Commit-ID: 73d665b1410afae405309ad4475a98924776ab13
Gitweb: https://git.kernel.org/tip/73d665b1410afae405309ad4475a98924776ab13
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxx>
AuthorDate: Thu, 4 Oct 2018 10:54:22 -0700
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxx>
CommitDate: Sat, 1 Dec 2018 12:45:40 -0800
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 <paulmck@xxxxxxxxxxxxx>
---
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");
|