linux-kernel - Re: [PATCH v4 7/9] liblockdep: Support using LD

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Message-ID: <20130529111515.GG12193@twins.programming.kicks-ass.net>
Date:	Wed, 29 May 2013 13:15:15 +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 v4 7/9] liblockdep: Support using LD_PRELOAD

On Tue, May 28, 2013 at 03:35:36PM -0400, Sasha Levin wrote:
> On 05/22/2013 05:24 AM, Peter Zijlstra wrote:
> > Do we still need this with the glibc __pthread_* static initialization?
> 
> Sadly we do.
> 
> We need to deal with the two things that cause allocation in our code (because
> they loop back into our code via malloc()->malloc_init()->pthread_mutex_init() ).
> 
> The first one was the glibc trick to avoid the malloc() caused by dlsym(). The
> second one is the malloc() we do when we allocate new lock. Static allocation
> deals with that one.

OK.. fair enough
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