From: Mike Galbraith <efault@gmx.de>
To: Peter Zijlstra <peterz@infradead.org>
Cc: stable <stable@vger.kernel.org>, Ingo Molnar <mingo@kernel.org>,
Oleg Nesterov <oleg@redhat.com>,
linux-tip-commits <linux-tip-commits@vger.kernel.org>
Subject: Re: [tip:locking/core] sched/core: Fix an SMP ordering race in try_to_wake_up() vs. schedule()
Date: Fri, 07 Oct 2016 11:33:32 +0200 [thread overview]
Message-ID: <1475832812.1509.10.camel@gmx.de> (raw)
In-Reply-To: <20161007082950.GS3142@twins.programming.kicks-ass.net>
On Fri, 2016-10-07 at 10:29 +0200, Peter Zijlstra wrote:
> On Fri, Oct 07, 2016 at 03:36:55AM +0200, Mike Galbraith wrote:
> > Seems this may be one of those not so theoretical races. A humongous
> > ppc64 box actually managed to run a task on two cores.. briefly.
>
> Cute :-) Why was you running a year old kernel on that box anyway? ;-)
It was a 3.0 kernel.. and nearly virgin, a tad less than 22k patches :)
-Mike
prev parent reply other threads:[~2016-10-07 9:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <tip-ecf7d01c229d11a44609c0067889372c91fb4f36@git.kernel.org>
2016-10-07 1:36 ` [tip:locking/core] sched/core: Fix an SMP ordering race in try_to_wake_up() vs. schedule() Mike Galbraith
2016-10-07 6:38 ` Jiri Slaby
2016-10-07 8:29 ` Peter Zijlstra
2016-10-07 9:33 ` Mike Galbraith [this message]
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