1 files changed, 5 insertions, 0 deletions

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 2f8f338e77cf..15be70aae8ac 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -1344,6 +1344,11 @@ static struct cpuhp_step cpuhp_hp_states[] = {
                 .startup.single         = perf_event_init_cpu,
                 .teardown.single        = perf_event_exit_cpu,
         },
+        [CPUHP_AP_WATCHDOG_ONLINE] = {
+                .name                   = "lockup_detector:online",
+                .startup.single         = lockup_detector_online_cpu,
+                .teardown.single        = lockup_detector_offline_cpu,
+        },
         [CPUHP_AP_WORKQUEUE_ONLINE] = {
                 .name                   = "workqueue:online",
                 .startup.single         = workqueue_online_cpu,