linux-kernel - Re: [PATCH 2/3] Kprobes: Define retval helper

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Message-ID: <p738xlyo76g.fsf@verdi.suse.de>
Date:	09 Aug 2006 06:37:59 +0200
From:	Andi Kleen <ak@...e.de>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	linux-kernel@...r.kernel.org,
	Prasanna S Panchamukhi <prasanna@...ibm.com>,
	Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
	Jim Keniston <jkenisto@...ibm.com>
Subject: Re: [PATCH 2/3] Kprobes: Define retval helper

Christoph Hellwig <hch@...radead.org> writes:

> On Mon, Aug 07, 2006 at 05:30:24PM +0530, Ananth N Mavinakayanahalli wrote:
> > From: Ananth N Mavinakayanahalli <ananth@...ibm.com>
> > 
> > Add the KPROBE_RETVAL macro to help extract the return value on
> > different architectures, while using function-return probes.
> 
> Good idea.  You should add parentheses around regs, otherwise the C
> preprocessor might bite users.  Also the shouting name is quite ugly.
> In fact it should probably go to asm/system.h or similar

The other macros like this (instruction_pointer etc) are in asm/ptrace.h

-Andi
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