linux-kernel - Re: [PATCH 19/22] 2.6.22-rc3 perfmon2 : modified x86

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Message-ID: <20070531142038.GB2538@one.firstfloor.org>
Date:	Thu, 31 May 2007 16:20:38 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Stephane Eranian <eranian@....hp.com>
Cc:	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 19/22] 2.6.22-rc3 perfmon2 : modified x86_64 files

On Thu, May 31, 2007 at 07:16:00AM -0700, Stephane Eranian wrote:
> This is it. the check for uncommon bits is below (_TIF_WORK_CTXSW). Then
> we need to check each uncommon bits (done above). Did you have something else
> in mind?

Ah it's ok sorry.

> > Just use a cpu notifier instead. No need to add everybody's per cpu init code here.
> 
> The code must run on the CPU that is being initialized.

smp_call_function_single() 

> > 
> > No compat syscalls? 
> > 
> compat syscalls for what? I need to ensure backward compatiblity on IA-64 only.

For 32bit / i386 code.

-Andi
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