linux-kernel - Re: [PATCH 2/2] perf: Disable the event on a truncated AUX record

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Message-ID: <20160511094931.GD3190@twins.programming.kicks-ass.net>
Date:	Wed, 11 May 2016 11:49:31 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
	Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...hat.com>,
	linux-kernel@...r.kernel.org, vince@...ter.net, eranian@...gle.com,
	Arnaldo Carvalho de Melo <acme@...radead.org>
Subject: Re: [PATCH 2/2] perf: Disable the event on a truncated AUX record

On Wed, May 11, 2016 at 12:41:27PM +0300, Alexander Shishkin wrote:
> Peter Zijlstra <peterz@...radead.org> writes:
> >
> > Does the userspace tool know how to deal with this and re-enable it?
> 
> Yes, it knows to ioctl(EVENT_ENABLE). Also, we're already doing the
> disabling for the no-room-in-buffer condition in
> perf_aux_output_begin().

Awesome; gots them queued.