rcu/nocb: Choose the right rcuog/rcuop kthreads to output

The show_rcu_nocb_gp_state() function is supposed to dump out the rcuog
kthread and the show_rcu_nocb_state() function is supposed to dump out
the rcuo[ps] kthread.  Currently, both do a mixture, which is not optimal
for debugging, even though it does not affect functionality.

This commit therefore adjusts these two functions to focus on their
respective kthreads.

Signed-off-by: Zqiang <qiang1.zhang@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

diff --git a/kernel/rcu/tree_nocb.h b/kernel/rcu/tree_nocb.h
index a8f574d..f20aec4 100644 (file)
--- a/kernel/rcu/tree_nocb.h
+++ b/kernel/rcu/tree_nocb.h
@@ -1452,8 +1452,8 @@ static void show_rcu_nocb_gp_state(struct rcu_data *rdp)
                (long)rdp->nocb_gp_seq,
                rnp->grplo, rnp->grphi, READ_ONCE(rdp->nocb_gp_loops),
                rdp->nocb_gp_kthread ? task_state_to_char(rdp->nocb_gp_kthread) : '.',
-               rdp->nocb_cb_kthread ? (int)task_cpu(rdp->nocb_gp_kthread) : -1,
-               show_rcu_should_be_on_cpu(rdp->nocb_cb_kthread));
+               rdp->nocb_gp_kthread ? (int)task_cpu(rdp->nocb_gp_kthread) : -1,
+               show_rcu_should_be_on_cpu(rdp->nocb_gp_kthread));
 }
 
 /* Dump out nocb kthread state for the specified rcu_data structure. */
@@ -1497,7 +1497,7 @@ static void show_rcu_nocb_state(struct rcu_data *rdp)
                ".B"[!!rcu_cblist_n_cbs(&rdp->nocb_bypass)],
                rcu_segcblist_n_cbs(&rdp->cblist),
                rdp->nocb_cb_kthread ? task_state_to_char(rdp->nocb_cb_kthread) : '.',
-               rdp->nocb_cb_kthread ? (int)task_cpu(rdp->nocb_gp_kthread) : -1,
+               rdp->nocb_cb_kthread ? (int)task_cpu(rdp->nocb_cb_kthread) : -1,
                show_rcu_should_be_on_cpu(rdp->nocb_cb_kthread));
 
        /* It is OK for GP kthreads to have GP state. */