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

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
...@@ -1377,6 +1377,7 @@ static bool rcu_torture_one_read(struct torture_random_state *trsp) ...@@ -1377,6 +1377,7 @@ static bool rcu_torture_one_read(struct torture_random_state *trsp)
struct rt_read_seg *rtrsp1; struct rt_read_seg *rtrsp1;
unsigned long long ts; unsigned long long ts;
WARN_ON_ONCE(!rcu_is_watching());
newstate = rcutorture_extend_mask(readstate, trsp); newstate = rcutorture_extend_mask(readstate, trsp);
rcutorture_one_extend(&readstate, newstate, trsp, rtrsp++); rcutorture_one_extend(&readstate, newstate, trsp, rtrsp++);
started = cur_ops->get_gp_seq(); started = cur_ops->get_gp_seq();
......
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