linux-kernel - Re: [PATCH v2] ARM: cpuidle: make arm_cpuidle

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Message-ID: <56FB8ACD.6050503@linaro.org>
Date:	Wed, 30 Mar 2016 10:14:05 +0200
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	Jisheng Zhang <jszhang@...vell.com>
Cc:	linux@....linux.org.uk, lorenzo.pieralisi@....com,
	lina.iyer@...aro.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] ARM: cpuidle: make arm_cpuidle_suspend() a bit more
 efficient

On 03/30/2016 10:05 AM, Jisheng Zhang wrote:
> Dear Daniel,
>
> On Wed, 30 Mar 2016 10:02:02 +0200 Daniel Lezcano wrote:
>
>> On 03/30/2016 09:47 AM, Jisheng Zhang wrote:
>>> Currently, we check cpuidle_ops.suspend every time when entering a
>>> low-power idle state. But this check could be avoided in this hot path
>>> by moving it into arm_cpuidle_read_ops() to reduce arm_cpuidle_suspend
>>> overhead a bit.
>>
>> This patch makes sense but the ARM64 part is missing.
>>
>
> Here is the ARM64 part, you are also in the "To" list ;)
>
> http://lists.infradead.org/pipermail/linux-arm-kernel/2016-March/417713.html

Ah, yes. That happens when we read the email sequentially :)

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