linux-kernel - Re: [RFC PATCH v3 1/3] genirq: introduce CONFIG_GENERIC_IRQ

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Date:	Wed, 16 Sep 2015 10:13:06 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Yang Yingliang <yangyingliang@...wei.com>
cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	Marc Zyngier <marc.zyngier@....com>,
	Mark Rutland <mark.rutland@....com>,
	Will Deacon <will.deacon@....com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Hanjun Guo <hanjun.guo@...aro.org>
Subject: Re: [RFC PATCH v3 1/3] genirq: introduce
 CONFIG_GENERIC_IRQ_MIGRATION

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
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