rcu: Convert rcutree to hotplug state machine

[cascardo/linux.git] / kernel / cpu.c

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 008e2fd..f24f459 100644 (file)
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -1205,6 +1205,11 @@ static struct cpuhp_step cpuhp_bp_states[] = {
                .startup = NULL,
                .teardown = timers_dead_cpu,
        },
+       [CPUHP_RCUTREE_PREP] = {
+               .name = "RCU-tree prepare",
+               .startup = rcutree_prepare_cpu,
+               .teardown = rcutree_dead_cpu,
+       },
        /*
         * Preparatory and dead notifiers. Will be replaced once the notifiers
         * are converted to states.
@@ -1263,6 +1268,10 @@ static struct cpuhp_step cpuhp_ap_states[] = {
                .startup                = sched_cpu_starting,
                .teardown               = sched_cpu_dying,
        },
+       [CPUHP_AP_RCUTREE_DYING] = {
+               .startup = NULL,
+               .teardown = rcutree_dying_cpu,
+       },
        /*
         * Low level startup/teardown notifiers. Run with interrupts
         * disabled. Will be removed once the notifiers are converted to
@@ -1296,6 +1305,11 @@ static struct cpuhp_step cpuhp_ap_states[] = {
                .startup = workqueue_online_cpu,
                .teardown = workqueue_offline_cpu,
        },
+       [CPUHP_AP_RCUTREE_ONLINE] = {
+               .name = "RCU-tree online",
+               .startup = rcutree_online_cpu,
+               .teardown = rcutree_offline_cpu,
+       },
 
        /*
         * Online/down_prepare notifiers. Will be removed once the notifiers