| From | paulmck@kernel ... | Subject | [PATCH tip/core/rcu 14/23] rcutorture: Check for unwatched readers | Date | Mon, 22 Jun 2020 17:37:43 -0700 |
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From: "Paul E. McKenney" <paulmck@kernel.org>
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: Paul E. McKenney <paulmck@kernel.org> --- kernel/rcu/rcutorture.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 37455a1..9c31001 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -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(); -- 2.9.5
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