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

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Message-ID: <20070517002614.GU15763@ifa.hawaii.edu>
Date:	Wed, 16 May 2007 14:26:14 -1000
From:	Joshua Hoblitt <jhoblitt@....hawaii.edu>
To:	Daniel Drake <dsd@...too.org>
Cc:	davej@...hat.com, duaneg@...da.com, prakash@...noor.de,
	linux-kernel@...r.kernel.org, Ed Sweetman <safemode2@...cast.net>
Subject: Re: [PATCH] powernow-k8: depend on acpi-processor for SMP systems

I don't think this is quiet right either as Ed Sweetman has reported
that this issue doesn't occur on single socket/multi-core systems.

-J

--
On Thu, May 17, 2007 at 12:50:50AM +0100, Daniel Drake wrote:
> 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.

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