sched: Make set_cpu_rq_start_time() a built in hotplug state

Start distangling the maze of hotplug notifiers in the scheduler.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 3e3f6e49eabb..f46d02b966bf 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -1236,6 +1236,12 @@ static struct cpuhp_step cpuhp_ap_states[] = {
                 .name                   = "ap:offline",
                 .cant_stop              = true,
         },
+        /* First state is scheduler control. Interrupts are disabled */
+        [CPUHP_AP_SCHED_STARTING] = {
+                .name                   = "sched:starting",
+                .startup                = sched_cpu_starting,
+                .teardown               = NULL,
+        },
         /*
          * Low level startup/teardown notifiers. Run with interrupts
          * disabled. Will be removed once the notifiers are converted to