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

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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>
This commit is contained in:
Paul E. McKenney 2024-02-19 17:00:31 -08:00 committed by Uladzislau Rezki (Sony)
parent 1a140b46da
commit 0a0467af0a
1 changed files with 2 additions and 2 deletions
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4
kernel/rcu/rcutorture.c
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@ -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);