linux-kernel - Re: [PATCH] powernow-k8: depend on acpi-processor for SMP systems

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Message-ID: <20070517090227.GB3975@ucw.cz>
Date:	Thu, 17 May 2007 09:02:28 +0000
From:	Pavel Machek <pavel@....cz>
To:	Daniel Drake <dsd@...too.org>
Cc:	davej@...hat.com, duaneg@...da.com, prakash@...noor.de,
	jhoblitt@....hawaii.edu, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powernow-k8: depend on acpi-processor for SMP systems

Hi!

> powernow-k8 uses PSB BIOS tables to read frequency info on UP systems, but
> on SMP it requires the acpi-processor driver. Kconfig should be updated
> accordingly to avoid the issues that users are running into.
> 
> http://bugzilla.kernel.org/show_bug.cgi?id=8075
> https://bugs.gentoo.org/show_bug.cgi?id=178585
> 
> Signed-off-by: Daniel Drake <dsd@...too.org>
> 
> Index: linux/arch/i386/kernel/cpu/cpufreq/Kconfig
> ===================================================================
> --- linux.orig/arch/i386/kernel/cpu/cpufreq/Kconfig
> +++ linux/arch/i386/kernel/cpu/cpufreq/Kconfig
> @@ -81,6 +81,7 @@ config X86_POWERNOW_K7_ACPI
>  config X86_POWERNOW_K8
>  	tristate "AMD Opteron/Athlon64 PowerNow!"
>  	select CPU_FREQ_TABLE
> +	select ACPI_PROCESSOR if SMP
>  	depends on EXPERIMENTAL
>  	help
>  	  This adds the CPUFreq driver for mobile AMD Opteron/Athlon64 processors.

It is still possible to run SMP kernel on UP machine -- so this sounds
wrong.

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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