From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,T_DKIM_INVALID autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by aws-us-west-2-korg-lkml-1.web.codeaurora.org (Postfix) with ESMTP id 20D71C004E4 for ; Wed, 13 Jun 2018 08:43:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CBC602086A for ; Wed, 13 Jun 2018 08:43:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="ERCbpXTV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CBC602086A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934945AbeFMInr (ORCPT ); Wed, 13 Jun 2018 04:43:47 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:57684 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933912AbeFMIno (ORCPT ); Wed, 13 Jun 2018 04:43:44 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=WRwka7I8U80u+EQQW6JiaPFOQ+MDkZMTZPrhU9KUQhI=; b=ERCbpXTVHn1MILw7mZ7Sh11KI KzpJEk7TFiyF1K1HeehQj/zvM6L/GbBsoHiqIy6x+9TdGU9eGIrJzWNL1U/HPmLRn4hLAwSm2v9Ml mTHhzTor5OaoXz4hP21ocByLYWPzG5UAQKrz/djCnY7/ONuSuDOvDIAyGsTiMrJeU74eT3ms6Bnvm LnRwm/m+8m87owleXV9RI9GcJSRulfL+DOV6WuQCOV5xAyOii1+Zqz9eVZdELXZXWUDiktrHAcOAe fbVHC+lPlZTmCjEvE9xeTgt1VB6ofRsymK85qr/T/WYsBPbKKA0zpoUasxISKDqavTbIKIvt2US1t C+OjxGs2w==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1fT1NF-0003Mn-QR; Wed, 13 Jun 2018 08:43:25 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 49D4A201EA7CB; Wed, 13 Jun 2018 10:43:24 +0200 (CEST) Date: Wed, 13 Jun 2018 10:43:24 +0200 From: Peter Zijlstra To: Ricardo Neri Cc: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Andi Kleen , Ashok Raj , Borislav Petkov , Tony Luck , "Ravi V. Shankar" , x86@kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Jacob Pan , Don Zickus , Nicholas Piggin , Michael Ellerman , Frederic Weisbecker , Babu Moger , "David S. Miller" , Benjamin Herrenschmidt , Paul Mackerras , Mathieu Desnoyers , Masami Hiramatsu , Andrew Morton , Philippe Ombredanne , Colin Ian King , "Luis R. Rodriguez" , iommu@lists.linux-foundation.org Subject: Re: [RFC PATCH 14/23] watchdog/hardlockup: Decouple the hardlockup detector from perf Message-ID: <20180613084324.GU12258@hirez.programming.kicks-ass.net> References: <1528851463-21140-1-git-send-email-ricardo.neri-calderon@linux.intel.com> <1528851463-21140-15-git-send-email-ricardo.neri-calderon@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1528851463-21140-15-git-send-email-ricardo.neri-calderon@linux.intel.com> User-Agent: Mutt/1.9.5 (2018-04-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 12, 2018 at 05:57:34PM -0700, Ricardo Neri wrote: > The current default implementation of the hardlockup detector assumes that > it is implemented using perf events. The sparc and powerpc things are very much not using perf.