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

Commit Message

Paul E. McKenney Dec. 12, 2024, 6:49 p.m. UTC

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 <[e-mail]>
---
 kernel/rcu/rcutorture.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

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))