linux-kernel - Re: [patch 0/2] x86, ptrace: support for branch trace store(BTS)

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Message-ID: <20071130170655.GA10868@elte.hu>
Date:	Fri, 30 Nov 2007 18:06:55 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	"Metzger, Markus T" <markus.t.metzger@...el.com>
Cc:	Andi Kleen <ak@...e.de>, tglx@...utronix.de,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, hpa@...or.com,
	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	Michael Kerrisk <mtk-manpages@....net>,
	markus.t.metzger@...il.com, Roland McGrath <roland@...hat.com>
Subject: Re: [patch 0/2] x86, ptrace:  support for branch trace store(BTS)


* Metzger, Markus T <markus.t.metzger@...el.com> wrote:

> >> Not yet. We are talking to internal teams regarding gdb support.
> >
> >But you already have reasonably realistic test code right?
> 
> I wrote a small program to talk to ptrace and look at the trace of 
> small sample programs to test the patch. I do this on P4 32bit and 
> Core2 64bit.
> 
> Our debugger team has a prototype implementation for their debugger. 
> But that will not be available for some time.
> 
> I hope that we get gdb support, soon, but that would take a while if I 
> had to do it.

i'm wondering what the main use-case would be then, and what the gdb 
folks think about the current API. (Roland?)

	Ingo
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