From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752745Ab1GEOUb (ORCPT ); Tue, 5 Jul 2011 10:20:31 -0400 Received: from casper.infradead.org ([85.118.1.10]:39400 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752115Ab1GEOUa convert rfc822-to-8bit (ORCPT ); Tue, 5 Jul 2011 10:20:30 -0400 Subject: Re: [PATCH -tip, final] perf, x86: Add hw_watchdog_set_attr() in a sake of nmi-watchdog on P4 From: Peter Zijlstra To: Ingo Molnar Cc: Cyrill Gorcunov , Don Zickus , Stephane Eranian , Lin Ming , Arnaldo Carvalho de Melo , Frederic Weisbecker , LKML In-Reply-To: <20110705133105.GB5843@elte.hu> References: <20110705103403.GN17941@sun> <20110705105959.GA14435@elte.hu> <20110705110550.GQ17941@sun> <20110705112002.GA15654@elte.hu> <20110705113620.GS17941@sun> <20110705114437.GC15654@elte.hu> <20110705114944.GT17941@sun> <20110705121421.GU17941@sun> <20110705131005.GA5843@elte.hu> <1309871841.3282.148.camel@twins> <20110705133105.GB5843@elte.hu> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Tue, 05 Jul 2011 16:20:17 +0200 Message-ID: <1309875617.3282.213.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2011-07-05 at 15:31 +0200, Ingo Molnar wrote: > Secondly, the proper solution would be to allow the multiplexing of > like-minded hw events. Right, that's something that's been mentioned before (wasn't that akpm who asked that?). Anyway that's terribly non-trivial, but I guess we can minimize impact on the sample fast-path by using a custom overflow handler for those. /me gets a migraine just thinking about how to implement that ;-)