/*
*Complete the shutdown and place the processor offline.
*
* Called at splsched in the shutdown context.
*/
void
processor_offline(
processor_t processor)
{
thread_t new_thread, old_thread = processor->active_thread;
new_thread = processor->idle_thread;
processor->active_thread = new_thread;
processor->current_pri = IDLEPRI;
processor->current_thmode = TH_MODE_NONE;
processor->deadline = UINT64_MAX;
new_thread->last_processor = processor;
processor->last_dispatch = mach_absolute_time();
timer_stop(PROCESSOR_DATA(processor, thread_timer), processor->last_dispatch);
machine_set_current_thread(new_thread);
thread_dispatch(old_thread, new_thread);
PMAP_DEACTIVATE_KERNEL(processor->cpu_id);
cpu_sleep();
panic("zombie processor");
/*NOTREACHED*/
}
void
processor_doshutdown(
processor_t processor)
{
register int cpu = processor->slot_num;
timer_switch(&kernel_timer[cpu]);
/*
* Ok, now exit this cpu.
*/
PMAP_DEACTIVATE_KERNEL(cpu);
cpu_data[cpu].active_thread = THREAD_NULL;
active_kloaded[cpu] = THR_ACT_NULL;
cpu_down(cpu);
thread_wakeup((event_t)processor);
halt_cpu();
panic("zombie processor");
/*
* The action thread returns to life after the call to
* switch_to_shutdown_context above, on some other cpu.
*/
/*NOTREACHED*/
}
/*
* Complete the shutdown and place the processor offline.
*
* Called at splsched in the shutdown context.
* This performs a minimal thread_invoke() to the idle thread,
* so it needs to be kept in sync with what thread_invoke() does.
*
* The onlining half of this is done in load_context().
*/
void
processor_offline(
processor_t processor)
{
assert(processor == current_processor());
assert(processor->active_thread == current_thread());
thread_t old_thread = processor->active_thread;
thread_t new_thread = processor->idle_thread;
processor->active_thread = new_thread;
processor->current_pri = IDLEPRI;
processor->current_thmode = TH_MODE_NONE;
processor->starting_pri = IDLEPRI;
processor->current_sfi_class = SFI_CLASS_KERNEL;
processor->deadline = UINT64_MAX;
new_thread->last_processor = processor;
uint64_t ctime = mach_absolute_time();
processor->last_dispatch = ctime;
old_thread->last_run_time = ctime;
/* Update processor->thread_timer and ->kernel_timer to point to the new thread */
thread_timer_event(ctime, &new_thread->system_timer);
PROCESSOR_DATA(processor, kernel_timer) = &new_thread->system_timer;
timer_stop(PROCESSOR_DATA(processor, current_state), ctime);
KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
MACHDBG_CODE(DBG_MACH_SCHED, MACH_SCHED) | DBG_FUNC_NONE,
old_thread->reason, (uintptr_t)thread_tid(new_thread),
old_thread->sched_pri, new_thread->sched_pri, 0);
machine_set_current_thread(new_thread);
thread_dispatch(old_thread, new_thread);
PMAP_DEACTIVATE_KERNEL(processor->cpu_id);
cpu_sleep();
panic("zombie processor");
/*NOTREACHED*/
}
