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rcutorture: Test start_poll_synchronize_rcu() and poll_state_synchronize_rcu() 

This commit causes rcutorture to test the new start_poll_synchronize_rcu()
and poll_state_synchronize_rcu() functions.  Because of the difficulty of
determining the nature of a synchronous RCU grace (expedited or not),
the test that insisted that poll_state_synchronize_rcu() detect an
intervening synchronize_rcu() had to be dropped.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2021-02-25 20:56:10 -08:00
parent 0909fc2b2c
commit 7ac3fdf099
1 changed files with 3 additions and 9 deletions
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12
kernel/rcu/rcutorture.c
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@ -494,6 +494,8 @@ static struct rcu_torture_ops rcu_ops = {
.sync = synchronize_rcu, .sync = synchronize_rcu,
.exp_sync = synchronize_rcu_expedited, .exp_sync = synchronize_rcu_expedited,
.get_gp_state = get_state_synchronize_rcu, .get_gp_state = get_state_synchronize_rcu,
.start_gp_poll = start_poll_synchronize_rcu,
.poll_gp_state = poll_state_synchronize_rcu,
.cond_sync = cond_synchronize_rcu, .cond_sync = cond_synchronize_rcu,
.call = call_rcu, .call = call_rcu,
.cb_barrier = rcu_barrier, .cb_barrier = rcu_barrier,
@ -1223,14 +1225,6 @@ rcu_torture_writer(void *arg)
WARN_ON_ONCE(1); WARN_ON_ONCE(1);
break; break;
} }
if (cur_ops->get_gp_state && cur_ops->poll_gp_state)
WARN_ONCE(rcu_torture_writer_state != RTWS_DEF_FREE &&
!cur_ops->poll_gp_state(cookie),
"%s: Cookie check 2 failed %s(%d) %lu->%lu\n",
__func__,
rcu_torture_writer_state_getname(),
rcu_torture_writer_state,
cookie, cur_ops->get_gp_state());
} }
WRITE_ONCE(rcu_torture_current_version, WRITE_ONCE(rcu_torture_current_version,
rcu_torture_current_version + 1); rcu_torture_current_version + 1);
@ -1589,7 +1583,7 @@ static bool rcu_torture_one_read(struct torture_random_state *trsp, long myid)
preempt_enable(); preempt_enable();
if (cur_ops->get_gp_state && cur_ops->poll_gp_state) if (cur_ops->get_gp_state && cur_ops->poll_gp_state)
WARN_ONCE(cur_ops->poll_gp_state(cookie), WARN_ONCE(cur_ops->poll_gp_state(cookie),
"%s: Cookie check 3 failed %s(%d) %lu->%lu\n", "%s: Cookie check 2 failed %s(%d) %lu->%lu\n",
__func__, __func__,
rcu_torture_writer_state_getname(), rcu_torture_writer_state_getname(),
rcu_torture_writer_state, rcu_torture_writer_state,