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=-5.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 65A31C34047 for ; Wed, 19 Feb 2020 16:03:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1BED824673 for ; Wed, 19 Feb 2020 16:03:47 +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="gRbtHsdx" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726756AbgBSQDq (ORCPT ); Wed, 19 Feb 2020 11:03:46 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:47548 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726651AbgBSQDp (ORCPT ); Wed, 19 Feb 2020 11:03:45 -0500 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; bh=JqMAMmw8mBmK17Px3HpOSkmtfqAbT6lmm4Y0zdln3UY=; b=gRbtHsdxI10YrBY9HvsffsrtV7 F+ojNkMevvnVWup+Qg9+CxYUoecJmPp1FFsiDdustsK7vEscyhXWOqnkbeMPVFfz1PBCojIc7oH0A S/MBtmrnXF6c6uUXP9I/DRiFqy5UymJce2atQbd7hzpScMiXJAD5oyN+6ySa4RwhazRR8a1gjAcBg POsVykBTzM213QwsZYWTjqJCNFl9iML0Xe5nkU5LEALvDO0IK6EIjGtrZjc+EAFStbcw4PfOFcfOy e4cxbmwblYrt5mvrW3V1Ak/ud5AsTV/3yYVICC7txx2aSY9QwF/xqOuaW9OlJifM3jVZrlUsDhdfh Lywn3fPA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1j4Rom-0000lm-Jw; Wed, 19 Feb 2020 16:03:20 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id F09833007F2; Wed, 19 Feb 2020 17:01:25 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 5E4C5201E47AE; Wed, 19 Feb 2020 17:03:18 +0100 (CET) Date: Wed, 19 Feb 2020 17:03:18 +0100 From: Peter Zijlstra To: Steven Rostedt Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, mingo@kernel.org, joel@joelfernandes.org, gregkh@linuxfoundation.org, gustavo@embeddedor.com, tglx@linutronix.de, paulmck@kernel.org, josh@joshtriplett.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, luto@kernel.org, tony.luck@intel.com, frederic@kernel.org, dan.carpenter@oracle.com, mhiramat@kernel.org, Marco Elver , Mark Rutland Subject: Re: [PATCH v3 16/22] locking/atomics, kcsan: Add KCSAN instrumentation Message-ID: <20200219160318.GG18400@hirez.programming.kicks-ass.net> References: <20200219144724.800607165@infradead.org> <20200219150745.299217979@infradead.org> <20200219104626.633f0650@gandalf.local.home> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200219104626.633f0650@gandalf.local.home> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 19, 2020 at 10:46:26AM -0500, Steven Rostedt wrote: > On Wed, 19 Feb 2020 15:47:40 +0100 > Peter Zijlstra wrote: > > > From: Marco Elver > > > > This adds KCSAN instrumentation to atomic-instrumented.h. > > > > Signed-off-by: Marco Elver > > Signed-off-by: Paul E. McKenney > > [peterz: removed the actual kcsan hooks] > > Signed-off-by: Peter Zijlstra (Intel) > > Reviewed-by: Mark Rutland > > --- > > include/asm-generic/atomic-instrumented.h | 390 +++++++++++++++--------------- > > scripts/atomic/gen-atomic-instrumented.sh | 14 - > > 2 files changed, 212 insertions(+), 192 deletions(-) > > > > > Does this and the rest of the series depend on the previous patches in > the series? Or can this be a series on to itself (patches 16-22)? It can probably stand on its own, but it very much is related in so far that it's fallout from staring at all this nonsense. Without these the do_int3() can actually have accidental tracing before reaching it's nmi_enter().