1 files changed, 10 insertions, 0 deletions

diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index ccfc2086cd4b..e057d338daa4 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -186,6 +186,13 @@ static int __cpuinit tick_nohz_cpu_down_callback(struct notifier_block *nfb,
         return NOTIFY_OK;
 }
 
+/*
+ * Worst case string length in chunks of CPU range seems 2 steps
+ * separations: 0,2,4,6,...
+ * This is NR_CPUS + sizeof('\0')
+ */
+static char __initdata nohz_ext_buf[NR_CPUS + 1];
+
 static int __init init_tick_nohz_extended(void)
 {
         cpumask_var_t online_nohz;
@@ -225,6 +232,9 @@ static int __init init_tick_nohz_extended(void)
         put_online_cpus();
         free_cpumask_var(online_nohz);
 
+        cpulist_scnprintf(nohz_ext_buf, sizeof(nohz_ext_buf), nohz_extended_mask);
+        pr_info("NO_HZ: Full dynticks CPUs: %s.\n", nohz_ext_buf);
+
         return 0;
 }
 core_initcall(init_tick_nohz_extended);