From 73d665b1410afae405309ad4475a98924776ab13 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Thu, 4 Oct 2018 10:54:22 -0700 Subject: [PATCH] rcutorture: Print forward-progress test age upon failure This commit prints the age of the forward-progress test in jiffies, in order to allow better interpretation of the callback-invocation histograms. Signed-off-by: Paul E. McKenney --- kernel/rcu/rcutorture.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 329f4fb13125..080b5ac6340c 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -1639,7 +1639,8 @@ static void rcu_torture_fwd_cb_hist(void) for (i = ARRAY_SIZE(n_launders_hist) - 1; i > 0; i--) if (n_launders_hist[i] > 0) break; - pr_alert("%s: Callback-invocation histogram:", __func__); + pr_alert("%s: Callback-invocation histogram (duration %lu jiffies):", + __func__, jiffies - rcu_fwd_startat); for (j = 0; j <= i; j++) pr_cont(" %ds: %ld", j + 1, n_launders_hist[j]); pr_cont("\n");