linux-kernel - Re: [perfmon] Re: [perfmon2] perfmon2 merge news

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Message-ID: <18235.37249.823703.12168@cargo.ozlabs.ibm.com>
Date:	Thu, 15 Nov 2007 11:23:29 +1100
From:	Paul Mackerras <paulus@...ba.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Stephane Eranian <eranian@....hp.com>,
	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg KH <gregkh@...e.de>, Philip Mucci <mucci@...utk.edu>,
	William Cohen <wcohen@...hat.com>,
	Robert Richter <robert.richter@....com>,
	linux-kernel@...r.kernel.org, Perfmon <perfmon@...ali.hpl.hp.com>,
	perfmon2-devel@...ts.sourceforge.net,
	OSPAT devel <ospat-devel@...utk.edu>,
	papi list <ptools-perfapi@...utk.edu>
Subject: Re: [perfmon] Re: [perfmon2] perfmon2 merge news

Andi Kleen writes:

> > This only works when counting (not sampling) and only for self-monitoring.
> 
> It works for global monitoring too.

How would you provide access to the counters of another process?
Through an extension to ptrace perhaps?

Paul.
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