CPUHP_AP_SCHED_MIGRATE_DYING doesn't exist, it looks like this was supposed to refer to CPUHP_AP_SCHED_STARTING's teardown callback i.e. sched_cpu_dying.
Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Sebastian Andrzej Siewior <[email protected]> Cc: Boris Ostrovsky <[email protected]> Cc: Dietmar Eggemann <[email protected]> Cc: Quentin Perret <[email protected]> --- kernel/cpu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/cpu.c b/kernel/cpu.c index 04892a82f6ac..944c7efdf092 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -780,8 +780,8 @@ static int takedown_cpu(unsigned int cpu) BUG_ON(cpu_online(cpu)); /* - * The CPUHP_AP_SCHED_MIGRATE_DYING callback will have removed all - * runnable tasks from the cpu, there's only the idle task left now + * The teardown callback for CPUHP_AP_SCHED_STARTING will have removed + * all runnable tasks from the cpu, there's only the idle task left now * that the migration thread is done doing the stop_machine thing. * * Wait for the stop thread to go away. -- 2.14.1

