Message ID | 1674782358-25542-16-git-send-email-max.byungchul.park@gmail.com |
---|---|
State | Not Applicable |
Headers | show
Return-Path: <SRS0=X1T1=5Y=vger.kernel.org=linux-ext4-owner@ozlabs.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org (client-ip=150.107.74.76; helo=gandalf.ozlabs.org; envelope-from=srs0=x1t1=5y=vger.kernel.org=linux-ext4-owner@ozlabs.org; receiver=<UNKNOWN>) Received: from gandalf.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4P30tR4tLgz23hC for <incoming@patchwork.ozlabs.org>; Fri, 27 Jan 2023 12:51:43 +1100 (AEDT) Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4P30tR4RR8z4xHV for <incoming@patchwork.ozlabs.org>; Fri, 27 Jan 2023 12:51:43 +1100 (AEDT) Received: by gandalf.ozlabs.org (Postfix) id 4P30tR4Njjz4xN1; Fri, 27 Jan 2023 12:51:43 +1100 (AEDT) Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: gandalf.ozlabs.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: gandalf.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-ext4-owner@vger.kernel.org; receiver=<UNKNOWN>) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4P30tR49xKz4xHV for <patchwork-incoming@ozlabs.org>; Fri, 27 Jan 2023 12:51:43 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233576AbjA0Bvm (ORCPT <rfc822;patchwork-incoming@ozlabs.org>); Thu, 26 Jan 2023 20:51:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34244 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233348AbjA0BuX (ORCPT <rfc822;linux-ext4@vger.kernel.org>); Thu, 26 Jan 2023 20:50:23 -0500 Received: from lgeamrelo11.lge.com (lgeamrelo13.lge.com [156.147.23.53]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 9C1D774A6B for <linux-ext4@vger.kernel.org>; Thu, 26 Jan 2023 17:49:47 -0800 (PST) Received: from unknown (HELO lgemrelse7q.lge.com) (156.147.1.151) by 156.147.23.53 with ESMTP; 27 Jan 2023 10:19:42 +0900 X-Original-SENDERIP: 156.147.1.151 X-Original-MAILFROM: max.byungchul.park@gmail.com Received: from unknown (HELO localhost.localdomain) (10.177.244.38) by 156.147.1.151 with ESMTP; 27 Jan 2023 10:19:42 +0900 X-Original-SENDERIP: 10.177.244.38 X-Original-MAILFROM: max.byungchul.park@gmail.com From: Byungchul Park <max.byungchul.park@gmail.com> To: linux-kernel@vger.kernel.org Cc: torvalds@linux-foundation.org, damien.lemoal@opensource.wdc.com, linux-ide@vger.kernel.org, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, will@kernel.org, tglx@linutronix.de, rostedt@goodmis.org, joel@joelfernandes.org, sashal@kernel.org, daniel.vetter@ffwll.ch, duyuyang@gmail.com, johannes.berg@intel.com, tj@kernel.org, tytso@mit.edu, willy@infradead.org, david@fromorbit.com, amir73il@gmail.com, gregkh@linuxfoundation.org, kernel-team@lge.com, linux-mm@kvack.org, akpm@linux-foundation.org, mhocko@kernel.org, minchan@kernel.org, hannes@cmpxchg.org, vdavydov.dev@gmail.com, sj@kernel.org, jglisse@redhat.com, dennis@kernel.org, cl@linux.com, penberg@kernel.org, rientjes@google.com, vbabka@suse.cz, ngupta@vflare.org, linux-block@vger.kernel.org, paolo.valente@linaro.org, josef@toxicpanda.com, linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk, jack@suse.cz, jlayton@kernel.org, dan.j.williams@intel.com, hch@infradead.org, djwong@kernel.org, dri-devel@lists.freedesktop.org, rodrigosiqueiramelo@gmail.com, melissa.srw@gmail.com, hamohammed.sa@gmail.com, 42.hyeyoo@gmail.com, chris.p.wilson@intel.com, gwan-gyeong.mun@intel.com, max.byungchul.park@gmail.com, boqun.feng@gmail.com, longman@redhat.com, hdanton@sina.com Subject: [PATCH v8 15/25] locking/lockdep, cpu/hotplus: Use a weaker annotation in AP thread Date: Fri, 27 Jan 2023 10:19:08 +0900 Message-Id: <1674782358-25542-16-git-send-email-max.byungchul.park@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1674782358-25542-1-git-send-email-max.byungchul.park@gmail.com> References: <1674782358-25542-1-git-send-email-max.byungchul.park@gmail.com> X-Spam-Status: No, score=-4.3 required=5.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FORGED_GMAIL_RCVD,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED,RCVD_IN_DNSWL_HI, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_SOFTFAIL autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <linux-ext4.vger.kernel.org> X-Mailing-List: linux-ext4@vger.kernel.org |
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diff --git a/kernel/cpu.c b/kernel/cpu.c index 6c0a92c..6a9b9c3 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -356,7 +356,7 @@ int lockdep_is_cpus_held(void) static void lockdep_acquire_cpus_lock(void) { - rwsem_acquire(&cpu_hotplug_lock.dep_map, 0, 0, _THIS_IP_); + rwsem_acquire(&cpu_hotplug_lock.dep_map, 0, 1, _THIS_IP_); } static void lockdep_release_cpus_lock(void)
cb92173d1f0 ("locking/lockdep, cpu/hotplug: Annotate AP thread") was introduced to make lockdep_assert_cpus_held() work in AP thread. However, the annotation is too strong for that purpose. We don't have to use more than try lock annotation for that. Furthermore, now that Dept was introduced, false positive alarms was reported by that. Replaced it with try lock annotation. Signed-off-by: Byungchul Park <max.byungchul.park@gmail.com> --- kernel/cpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)