linux-kernel - Re: WARN_ONCE in arch/x86/kernel/hw

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Message-ID: <20130528184702.GA6455@redhat.com>
Date:	Tue, 28 May 2013 20:47:02 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Vince Weaver <vincent.weaver@...ne.edu>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	trinity@...r.kernel.org,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>
Subject: Re: WARN_ONCE in arch/x86/kernel/hw_breakpoint.c

On 05/28, Oleg Nesterov wrote:
>
> IIRC, I already tried to complain that perf could be smarter in this case
> and install a single counter with event->cpu = -1, but this is offtopic.

Just in case, please see my old email

	http://marc.info/?l=linux-kernel&m=136017983113299

I didn't check if perf was changed since then. And I forgot everything
(not too much ;) I learned after I briefly looked into tools/perf/.

But, again, this is off-topic.

Oleg.

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