- timeout = 1000;
- while (!cpu_dead[cpu]) {
- if (--timeout == 0) {
- printk("CPU %u refused to die!\n", cpu);
- break;
- }
- msleep(1);
+ local_irq_disable();
+ idle_task_exit();
+
+ /*
+ * turn off as much as possible, we'll be
+ * kicked out as this will only be invoked
+ * on core99 platforms for now ...
+ */
+
+ printk(KERN_INFO "CPU#%d offline\n", cpu);
+ generic_set_cpu_dead(cpu);
+ smp_wmb();
+
+ /*
+ * Re-enable interrupts. The NAP code needs to enable them
+ * anyways, do it now so we deal with the case where one already
+ * happened while soft-disabled.
+ * We shouldn't get any external interrupts, only decrementer, and the
+ * decrementer handler is safe for use on offline CPUs
+ */
+ local_irq_enable();
+
+ while (1) {
+ /* let's not take timer interrupts too often ... */
+ set_dec(0x7fffffff);
+
+ /* Enter NAP mode */
+ power4_idle();