From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: [Bug #16399] perf failed with kernel 2.6.35-rc Date: Mon, 30 Aug 2010 11:12:43 +0200 Message-ID: <1283159563.1820.665.camel@laptop> References: Mime-Version: 1.0 Content-Transfer-Encoding: 8BIT Return-path: In-Reply-To: Sender: kernel-testers-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="us-ascii" To: "Rafael J. Wysocki" Cc: Linux Kernel Mailing List , Kernel Testers List , Maciej Rutecki , "Zhang, Yanmin" On Mon, 2010-08-30 at 01:13 +0200, Rafael J. Wysocki wrote: > This message has been generated automatically as a part of a report > of regressions introduced between 2.6.34 and 2.6.35. > > The following bug entry is on the current list of known regressions > introduced between 2.6.34 and 2.6.35. Please verify if it still should > be listed and let the tracking team know (either way). > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=16399 > Subject : perf failed with kernel 2.6.35-rc > Submitter : Zhang, Yanmin > Date : 2010-07-13 8:14 (48 days old) > First-Bad-Commit: http://git.kernel.org/linus/1ac62cfff252fb668405ef3398a1fa7f4a0d6d15 > Message-ID : <1279008849.2096.913.camel-sz7BYL/Y5Hu/P+R7jlPCFVaTQe2KTcn/@public.gmane.org> > References : http://marc.info/?l=linux-kernel&m=127900880212470&w=2 > > Should be fixed by: commit 351af0725e5222e35741011d1ea62215c1ed06db Author: Zhang, Yanmin Date: Fri Aug 6 13:39:08 2010 +0800 perf, x86: Fix Intel-nhm PMU programming errata workaround Fix the Errata AAK100/AAP53/BD53 workaround, the officialy documented workaround we implemented in: 11164cd: perf, x86: Add Nehelem PMU programming errata workaround doesn't actually work fully and causes a stuck PMU state under load and non-functioning perf profiling. A functional workaround was found by trial & error. Affects all Nehalem-class Intel PMUs. Signed-off-by: Zhang Yanmin Signed-off-by: Peter Zijlstra LKML-Reference: <1281073148.2125.63.camel-sz7BYL/Y5Hu/P+R7jlPCFVaTQe2KTcn/@public.gmane.org> Cc: Arjan van de Ven Cc: "H. Peter Anvin" Cc: # .35.x Signed-off-by: Ingo Molnar