From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephane Eranian Date: Mon, 13 Mar 2006 18:55:00 +0000 Subject: Re: [Perfctr-devel] 2.6.16-rc5 perfmon2 new code base + libpfm with Montecito support Message-Id: <20060313185500.GB32683@frankl.hpl.hp.com> List-Id: References: <20060308155311.GD13168@frankl.hpl.hp.com> <4415BC45.1010601@nc.rr.com> In-Reply-To: <4415BC45.1010601@nc.rr.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: William Cohen Cc: linux-kernel@vger.kernel.org, perfmon@napali.hpl.hp.com, perfctr-devel@lists.sourceforge.net, linux-ia64@vger.kernel.org Will, On Mon, Mar 13, 2006 at 01:39:01PM -0500, William Cohen wrote: > Hi Stephane, > > I have been looking through the perfmon2 code to see how it is going to > work with OProfile. It looks like the ia64 oprofile support has not been > modified to work with the changes in perfmon2. Has the ia64 kernel been > built with perfmon2 and oprofile support? I don't have easy access to an > ia64, so I haven't been able to verify that the attached patch works. > However, I expect that the changes in the patch will be required for > OProfile to function with perfmon2. > Good timing. I just fixed this today. Now it compiles fine on IA64. I also started looking into using the same technique on i386. It is very easy. It looks like opcontrol or ophelp would need to be updated. I think the trick is to make sure that ophelp knows the PMU mapping used by perfmon2, i.e., knows that PERFEVTSEL0 is PMC0 for instance. -- -Stephane