linux-kernel - Re: [patch] inherited events not signalling parent on overflow

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Message-ID: <alpine.DEB.2.11.1505291243340.2051@vincent-weaver-1.umelst.maine.edu>
Date:	Fri, 29 May 2015 12:45:15 -0400 (EDT)
From:	Vince Weaver <vincent.weaver@...ne.edu>
To:	Peter Zijlstra <peterz@...radead.org>
cc:	Vince Weaver <vincent.weaver@...ne.edu>,
	linux-kernel@...r.kernel.org, mingo@...nel.org, eranian@...gle.com,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: Re: [patch] inherited events not signalling parent on overflow


On Thu, 28 May 2015, Peter Zijlstra wrote:

> What could maybe work -- I'd have to check the code -- is open a
> per-task-per-cpu counter for every cpu. Those we could inherit -- if we
> currently allow it I'm not sure of.

yes, that seems to work.  It's a bit of a pain having to juggle so many 
buffers, but that's much better than not being able to measure at all.

Vince


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