Commit efa3c40c authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcu: Add test code for semaphore-like SRCU readers 



This commit adds trivial test code for srcu_down_read() and
srcu_up_read().

Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent 0b1182bd

kernel/rcu/update.c

+3 −0
Original line number Diff line number Diff line
@@ -555,9 +555,12 @@ struct early_boot_kfree_rcu { 
static void early_boot_test_call_rcu(void)

{

	static struct rcu_head head;

	int idx;

	static struct rcu_head shead;

	struct early_boot_kfree_rcu *rhp;



	idx = srcu_down_read(&early_srcu);

	srcu_up_read(&early_srcu, idx);

	call_rcu(&head, test_callback);

	early_srcu_cookie = start_poll_synchronize_srcu(&early_srcu);

	call_srcu(&early_srcu, &shead, test_callback);