Patch "timers: Rename del_timer() to timer_delete()" has been added to the 5.10-stable tree

gregkh
2026-04-23T12:35:48Z

This is a note to let you know that I've just added the patch titled

timers: Rename del_timer() to timer_delete()

to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
timers-rename-del_timer-to-timer_delete.patch
and it can be found in the queue-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.

From stable+bounces-217473-greg=kroah.com@vger.kernel.org Thu Feb 19 18:14:21 2026
From: Jeongjun Park <aha310510@gmail.com>
Date: Fri, 20 Feb 2026 02:13:02 +0900
Subject: timers: Rename del_timer() to timer_delete()
To: stable@vger.kernel.org
Cc: gregkh@linuxfoundation.org, tglx@linutronix.de, Julia.Lawall@inria.fr, akpm@linux-foundation.org, anna-maria@linutronix.de, arnd@arndb.de, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, linux@roeck-us.net, luiz.dentz@gmail.com, marcel@holtmann.org, maz@kernel.org, peterz@infradead.org, rostedt@goodmis.org, sboyd@kernel.org, viresh.kumar@linaro.org, zouyipeng@huawei.com, aha310510@gmail.com, linux-staging@lists.linux.dev, Jacob Keller <jacob.e.keller@intel.com>
Message-ID: <20260219171310.118170-8-aha310510@gmail.com>

From: Thomas Gleixner <tglx@linutronix.de>

[ Upstream commit bb663f0f3c396c6d05f6c5eeeea96ced20ff112e ]

The timer related functions do not have a strict timer_ prefixed namespace
which is really annoying.

Rename del_timer() to timer_delete() and provide del_timer()
as a wrapper. Document that del_timer() is not for new code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Link: https://lore.kernel.org/r/20221123201625.015535022@linutronix.de
Signed-off-by: Jeongjun Park <aha310510@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/timer.h | 15 ++++++++++++++-
kernel/time/timer.c | 6 +++---
2 files changed, 17 insertions(+), 4 deletions(-)

--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -169,7 +169,6 @@ static inline int timer_pending(const st
}

extern void add_timer_on(struct timer_list *timer, int cpu);
-extern int del_timer(struct timer_list * timer);
extern int mod_timer(struct timer_list *timer, unsigned long expires);
extern int mod_timer_pending(struct timer_list *timer, unsigned long expires);
extern int timer_reduce(struct timer_list *timer, unsigned long expires);
@@ -184,6 +183,7 @@ extern void add_timer(struct timer_list

extern int try_to_del_timer_sync(struct timer_list *timer);
extern int timer_delete_sync(struct timer_list *timer);
+extern int timer_delete(struct timer_list *timer);

/**
* del_timer_sync - Delete a pending timer and wait for a running callback
@@ -198,6 +198,19 @@ static inline int del_timer_sync(struct
return timer_delete_sync(timer);
}

+/**
+ * del_timer - Delete a pending timer
+ * @timer: The timer to be deleted
+ *
+ * See timer_delete() for detailed explanation.
+ *
+ * Do not use in new code. Use timer_delete() instead.
+ */
+static inline int del_timer(struct timer_list *timer)
+{
+ return timer_delete(timer);
+}
+
extern void init_timers(void);
extern void run_local_timers(void);
struct hrtimer;
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -1204,7 +1204,7 @@ void add_timer_on(struct timer_list *tim
EXPORT_SYMBOL_GPL(add_timer_on);

/**
- * del_timer - Deactivate a timer.
+ * timer_delete - Deactivate a timer
* @timer: The timer to be deactivated
*
* The function only deactivates a pending timer, but contrary to
@@ -1217,7 +1217,7 @@ EXPORT_SYMBOL_GPL(add_timer_on);
* * %0 - The timer was not pending
* * %1 - The timer was pending and deactivated
*/
-int del_timer(struct timer_list *timer)
+int timer_delete(struct timer_list *timer)
{
struct timer_base *base;
unsigned long flags;
@@ -1233,7 +1233,7 @@ int del_timer(struct timer_list *timer)

return ret;
}
-EXPORT_SYMBOL(del_timer);
+EXPORT_SYMBOL(timer_delete);

/**
* try_to_del_timer_sync - Try to deactivate a timer

Patches currently in stable-queue which might be from aha310510@gmail.com are

queue-5.10/timers-update-the-documentation-to-reflect-on-the-new-timer_shutdown-api.patch
queue-5.10/clocksource-drivers-arm_arch_timer-do-not-use-timer-namespace-for-timer_shutdown-function.patch
queue-5.10/timers-split-del_timer-to-prepare-for-shutdown-mode.patch
queue-5.10/arm-spear-do-not-use-timer-namespace-for-timer_shutdown-function.patch
queue-5.10/media-as102-fix-to-not-free-memory-after-the-device-is-registered-in-as102_usb_probe.patch
queue-5.10/timers-add-shutdown-mechanism-to-the-internal-functions.patch
queue-5.10/timers-provide-timer_shutdown.patch
queue-5.10/timers-rename-del_timer-to-timer_delete.patch
queue-5.10/timers-replace-bug_on-s.patch
queue-5.10/bluetooth-hci_qca-fix-the-teardown-problem-for-real.patch
queue-5.10/timers-fix-null-function-pointer-race-in-timer_shutdown_sync.patch
queue-5.10/documentation-replace-del_timer-del_timer_sync.patch
queue-5.10/documentation-remove-bogus-claim-about-del_timer_sync.patch
queue-5.10/timers-silently-ignore-timers-with-a-null-function.patch
queue-5.10/timers-get-rid-of-del_singleshot_timer_sync.patch
queue-5.10/media-hackrf-fix-to-not-free-memory-after-the-device-is-registered-in-hackrf_probe.patch
queue-5.10/clocksource-drivers-sp804-do-not-use-timer-namespace-for-timer_shutdown-function.patch