linux-kernel - Re: [PATCH] [x86-64] Add getcpu and epoll

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Message-ID: <20070509084324.GB15315@flint.arm.linux.org.uk>
Date:	Wed, 9 May 2007 09:43:24 +0100
From:	Russell King <rmk+lkml@....linux.org.uk>
To:	Chris Wedgwood <cw@...f.org>
Cc:	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [x86-64] Add getcpu and epoll_pwait system calls.

On Tue, May 08, 2007 at 03:43:22PM -0700, Chris Wedgwood wrote:
> On Wed, May 09, 2007 at 12:24:32AM +0200, Andi Kleen wrote:
> 
> > Somehow yes.  But i'm not going to add a useless syscall just to
> > shut it up.
> 
> It turns out this has come up in other places.  Sam has a suggestion
> on how to silence this per-arch so I'll post a patch once that change
> is in.

We knew about this when David and myself designed the detection
method, and a method of ignoring those calls which were never going
to be implemented on a particular architecture.

Just add:

#define __IGNORE_getcpu

to asm/unistd.h, preferably in a __KERNEL__ protected area.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:
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