Commit df83fff7 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcu-tasks: Make grace-period-age message human-readable 



This commit adds a few words to the informative message that appears
every ten seconds in RCU Tasks and RCU Tasks Trace grace periods.
This message currently reads as follows:

rcu_tasks_wait_gp: rcu_tasks grace period 1046 is 10088 jiffies old.

After this change, it provides additional context, instead reading
as follows:

rcu_tasks_wait_gp: rcu_tasks grace period number 1046 (since boot) is 10088 jiffies old.

Reported-by: default avatarAlexei Starovoitov <ast@kernel.org>
Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent fdbdb868

kernel/rcu/tasks.h

+1 −1
Original line number Diff line number Diff line
@@ -728,7 +728,7 @@ static void rcu_tasks_wait_gp(struct rcu_tasks *rtp) 
		if (rtsi > 0 && !reported && time_after(j, lastinfo + rtsi)) {

			lastinfo = j;

			rtsi = rtsi * rcu_task_stall_info_mult;

			pr_info("%s: %s grace period %lu is %lu jiffies old.\n",

			pr_info("%s: %s grace period number %lu (since boot) is %lu jiffies old.\n",

				__func__, rtp->kname, rtp->tasks_gp_seq, j - rtp->gp_start);

		}

	}