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>
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References: <20211130114433.2580590-1-elver@google.com>
Subject: [PATCH v3 02/25] kcsan: Remove redundant zero-initialization of globals
From:   Marco Elver <elver@google.com>
To:     elver@google.com, "Paul E. McKenney" <paulmck@kernel.org>
Cc:     Alexander Potapenko <glider@google.com>,
        Boqun Feng <boqun.feng@gmail.com>,
        Borislav Petkov <bp@alien8.de>,
        Dmitry Vyukov <dvyukov@google.com>,
        Ingo Molnar <mingo@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Waiman Long <longman@redhat.com>,
        Will Deacon <will@kernel.org>, 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"
Precedence: bulk

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 <elver@google.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
---
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