linux-kernel - Re: [PATCH 2/2] tracing: identify which executable object the userspace address belongs to

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Date:	Thu, 27 Nov 2008 11:41:45 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	"Frank Ch. Eigler" <fche@...hat.com>
Cc:	Török Edwin <edwintorok@...il.com>,
	mingo@...e.hu, srostedt@...hat.com, sandmann@...mi.au.dk,
	linux-kernel@...r.kernel.org, viro@...IV.linux.org.uk
Subject: Re: [PATCH 2/2] tracing: identify which executable object the
 userspace address belongs to

On Tue, 2008-11-25 at 09:40 -0500, Frank Ch. Eigler wrote:
> =?utf-8?q?T=C3=B6r=C3=B6k=20Edwin?= <edwintorok@...il.com> writes:
> 
> > Impact: modify+improve the userstacktrace tracing visualization feature
> > [...]
> > You'll see stack entries like:
> >    /lib/libpthread-2.7.so[+0xd370]
> > [...]
> 
> Can you suggest an actual distribution & architecture where this
> facility may be tested/used?  It appears to require frame-pointer
> stuff that AFAIK is not generally turned on for user-space.

gentoo, just rebuild world with frame pointers ;-)

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