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[103.168.172.201]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4ffa8e36232sm105541231cf.22.2026.01.11.04.02.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 11 Jan 2026 04:02:49 -0800 (PST) Received: from phl-compute-02.internal (phl-compute-02.internal [10.202.2.42]) by mailfauth.phl.internal (Postfix) with ESMTP id 6CD81F40068; Sun, 11 Jan 2026 07:02:49 -0500 (EST) Received: from phl-frontend-03 ([10.202.2.162]) by phl-compute-02.internal (MEProxy); Sun, 11 Jan 2026 07:02:49 -0500 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefgedrtddtgdduudeghedvucetufdoteggodetrf dotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfurfetoffkrfgpnffqhgenuceu rghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujf gurhephffvvefufffkofgjfhgggfestdekredtredttdenucfhrhhomhepuehoqhhunhcu hfgvnhhguceosghoqhhunhdrfhgvnhhgsehgmhgrihhlrdgtohhmqeenucggtffrrghtth gvrhhnpedvveekvddtffelffelfedvudefffeuheejgeeivedufffgledvgeduveffueeh leenucffohhmrghinhepmhhsghhiugdrlhhinhhknecuvehluhhsthgvrhfuihiivgepud enucfrrghrrghmpehmrghilhhfrhhomhepsghoqhhunhdomhgvshhmthhprghuthhhphgv rhhsohhnrghlihhthidqieelvdeghedtieegqddujeejkeehheehvddqsghoqhhunhdrfh gvnhhgpeepghhmrghilhdrtghomhesfhhigihmvgdrnhgrmhgvpdhnsggprhgtphhtthho peduhedpmhhouggvpehsmhhtphhouhhtpdhrtghpthhtohepphgvthgvrhiisehinhhfrh gruggvrggurdhorhhgpdhrtghpthhtohepmhhinhhgoheskhgvrhhnvghlrdhorhhgpdhr tghpthhtoheprhhushhtqdhfohhrqdhlihhnuhigsehvghgvrhdrkhgvrhhnvghlrdhorh hgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdho rhhgpdhrtghpthhtohepfihilhhlsehkvghrnhgvlhdrohhrghdprhgtphhtthhopehmrg hrkhdrrhhuthhlrghnugesrghrmhdrtghomhdprhgtphhtthhopehtghhlgieslhhinhhu thhrohhnihigrdguvgdprhgtphhtthhopehojhgvuggrsehkvghrnhgvlhdrohhrghdprh gtphhtthhopehgrghrhiesghgrrhihghhuohdrnhgvth X-ME-Proxy: Feedback-ID: iad51458e:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Sun, 11 Jan 2026 07:02:48 -0500 (EST) From: Boqun Feng To: "Peter Zijlstra" , "Ingo Molnar" Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, "Will Deacon" , "Mark Rutland" , "Thomas Gleixner" , "Miguel Ojeda" , "Gary Guo" , "Alice Ryhl" , "Andreas Hindborg" , "Benno Lossin" , "Danilo Krummrich" , FUJITA Tomonori , Boqun Feng Subject: [PATCH 14/36] rust: helpers: Add i8/i16 atomic try_cmpxchg_relaxed helpers Date: Sun, 11 Jan 2026 20:01:47 +0800 Message-ID: <20260111120209.6133-12-boqun.feng@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260111120209.6133-1-boqun.feng@gmail.com> References: <20260111115808.5702-1-boqun.feng@gmail.com> <20260111120209.6133-1-boqun.feng@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: FUJITA Tomonori Add i8/i16 atomic try_cmpxchg_relaxed helpers that call try_cmpxchg_relaxed() macro implementing atomic try_cmpxchg_relaxed using architecture-specific instructions. [boqun: Use try_cmpxchg_relaxed() instead of raw_try_cmpxchg_relaxed()] Signed-off-by: FUJITA Tomonori Signed-off-by: Boqun Feng Link: https://patch.msgid.link/20251227115951.1424458-5-fujita.tomonori@gmail.com --- rust/helpers/atomic_ext.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/rust/helpers/atomic_ext.c b/rust/helpers/atomic_ext.c index 962ea05dfb9c..7d0c2bd340da 100644 --- a/rust/helpers/atomic_ext.c +++ b/rust/helpers/atomic_ext.c @@ -127,3 +127,13 @@ __rust_helper bool rust_helper_atomic_i16_try_cmpxchg_release(s16 *ptr, s16 *old { return try_cmpxchg_release(ptr, old, new); } + +__rust_helper bool rust_helper_atomic_i8_try_cmpxchg_relaxed(s8 *ptr, s8 *old, s8 new) +{ + return try_cmpxchg_relaxed(ptr, old, new); +} + +__rust_helper bool rust_helper_atomic_i16_try_cmpxchg_relaxed(s16 *ptr, s16 *old, s16 new) +{ + return try_cmpxchg_relaxed(ptr, old, new); +} -- 2.51.0