From: Dimitri Sivanich <sivanich@sgi.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] specific do_timer_cpu value for nohz off mode
Date: Fri, 2 Dec 2011 14:22:54 -0600 [thread overview]
Message-ID: <20111202202254.GG2164@sgi.com> (raw)
In-Reply-To: <20111202201452.GF2164@sgi.com>
On Fri, Dec 02, 2011 at 02:14:52PM -0600, Dimitri Sivanich wrote:
> So at that time, we could be off +- almost a tick. The question is, how
> critical is that? When you down a cpu, the same sort of thing could
> happen via tick_handover_do_timer(), which itself does nothing more than
> change tick_do_timer_cpu.
I should clarify that by 'same sort of thing' I mean that the target cpu
might've just gone through tick_periodic(), so we could miss a tick before
the next update.
next prev parent reply other threads:[~2011-12-02 20:22 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-08 19:11 [PATCH] specific do_timer_cpu value for nohz off mode Dimitri Sivanich
2011-11-23 0:08 ` Andrew Morton
2011-11-30 15:29 ` Dimitri Sivanich
2011-12-01 0:11 ` Andrew Morton
2011-12-01 0:16 ` Andrew Morton
2011-12-01 2:07 ` Dimitri Sivanich
2011-12-01 2:13 ` Andrew Morton
2011-12-01 16:37 ` Dimitri Sivanich
2011-12-01 22:56 ` Andrew Morton
2011-12-02 20:14 ` Dimitri Sivanich
2011-12-02 20:22 ` Dimitri Sivanich [this message]
2011-12-02 22:42 ` Thomas Gleixner
2011-12-01 2:06 ` Dimitri Sivanich
2011-12-01 2:12 ` Andrew Morton
2011-12-01 2:34 ` Dimitri Sivanich
2011-12-01 2:38 ` Andrew Morton
2012-01-15 13:46 ` Mike Galbraith
2012-01-15 14:04 ` Mike Galbraith
2012-01-15 14:23 ` Mike Galbraith
2012-01-25 11:27 ` Mike Galbraith
2012-02-15 14:16 ` Thomas Gleixner
2012-02-15 14:37 ` Dimitri Sivanich
2012-02-15 14:52 ` Thomas Gleixner
2012-02-15 15:34 ` Dimitri Sivanich
2012-02-15 20:36 ` Thomas Gleixner
2012-02-16 14:59 ` Dimitri Sivanich
2013-03-19 17:03 ` [PATCH][RFC] " Jiri Bohac
-- strict thread matches above, loose matches on Subject: below --
2011-08-17 16:07 [PATCH] " Dimitri Sivanich
2011-08-17 16:47 ` Thomas Gleixner
2011-08-23 19:56 ` Dimitri Sivanich
2011-09-02 8:19 ` Thomas Gleixner
2011-09-02 19:29 ` Dimitri Sivanich
2011-09-02 19:57 ` Thomas Gleixner
2011-09-02 20:39 ` Dimitri Sivanich
2011-08-03 19:57 Dimitri Sivanich
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