linux-kernel - [PATCH kcsan 02/29] kcsan: Remove redundant zero-initialization of globals

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Date:   Tue, 14 Dec 2021 14:04:12 -0800
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     linux-kernel@...r.kernel.org, kasan-dev@...glegroups.com,
        kernel-team@...com, mingo@...nel.org
Cc:     elver@...gle.com, andreyknvl@...gle.com, glider@...gle.com,
        dvyukov@...gle.com, cai@....pw, boqun.feng@...il.com,
        Mark Rutland <mark.rutland@....com>,
        "Paul E . McKenney" <paulmck@...nel.org>
Subject: [PATCH kcsan 02/29] kcsan: Remove redundant zero-initialization of globals

From: Marco Elver <elver@...gle.com>

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@...gle.com>
Acked-by: Mark Rutland <mark.rutland@....com>
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 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 2d024066e27bd..73cc8f03511a3 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 6bfd3040f46be..e34a1710b7bcc 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},
 };
 
-- 
2.31.1.189.g2e36527f23