From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [203.10.76.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mx.ozlabs.org", Issuer "CA Cert Signing Authority" (verified OK)) by bilbo.ozlabs.org (Postfix) with ESMTPS id 6EBE3B729E for ; Fri, 19 Jun 2009 09:03:42 +1000 (EST) Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id BDC00DDD1C for ; Fri, 19 Jun 2009 09:03:41 +1000 (EST) Subject: Re: [PATCH 1/6] perf_counter: powerpc: Enable use of software counters on 32-bit powerpc From: Benjamin Herrenschmidt To: Ingo Molnar In-Reply-To: <20090617142719.GC6846@elte.hu> References: <19000.55404.103840.393470@cargo.ozlabs.ibm.com> <20090617142151.GB6846@elte.hu> <8C6954A9-BE4C-47F5-AD87-A1D0EAF43F8A@kernel.crashing.org> <20090617142719.GC6846@elte.hu> Content-Type: text/plain Date: Fri, 19 Jun 2009 09:03:24 +1000 Message-Id: <1245366204.8693.11.camel@pasglop> Mime-Version: 1.0 Cc: linuxppc-dev@ozlabs.org, Paul Mackerras , linux-kernel@vger.kernel.org, Peter Zijlstra List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Wed, 2009-06-17 at 16:27 +0200, Ingo Molnar wrote: > I think it would be nice to have more platform support in .31. > Perfcounters is a brand-new feature so there's no risk of > regression. In the end it will depend on Linus to pull of course, > and BenH can veto it too if he'd like no more PowerPC changes in > this cycle. Worst-case it's all .32 material. There have been little PowerPC changes in this cycle and I agree with you on that it's a nice feature to have with little risk of regression. In fact, I also have an up-to-date (and hopefully working) irqtrace/lockdep patch for 32-bit powerpc (we only do 64-bit right now) that I'm considering merging this time around, the benefit it brings is worth the risk I believe. Cheers, Ben.