Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756578AbYKUQLT (ORCPT ); Fri, 21 Nov 2008 11:11:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752609AbYKUQLK (ORCPT ); Fri, 21 Nov 2008 11:11:10 -0500 Received: from mga02.intel.com ([134.134.136.20]:57239 "EHLO mga02.intel.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1752418AbYKUQLJ convert rfc822-to-8bit (ORCPT ); Fri, 21 Nov 2008 11:11:09 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.33,644,1220252400"; d="scan'208";a="362794734" From: "Metzger, Markus T" To: "eranian@gmail.com" CC: Markus Metzger , Ingo Molnar , Andi Kleen , Andrew Morton , "linux-kernel@vger.kernel.org" Date: Fri, 21 Nov 2008 16:10:59 +0000 Subject: RE: debugctl msr Thread-Topic: debugctl msr Thread-Index: AclL7hRqOGq8mGFISlOzoBZwnqhT6QABUVdQ Message-ID: <928CFBE8E7CB0040959E56B4EA41A77E08F3B93D@irsmsx504.ger.corp.intel.com> References: <7c86c4470810300753v7d377092qbcd266178d8e7338@mail.gmail.com> <7c86c4470811190459y5996f51bp24ab38c9e856c2eb@mail.gmail.com> <928CFBE8E7CB0040959E56B4EA41A77E08F10CB1@irsmsx504.ger.corp.intel.com> <7c86c4470811190913u743706abgafff3b0f0e3559ec@mail.gmail.com> <1227119245.6025.12.camel@raistlin> <7c86c4470811191120i63b70970s3e24af5c962ea538@mail.gmail.com> <1227133570.6104.10.camel@raistlin> <7c86c4470811201319x2eb93d41vbdd8ce480a797fab@mail.gmail.com> <928CFBE8E7CB0040959E56B4EA41A77E08F115BC@irsmsx504.ger.corp.intel.com> <7c86c4470811210538i5e6958e1p2c31effa762f5914@mail.gmail.com> <7c86c4470811210727o13006d5bk5bcbacb791e51b1c@mail.gmail.com> In-Reply-To: <7c86c4470811210727o13006d5bk5bcbacb791e51b1c@mail.gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1645 Lines: 45 >-----Original Message----- >From: stephane eranian [mailto:eranian@googlemail.com] >Sent: Freitag, 21. November 2008 16:27 >To: Metzger, Markus T >Cc: Markus Metzger; Ingo Molnar; Andi Kleen; Andrew Morton; >linux-kernel@vger.kernel.org >Subject: Re: debugctl msr >The absolute maximum MUST be at buffer+size+1 but the >threshold can be anywhere >between the start of the buffer and buffer+size. You had it set past >the end of the buffer (at +1), >therefore PEBS was not generating any interrupts. The default is cyclic mode, which requires the interrupt threshold to be outside of the buffer. A request for interrupt mode should have got you -EOPNOTSUPP. Absolute max should be one byte beyond the buffer, which is base + size. regards, markus. --------------------------------------------------------------------- Intel GmbH Dornacher Strasse 1 85622 Feldkirchen/Muenchen Germany Sitz der Gesellschaft: Feldkirchen bei Muenchen Geschaeftsfuehrer: Douglas Lusk, Peter Gleissner, Hannes Schwaderer Registergericht: Muenchen HRB 47456 Ust.-IdNr. VAT Registration No.: DE129385895 Citibank Frankfurt (BLZ 502 109 00) 600119052 This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. -- 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/