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From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Sebastian Sewior <bigeasy@linutronix.de>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	LKML <linux-kernel@vger.kernel.org>,
	Anna-Maria Gleixner <anna-maria@linutronix.de>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@kernel.org>
Subject: Re: [PATCH] hrtimer: Reset hrtimer cpu base proper on CPU hotplug
Date: Mon, 29 Jan 2018 01:57:38 -0800
Message-ID: <20180129095738.GU3741@linux.vnet.ibm.com> (raw)
In-Reply-To: <20180129082047.hash3pnhpztzcg22@linutronix.de>

On Mon, Jan 29, 2018 at 09:20:48AM +0100, Sebastian Sewior wrote:
> On 2018-01-26 14:09:17 [-0800], Paul E. McKenney wrote:
> > find this one.  ;-)  But it did pass rcutorture testing for a great many
> > years, didn't it?  :-/
> 
> It started to trigger better (or at all) on our test box with
> 	modprobe kvm_intel preemption_timer=n
> 
> on the host kernel so maybe a completely unrelated change helped to
> trigger this.

Good point!

And testing continues, currently at 108 hours of TREE01 without any
waylayed timers, so looking good!  ;-)

Just kicked off another 70 hours worth.

							Thanx, Paul

  reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-26 13:54 Thomas Gleixner
2018-01-26 22:09 ` Paul E. McKenney
2018-01-28  0:53   ` Paul E. McKenney
2018-01-29  8:20   ` Sebastian Sewior
2018-01-29  9:57     ` Paul E. McKenney [this message]
2018-01-29 23:43       ` Paul E. McKenney
2018-01-30 21:03         ` Thomas Gleixner
2018-01-31  0:52           ` Paul E. McKenney
2018-01-27 14:31 ` [tip:timers/urgent] " tip-bot for Thomas Gleixner

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