linux-kernel - Re: [PATCH 5/5] oprofile, x86: Reimplement nmi timer mode using perf

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Message-ID: <1318935581.21167.13.camel@twins>
Date:	Tue, 18 Oct 2011 12:59:41 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Robert Richter <robert.richter@....com>
Cc:	Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>,
	oprofile-list <oprofile-list@...ts.sourceforge.net>
Subject: Re: [PATCH 5/5] oprofile, x86: Reimplement nmi timer mode using perf

On Mon, 2011-10-17 at 16:27 +0200, Robert Richter wrote:
> The legacy x86 nmi watchdog code was removed with the implementation
> of the perf based nmi watchdog. This broke Oprofile's nmi timer
> mode. To run nmi timer mode we relied on a continuous ticking nmi
> source which the nmi watchdog provided. The nmi tick was no longer
> available and current watchdog can not be used anymore since it runs
> with very long periods in the range of seconds. This patch
> reimplements the nmi timer mode using a perf counter nmi source.

fair enough,

Acked-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>

I take it you'll take this through your oprofile tree?
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