synchronize_rcu() is a frequently used C function which is always safe to be called.
Add a safe abstraction for synchronize_rcu(). Signed-off-by: Philipp Stanner <[email protected]> --- rust/kernel/sync/rcu.rs | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/rust/kernel/sync/rcu.rs b/rust/kernel/sync/rcu.rs index eef34bf86259..d86d615467b1 100644 --- a/rust/kernel/sync/rcu.rs +++ b/rust/kernel/sync/rcu.rs @@ -56,3 +56,11 @@ 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() }; } + +/// Wait for one RCU grace period. +/// +/// You typically do this to wait for everyone holding a [`Guard`]. +pub fn synchronize_rcu() { + // SAFETY: `synchronize_rcu()` is always safe to be called. It just waits for a grace period. + unsafe { bindings::synchronize_rcu() }; +} -- 2.54.0
