static int acpi_processor_hotadd_init(struct acpi_processor *pr)
{
unsigned long long sta;
acpi_status status;
int ret;
status = acpi_evaluate_integer(pr->handle, "_STA", NULL, &sta);
if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT))
return -ENODEV;
ret = acpi_map_lsapic(pr->handle, &pr->id);
if (ret)
return ret;
ret = arch_register_cpu(pr->id);
if (ret) {
acpi_unmap_lsapic(pr->id);
return ret;
}
/*
* CPU got hot-added, but cpu_data is not initialized yet. Set a flag
* to delay cpu_idle/throttling initialization and do it when the CPU
* gets online for the first time.
*/
pr_info("CPU%d has been hot-added\n", pr->id);
pr->flags.need_hotplug_init = 1;
return 0;
}
static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr)
{
acpi_handle handle = pr->handle;
if (!is_processor_present(handle)) {
return AE_ERROR;
}
if (acpi_map_lsapic(handle, &pr->id))
return AE_ERROR;
if (arch_register_cpu(pr->id)) {
acpi_unmap_lsapic(pr->id);
return AE_ERROR;
}
/* CPU got hot-plugged, but cpu_data is not initialized yet
* Set flag to delay cpu_idle/throttling initialization
* in:
* acpi_processor_add()
* acpi_processor_get_info()
* and do it when the CPU gets online the first time
* TBD: Cleanup above functions and try to do this more elegant.
*/
printk(KERN_INFO "CPU %d got hotplugged\n", pr->id);
pr->flags.need_hotplug_init = 1;
return AE_OK;
}
static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu)
{
if (!is_processor_present(handle)) {
return AE_ERROR;
}
if (acpi_map_lsapic(handle, p_cpu))
return AE_ERROR;
if (arch_register_cpu(*p_cpu)) {
acpi_unmap_lsapic(*p_cpu);
return AE_ERROR;
}
return AE_OK;
}
static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu)
{
ACPI_FUNCTION_TRACE("acpi_processor_hotadd_init");
if (!is_processor_present(handle)) {
return_VALUE(AE_ERROR);
}
if (acpi_map_lsapic(handle, p_cpu))
return_VALUE(AE_ERROR);
if (arch_register_cpu(*p_cpu)) {
acpi_unmap_lsapic(*p_cpu);
return_VALUE(AE_ERROR);
}
return_VALUE(AE_OK);
}
static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr)
{
acpi_handle handle = pr->handle;
if (!is_processor_present(handle)) {
return AE_ERROR;
}
if (acpi_map_lsapic(handle, &pr->id))
return AE_ERROR;
if (arch_register_cpu(pr->id)) {
acpi_unmap_lsapic(pr->id);
return AE_ERROR;
}
printk(KERN_INFO "CPU %d got hotplugged\n", pr->id);
pr->flags.need_hotplug_init = 1;
return AE_OK;
}