This is a note to let you know that I've just added the patch titled
irqflags: Explicitly ignore lockdep_hrtimer_exit() argument
to the 5.15-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:
irqflags-explicitly-ignore-lockdep_hrtimer_exit-argument.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c1d11fc2c8320871b40730991071dd0a0b405bc8 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@xxxxxxxx>
Date: Mon, 8 Apr 2024 09:46:01 +0200
Subject: irqflags: Explicitly ignore lockdep_hrtimer_exit() argument
From: Arnd Bergmann <arnd@xxxxxxxx>
commit c1d11fc2c8320871b40730991071dd0a0b405bc8 upstream.
When building with 'make W=1' but CONFIG_TRACE_IRQFLAGS=n, the
unused argument to lockdep_hrtimer_exit() causes a warning:
kernel/time/hrtimer.c:1655:14: error: variable 'expires_in_hardirq' set but not used [-Werror=unused-but-set-variable]
This is intentional behavior, so add a cast to void to shut up the warning.
Fixes: 73d20564e0dc ("hrtimer: Don't dereference the hrtimer pointer after the callback")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20240408074609.3170807-1-arnd@xxxxxxxxxx
Closes: https://lore.kernel.org/oe-kbuild-all/202311191229.55QXHVc6-lkp@xxxxxxxxx/
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/irqflags.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/linux/irqflags.h
+++ b/include/linux/irqflags.h
@@ -133,7 +133,7 @@ do { \
# define lockdep_softirq_enter() do { } while (0)
# define lockdep_softirq_exit() do { } while (0)
# define lockdep_hrtimer_enter(__hrtimer) false
-# define lockdep_hrtimer_exit(__context) do { } while (0)
+# define lockdep_hrtimer_exit(__context) do { (void)(__context); } while (0)
# define lockdep_posixtimer_enter() do { } while (0)
# define lockdep_posixtimer_exit() do { } while (0)
# define lockdep_irq_work_enter(__work) do { } while (0)
Patches currently in stable-queue which might be from arnd@xxxxxxxx are
queue-5.15/ipv4-route-avoid-unused-but-set-variable-warning.patch
queue-5.15/nouveau-fix-function-cast-warning.patch
queue-5.15/tracing-hide-unused-ftrace_event_id_fops.patch
queue-5.15/ipv6-fib-hide-unused-pn-variable.patch
queue-5.15/irqflags-explicitly-ignore-lockdep_hrtimer_exit-argument.patch
