[PATCH rcu 15/18] rcutorture: Add preempt_count() to rcutorture_one_extend_check() diagnostics

From: Paul E. McKenney
Date: Thu Dec 12 2024 - 13:51:59 EST


This commit adds the value of preempt_count() to the diagnostics produced
by rcutorture_one_extend_check() to improve debugging.

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
---
kernel/rcu/rcutorture.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 235a73dad2801..70c27bd67be1e 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -1872,7 +1872,7 @@ static void rcu_torture_reader_do_mbchk(long myid, struct rcu_torture *rtp,
}

// Verify the specified RCUTORTURE_RDR* state.
-#define ROEC_ARGS "%s %s: Current %#x To add %#x To remove %#x\n", __func__, s, curstate, new, old
+#define ROEC_ARGS "%s %s: Current %#x To add %#x To remove %#x preempt_count() %#x\n", __func__, s, curstate, new, old, preempt_count()
static void rcutorture_one_extend_check(char *s, int curstate, int new, int old, bool insoftirq)
{
if (!IS_ENABLED(CONFIG_RCU_TORTURE_TEST_CHK_RDR_STATE))
--
2.40.1