ACPI: Add weak routines for ACPI CPU Hotplug
Add weak functions for architectures which do not support
hot-adding and removing CPUs which aren't detected at
bootup. (e.g. via MADT).
This helps preserve the Kconfig dependency from:
commit cbfc1bae55bb ("[ACPI] ACPI_HOTPLUG_CPU Kconfig dependency
update")
prevent:
HOTPLUG_CPU=y
ACPI_PROCESSOR=y
ACPI_HOTPLUG_CPU=n
Signed-off-by: Ashwin Chaugule <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 985b8a8..6979186 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -164,6 +164,24 @@
-------------------------------------------------------------------------- */
#ifdef CONFIG_ACPI_HOTPLUG_CPU
+int __weak acpi_map_cpu(acpi_handle handle,
+ phys_cpuid_t physid, int *pcpu)
+{
+ return -ENODEV;
+}
+
+int __weak acpi_unmap_cpu(int cpu)
+{
+ return -ENODEV;
+}
+
+int __weak arch_register_cpu(int cpu)
+{
+ return -ENODEV;
+}
+
+void __weak arch_unregister_cpu(int cpu) {}
+
static int acpi_processor_hotadd_init(struct acpi_processor *pr)
{
unsigned long long sta;
