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