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rcu/nocb: Add nocb CB kthread list to show_rcu_nocb_state() output

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This commit improves debuggability by indicating laying out the order
in which rcuoc kthreads appear in the ->nocb_next_cb_rdp list.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2020-12-18 13:17:37 -08:00
parent 341690611f
commit 3d0cef50f3
1 changed files with 1 additions and 0 deletions
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kernel/rcu/tree_plugin.h
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@ -2730,6 +2730,7 @@ static void show_rcu_nocb_state(struct rcu_data *rdp)
sprintf(bufr, "%ld", rsclp->gp_seq[RCU_NEXT_READY_TAIL]);
pr_info(" CB %d^%d->%d %c%c%c%c%c%c F%ld L%ld C%d %c%c%s%c%s%c%c q%ld %c CPU %d%s\n",
rdp->cpu, rdp->nocb_gp_rdp->cpu,
rdp->nocb_next_cb_rdp ? rdp->nocb_next_cb_rdp->cpu : -1,
"kK"[!!rdp->nocb_cb_kthread],
"bB"[raw_spin_is_locked(&rdp->nocb_bypass_lock)],
"cC"[!!atomic_read(&rdp->nocb_lock_contended)],