linux-kernel - Re: [PATCH v6 3/4] perf,x86: add Intel RAPL PMU support

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Message-ID: <20131112150200.GB3499@tassilo.jf.intel.com>
Date:	Tue, 12 Nov 2013 07:02:00 -0800
From:	Andi Kleen <ak@...ux.intel.com>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Jiri Olsa <jolsa@...hat.com>,
	"Yan, Zheng" <zheng.z.yan@...el.com>,
	Borislav Petkov <bp@...en8.de>,
	Maria Dimakopoulou <maria.n.dimakopoulou@...il.com>
Subject: Re: [PATCH v6 3/4] perf,x86: add Intel RAPL PMU support

> I don't know where Andi got that cpu starting was parallel now.
> Andi?

I know there was some work on it, but maybe it hasn't been merged yet.

> 
> If hotplug is not parallel, then we can drop that RAPL hotplug_lock
> I added.

I guess your patch is ok without lock for now, sorry for the objection.

-Andi
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