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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5E70FC433F5 for ; Tue, 5 Oct 2021 10:59:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4601761186 for ; Tue, 5 Oct 2021 10:59:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234316AbhJELBn (ORCPT ); Tue, 5 Oct 2021 07:01:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51958 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234226AbhJELBi (ORCPT ); Tue, 5 Oct 2021 07:01:38 -0400 Received: from mail-qk1-x74a.google.com (mail-qk1-x74a.google.com [IPv6:2607:f8b0:4864:20::74a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6083CC061749 for ; Tue, 5 Oct 2021 03:59:48 -0700 (PDT) Received: by mail-qk1-x74a.google.com with SMTP id t2-20020a05620a450200b0045e34e4f9c7so26500718qkp.18 for ; Tue, 05 Oct 2021 03:59:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=o6tCUIHZ5VDO2w0cRCfWBwR+yqfihIBzxgT5IEbFQNw=; b=qOYA0jMM+/K12dDkdqs5dZ3iMCJm3H1O1uaYwVLBeKrAhWN7jVjWdUTboBH62QGYBH K7sUdAzFd8gD1odKu/+wFFrgA8t6Kq0PG3NwF/V/QBb6aCzlrc5PsXuOzcgQy0KUXb5M QBUBbQzS4bpYxLCwaXrAKKVfnJT80/k/eMJeNwG90yvhariPjIdMkROHst61Ds2Nrkww 6amOm2FKDDIl4zRWFKQYTrjQhVJel4eUDAvbWBj5aOz7X8h+Lwdb8TydU/s8PFnhfF88 GNct/WFveKORSyhAc8FPCo2dMHN33ZDlj/EnBENx6DK4m+MRQKBSoxYA9tfhP79S+vhA OGHQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=o6tCUIHZ5VDO2w0cRCfWBwR+yqfihIBzxgT5IEbFQNw=; b=sEfs9jbP2FMxzfrqAg1DVctf+211PFc7d/GqX25ZfnOqQNgBaoFNOTkSUvtDjIGHvY 1LJ3aJakMY8rFzc3Xf6XyY7V4Dne5z1rtdl3va7D+UUOL+bihY3wk3NMrEYM9zccmk8D ujDlTkbksXYtm4LLW2/qiebQhWLCQJDqtGPstBVxMJmX4bjOyLyFNkiXj/HRSqPNWOYd N1hHqohyDMB02TZa4/iVXktgVlOihATiAvtwOG+huaZofwKWVtubGqjWnA1QB+K73XHF tuvW1ahwP9lJ5TsWA+4v3GwXo5YPwDqXsjWsYcRFnRLeycItSsabq+Hnlkpi4Gy+duyl jueg== X-Gm-Message-State: AOAM531sN8HPeet+Ps7sQ64ZHvb7tao+G6ELWPPa/qVnAurPWhHkGddP fOiM5i67cfoaE3IOu5NlItrh8AZf6Q== X-Google-Smtp-Source: ABdhPJyTEl2z+SbGZhkD9pQ6CXRsL39PESmKScxZvPEVS4ezV0+8cNls5zkvZs5Q6ztfstx525hmvU838w== X-Received: from elver.muc.corp.google.com ([2a00:79e0:15:13:e44f:5054:55f8:fcb8]) (user=elver job=sendgmr) by 2002:a05:6214:c1:: with SMTP id f1mr7500180qvs.9.1633431587608; Tue, 05 Oct 2021 03:59:47 -0700 (PDT) Date: Tue, 5 Oct 2021 12:58:44 +0200 In-Reply-To: <20211005105905.1994700-1-elver@google.com> Message-Id: <20211005105905.1994700-3-elver@google.com> Mime-Version: 1.0 References: <20211005105905.1994700-1-elver@google.com> X-Mailer: git-send-email 2.33.0.800.g4c38ced690-goog Subject: [PATCH -rcu/kcsan 02/23] kcsan: Remove redundant zero-initialization of globals From: Marco Elver To: elver@google.com, "Paul E . McKenney" Cc: Alexander Potapenko , Boqun Feng , Borislav Petkov , Dmitry Vyukov , Ingo Molnar , Josh Poimboeuf , Mark Rutland , Peter Zijlstra , Thomas Gleixner , Waiman Long , Will Deacon , kasan-dev@googlegroups.com, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org They are implicitly zero-initialized, remove explicit initialization. It keeps the upcoming additions to kcsan_ctx consistent with the rest. No functional change intended. Signed-off-by: Marco Elver --- init/init_task.c | 9 +-------- kernel/kcsan/core.c | 5 ----- 2 files changed, 1 insertion(+), 13 deletions(-) diff --git a/init/init_task.c b/init/init_task.c index 2d024066e27b..61700365ce58 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -181,14 +181,7 @@ struct task_struct init_task .kasan_depth = 1, #endif #ifdef CONFIG_KCSAN - .kcsan_ctx = { - .disable_count = 0, - .atomic_next = 0, - .atomic_nest_count = 0, - .in_flat_atomic = false, - .access_mask = 0, - .scoped_accesses = {LIST_POISON1, NULL}, - }, + .kcsan_ctx = { .scoped_accesses = {LIST_POISON1, NULL} }, #endif #ifdef CONFIG_TRACE_IRQFLAGS .softirqs_enabled = 1, diff --git a/kernel/kcsan/core.c b/kernel/kcsan/core.c index 6bfd3040f46b..e34a1710b7bc 100644 --- a/kernel/kcsan/core.c +++ b/kernel/kcsan/core.c @@ -44,11 +44,6 @@ bool kcsan_enabled; /* Per-CPU kcsan_ctx for interrupts */ static DEFINE_PER_CPU(struct kcsan_ctx, kcsan_cpu_ctx) = { - .disable_count = 0, - .atomic_next = 0, - .atomic_nest_count = 0, - .in_flat_atomic = false, - .access_mask = 0, .scoped_accesses = {LIST_POISON1, NULL}, }; -- 2.33.0.800.g4c38ced690-goog