linux-kernel - Re: [PATCH -next] x86 msrs: alloc/free for CONFIG

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Date:	Wed, 16 Dec 2009 22:58:08 +0100
From:	Borislav Petkov <petkovbb@...glemail.com>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Borislav Petkov <borislav.petkov@....com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] x86 msrs: alloc/free for CONFIG_SMP=n

On Wed, Dec 16, 2009 at 01:51:19PM -0800, Randy Dunlap wrote:
> From: Randy Dunlap <randy.dunlap@...cle.com>
> 
> Rearrange arch/x86/lib/msr.c so that alloc/free are built and
> usable when CONFIG_SMP=n.  Fixes build of amd64_edac.
> 
> ERROR: "msrs_free" [drivers/edac/amd64_edac_mod.ko] undefined!
> ERROR: "msrs_alloc" [drivers/edac/amd64_edac_mod.ko] undefined!
>
> ---
>  arch/x86/lib/Makefile |    2 -
>  arch/x86/lib/msr.c    |   42 ++++++++++++++++++++--------------------
>  2 files changed, 23 insertions(+), 21 deletions(-)

Haha, I just sent a very similar one :)

> 
> --- linux-next-20091216.orig/arch/x86/lib/Makefile
> +++ linux-next-20091216/arch/x86/lib/Makefile
> @@ -14,7 +14,7 @@ $(obj)/inat.o: $(obj)/inat-tables.c
>  
>  clean-files := inat-tables.c
>  
> -obj-$(CONFIG_SMP) := msr.o
> +obj-$(CONFIG_X86_MSR) := msr.o

however, CONFIG_X86_MSR is the x86 MSR access module and the <lib/msr.c>
is the library of MSR accessing functions which is always in. So this
should be unconditional as in my version or Peter might have a better
idea...?

-- 
Regards/Gruss,
    Boris.
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