linux-kernel - Re: [PATCH -tip, final] perf, x86: Add hw_watchdog_set

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Message-ID: <1309875617.3282.213.camel@twins>
Date:	Tue, 05 Jul 2011 16:20:17 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Cyrill Gorcunov <gorcunov@...il.com>,
	Don Zickus <dzickus@...hat.com>,
	Stephane Eranian <eranian@...gle.com>,
	Lin Ming <ming.m.lin@...el.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -tip, final] perf, x86: Add hw_watchdog_set_attr() in a
 sake of nmi-watchdog on P4

On Tue, 2011-07-05 at 15:31 +0200, Ingo Molnar wrote:
> Secondly, the proper solution would be to allow the multiplexing of 
> like-minded hw events. 

Right, that's something that's been mentioned before (wasn't that akpm
who asked that?). Anyway that's terribly non-trivial, but I guess we can
minimize impact on the sample fast-path by using a custom overflow
handler for those.

/me gets a migraine just thinking about how to implement that ;-)
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