From: "Paul E. McKenney" <paul...@kernel.org>
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" <paul...@kernel.org>
Signed-off-by: Neeraj Upadhyay <neeraj.upadh...@kernel.org>
---
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)
--
2.40.1
