From: Dario Faggioli <dario.faggioli@citrix.com>
To: Julien Grall <julien.grall@arm.com>,
Stefano Stabellini <sstabellini@kernel.org>
Cc: xen-devel@lists.xenproject.org, nd@arm.com
Subject: Re: [PATCH 2/5] xen: ARM: suspend the tick (if in use) when going idle.
Date: Tue, 1 Aug 2017 11:26:29 +0200 [thread overview]
Message-ID: <1501579589.30551.9.camel@citrix.com> (raw)
In-Reply-To: <c525ad2b-04f5-15ba-8031-9aa9a8e55ed7@arm.com>
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On Tue, 2017-08-01 at 09:53 +0100, Julien Grall wrote:
> On 31/07/2017 21:59, Stefano Stabellini wrote:
> > On Thu, 27 Jul 2017, Dario Faggioli wrote:
> > >
> > > Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
> >
> > Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
>
> This patch looks standalone, but please don't commit this patch
> without
> the rest of the series. Otherwise, we will introduce regression in
> Xen
> with credit1 as well.
>
I'm not sure I'd call that a "regression". In fact, the current
situation is that the code has a bug, but the absence of this power-
efficiency optimization, on ARM, is covering the bug itself. :-D
Anyway, zero intention to turn this into a terminology bunfight, and,
overall, I even agree with you that it's probably better that this
series go in all-together. :-)
Regards,
Dario
--
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)
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next prev parent reply other threads:[~2017-08-01 9:26 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-27 8:01 [PATCH 0/5] xen: RCU: x86/ARM: Add support of rcu_idle_{enter, exit} Dario Faggioli
2017-07-27 8:01 ` [PATCH 1/5] xen: in do_softirq() sample smp_processor_id() once and for all Dario Faggioli
2017-07-27 8:01 ` [PATCH 2/5] xen: ARM: suspend the tick (if in use) when going idle Dario Faggioli
2017-07-31 20:59 ` Stefano Stabellini
2017-08-01 8:53 ` Julien Grall
2017-08-01 9:26 ` Dario Faggioli [this message]
2017-07-27 8:01 ` [PATCH 3/5] xen: RCU/x86/ARM: discount CPUs that were idle when grace period started Dario Faggioli
2017-07-31 21:17 ` Stefano Stabellini
2017-08-07 8:35 ` Jan Beulich
2017-08-09 8:48 ` Dario Faggioli
2017-08-09 8:57 ` Jan Beulich
2017-08-09 9:20 ` Dario Faggioli
2017-08-09 9:26 ` Jan Beulich
2017-08-09 11:38 ` Tim Deegan
2017-08-11 17:25 ` Dario Faggioli
2017-08-14 10:39 ` Tim Deegan
2017-08-14 13:24 ` Dario Faggioli
2017-08-14 13:54 ` Tim Deegan
2017-08-14 16:21 ` Dario Faggioli
2017-08-14 16:47 ` Tim Deegan
2017-08-14 9:19 ` Dario Faggioli
2017-07-27 8:01 ` [PATCH 4/5] xen: RCU: don't let a CPU with a callback go idle Dario Faggioli
2017-08-07 8:38 ` Jan Beulich
2017-07-27 8:01 ` [PATCH 5/5] xen: RCU: avoid busy waiting until the end of grace period Dario Faggioli
2017-07-31 21:20 ` Stefano Stabellini
2017-07-31 22:03 ` Dario Faggioli
2017-07-31 23:58 ` Stefano Stabellini
2017-08-01 0:47 ` Dario Faggioli
2017-08-01 19:13 ` Stefano Stabellini
2017-08-02 10:14 ` Dario Faggioli
2017-08-01 8:45 ` Julien Grall
2017-08-01 8:54 ` Julien Grall
2017-08-01 9:17 ` Dario Faggioli
2017-08-01 10:22 ` Julien Grall
2017-08-01 10:33 ` Dario Faggioli
2017-08-07 8:54 ` Jan Beulich
2017-08-09 17:34 ` Dario Faggioli
2017-08-10 13:55 ` Dario Faggioli
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