Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753692AbaFWLj4 (ORCPT ); Mon, 23 Jun 2014 07:39:56 -0400 Received: from casper.infradead.org ([85.118.1.10]:47049 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753295AbaFWLjz (ORCPT ); Mon, 23 Jun 2014 07:39:55 -0400 Date: Mon, 23 Jun 2014 13:39:53 +0200 From: Peter Zijlstra To: Stephane Eranian Cc: LKML , "mingo@elte.hu" , "ak@linux.intel.com" , Joe Mario , Don Zickus , Jiri Olsa , Arnaldo Carvalho de Melo Subject: Re: [PATCH 2/2] perf/x86: fix constraints for load latency and precise events Message-ID: <20140623113953.GE13930@laptop.programming.kicks-ass.net> References: <1403193509-22393-1-git-send-email-eranian@google.com> <1403193509-22393-3-git-send-email-eranian@google.com> <20140623084254.GK19860@laptop.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 23, 2014 at 11:00:18AM +0200, Stephane Eranian wrote: > You can say the same with PREC_DIST which up until HSW needs to be > taken alone, i.e., no other event active. We don't enforce that either, it would > cause problems with the NMI watchdog. Yeah, the SDM states no other PEBS event, so the NMI watchdog would be fine, but we do indeed not have any means of excluding other PEBS events, only all other events. -- 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/