linux-kernel - Re: [RFC] perf_events: support for uncore a.k.a. nest units

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Message-ID: <1271861637.1776.109.camel@laptop>
Date:	Wed, 21 Apr 2010 16:53:57 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Lin Ming <ming.m.lin@...el.com>
Cc:	"eranian@...il.com" <eranian@...il.com>,
	"Gary.Mohr@...l.com" <Gary.Mohr@...l.com>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] perf_events: support for uncore a.k.a. nest units

On Wed, 2010-04-21 at 22:38 +0000, Lin Ming wrote:
> 
> I add this ->stop_txn(pmu) because the rollback code also need to clear
> the state. 

Ah, yes, because strictly speaking ->enable() could still fail for
another reason. OK.

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