From 842aedc3907deb154eedb88c7e4c3278c9b33701 Mon Sep 17 00:00:00 2001
From: FUJITA Tomonori <fujita.tomonori@gmail.com>
Date: Thu, 21 Aug 2025 09:20:54 +0900
Subject: rust: Add cpu_relax() helper

Add cpu_relax() helper in preparation for supporting
read_poll_timeout().

Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Link: https://lore.kernel.org/r/20250821002055.3654160-2-fujita.tomonori@gmail.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
---
 rust/helpers/processor.c | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 rust/helpers/processor.c

(limited to 'rust/helpers/processor.c')

diff --git a/rust/helpers/processor.c b/rust/helpers/processor.c
new file mode 100644
index 000000000000..d41355e14d6e
--- /dev/null
+++ b/rust/helpers/processor.c
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/processor.h>
+
+void rust_helper_cpu_relax(void)
+{
+	cpu_relax();
+}
-- 
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