linux-kernel - [tip: timers/core] hrtimers: Introduce hrtimer_setup_sleeper_on

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Message-ID: <173094478267.32228.14961081519610756350.tip-bot2@tip-bot2>
Date: Thu, 07 Nov 2024 01:59:42 -0000
From: "tip-bot2 for Nam Cao" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Nam Cao <namcao@...utronix.de>, Thomas Gleixner <tglx@...utronix.de>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject:
 [tip: timers/core] hrtimers: Introduce hrtimer_setup_sleeper_on_stack()

The following commit has been merged into the timers/core branch of tip:

Commit-ID:     c9bd83abfeb9a9b103e689b251ccff7a01be8366
Gitweb:        https://git.kernel.org/tip/c9bd83abfeb9a9b103e689b251ccff7a01be8366
Author:        Nam Cao <namcao@...utronix.de>
AuthorDate:    Thu, 31 Oct 2024 16:14:22 +01:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Thu, 07 Nov 2024 02:47:05 +01:00

hrtimers: Introduce hrtimer_setup_sleeper_on_stack()

The hrtimer_init*() API is replaced by hrtimer_setup*() variants to
initialize the timer including the callback function at once.

hrtimer_init_sleeper_on_stack() does not need user to setup the callback
function separately, so a new variant would not be strictly necessary.

Nonetheless, to keep the naming convention consistent, introduce
hrtimer_setup_sleeper_on_stack(). hrtimer_init_on_stack() will be removed
once all users are converted.

Signed-off-by: Nam Cao <namcao@...utronix.de>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/all/7b5e18e6dd0ace9eaa211201528cb9dc23752454.1730386209.git.namcao@linutronix.de

---
 include/linux/hrtimer.h |  2 ++
 kernel/time/hrtimer.c   | 14 ++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 2da513f..48872a2 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -238,6 +238,8 @@ extern void hrtimer_setup_on_stack(struct hrtimer *timer,
 extern void hrtimer_init_sleeper_on_stack(struct hrtimer_sleeper *sl,
 					  clockid_t clock_id,
 					  enum hrtimer_mode mode);
+extern void hrtimer_setup_sleeper_on_stack(struct hrtimer_sleeper *sl, clockid_t clock_id,
+					   enum hrtimer_mode mode);
 
 #ifdef CONFIG_DEBUG_OBJECTS_TIMERS
 extern void destroy_hrtimer_on_stack(struct hrtimer *timer);
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index daee4e2..1d1f5c0 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -2065,6 +2065,20 @@ void hrtimer_init_sleeper_on_stack(struct hrtimer_sleeper *sl,
 }
 EXPORT_SYMBOL_GPL(hrtimer_init_sleeper_on_stack);
 
+/**
+ * hrtimer_setup_sleeper_on_stack - initialize a sleeper in stack memory
+ * @sl:		sleeper to be initialized
+ * @clock_id:	the clock to be used
+ * @mode:	timer mode abs/rel
+ */
+void hrtimer_setup_sleeper_on_stack(struct hrtimer_sleeper *sl,
+				    clockid_t clock_id, enum hrtimer_mode mode)
+{
+	debug_init_on_stack(&sl->timer, clock_id, mode);
+	__hrtimer_init_sleeper(sl, clock_id, mode);
+}
+EXPORT_SYMBOL_GPL(hrtimer_setup_sleeper_on_stack);
+
 int nanosleep_copyout(struct restart_block *restart, struct timespec64 *ts)
 {
 	switch(restart->nanosleep.type) {