From: Rik van Riel <riel@redhat.com>
To: Frederic Weisbecker <fweisbec@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
James Hartsock <hartsjc@redhat.com>,
stable@vger.kernel.org, Tim Wright <tim@binbash.co.uk>,
Pavel Machek <pavel@ucw.cz>
Subject: Re: [PATCH 2/2] tick: Make sure tick timer is active when bypassing reprogramming
Date: Thu, 20 Apr 2017 12:01:25 -0400 [thread overview]
Message-ID: <1492704085.8850.202.camel@redhat.com> (raw)
In-Reply-To: <1492702230-28462-3-git-send-email-fweisbec@gmail.com>
On Thu, 2017-04-20 at 17:30 +0200, Frederic Weisbecker wrote:
> So far we have run into too much troubles with the optimization path
> that skips reprogramming the clock on IRQ exit when the expiration
> deadline hasn't changed. If by accident the cached deadline happens
> to
> be out of sync with the hardware deadline, the buggy result and its
> cause are hard to investigate. So lets detect and warn about the
> issue
> early.
>
> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
> Cc: Tim Wright <tim@binbash.co.uk>
> Cc: Pavel Machek <pavel@ucw.cz>
> Cc: James Hartsock <hartsjc@redhat.com>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Rik van Riel <riel@redhat.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Ingo Molnar <mingo@kernel.org>
Acked-by: Rik van Riel <riel@redhat.com>
next prev parent reply other threads:[~2017-04-20 16:01 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-20 15:30 [PATCH 0/2] nohz: Deal with clock reprogram skipping issues Frederic Weisbecker
2017-04-20 15:30 ` [PATCH 1/2] nohz: Fix again collision between tick and other hrtimers Frederic Weisbecker
2017-04-20 16:00 ` Rik van Riel
2017-04-20 15:30 ` [PATCH 2/2] tick: Make sure tick timer is active when bypassing reprogramming Frederic Weisbecker
2017-04-20 16:01 ` Rik van Riel [this message]
2017-04-20 17:56 ` Thomas Gleixner
2017-04-20 18:29 ` Frederic Weisbecker
2017-04-20 19:40 ` Thomas Gleixner
2017-04-20 23:27 ` Frederic Weisbecker
-- strict thread matches above, loose matches on Subject: below --
2017-04-21 14:00 [PATCH 0/2] nohz: Deal with clock reprogram skipping issues v2 Frederic Weisbecker
2017-04-21 14:00 ` [PATCH 2/2] tick: Make sure tick timer is active when bypassing reprogramming Frederic Weisbecker
2017-06-03 8:06 ` Levin, Alexander (Sasha Levin)
2017-06-03 12:42 ` Frederic Weisbecker
2017-06-03 13:00 ` Levin, Alexander (Sasha Levin)
2017-06-06 14:52 ` Frederic Weisbecker
2017-06-07 4:17 ` Levin, Alexander (Sasha Levin)
2017-06-07 14:14 ` Frederic Weisbecker
2017-06-07 21:36 ` Levin, Alexander (Sasha Levin)
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