[v2] Allow inlining C helpers into Rust when using LTO

[PATCH v2 13/27] rust: processor: add __rust_helper to helpers

Posted by Alice Ryhl 1 month ago

This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
---
Cc: FUJITA Tomonori <fujita.tomonori@gmail.com>
Cc: Andreas Hindborg <a.hindborg@kernel.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Daniel Almeida <daniel.almeida@collabora.com>
---
 rust/helpers/processor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/helpers/processor.c b/rust/helpers/processor.c
index d41355e14d6eb593beb018b5709118afe855c852..76fadbb647c5592db4526569fb1ed6b04ed17e87 100644
--- a/rust/helpers/processor.c
+++ b/rust/helpers/processor.c
@@ -2,7 +2,7 @@
 
 #include <linux/processor.h>
 
-void rust_helper_cpu_relax(void)
+__rust_helper void rust_helper_cpu_relax(void)
 {
 	cpu_relax();
 }

-- 
2.52.0.351.gbe84eed79e-goog

[tip: locking/core] rust: processor: Add __rust_helper to helpers

Posted by tip-bot2 for Alice Ryhl 3 weeks, 4 days ago

The following commit has been merged into the locking/core branch of tip:

Commit-ID:     a87e6fe8738fabf9881758b79b0db592c057acbd
Gitweb:        https://git.kernel.org/tip/a87e6fe8738fabf9881758b79b0db592c057acbd
Author:        Alice Ryhl <aliceryhl@google.com>
AuthorDate:    Mon, 05 Jan 2026 12:42:26 
Committer:     Boqun Feng <boqun.feng@gmail.com>
CommitterDate: Fri, 09 Jan 2026 19:01:41 +08:00

rust: processor: Add __rust_helper to helpers

This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260105-define-rust-helper-v2-13-51da5f454a67@google.com
---
 rust/helpers/processor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/helpers/processor.c b/rust/helpers/processor.c
index d41355e..76fadbb 100644
--- a/rust/helpers/processor.c
+++ b/rust/helpers/processor.c
@@ -2,7 +2,7 @@
 
 #include <linux/processor.h>
 
-void rust_helper_cpu_relax(void)
+__rust_helper void rust_helper_cpu_relax(void)
 {
 	cpu_relax();
 }