From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 95FB034403F; Thu, 2 Apr 2026 15:25:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775143529; cv=none; b=HEaGvNI8AYHWcxsoThjGESj56EqRATQkfWJdLxUC8gdOCL8i3aRru72CbFs7e6YH73xcAIWyZpZgKHPz9S8BqXIfFTm2Q88H/32N8Q7CSvGn2bYN4l+GWwKNuW4c1eEa9CjsYLB/mjo7XtZZoppfKmCjfrokx4ZH+LJbEVxY/MM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775143529; c=relaxed/simple; bh=xhCfedEVrgNyKr1DnCyfjrBfs37cxy3biI06+Ypg+4c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZiSgnc6liY5cVbwaghi2rH2rt1x1o8lOvnkCKqohJRlSSyfN7afcbwXXBOQbbl0p8UpiXU/INbRHfpKs4kar+AJ5+9LgOPGl2m52Kf+1zDxy57b5pwkUzcTFeKFEQYVZF74X6Clp4qkr3xiNvEqhrhCFjIfbDXIpg/FFO4f6qzk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=u2szK5EQ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="u2szK5EQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C79FAC2BCB2; Thu, 2 Apr 2026 15:25:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775143529; bh=xhCfedEVrgNyKr1DnCyfjrBfs37cxy3biI06+Ypg+4c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:Reply-To:From; b=u2szK5EQABMsAPFYy8mBZDK+tw5TJ9Jb97ejNonPomb60WjK7cm9YdgvJ08GHfFx0 WJNFVYVgQzVyu6qQWWw7oquCAMk+uyI9XJxzf9UyKcljCufusNJ2D6Ysv52Gnlbdcg pybdeQgMmvUF9v0hrJxuZmJ4my/jxRk0pjTdSAznVXqpIECdS+2xQZpouklOsMRJHd ZPPhDZAXwJuguR47XdvG6SIs/xpCiuAAfnqoo9hD6Lyl/UuEfI+qJGtvUsBm0y2ucL J9QjNwk97R3rhjDx9wzdDKlxuPXCeAaBoTEiwnQ1fSxGYt2t/Ya2GOeleX5e4Q6qP4 Q/lXl/z2d9YFQ== From: Gary Guo To: Miguel Ojeda , Boqun Feng , Gary Guo , =?UTF-8?q?Bj=C3=B6rn=20Roy=20Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich Cc: Alan Stern , Andrea Parri , Will Deacon , Peter Zijlstra , Nicholas Piggin , David Howells , Jade Alglave , Luc Maranget , "Paul E. McKenney" , Akira Yokosawa , Daniel Lustig , Joel Fernandes , rust-for-linux@vger.kernel.org, nouveau@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, lkmm@lists.linux.dev Subject: [PATCH 1/3] rust: sync: add helpers for mb, dma_mb and friends Date: Thu, 2 Apr 2026 16:24:34 +0100 Message-ID: <20260402152443.1059634-3-gary@kernel.org> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20260402152443.1059634-2-gary@kernel.org> References: <20260402152443.1059634-2-gary@kernel.org> Reply-To: Gary Guo Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Gary Guo They supplement the existing smp_mb, smp_rmb and smp_wmb. Signed-off-by: Gary Guo --- rust/helpers/barrier.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/rust/helpers/barrier.c b/rust/helpers/barrier.c index fed8853745c8..dbc7a3017c78 100644 --- a/rust/helpers/barrier.c +++ b/rust/helpers/barrier.c @@ -2,6 +2,36 @@ #include +__rust_helper void rust_helper_mb(void) +{ + mb(); +} + +__rust_helper void rust_helper_rmb(void) +{ + rmb(); +} + +__rust_helper void rust_helper_wmb(void) +{ + wmb(); +} + +__rust_helper void rust_helper_dma_mb(void) +{ + dma_mb(); +} + +__rust_helper void rust_helper_dma_rmb(void) +{ + dma_rmb(); +} + +__rust_helper void rust_helper_dma_wmb(void) +{ + dma_wmb(); +} + __rust_helper void rust_helper_smp_mb(void) { smp_mb(); -- 2.51.2