linux-kernel - Re: [patch 1/2] x86: apic: Export symbols for extended interrupt LVT functions

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Message-ID: <20080214094036.GA16892@erda.amd.com>
Date:	Thu, 14 Feb 2008 10:40:36 +0100
From:	"Robert Richter" <robert.richter@....com>
To:	"Arjan van de Ven" <arjan@...radead.org>
cc:	"Thomas Gleixner" <tglx@...utronix.de>,
	"Ingo Molnar" <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>,
	"LKML" <linux-kernel@...r.kernel.org>
Subject: Re: [patch 1/2] x86: apic: Export symbols for extended
 interrupt LVT functions

On 13.02.08 14:32:56, Arjan van de Ven wrote:
> On Wed, 13 Feb 2008 16:19:36 +0100 (CET)
> "Robert Richter" <robert.richter@....com> wrote:
> 
> > Signed-off-by: Robert Richter <robert.richter@....com>
> > ---
> >  arch/x86/kernel/apic_64.c |    2 ++
> >  1 files changed, 2 insertions(+), 0 deletions(-)
> > 
> > diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
> > index d8d03e0..2a9f4bc 100644
> > --- a/arch/x86/kernel/apic_64.c
> > +++ b/arch/x86/kernel/apic_64.c
> > @@ -215,12 +215,14 @@ u8 setup_APIC_eilvt_mce(u8 vector, u8 msg_type,
> > u8 mask) setup_APIC_eilvt(APIC_EILVT_LVTOFF_MCE, vector, msg_type,
> > mask); return APIC_EILVT_LVTOFF_MCE;
> >  }
> > +EXPORT_SYMBOL(setup_APIC_eilvt_mce);
> >  
> >  u8 setup_APIC_eilvt_ibs(u8 vector, u8 msg_type, u8 mask)
> >  {
> >  	setup_APIC_eilvt(APIC_EILVT_LVTOFF_IBS, vector, msg_type,
> > mask); return APIC_EILVT_LVTOFF_IBS;
> >  }
> > +EXPORT_SYMBOL(setup_APIC_eilvt_ibs);
> 
> which modules would even consider using any of these?
> Doesn't sound like something we should export..

For IBS it is Perfmon. See here:
http://git.kernel.org/?p=linux/kernel/git/eranian/linux-2.6.git;a=commit;h=7caef3e19d17349f869884f5adf7c9823e32ade7

MCE export has been added for consistency reasons to allow modules to
enable MCE.

-Robert

-- 
Advanced Micro Devices, Inc.
Operating System Research Center
email: robert.richter@....com


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