summaryrefslogtreecommitdiffstats
path: root/kernel/rcu
diff options
context:
space:
mode:
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-12-04 09:48:59 -0800
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2018-02-20 16:10:19 -0800
commit3016611eedaff3e75feba54392c105db214a4f52 (patch)
treea1e1a010b3115651ea252fdacac732ee8de0ed7f /kernel/rcu
parenta7c8655b073d89303911c89d0fd9fc4be7631fbe (diff)
downloadlinux-3016611eedaff3e75feba54392c105db214a4f52.tar.bz2
rcu: Fix CPU offload boot message when no CPUs are offloaded
In CONFIG_RCU_NOCB_CPU=y kernels, if the boot parameters indicate that none of the CPUs should in fact be offloaded, the following somewhat obtuse message appears: Offload RCU callbacks from CPUs: . This commit therefore makes the message at least grammatically correct in this case: Offload RCU callbacks from CPUs: (none) Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
-rw-r--r--kernel/rcu/tree_plugin.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index fb88a028deec..93f5649ffd2b 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -2312,8 +2312,11 @@ void __init rcu_init_nohz(void)
cpumask_and(rcu_nocb_mask, cpu_possible_mask,
rcu_nocb_mask);
}
- pr_info("\tOffload RCU callbacks from CPUs: %*pbl.\n",
- cpumask_pr_args(rcu_nocb_mask));
+ if (cpumask_empty(rcu_nocb_mask))
+ pr_info("\tOffload RCU callbacks from CPUs: (none).\n");
+ else
+ pr_info("\tOffload RCU callbacks from CPUs: %*pbl.\n",
+ cpumask_pr_args(rcu_nocb_mask));
if (rcu_nocb_poll)
pr_info("\tPoll for callbacks from no-CBs CPUs.\n");