[ACPI] update CONFIG_ACPI_CONTAINER Kconfig help
Signed-off-by: Keiichiro Tokunaga <tokunaga.keiich@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 670fdb5..4aa26ac 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -327,8 +327,13 @@
depends on EXPERIMENTAL
default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
---help---
- This is the ACPI generic container driver which supports
- ACPI0004, PNP0A05 and PNP0A06 devices
+ This allows _physical_ insertion and removal of CPUs and memory.
+ This can be useful, for example, on NUMA machines that support
+ ACPI based physical hotplug of nodes, or non-NUMA machines that
+ support physical cpu/memory hot-plug.
+
+ If one selects "m", this driver can be loaded with
+ "modprobe acpi_container".
config ACPI_HOTPLUG_MEMORY
tristate "Memory Hotplug"