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 BFD3DC433FE for ; Tue, 5 Oct 2021 10:59:49 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 71C216117A for ; Tue, 5 Oct 2021 10:59:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 71C216117A Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 16213940008; Tue, 5 Oct 2021 06:59:49 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0EE83940007; Tue, 5 Oct 2021 06:59:49 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EA825940008; Tue, 5 Oct 2021 06:59:48 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0119.hostedemail.com [216.40.44.119]) by kanga.kvack.org (Postfix) with ESMTP id DB087940007 for ; Tue, 5 Oct 2021 06:59:48 -0400 (EDT) Received: from smtpin28.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 87F60181D75C7 for ; Tue, 5 Oct 2021 10:59:48 +0000 (UTC) X-FDA: 78662088456.28.C8D6EB9 Received: from mail-qt1-f202.google.com (mail-qt1-f202.google.com [209.85.160.202]) by imf03.hostedemail.com (Postfix) with ESMTP id 45E073000CB0 for ; Tue, 5 Oct 2021 10:59:48 +0000 (UTC) Received: by mail-qt1-f202.google.com with SMTP id k1-20020ac80201000000b002a7200b449eso11248570qtg.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=ZlcR7IJceOuco+zR/M6DCOOrnt5SFckEPV9DebLjaOPR8MMcehIL7iINPhM5axe++P kpPq0SvVRz6TgnZaf4XIBkZDyAgm8xhEhV41ugR73IIGERPF31h6LujlSQx6lQwxWeRg 04B1CfLt6B+IywYzA560mQGfuLP3JVF3uETNQVUhadE4zcvkatVCspM2t+llw5NOi0CT 2/rijS7+hW8R3oCMAA2uEQPYsWFM5SPiM6KRJLcNky9lAQnXPoh9gs/6VvdY3PX13S7o iToPDxji/3aAcIOtr7/YQvKUiD6zJmbiDZOSK36o/yPnEhhwMCPfte1ezFyIDLkSLxv/ rCxA== X-Gm-Message-State: AOAM533wBod8xBYbB7KIlp5w7Hf50SJVxuO7fMJHSeV9z7pCkrtVuL28 va5FFC9WU7HVvjYB4D26Vin44A+jiA== 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" X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 45E073000CB0 X-Stat-Signature: aot59p9tc6985hwid94n6n3faxfqd3k3 Authentication-Results: imf03.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=qOYA0jMM; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf03.hostedemail.com: domain of 3IzBcYQUKCAYkr1kxmuumrk.iusrot03-ssq1giq.uxm@flex--elver.bounces.google.com designates 209.85.160.202 as permitted sender) smtp.mailfrom=3IzBcYQUKCAYkr1kxmuumrk.iusrot03-ssq1giq.uxm@flex--elver.bounces.google.com X-HE-Tag: 1633431588-95287 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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