public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: linux-kernel@vger.kernel.org
Cc: oe-kbuild-all@lists.linux.dev,
	Thomas Gleixner <tglx@linutronix.de>,
	Peter Zijlstra <peterz@infradead.org>,
	kernel test robot <lkp@intel.com>
Subject: [PATCH] hrtimer: Make the argument passed to lockdep_hrtimer_exit() look used.
Date: Mon, 20 Nov 2023 16:39:53 +0100	[thread overview]
Message-ID: <20231120153953.kGBSHe5j@linutronix.de> (raw)
In-Reply-To: <202311191229.55QXHVc6-lkp@intel.com>

The lockdep_hrtimer_enter() macro returns a value which is then saved in
a local variable. The value is then fed to lockdep_hrtimer_exit(). In
case lockdep is disabled then the value remains unused leading to a "set
but not used" warning by the compiler.

Make the content passed to lockdep_hrtimer_exit() look used so the
compiler does not complain about it.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202311191229.55QXHVc6-lkp@intel.com/
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 include/linux/irqflags.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/irqflags.h b/include/linux/irqflags.h
index 2b665c32f5fe6..2e09c269bf9d8 100644
--- a/include/linux/irqflags.h
+++ b/include/linux/irqflags.h
@@ -126,7 +126,7 @@ 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)
-- 
2.42.0


      reply	other threads:[~2023-11-20 15:40 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-19  4:35 kernel/time/hrtimer.c:1483:14: warning: variable 'expires_in_hardirq' set but not used kernel test robot
2023-11-20 15:39 ` Sebastian Andrzej Siewior [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20231120153953.kGBSHe5j@linutronix.de \
    --to=bigeasy@linutronix.de \
    --cc=linux-kernel@vger.kernel.org \
    --cc=lkp@intel.com \
    --cc=oe-kbuild-all@lists.linux.dev \
    --cc=peterz@infradead.org \
    --cc=tglx@linutronix.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox