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authorAshwin Chaugule <ashwin.chaugule@linaro.org>2015-09-09 23:27:06 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-10-13 00:08:03 +0300
commit56cdc2a05c248c9dfe2480813fc34a4e6d7a77db (patch)
tree1733c432ba51f67f18e7b6de0a0c39c6ccdc214d /drivers/acpi/acpi_processor.c
parent5477fb3bd1e8e43299761850318fe0057172a24a (diff)
downloadlinux-56cdc2a05c248c9dfe2480813fc34a4e6d7a77db.tar.xz
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 <ashwin.chaugule@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpi_processor.c')
-rw-r--r--drivers/acpi/acpi_processor.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 985b8a83184e..6979186dbd4b 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -164,6 +164,24 @@ static int acpi_processor_errata(void)
-------------------------------------------------------------------------- */
#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;