linux-kernel - Re: [RFC PATCH v4 2/4] genirq: add move

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Message-ID: <55FB651D.5080101@huawei.com>
Date:	Fri, 18 Sep 2015 09:13:01 +0800
From:	Yang Yingliang <yangyingliang@...wei.com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>,
	Thomas Gleixner <tglx@...utronix.de>
CC:	Mark Rutland <mark.rutland@....com>,
	Marc Zyngier <marc.zyngier@....com>,
	Will Deacon <will.deacon@....com>,
	<linux-kernel@...r.kernel.org>, Hanjun Guo <hanjun.guo@...aro.org>,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RFC PATCH v4 2/4] genirq: add move_irqs() for cpu hotplug



On 2015/9/18 6:09, Russell King - ARM Linux wrote:
> On Fri, Sep 18, 2015 at 12:04:06AM +0200, Thomas Gleixner wrote:
>> On Thu, 17 Sep 2015, Marc Zyngier wrote:
>>> I don't think having this prototype guarded by this #if is very useful.
>>> You can probably leave it standalone.
>>
>> Yes, there is no point if the function name is unique. Though
>> move_irqs() is rather undescriptive. irq_break_affinities() might
>> describe it quite well, but feel free to come up with soemthing better.
>
> I don't think "irq_break_affinities" is anywhere near a good name - it's
> not about always breaking affinities (moving an IRQ off one CPU onto
> another within the current affinity setting does not break the affinity.)
>
> irq_migrate_all()
>
> irq_migrate_all_off_this_cpu()
>
> irq_this_cpu_hotunplug()
>
> irq_cpu_hotunplug()
>

irq_migrate_all_off_this_cpu() describe it well, I will choose it.

Thanks,
Yang

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