linux-kernel - Re: [RFC][PATCH 07/12] perf: Simplify/fix perf_event

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Message-ID: <20160308112927.GG6356@twins.programming.kicks-ass.net>
Date:	Tue, 8 Mar 2016 12:29:27 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	James Morse <james.morse@....com>
Cc:	mingo@...nel.org, alexander.shishkin@...ux.intel.com,
	eranian@...gle.com, linux-kernel@...r.kernel.org, vince@...ter.net,
	dvyukov@...gle.com, andi@...stfloor.org, jolsa@...hat.com,
	Mark Rutland <mark.rutland@....com>,
	Will Deacon <Will.Deacon@....com>, wangxg.fnst@...fujitsu.com
Subject: Re: [RFC][PATCH 07/12] perf: Simplify/fix perf_event_enable() event
 scheduling

On Tue, Mar 08, 2016 at 10:42:12AM +0000, James Morse wrote:
> On 08/03/16 10:26, Peter Zijlstra wrote:
> > In any case, please try -rc6, which includes:
> 
> Bother, I should have thought to test with the later rcs, I foolishly stopped
> with rc5.
> 
> >   a096309bc467 perf: Fix scaling vs. perf_install_in_context()
> >   bd2afa49d194 perf: Fix scaling vs. perf_event_enable()
> >   7fce250915ef perf: Fix scaling vs. perf_event_enable_on_exec()
> >   3cbaa5906967 perf: Fix ctx time tracking by introducing EVENT_TIME
> > 
> > Which might fix this.
> 
> Yes, one of these has fixed the issue. For arm64 it no longer shows up with
> v4.5-rc6.

Awesome, one less worry ;-)

> Sorry for the noise!

No problem.