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rust: sync: Add helpers for mb, dma_mb and friends

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They supplement the existing smp_mb, smp_rmb and smp_wmb.

Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Signed-off-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Boqun Feng <boqun@kernel.org>
Link: https://patch.msgid.link/20260609-rust-barrier-v2-1-30fcc48e1cd0@garyguo.net
This commit is contained in:
Gary Guo 2026-06-09 16:38:37 +01:00 committed by Boqun Feng
parent 47c3367ff0
commit 79d3d667af
1 changed files with 30 additions and 0 deletions
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30
rust/helpers/barrier.c
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@ -2,6 +2,36 @@
#include <asm/barrier.h>
__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();