linux-kernel - Re: [PATCH] fix smp generic helper voyager breakage

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Message-ID: <20081030215421.GG30303@elte.hu>
Date:	Thu, 30 Oct 2008 22:54:21 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Jens Axboe <Jens.Axboe@...cle.com>
Subject: Re: [PATCH] fix smp generic helper voyager breakage


* James Bottomley <James.Bottomley@...senPartnership.com> wrote:

> +++ b/arch/x86/Kconfig
> @@ -167,9 +167,11 @@ config GENERIC_PENDING_IRQ
>  config X86_SMP
>  	bool
>  	depends on SMP && ((X86_32 && !X86_VOYAGER) || X86_64)
> -	select USE_GENERIC_SMP_HELPERS
>  	default y
>  
> +config USE_GENERIC_SMP_HELPERS
> +	def_bool y
> +

uhm, that's a bogus change - USE_GENERIC_SMP_HELPERS must not be set 
on UP. This will break all UP compilations, on all x86 UP boxes:

kernel/softirq.c: In function '__try_remote_softirq':
kernel/softirq.c:522: error: implicit declaration of function '__smp_call_function_single'

so i've removed your patch for now.

	Ingo
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