linux-kernel - Re: [patch 2/3] x86, bts: provide in-kernel branch-trace interface

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Date:	Fri, 12 Dec 2008 08:11:05 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Markus Metzger <markus.t.metzger@...el.com>
Cc:	hpa@...or.com, linux-kernel@...r.kernel.org, tglx@...utronix.de,
	markus.t.metzger@...il.com, roland@...hat.com,
	akpm@...ux-foundation.org, eranian@...glemail.com
Subject: Re: [patch 2/3] x86, bts: provide in-kernel branch-trace interface


> --- gits.orig/include/linux/sched.h	2008-12-11 10:45:10.000000000 +0100
> +++ gits/include/linux/sched.h	2008-12-11 11:20:54.000000000 +0100
> @@ -1187,6 +1187,7 @@
>  	 * The buffer to hold the BTS data.
>  	 */
>  	void *bts_buffer;
> +    size_t bts_size;
>  #endif /* CONFIG_X86_PTRACE_BTS */

btw., this was whitespace damaged, i fixed that.

question: how does ->bts_buffer and ->bts_size behave across 
fork()/clone() ? I dont see it explicitly cleared in fork.c.

	Ingo
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