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Message-Id: <20241009180045.777721-5-paulmck@kernel.org>
Date: Wed, 9 Oct 2024 11:00:43 -0700
From: "Paul E. McKenney" <paulmck@...nel.org>
To: frederic@...nel.org,
rcu@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
kernel-team@...a.com,
rostedt@...dmis.org,
"Paul E. McKenney" <paulmck@...nel.org>
Subject: [PATCH rcu 5/7] rcutorture: Test start-poll primitives with interrupts disabled
This commit tests the ->start_poll() and ->start_poll_full() functions
with interrupts disabled, but only for RCU variants setting the
->start_poll_irqsoff flag.
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
kernel/rcu/rcutorture.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index bb75dbf5c800c..b4cb7623a8bfc 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -393,6 +393,7 @@ struct rcu_torture_ops {
int slow_gps;
int no_pi_lock;
int debug_objects;
+ int start_poll_irqsoff;
const char *name;
};
@@ -581,6 +582,7 @@ static struct rcu_torture_ops rcu_ops = {
.can_boost = IS_ENABLED(CONFIG_RCU_BOOST),
.extendables = RCUTORTURE_MAX_EXTEND,
.debug_objects = 1,
+ .start_poll_irqsoff = 1,
.name = "rcu"
};
@@ -1695,14 +1697,22 @@ rcu_torture_fakewriter(void *arg)
cur_ops->cond_sync_exp_full(&gp_snap_full);
break;
case RTWS_POLL_GET:
+ if (cur_ops->start_poll_irqsoff)
+ local_irq_disable();
gp_snap = cur_ops->start_gp_poll();
+ if (cur_ops->start_poll_irqsoff)
+ local_irq_enable();
while (!cur_ops->poll_gp_state(gp_snap)) {
torture_hrtimeout_jiffies(torture_random(&rand) % 16,
&rand);
}
break;
case RTWS_POLL_GET_FULL:
+ if (cur_ops->start_poll_irqsoff)
+ local_irq_disable();
cur_ops->start_gp_poll_full(&gp_snap_full);
+ if (cur_ops->start_poll_irqsoff)
+ local_irq_enable();
while (!cur_ops->poll_gp_state_full(&gp_snap_full)) {
torture_hrtimeout_jiffies(torture_random(&rand) % 16,
&rand);
--
2.40.1
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