From: Peter Zijlstra <peterz@infradead.org>
To: Petr Mladek <pmladek@suse.com>
Cc: akpm@linux-foundation.org, loberman@redhat.com, mhocko@suse.com,
mingo@kernel.org, mm-commits@vger.kernel.org, tglx@linutronix.de,
vincent.whitchurch@axis.com
Subject: Re: [PATCH] watchdog: Use bit lock operations to prevent multiple soft-lockup reports
Date: Fri, 19 Mar 2021 13:29:05 +0100 [thread overview]
Message-ID: <YFSZEVty8oNeQfZI@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <YFSVsLGVWMXTvlbk@alley>
On Fri, Mar 19, 2021 at 01:14:40PM +0100, Petr Mladek wrote:
> Use bit_lock operation to prevent multiple soft-lockups reports when
> one CPU already triggered dumping backtraces from all CPUs.
>
> It allows to remove the explicit memory barriers and misleading
> comments.
>
> Suggested-by: Peter Zijlstra <peterz@infradead.org>
> Signed-off-by: Petr Mladek <pmladek@suse.com>
Thanks!
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
next prev parent reply other threads:[~2021-03-19 12:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-11 21:22 + watchdog-fix-barriers-when-printing-backtraces-from-all-cpus.patch added to -mm tree akpm
2021-03-16 11:48 ` Peter Zijlstra
2021-03-17 9:14 ` Petr Mladek
2021-03-19 12:14 ` [PATCH] watchdog: Use bit lock operations to prevent multiple soft-lockup reports Petr Mladek
2021-03-19 12:29 ` Peter Zijlstra [this message]
2021-03-20 16:32 ` Andrew Morton
2021-03-22 13:41 ` Petr Mladek
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