Commit 77522751 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcutorture: Check for unwatched readers 



RCU is supposed to be watching all non-idle kernel code and also all
softirq handlers.  This commit adds some teeth to this statement by
adding a WARN_ON_ONCE().

Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent bc77a72c

kernel/rcu/rcutorture.c

+1 −0
Original line number Diff line number Diff line
@@ -1377,6 +1377,7 @@ static bool rcu_torture_one_read(struct torture_random_state *trsp) 
	struct rt_read_seg *rtrsp1;

	unsigned long long ts;



	WARN_ON_ONCE(!rcu_is_watching());

	newstate = rcutorture_extend_mask(readstate, trsp);

	rcutorture_one_extend(&readstate, newstate, trsp, rtrsp++);

	started = cur_ops->get_gp_seq();