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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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  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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