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=-11.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 7C6ABC43461 for ; Tue, 15 Sep 2020 16:13:22 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 345E121D41 for ; Tue, 15 Sep 2020 16:13:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="SBWe+v2V"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="aLJBoJyZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 345E121D41 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=3Jd7O+XfzsDqTVWYpygNzFVs9DFP1rZHPA2BFHwIvb8=; b=SBWe+v2VD0Qoqd+qTE52nKOJU 6ivL3t5mGaacpdQCyefztPIzdZlVxoOXAJDDRTEX0a1Da/UVFHRCpPtVqXmdrzDWg2FXnoRbFODZc mzrLIfgnnVcWy1/PEu/oAI2HdVXM8Z/omHMj3a5z0gR7j2O36QOsOzBNd+eu9gYbXPG/bFSENDMXZ LG0FyMuRnOrUzyt0Y4DWQQfDCbr8PdJNThtRBava1aYTVFirin6FddHjOfeZY9DSzbryDwumO8H7+ 1FXfc9fCBd8aB7hk0tLEf898NuzcvliOnSQKymffnb+mFWYKEPzLfTVa6R1xK1YssNZbBjIBCRt9b cTpsNfHWA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kIDYO-0005Oz-Ro; Tue, 15 Sep 2020 16:11:36 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kIDY4-0005FF-AT; Tue, 15 Sep 2020 16:11:18 +0000 Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 680002074B; Tue, 15 Sep 2020 16:11:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600186275; bh=UC1yh2hp7xYE271XAEDPNKg+J+sQcRAFlbeySxxF1fY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=aLJBoJyZ2MbAregGNpzO/CAOq3qYqCUVYtw7hO4M7FduU8HInY48wZG+1gWntYelQ oLWO9tTjUONmPdC0nJ9es906NbinxDOlYlq9MiTPOxDMzJntQj9N/nuOqfyS1ru3ka TrV8du2f8kHA6eUDyUlEROxdTu8m4Jc0gLv8xEr4= Date: Tue, 15 Sep 2020 17:11:05 +0100 From: Will Deacon To: Thomas Gleixner Subject: Re: [patch 04/13] lockdep: Clenaup PREEMPT_COUNT leftovers Message-ID: <20200915161104.GB26745@willie-the-truck> References: <20200914204209.256266093@linutronix.de> <20200914204441.375753691@linutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200914204441.375753691@linutronix.de> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200915_121116_635189_AEE70AFA X-CRM114-Status: GOOD ( 18.96 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Juri Lelli , Peter Zijlstra , Sebastian Andrzej Siewior , Joonas Lahtinen , Lai Jiangshan , dri-devel@lists.freedesktop.org, Ben Segall , linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-hexagon@vger.kernel.org, Shuah Khan , Ingo Molnar , Anton Ivanov , linux-arch@vger.kernel.org, Linus Torvalds , Brian Cain , Richard Weinberger , Russell King , David Airlie , Ingo Molnar , Geert Uytterhoeven , Mel Gorman , intel-gfx@lists.freedesktop.org, Matt Turner , Valentin Schneider , linux-xtensa@linux-xtensa.org, "Paul E. McKenney" , Jeff Dike , linux-um@lists.infradead.org, Josh Triplett , Steven Rostedt , rcu@vger.kernel.org, linux-m68k@lists.linux-m68k.org, Ivan Kokshaysky , Jani Nikula , Rodrigo Vivi , Vincent Guittot , Dietmar Eggemann , linux-arm-kernel@lists.infradead.org, Richard Henderson , Chris Zankel , Max Filippov , LKML , Daniel Vetter , linux-alpha@vger.kernel.org, Mathieu Desnoyers , Andrew Morton , Daniel Bristot de Oliveira Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Sep 14, 2020 at 10:42:13PM +0200, Thomas Gleixner wrote: > CONFIG_PREEMPT_COUNT is now unconditionally enabled and will be > removed. Cleanup the leftovers before doing so. > > Signed-off-by: Thomas Gleixner > Cc: Peter Zijlstra > Cc: Ingo Molnar > Cc: Will Deacon > --- > include/linux/lockdep.h | 6 ++---- > lib/Kconfig.debug | 1 - > 2 files changed, 2 insertions(+), 5 deletions(-) > > --- a/include/linux/lockdep.h > +++ b/include/linux/lockdep.h > @@ -585,16 +585,14 @@ do { \ > > #define lockdep_assert_preemption_enabled() \ > do { \ > - WARN_ON_ONCE(IS_ENABLED(CONFIG_PREEMPT_COUNT) && \ > - debug_locks && \ > + WARN_ON_ONCE(debug_locks && \ > (preempt_count() != 0 || \ > !raw_cpu_read(hardirqs_enabled))); \ > } while (0) > > #define lockdep_assert_preemption_disabled() \ > do { \ > - WARN_ON_ONCE(IS_ENABLED(CONFIG_PREEMPT_COUNT) && \ > - debug_locks && \ > + WARN_ON_ONCE(debug_locks && \ > (preempt_count() == 0 && \ > raw_cpu_read(hardirqs_enabled))); \ > } while (0) > --- a/lib/Kconfig.debug > +++ b/lib/Kconfig.debug > @@ -1161,7 +1161,6 @@ config PROVE_LOCKING > select DEBUG_RWSEMS > select DEBUG_WW_MUTEX_SLOWPATH > select DEBUG_LOCK_ALLOC > - select PREEMPT_COUNT > select TRACE_IRQFLAGS > default n > help Acked-by: Will Deacon Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel