linux-kernel - [PATCH 21/36] rust: sync: atomic: Add atomic bool tests

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Message-ID: <20260111120209.6133-19-boqun.feng@gmail.com>
Date: Sun, 11 Jan 2026 20:01:54 +0800
From: Boqun Feng <boqun.feng@...il.com>
To: "Peter Zijlstra" <peterz@...radead.org>,
	"Ingo Molnar" <mingo@...nel.org>
Cc: rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"Will Deacon" <will@...nel.org>,
	"Mark Rutland" <mark.rutland@....com>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"Miguel Ojeda" <ojeda@...nel.org>,
	"Gary Guo" <gary@...yguo.net>,
	"Alice Ryhl" <aliceryhl@...gle.com>,
	"Andreas Hindborg" <a.hindborg@...nel.org>,
	"Benno Lossin" <lossin@...nel.org>,
	"Danilo Krummrich" <dakr@...nel.org>,
	FUJITA Tomonori <fujita.tomonori@...il.com>,
	Boqun Feng <boqun.feng@...il.com>
Subject: [PATCH 21/36] rust: sync: atomic: Add atomic bool tests

From: FUJITA Tomonori <fujita.tomonori@...il.com>

Add tests for Atomic<bool> operations.

Atomic<bool> does not fit into the existing u8/16/32/64 tests so
introduce a dedicated test for it.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@...il.com>
Reviewed-by: Gary Guo <gary@...yguo.net>
Signed-off-by: Boqun Feng <boqun.feng@...il.com>
Link: https://patch.msgid.link/20260101034922.2020334-3-fujita.tomonori@gmail.com
---
 rust/kernel/sync/atomic/predefine.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/rust/kernel/sync/atomic/predefine.rs b/rust/kernel/sync/atomic/predefine.rs
index 3fc99174b086..42067c6a266c 100644
--- a/rust/kernel/sync/atomic/predefine.rs
+++ b/rust/kernel/sync/atomic/predefine.rs
@@ -199,4 +199,20 @@ fn atomic_arithmetic_tests() {
             assert_eq!(v + 25, x.load(Relaxed));
         });
     }
+
+    #[test]
+    fn atomic_bool_tests() {
+        let x = Atomic::new(false);
+
+        assert_eq!(false, x.load(Relaxed));
+        x.store(true, Relaxed);
+        assert_eq!(true, x.load(Relaxed));
+
+        assert_eq!(true, x.xchg(false, Relaxed));
+        assert_eq!(false, x.load(Relaxed));
+
+        assert_eq!(Err(false), x.cmpxchg(true, true, Relaxed));
+        assert_eq!(false, x.load(Relaxed));
+        assert_eq!(Ok(false), x.cmpxchg(false, true, Full));
+    }
 }
-- 
2.51.0