On Fri, 1 Nov 2024 at 14:07, Boqun Feng <boqun.feng@xxxxxxxxx> wrote: > > Memory barriers are building blocks for concurrent code, hence provide > a minimal set of them. > > The compiler barrier, barrier(), is implemented in inline asm instead of > using core::sync::atomic::compiler_fence() because memory models are > different: kernel's atomics are implemented in inline asm therefore the > compiler barrier should be implemented in inline asm as well. > > Signed-off-by: Boqun Feng <boqun.feng@xxxxxxxxx> > --- > rust/helpers/helpers.c | 1 + > rust/kernel/sync.rs | 1 + > rust/kernel/sync/barrier.rs | 67 +++++++++++++++++++++++++++++++++++++ > 3 files changed, 69 insertions(+) > create mode 100644 rust/kernel/sync/barrier.rs > > diff --git a/rust/helpers/helpers.c b/rust/helpers/helpers.c > index ab5a3f1be241..f4a94833b29d 100644 > --- a/rust/helpers/helpers.c > +++ b/rust/helpers/helpers.c > @@ -8,6 +8,7 @@ > */ > > #include "atomic.c" > +#include "barrier.c" It looks like "barrier.c" is missing, so this isn't compiling for me. I assume it was meant to be added in this patch...? Thanks, -- David
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