[PATCH v6 7/7] ACPI: Add weak routines for ACPI CPU Hotplug
From: Ashwin Chaugule <hidden>
Date: 2015-06-15 20:09:35
Also in:
linux-acpi
Subsystem:
acpi, the rest · Maintainers:
"Rafael J. Wysocki", Linus Torvalds
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 <redacted>
---
drivers/acpi/acpi_processor.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 58f335c..1fbf252 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;
--
1.9.1