Subject: + kernel-watchdogc-print-traces-for-all-cpus-on-lockup-detection-fix-2.patch added to -mm tree
To: mq@xxxxxxx,atomlin@xxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Fri, 02 May 2014 15:34:28 -0700
The patch titled
Subject: kernel-watchdogc-print-traces-for-all-cpus-on-lockup-detection-fix-2
has been added to the -mm tree. Its filename is
kernel-watchdogc-print-traces-for-all-cpus-on-lockup-detection-fix-2.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kernel-watchdogc-print-traces-for-all-cpus-on-lockup-detection-fix-2.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kernel-watchdogc-print-traces-for-all-cpus-on-lockup-detection-fix-2.patch
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------------------------------------------------------
From: Jan Moskyto Matejka <mq@xxxxxxx>
Subject: kernel-watchdogc-print-traces-for-all-cpus-on-lockup-detection-fix-2
This commit fixes this warning:
kernel/watchdog.c: In function `watchdog_timer_fn':
kernel/watchdog.c:368:4: warning: `smp_mb__after_clear_bit' is deprecated (declared at include/linux/bitops.h:48) [-Wdeprecated-declarations]
smp_mb__after_clear_bit();
That code was introduced in commit 90e6b763ca8a5eb739e59489f42d45e13431d157
("kernel/watchdog.c: print traces for all cpus on lockup detection") and then
merged with another branch containing commit
febdbfe8a91ce0d11939d4940b592eb0dba8d663 ("arch: Prepare for
smp_mb__{before,after}_atomic()") which deprecates the
smp_mb__after_clear_bit() call in favour of smp_mb__after_atomic().
Signed-off-by: Jan Moskyto Matejka <mq@xxxxxxx>
Acked-by: Aaron Tomlin <atomlin@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/watchdog.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN kernel/watchdog.c~kernel-watchdogc-print-traces-for-all-cpus-on-lockup-detection-fix-2 kernel/watchdog.c
--- a/kernel/watchdog.c~kernel-watchdogc-print-traces-for-all-cpus-on-lockup-detection-fix-2
+++ a/kernel/watchdog.c
@@ -363,7 +363,7 @@ static enum hrtimer_restart watchdog_tim
clear_bit(0, &soft_lockup_nmi_warn);
/* Barrier to sync with other cpus */
- smp_mb__after_clear_bit();
+ smp_mb__after_atomic();
}
if (softlockup_panic)
_
Patches currently in -mm which might be from mq@xxxxxxx are
linux-next.patch
kernel-watchdogc-print-traces-for-all-cpus-on-lockup-detection-fix-2.patch
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