From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f73.google.com (mail-wm1-f73.google.com [209.85.128.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 88B122C9D for ; Tue, 30 Nov 2021 11:45:09 +0000 (UTC) Received: by mail-wm1-f73.google.com with SMTP id ay34-20020a05600c1e2200b00337fd217772so12696038wmb.4 for ; Tue, 30 Nov 2021 03:45:09 -0800 (PST) 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=ZmySmV7nXgp7ZU44HAHRwN8PhZWnIeFNi9/5LSGaJn0=; b=hs4LlI5lsoVztdyeXHYGVaXqoGqfWxtfU47ZxaWIXMF2LtJbb78kUIVc0cRuvGbMfb UNw6/fXMdGtPv2h8zBMi5zOcBaSwfjE2+nKiMNKeM9jeUs4vjbJK99CBpMUY1igcK2AO hkM8i+x5rI34uTiK4kGz6Ny8KsFfPBn9Skfxtgdf+EY6mB5WctN9uRu5XKue8YS4CWPZ MuVmceyTqxFjckuQpfDMMo3/XKIvHHLDEu5mET7aFh3FTzDlkJ5ONfBlsc2EWCjP5kGc SyQVbaVFhKuFSos4aYqJ8KZimc+D5tJysctdVSWpiS6AHqJ7/PEA9mqqH25rLKWF5py6 iIDg== 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=ZmySmV7nXgp7ZU44HAHRwN8PhZWnIeFNi9/5LSGaJn0=; b=ZLY9JPY+ZDrmxCgmWQeD8XG66HwDSgefP2cZ8966z5Ft6+9g8XEmZijpm9tEqOivFq l4Wm4QqVUQAmG+fi5484xwzc3boV5RdZP7Zu3n57MVPTvrk/WyOw/aTItrIA6njly9Ih Z5D6PGwzydpZ7VpbPWsjsLjpsGeRsE2ekliwWar1ek64xtVTPWO9fWjxSD+yrx3VXCQO CEhCiJ7+Y9lcM79Dcov26aRTDy200sCG3NQsn6M7XpsxoMB93vZuM3ZOl90ayh4fCf4v EExtbpUZPB3d+Tgr1PhFlTaukMkoL49rcb5c8VlUze4fC4EsZiAXGBiPoksD6MciJlKK smUA== X-Gm-Message-State: AOAM530a0BtE3YZLrUSEZIrNeVWTA3SZ57Z+IN9+NsM/iL7pxAVkqWv0 hKmw+r6Asi7ztBzmSklwy1ycq2MKNQ== X-Google-Smtp-Source: ABdhPJwtFgfDTN6vPjSFkCyUpvSQ19ytHU7Acqp52u/sb5E17RDsJPS4ZB9wklKdX5QEMGX86DVOVVVs4A== X-Received: from elver.muc.corp.google.com ([2a00:79e0:15:13:86b7:11e9:7797:99f0]) (user=elver job=sendgmr) by 2002:a05:600c:4f0b:: with SMTP id l11mr625318wmq.0.1638272707028; Tue, 30 Nov 2021 03:45:07 -0800 (PST) Date: Tue, 30 Nov 2021 12:44:10 +0100 In-Reply-To: <20211130114433.2580590-1-elver@google.com> Message-Id: <20211130114433.2580590-3-elver@google.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20211130114433.2580590-1-elver@google.com> X-Mailer: git-send-email 2.34.0.rc2.393.gf8c9666880-goog Subject: [PATCH v3 02/25] 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 , 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, llvm@lists.linux.dev, x86@kernel.org Content-Type: text/plain; charset="UTF-8" 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 Acked-by: Mark Rutland --- v3: * Minimize diff by leaving "scoped_accesses" on its own line, which should also reduce diff of future changes. --- init/init_task.c | 5 ----- kernel/kcsan/core.c | 5 ----- 2 files changed, 10 deletions(-) diff --git a/init/init_task.c b/init/init_task.c index 2d024066e27b..73cc8f03511a 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -182,11 +182,6 @@ struct task_struct init_task #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}, }, #endif 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}, }; -- 2.34.0.rc2.393.gf8c9666880-goog