linux-kernel - Re: [PATCH 08/21] perf: Add new 'paused' attribute

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Message-ID: <20130926122432.GC1067@krava.brq.redhat.com>
Date:	Thu, 26 Sep 2013 14:24:32 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH 08/21] perf: Add new 'paused' attribute

On Wed, Sep 25, 2013 at 03:41:47PM -0700, Sukadev Bhattiprolu wrote:
> Jiri Olsa [jolsa@...hat.com] wrote:
> | Adding new 'paused' perf_event_attr attribute bit. It sets
> | the initial event state as paused, so it wont get started
> | until it's triggered by toggling mechanism.
> 
> There is a attr->disabled field which also leaves the event off by
> default.  Some comments distinguishing the two states will help ?

right, so the 'disabled' says the event is created as disabled

the 'paused' says the event is enabled, it get's scheduled in/out
but it's does not get started.. toggle event will do that

I'll put more info on that into doc

thanks,
jirka
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