linux-kernel - Re: [PATCH v3 2/9] liblockdep: Wrap kernel/lockdep.c to allow usage from userspace

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Message-ID: <20130510135811.GB304@dyad.programming.kicks-ass.net>
Date:	Fri, 10 May 2013 15:58:12 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Sasha Levin <sasha.levin@...cle.com>
Cc:	torvalds@...ux-foundation.org, mingo@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/9] liblockdep: Wrap kernel/lockdep.c to allow usage
 from userspace

On Thu, May 09, 2013 at 11:58:02AM -0400, Sasha Levin wrote:
> +#ifndef CALLER_ADDR0
> +#define _THIS_IP_ CALLER_ADDR0
> +#define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
> +#endif

That's wrong.. _THIS_IP_ should be the address of 'here'. What you have there is _RET_IP_.


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