linux-kernel - Re: [PATCH -tip v3 2/5] perf: change perf_event_header.misc to PERF_RECORD_MISC

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Date:	Mon, 22 Aug 2011 11:02:51 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Akihiro Nagai <akihiro.nagai.hw@...achi.com>
Cc:	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	David Ahern <dsahern@...il.com>, linux-kernel@...r.kernel.org,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	yrl.pp-manager.tt@...achi.com, Paul Mackerras <paulus@...ba.org>
Subject: Re: [PATCH -tip v3 2/5] perf: change perf_event_header.misc to
 PERF_RECORD_MISC_USER for BTS

On Wed, 2011-08-17 at 11:19 +0900, Akihiro Nagai wrote:
> > So what's wrong with something like:
> >
> >       header.misc |= is_kernel_address(at->from) ?
> >                       PERF_RECORD_MISC_KERNEL :
> >                       PERF_RECORD_MISC_USER;
> >
> It looks good.
> However, current perf doesn't output "kernel to kernel" BTS records.
> So, it is unnecessary yet.
> 
Ah, right, I thought we cured that at some point, ok all clear now.
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