linux-kernel - Re: [Perfctr-devel] [patch] Performance Counters for Linux, v4

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Message-ID: <20081216154655.GB32787@cons.org>
Date:	Tue, 16 Dec 2008 10:46:55 -0500
From:	Martin Cracauer <cracauer@...s.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"David S. Miller" <davem@...emloft.net>,
	Robert Richter <robert.richter@....com>,
	Eric Dumazet <dada1@...mosbay.com>,
	Stephane Eranian <eranian@...glemail.com>,
	Paul Mackerras <paulus@...ba.org>, Peter Anvin <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	perfctr-devel@...ts.sourceforge.net,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: [Perfctr-devel] [patch] Performance Counters for Linux, v4

Ingo Molnar wrote on Sun, Dec 14, 2008 at 10:28:29PM +0100: 
> We are pleased to announce the v4 release of our performance counters 
> subsystem implementation. The kernel changes can be picked up from:
> 
>    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git perfcounters/core
> 
>   (also in the master branch. There's also a kernel patch attached 
>    below.)
> 
> The biggest new feature in this release is the implementation of 
> "performance counter inheritance" for the per task counters: the ability 
> to extend performance counters to cover the execution of child tasks 
> too, transparently and automatically - following them to other CPUs.

Does this come with a PAPI frontend or is one planned?

I picked the old perfctr mainly because I need PAPI.  Outside-process
measurement doesn't do for my application, I need subdivisions in my
code.

Thanks
	Martin
-- 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Martin Cracauer <cracauer@...s.org>   http://www.cons.org/cracauer/
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