This patchset updates the ACPI system-level (ex. hotplug) notify handling with a new .sys_notify interface. It provides the following changes:
- Allow ACPI drivers to register their system-level (hotplug) notify handlers to a new .sys_notify interface through their acpi_driver table. This removes redundant ACPI namespace walks from ACPI drivers for faster booting. The global notify handler acpi_bus_notify() is called for all system-level ACPI device notifications, which then calls an appropriate driver's handler if any. ACPI drivers no longer need to register or unregister driver's handlers to each device object in ACPI namespace. - Support dynamic ACPI namespace with LoadTable & Unload opcode without any changes in ACPI drivers. There is no need to register / unregister handlers to ACPI device objects getting loaded to / unloaded from ACPI namespace. - Allow ACPI drivers to use a common hotplug handler when it is implemented. It removes functional conflict between driver's notify handler and the global notify handler acpi_bus_notify(). acpi_bus_notify() only calls an appropriate notify handler if any. Note that the changes maintain backward compatibility for ACPI drivers. Any drivers registered their hotplug handlers through the existing interfaces, such as acpi_install_notify_handler() and register_acpi_bus_notifier(), will continue to work as before. The patchset is based on the linux-next branch of linux-pm.git tree. v3: - Fixed to free the ID list when releasing a temporary device. v2: - Protected unbound driver from unloading when calling .sys_notify. - Changed acpi_bus_notify() to call acpi_bus_notify_list first for maintaining the original order. --- Toshi Kani (4): ACPI: Support system notify handler via .sys_notify ACPI: Update processor_driver to use .sys_notify ACPI: Update acpi_memhotplug to use .sys_notify ACPI: Update container to use .sys_notify --- drivers/acpi/acpi_memhotplug.c | 93 ++--------------------------------------- drivers/acpi/bus.c | 64 +++++++++++++++++++++------- drivers/acpi/container.c | 77 ++-------------------------------- drivers/acpi/processor_driver.c | 82 ++++-------------------------------- drivers/acpi/scan.c | 83 ++++++++++++++++++++++++++++++++++++ include/acpi/acpi_bus.h | 6 +++ 6 files changed, 150 insertions(+), 255 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
