linux-kernel - Re: [PATCH] Introducing asm/syscalls.h

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Date:	Sun, 20 Jul 2008 11:00:39 +0100
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	Jaswinder Singh <jaswinder@...radead.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	David Woodhouse <dwmw2@...radead.org>, rth@...ddle.net,
	rmk@....linux.org.uk, hskinnemoen@...el.com, cooloney@...nel.org,
	starvik@...s.com, dhowells@...hat.com, ysato@...rs.sourceforge.jp,
	tony.luck@...el.com, takata@...ux-m32r.org, geert@...ux-m68k.org,
	matthew@....cx, schwidefsky@...ibm.com, lethal@...ux-sh.org,
	chris@...kel.net
Subject: Re: [PATCH] Introducing asm/syscalls.h

On Sun, Jul 20, 2008 at 02:39:00PM +0530, Jaswinder Singh wrote:
> From: Jaswinder Singh <jaswinder@...radead.org>
> Date: Sun, 20 Jul 2008 14:39:00 +0530
> To: LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
> 	David Woodhouse <dwmw2@...radead.org>, rth@...ddle.net,
> 	rmk@....linux.org.uk, hskinnemoen@...el.com, cooloney@...nel.org,
> 	starvik@...s.com, dhowells@...hat.com, ysato@...rs.sourceforge.jp,
> 	tony.luck@...el.com, takata@...ux-m32r.org, geert@...ux-m68k.org,
> 	ralf@...ux-mips.org, dhowells@...hat.com, matthew@....cx,
> 	schwidefsky@...ibm.com, lethal@...ux-sh.org, chris@...kel.net
> Subject: [PATCH] Introducing asm/syscalls.h
> Content-Type: text/plain
> 
> 
> Declaring arch-dependent syscalls for all architectures
> Beneficial for kernel and userspace
> 
> Signed-off-by: Jaswinder Singh <jaswinder@...radead.org>

You write beneficial for userspace - but don't add <asm/syscall.h> to
include/asm-generic/Kbuild.asm.  Fortunately.  I doubt there is any good
reason for userspace to know about kernel prototypes.  For configurations
where userspace and kernel API differ - think 32-bit code running on a
64-bit kernel or similar - that would be a receipe for disaster.

Acked-by: Ralf Baechle <ralf@...ux-mips.org>

  Ralf
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