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From: Ingo Molnar <mingo@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Sasha Levin <sasha.levin@oracle.com>,
	linux-kernel@vger.kernel.org, pjt@google.com, tglx@linutronix.de,
	klamm@yandex-team.ru, bsegall@google.com, hpa@zytor.com
Subject: Re: [tip:timers/core] hrtimer: Allow concurrent hrtimer_start() for self restarting timers
Date: Wed, 13 May 2015 15:54:22 +0200	[thread overview]
Message-ID: <20150513135422.GA24332@gmail.com> (raw)
In-Reply-To: <20150513134311.GW21418@twins.programming.kicks-ass.net>


* Peter Zijlstra <peterz@infradead.org> wrote:

> On Tue, May 12, 2015 at 09:52:09AM -0400, Sasha Levin wrote:
> > Hey Peter,
> > 
> > I seem to be hitting this warning with the latest -next (2015-05-11):
> > 
> > [3344291.055800] WARNING: CPU: 0 PID: 9422 at kernel/time/hrtimer.c:802 hrtimer_forward+0x1f9/0x330()
> 
> Indeed.
> 
> So I can't seem to come up with a pretty solution :-(

I'm running into this rather frequently as well, in -tip integration 
testing, on real hardware, so we need a solution :-/

Thanks,

	Ingo

  reply	other threads:[~2015-05-13 13:54 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-15  9:41 [PATCH 0/3] hrtimer (related) fixes Peter Zijlstra
2015-04-15  9:41 ` [PATCH 1/3] hrtimer: Fix race between hrtimer_start() and __run_hrtimer() Peter Zijlstra
2015-04-15 10:26   ` Thomas Gleixner
2015-04-15 11:31     ` Peter Zijlstra
2015-04-15 11:35       ` Thomas Gleixner
2015-04-15 11:43         ` Peter Zijlstra
2015-04-22 19:15       ` [tip:timers/core] hrtimer: Allow concurrent hrtimer_start() for self restarting timers tip-bot for Peter Zijlstra
2015-05-12 13:52         ` Sasha Levin
2015-05-13 13:43           ` Peter Zijlstra
2015-05-13 13:54             ` Ingo Molnar [this message]
2015-05-13 17:25             ` bsegall
2015-05-13 23:09             ` Sasha Levin
2015-05-14 10:23               ` Peter Zijlstra
2015-05-18 15:21                 ` [tip:timers/core] sched,perf: Fix periodic timers tip-bot for Peter Zijlstra
2015-04-15  9:41 ` [PATCH 2/3] sched: Cleanup bandwidth timers Peter Zijlstra
2015-04-16 20:03   ` bsegall
2015-04-22 19:15   ` [tip:timers/core] " tip-bot for Peter Zijlstra
2015-04-15  9:41 ` [PATCH 3/3] perf: Fix mux_interval hrtimer wreckage Peter Zijlstra
2015-04-15 13:48   ` David Ahern
2015-04-15 14:20     ` Peter Zijlstra
2015-04-22 15:12   ` Thomas Gleixner
2015-04-22 19:15   ` [tip:timers/core] " tip-bot for Peter Zijlstra

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