From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Mundt Subject: Re: [patch 0/3] [Announcement] Performance Counters for Linux Date: Wed, 10 Dec 2008 19:23:36 +0900 Message-ID: <20081210102335.GA30942@linux-sh.org> References: <20081205.002701.172921476.davem@davemloft.net> <20081205084233.GE2030@elte.hu> <87ej0mx0c0.fsf@basil.nowhere.org> <20081205.120814.51226316.davem@davemloft.net> <20081210034824.GA27217@linux-sh.org> <20081210102819.GF23556@one.firstfloor.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mta23.gyao.ne.jp ([125.63.38.249]:42936 "EHLO mx.gate01.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751838AbYLJKZn (ORCPT ); Wed, 10 Dec 2008 05:25:43 -0500 Content-Disposition: inline In-Reply-To: <20081210102819.GF23556@one.firstfloor.org> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Andi Kleen Cc: David Miller , mingo@elte.hu, a.p.zijlstra@chello.nl, paulus@samba.org, tglx@linutronix.de, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, akpm@linux-foundation.org, eranian@googlemail.com, dada1@cosmosbay.com, robert.richter@amd.com, arjan@infradead.org, hpa@zytor.com, rostedt@goodmis.org On Wed, Dec 10, 2008 at 11:28:19AM +0100, Andi Kleen wrote: > > Oprofile has been a pretty bad fit for them, and while I'm slightly more > > You could always use a extension of timer mode that reads them > periodically? > This is what I do today, but it is not an ideal solution. It would be nice if these sorts of use cases could be supported by newer frameworks without every platform with similar requirements having to implement workarounds hanging off of the timer IRQ.