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Date: Wed, 16 Sep 2015 10:13:06 +0200 (CEST)
From: Thomas Gleixner <tglx@linutronix.de>
To: Yang Yingliang <yangyingliang@huawei.com>
cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Jiang Liu <jiang.liu@linux.intel.com>,
        Marc Zyngier <marc.zyngier@arm.com>,
        Mark Rutland <mark.rutland@arm.com>, Will Deacon <will.deacon@arm.com>,
        Russell King - ARM Linux <linux@arm.linux.org.uk>,
        Hanjun Guo <hanjun.guo@linaro.org>
Subject: Re: [RFC PATCH v3 1/3] genirq: introduce
 CONFIG_GENERIC_IRQ_MIGRATION
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On Wed, 16 Sep 2015, Yang Yingliang wrote:
> diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
> index 78c0621..4133070 100644
> --- a/arch/arc/Kconfig
> +++ b/arch/arc/Kconfig
> @@ -20,6 +20,7 @@ config ARC
>  	# for now, we don't need GENERIC_IRQ_PROBE, CONFIG_GENERIC_IRQ_CHIP
>  	select GENERIC_IRQ_SHOW
>  	select GENERIC_PENDING_IRQ if SMP
> +	select GENERIC_IRQ_MIGRATION if SMP

What's the point of this?

> --- a/kernel/irq/Kconfig
> +++ b/kernel/irq/Kconfig
> @@ -30,6 +30,10 @@ config GENERIC_IRQ_LEGACY_ALLOC_HWIRQ
>  config GENERIC_PENDING_IRQ
>  	bool

+	select GENERIC_IRQ_MIGRATION

Will do it automatically without touching any of the arch Kconfig
files.

Thanks,

	tglx