Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763475AbXKMVer (ORCPT ); Tue, 13 Nov 2007 16:34:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761992AbXKMVeQ (ORCPT ); Tue, 13 Nov 2007 16:34:16 -0500 Received: from madara.hpl.hp.com ([192.6.19.124]:52566 "EHLO madara.hpl.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760288AbXKMVeO (ORCPT ); Tue, 13 Nov 2007 16:34:14 -0500 Date: Tue, 13 Nov 2007 13:33:13 -0800 From: Stephane Eranian To: Greg KH Cc: Philip Mucci , William Cohen , akpm@osdl.org, Robert Richter , linux-kernel@vger.kernel.org, Perfmon , Andi Kleen , perfmon2-devel@lists.sourceforge.net, OSPAT devel , papi list , perfmon@napali.hpl.hp.com Subject: Re: [perfmon] Re: [perfmon2] perfmon2 merge news Message-ID: <20071113213313.GD5747@frankl.hpl.hp.com> Reply-To: eranian@hpl.hp.com References: <20071107003454.GA13374@kroah.com> <20071109120627.60ec9ab4.akpm@linux-foundation.org> <20071109213829.GC28276@kroah.com> <20071113151718.GA3804@erda.amd.com> <4739C42F.8030208@redhat.com> <20071113175545.GD4319@frankl.hpl.hp.com> <53F4663B-CFBA-44E4-8283-BAAC8C8F1AFF@cs.utk.edu> <20071113185924.GA22748@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071113185924.GA22748@suse.de> User-Agent: Mutt/1.4.1i Organisation: HP Labs Palo Alto Address: HP Labs, 1U-17, 1501 Page Mill road, Palo Alto, CA 94304, USA. E-mail: eranian@hpl.hp.com X-HPL-MailScanner: Found to be clean X-HPL-MailScanner-From: eranian@hpl.hp.com Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2032 Lines: 53 Greg, On Tue, Nov 13, 2007 at 10:59:24AM -0800, Greg KH wrote: > On Tue, Nov 13, 2007 at 10:47:45AM -0800, Philip Mucci wrote: > > Hi folks, > > > > Well, I can say the mood here at supercomputing'07 is pretty somber in > > regards to the latest exchange of messages regarding the perfmon patches. > > "somber"? > I am the core developer of this and I am not as pessimistic as Phil. Yet I admit Phil has been asking for this kind of kernel interface for a very very long time ;-< > Why? > > We (a number of the kernel developers) want to see the perfmon code make > it into the kernel tree, unfortunatly, in the current state it is in, > that's not going to happen. > > Andi specified a way that this can happen, just refactor your patches > into smaller bits that can be reviewed and applied. > I think I understand your concerns. I will work on this. I think it is possible to refactor. It will certainly be painful (for me), but I think it can be done within some reasonable delay. Of course, it would be help if you could better qualify what you mean by 'smaller'. > If you, or anyone else has any questions about this, please let us know. > So far, I have not seen any response to his message, so I'm guessing > that the perfmon developers either are off working on this, or don't > care. > I will start working on this once I fix the tickless/hrtimer issues. > And if they don't care, then yes, I agree with your "somber" feeling... > I do care a lot actually. Believe me, I do spend a lot of effort and energy on this project everyday, like many others around the world, and I intend for it to succeed. We have reached a point in the development of processor hardware where this kind of features is crucial and it is not just for HPC folks anymore. -- -Stephane - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/