From 54973cdd166b13195a99940cd21a827c3a99cac2 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Thu, 1 Aug 2024 17:34:23 -0700 Subject: [PATCH] rcu: Provide rcu_barrier_cb_is_done() to check rcu_barrier() CBs This commit provides a rcu_barrier_cb_is_done() function that returns true if the *rcu_barrier*() callback passed in is done. This will be used when printing grace-period debugging information. Signed-off-by: "Paul E. McKenney" Signed-off-by: Neeraj Upadhyay --- kernel/rcu/rcu.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h index 38238e595a61..caaed27e476b 100644 --- a/kernel/rcu/rcu.h +++ b/kernel/rcu/rcu.h @@ -255,6 +255,11 @@ static inline void debug_rcu_head_callback(struct rcu_head *rhp) kmem_dump_obj(rhp); } +static inline bool rcu_barrier_cb_is_done(struct rcu_head *rhp) +{ + return rhp->next == rhp; +} + extern int rcu_cpu_stall_suppress_at_boot; static inline bool rcu_stall_is_suppressed_at_boot(void) -- 2.47.3