This patchset supports ACPI OSPM Status Indication (_OST) method for ACPI CPU/memory/container hotplug operations and sysfs eject. After ACPI hotplug operation has completed, OSPM calls _OST to indicate the result of the operation to the platform. If _OST is not present, this patchset has no effect on the platform. This _OST support can be enabled or disabled with a new config option CONFIG_ACPI_HOTPLUG_OST. This option is disabled by default. When this option is disabled, this patchset has no effect on the platform. Some platforms may require the OS to support _OST in order to support ACPI hotplug operations. For example, if a platform has the management console where user can request a hotplug operation from, this _OST support would be required for the management console to show the result of the hotplug request to user. The _OST definition can be found in section 6.3.5 of ACPI 5.0 spec. The HPPF spec below also describes hotplug flows with _OST. DIG64 Hot-Plug & Partitioning Flow (HPPF) Specification R1.0 http://www.dig64.org/home/DIG64_HPPF_R1_0.pdf The changes have been tested with simulated _OST methods. v3: - Added more descriptions to the change logs. v2: - Added CONFIG_ACPI_HOTPLUG_OST option. - Added _OST support for container hotplug and sysfs eject. - Reordered patchset to enable _OST support bit of _OSC in the last patch. --- Toshi Kani (7): ACPI: Add CONFIG_HOTPLUG_OST option ACPI: Add an interface to evaluate _OST ACPI: Add _OST support for sysfs eject ACPI: Add _OST support for ACPI CPU hotplug ACPI: Add _OST support for ACPI memory hotplug ACPI: Add _OST support for ACPI container hotplug ACPI: Set hotplug _OST support bit to _OSC drivers/acpi/Kconfig | 14 +++++++++ drivers/acpi/acpi_memhotplug.c | 43 +++++++++++++++++++++------- drivers/acpi/bus.c | 4 +++ drivers/acpi/container.c | 43 +++++++++++++++++++---------- drivers/acpi/processor_driver.c | 28 +++++++++++++----- drivers/acpi/scan.c | 58 +++++++++++++++++++++++++++++++++------ drivers/acpi/utils.c | 38 +++++++++++++++++++++++++ include/acpi/acpi_bus.h | 12 +++++++- include/linux/acpi.h | 31 ++++++++++++++++++++- 9 files changed, 226 insertions(+), 45 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
