From: Paul E. McKenney <paulmck@kernel.org>
Date: Sat, 14 Mar 2026 13:18:48 +0000 (-0700)
Subject: rcutorture: Test call_srcu() with preemption disabled and not
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=95c7d025cc8c3c6c41206e2a18332eb04878b7ef;p=thirdparty%2Fkernel%2Flinux.git

rcutorture: Test call_srcu() with preemption disabled and not

This commit tests invoking call_srcu() with preemption both enabled
and disabled, via acquiring of pi lock.

[ Joel: reword commit message. ]

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
---

diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 3c272413666b2..5f2848b828dc4 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -842,7 +842,14 @@ static unsigned long srcu_torture_completed(void)
 
 static void srcu_torture_deferred_free(struct rcu_torture *rp)
 {
+	unsigned long flags;
+	bool lockit = jiffies & 0x1;
+
+	if (lockit)
+		raw_spin_lock_irqsave(&current->pi_lock, flags);
 	call_srcu(srcu_ctlp, &rp->rtort_rcu, rcu_torture_cb);
+	if (lockit)
+		raw_spin_unlock_irqrestore(&current->pi_lock, flags);
 }
 
 static void srcu_torture_synchronize(void)