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Code Issues Releases Wiki Activity

rcu/rcutorture: Use call_rcu_hurry() where needed

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call_rcu() changes to save power will change the behavior of rcutorture
tests. Use the call_rcu_hurry() API instead which reverts to the old
behavior.

[ paulmck: Apply s/call_rcu_flush/call_rcu_hurry/ feedback from Tejun Heo. ]

Reported-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Joel Fernandes (Google) 2022-10-16 16:23:01 +00:00 committed by Paul E. McKenney
parent 723df859d8
commit 405d8e91f0
1 changed files with 8 additions and 8 deletions
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16
kernel/rcu/rcutorture.c
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@ -510,7 +510,7 @@ static unsigned long rcu_no_completed(void)
static void rcu_torture_deferred_free(struct rcu_torture *p)
{
call_rcu(&p->rtort_rcu, rcu_torture_cb);
call_rcu_hurry(&p->rtort_rcu, rcu_torture_cb);
}
static void rcu_sync_torture_init(void)
@ -551,7 +551,7 @@ static struct rcu_torture_ops rcu_ops = {
.start_gp_poll_exp_full = start_poll_synchronize_rcu_expedited_full,
.poll_gp_state_exp = poll_state_synchronize_rcu,
.cond_sync_exp = cond_synchronize_rcu_expedited,
.call = call_rcu,
.call = call_rcu_hurry,
.cb_barrier = rcu_barrier,
.fqs = rcu_force_quiescent_state,
.stats = NULL,
@ -848,7 +848,7 @@ static void rcu_tasks_torture_deferred_free(struct rcu_torture *p)
static void synchronize_rcu_mult_test(void)
{
synchronize_rcu_mult(call_rcu_tasks, call_rcu);
synchronize_rcu_mult(call_rcu_tasks, call_rcu_hurry);
}
static struct rcu_torture_ops tasks_ops = {
@ -3388,13 +3388,13 @@ static void rcu_test_debug_objects(void)
/* Try to queue the rh2 pair of callbacks for the same grace period. */
preempt_disable(); /* Prevent preemption from interrupting test. */
rcu_read_lock(); /* Make it impossible to finish a grace period. */
call_rcu(&rh1, rcu_torture_leak_cb); /* Start grace period. */
call_rcu_hurry(&rh1, rcu_torture_leak_cb); /* Start grace period. */
local_irq_disable(); /* Make it harder to start a new grace period. */
call_rcu(&rh2, rcu_torture_leak_cb);
call_rcu(&rh2, rcu_torture_err_cb); /* Duplicate callback. */
call_rcu_hurry(&rh2, rcu_torture_leak_cb);
call_rcu_hurry(&rh2, rcu_torture_err_cb); /* Duplicate callback. */
if (rhp) {
call_rcu(rhp, rcu_torture_leak_cb);
call_rcu(rhp, rcu_torture_err_cb); /* Another duplicate callback. */
call_rcu_hurry(rhp, rcu_torture_leak_cb);
call_rcu_hurry(rhp, rcu_torture_err_cb); /* Another duplicate callback. */
}
local_irq_enable();
rcu_read_unlock();