rcu_barrier() is a frequently used C function which is always safe to be called.
Add a safe abstraction for rcu_barrier(). Signed-off-by: Philipp Stanner <[email protected]> --- rust/kernel/sync/rcu.rs | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/rust/kernel/sync/rcu.rs b/rust/kernel/sync/rcu.rs index a32bef6e490b..eef34bf86259 100644 --- a/rust/kernel/sync/rcu.rs +++ b/rust/kernel/sync/rcu.rs @@ -50,3 +50,9 @@ fn drop(&mut self) { pub fn read_lock() -> Guard { Guard::new() } + +/// Wait for all pending call_rcu() callbacks, if there are any. +pub fn rcu_barrier() { + // SAFETY: `rcu_barrier()` is always safe to be called. It just might wait for a grace period. + unsafe { bindings::rcu_barrier() }; +} -- 2.54.0
