* CONFIG_GENERIC_CMOS_UPDATE) || defined(CONFIG_RTC_SYSTOHC) */
static inline void __init ntp_init_cmos_sync(void) { }
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index fc40dacabe78..f3acb16d6254 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -430,7 +430,7 @@ static void posix_timer_unhash_and_free(struct k_itimer *tmr)
static int common_timer_create(struct k_itimer *new_timer)
{
- hrtimer_init(&new_timer->it.real.timer, new_timer->it_clock, 0);
+ hrtimer_setup(&new_timer->it.real.timer, posix_timer_fn, new_timer->it_clock, 0);
return 0;
}
@@ -784,7 +784,7 @@ static void common_hrtimer_arm(struct k_itimer *timr, ktime_t expires,
/*
* Posix magic: Relative CLOCK_REALTIME timers are not affected by
* clock modifications, so they become CLOCK_MONOTONIC based under the
- * hood. See hrtimer_init(). Update timr->kclock, so the generic
+ * hood. See hrtimer_setup(). Update timr->kclock, so the generic
* functions which use timr->kclock->clock_get_*() work.
*
* Note: it_clock stays unmodified, because the next timer_set() might
@@ -793,8 +793,7 @@ static void common_hrtimer_arm(struct k_itimer *timr, ktime_t expires,
if (timr->it_clock == CLOCK_REALTIME)
timr->kclock = absolute ? &clock_realtime : &clock_monotonic;
- hrtimer_init(&timr->it.real.timer, timr->it_clock, mode);
- timr->it.real.timer.function = posix_timer_fn;
+ hrtimer_setup(&timr->it.real.timer, posix_timer_fn, timr->it_clock, mode);
if (!absolute)
expires = ktime_add_safe(expires, timer->base->get_time());
diff --git a/kernel/time/sched_clock.c b/kernel/time/sched_clock.c
index 68d6c1190ac7..39017f1f8486 100644
--- a/kernel/time/sched_clock.c
+++ b/kernel/time/sched_clock.c
@@ -249,8 +249,7 @@ void __init generic_sched_clock_init(void)
* Start the timer to keep sched_clock() properly updated and
* sets the initial epoch.
*/
- hrtimer_init(&sched_clock_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);
- sched_clock_timer.function = sched_clock_poll;
+ hrtimer_setup(&sched_clock_timer, sched_clock_poll, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);
hrtimer_start(&sched_clock_timer, cd.wrap_kt, HRTIMER_MODE_REL_HARD);
}
diff --git a/kernel/time/tick-broadcast-hrtimer.c b/kernel/time/tick-broadcast-hrtimer.c
index e28f9210f8a1..a88b72b0f35e 100644
--- a/kernel/time/tick-broadcast-hrtimer.c
+++ b/kernel/time/tick-broadcast-hrtimer.c
@@ -100,7 +100,6 @@ static enum hrtimer_restart bc_handler(struct hrtimer *t)
void tick_setup_hrtimer_broadcast(void)
{
- hrtimer_init(&bctimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
- bctimer.function = bc_handler;
+ hrtimer_setup(&bctimer, bc_handler, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
clockevents_register_device(&ce_broadcast_hrtimer);
}
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 753a184c7090..bcea3a9fe638 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -1572,12 +1572,10 @@ void tick_setup_sched_timer(bool hrtimer)
struct tick_sched *ts = this_cpu_ptr(&tick_cpu_sched);
/* Emulate tick processing via per-CPU hrtimers: */
- hrtimer_init(&ts->sched_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
+ hrtimer_setup(&ts->sched_timer, tick_nohz_handler, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
- if (IS_ENABLED(CONFIG_HIGH_RES_TIMERS) && hrtimer) {
+ if (IS_ENABLED(CONFIG_HIGH_RES_TIMERS) && hrtimer)
tick_sched_flag_set(ts, TS_FLAG_HIGHRES);
- ts->sched_timer.function = tick_nohz_handler;
- }
/* Get the next period (per-CPU) */
hrtimer_set_expires(&ts->sched_timer, tick_init_jiffy_update());
--
2.39.5
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