linux-kernel - Re: [tip:irq/core] genirq: Introduce generic irq migration for cpu hotunplug

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Date:	Thu, 1 Oct 2015 15:47:06 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	mark.rutland@....com, jiang.liu@...ux.intel.com,
	linux@....linux.org.uk, mingo@...nel.org, marc.zyngier@....com,
	will.deacon@....com, hanjun.guo@...aro.org,
	linux-kernel@...r.kernel.org, hpa@...or.com,
	linux-arm-kernel@...ts.infradead.org, yangyingliang@...wei.com,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:irq/core] genirq: Introduce generic irq migration for cpu
 hotunplug

On Thu, Oct 01, 2015 at 04:24:24PM +0200, Thomas Gleixner wrote:
> On Thu, 1 Oct 2015, tip-bot for Yang Yingliang wrote:
> 
> > Commit-ID:  f1e0bb0ad473a32d1b7e6d285ae9f7e47710bb5e
> > Gitweb:     http://git.kernel.org/tip/f1e0bb0ad473a32d1b7e6d285ae9f7e47710bb5e
> > Author:     Yang Yingliang <yangyingliang@...wei.com>
> > AuthorDate: Thu, 24 Sep 2015 17:32:13 +0800
> > Committer:  Thomas Gleixner <tglx@...utronix.de>
> > CommitDate: Thu, 1 Oct 2015 14:51:15 +0200
> > 
> > genirq: Introduce generic irq migration for cpu hotunplug
> > 
> > ARM and ARM64 have almost identical code for migrating interrupts on
> > cpu hotunplug. Provide a generic version which can be used by both.
> > 
> > The new code addresses a shortcoming in the ARM[64] variants which
> > fails to update the affinity change in some cases. The solution for
> > this is to use the core function irq_do_set_affinity() instead of open
> > coding it.
> > 
> > [ tglx: Added copyright notice and license boilerplate. Rewrote
> >   	subject and changelog. ]
> > 
> > Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
> > Acked-by: Russell King - ARM Linux <linux@....linux.org.uk>
> > Cc: Jiang Liu <jiang.liu@...ux.intel.com>
> > Cc: Marc Zyngier <marc.zyngier@....com>
> > Cc: Mark Rutland <mark.rutland@....com>
> > Cc: Will Deacon <will.deacon@....com>
> > Cc: Hanjun Guo <hanjun.guo@...aro.org>
> > Cc: <linux-arm-kernel@...ts.infradead.org>
> > Link: http://lkml.kernel.org/r/1443087135-17044-2-git-send-email-yangyingliang@huawei.com
> > Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> 
> Russell, Will,
> 
> I applied that to a seperate branch
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/for-arm
> 
> You can pull that into arm[64] so you can apply the architecture
> specific part.

Thanks. I'll queue the corresponding arm64 patch for 4.4.

-- 
Catalin
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