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

[PATCH v2 01/27] rust: barrier: 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: Peter Zijlstra <peterz@infradead.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Elle Rhumsaa <elle@weathered-steel.dev>
---
 rust/helpers/barrier.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/rust/helpers/barrier.c b/rust/helpers/barrier.c
index cdf28ce8e5116728c97e24893cf12ef41578d3ac..fed8853745c83639c32f79335e40b9494db11e98 100644
--- a/rust/helpers/barrier.c
+++ b/rust/helpers/barrier.c
@@ -2,17 +2,17 @@
 
 #include <asm/barrier.h>
 
-void rust_helper_smp_mb(void)
+__rust_helper void rust_helper_smp_mb(void)
 {
 	smp_mb();
 }
 
-void rust_helper_smp_wmb(void)
+__rust_helper void rust_helper_smp_wmb(void)
 {
 	smp_wmb();
 }
 
-void rust_helper_smp_rmb(void)
+__rust_helper void rust_helper_smp_rmb(void)
 {
 	smp_rmb();
 }

-- 
2.52.0.351.gbe84eed79e-goog

[tip: locking/core] rust: barrier: 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:     aa574e0f21a6e7a28e4b8794ad4238d3bfd4f9df
Gitweb:        https://git.kernel.org/tip/aa574e0f21a6e7a28e4b8794ad4238d3bfd4f9df
Author:        Alice Ryhl <aliceryhl@google.com>
AuthorDate:    Mon, 05 Jan 2026 12:42:14 
Committer:     Boqun Feng <boqun.feng@gmail.com>
CommitterDate: Fri, 09 Jan 2026 19:01:41 +08:00

rust: barrier: 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-v2-1-51da5f454a67@google.com
---
 rust/helpers/barrier.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/rust/helpers/barrier.c b/rust/helpers/barrier.c
index cdf28ce..fed8853 100644
--- a/rust/helpers/barrier.c
+++ b/rust/helpers/barrier.c
@@ -2,17 +2,17 @@
 
 #include <asm/barrier.h>
 
-void rust_helper_smp_mb(void)
+__rust_helper void rust_helper_smp_mb(void)
 {
 	smp_mb();
 }
 
-void rust_helper_smp_wmb(void)
+__rust_helper void rust_helper_smp_wmb(void)
 {
 	smp_wmb();
 }
 
-void rust_helper_smp_rmb(void)
+__rust_helper void rust_helper_smp_rmb(void)
 {
 	smp_rmb();
 }