rcutorture: Dump # online CPUs on insufficient cb-flood laundering

This commit adds the number of online CPUs to the state dump following
an unsuccesful callback-flood test.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>

diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 45d6b4c3d199c13481b281360c2f50d75e600cef..6611ef3e71c33fd68eb7acc8e3d1767afd7e3dc7 100644 (file)
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -2833,12 +2833,12 @@ static void rcu_torture_fwd_prog_cr(struct rcu_fwd *rfp)
        if (!torture_must_stop() && !READ_ONCE(rcu_fwd_emergency_stop) &&
            !shutdown_time_arrived()) {
                WARN_ON(n_max_gps < MIN_FWD_CBS_LAUNDERED);
-               pr_alert("%s Duration %lu barrier: %lu pending %ld n_launders: %ld n_launders_sa: %ld n_max_gps: %ld n_max_cbs: %ld cver %ld gps %ld\n",
+               pr_alert("%s Duration %lu barrier: %lu pending %ld n_launders: %ld n_launders_sa: %ld n_max_gps: %ld n_max_cbs: %ld cver %ld gps %ld #online %u\n",
                         __func__,
                         stoppedat - rfp->rcu_fwd_startat, jiffies - stoppedat,
                         n_launders + n_max_cbs - n_launders_cb_snap,
                         n_launders, n_launders_sa,
-                        n_max_gps, n_max_cbs, cver, gps);
+                        n_max_gps, n_max_cbs, cver, gps, num_online_cpus());
                atomic_long_add(n_max_cbs, &rcu_fwd_max_cbs);
                mutex_lock(&rcu_fwd_mutex); // Serialize histograms.
                rcu_torture_fwd_cb_hist(rfp);