Searched hist:d22ddcbc4fb7a483d0721eddfda3f0558821d372 (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/include/acpi/ |
| H A D | acpi_bus.h | diff d22ddcbc4fb7a483d0721eddfda3f0558821d372 Sun Dec 29 08:25:35 CST 2013 Rafael J. Wysocki <rafael.j.wysocki@intel.com> ACPI / hotplug: Add demand_offline hotplug profile flag
Add a new ACPI hotplug profile flag, demand_offline, such that if
set for the given ACPI device object's scan handler, it will cause
acpi_scan_hot_remove() to check if that device object's physical
companions are offline upfront and fail the hot removal if that
is not the case.
That flag will be useful to overcome a problem with containers on
some system where they can only be hot-removed after some cleanup
operations carried out by user space, which needs to be notified
of the container hot-removal before the kernel attempts to offline
devices in the container. In those cases the current implementation
of acpi_scan_hot_remove() is not sufficient, because it first tries
to offline the devices in the container and only if that is
suffcessful it tries to offline the container itself. As a result,
the container hot-removal notification is not delivered to user space
at the right time.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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| /openbmc/linux/drivers/acpi/ |
| H A D | scan.c | diff d22ddcbc4fb7a483d0721eddfda3f0558821d372 Sun Dec 29 08:25:35 CST 2013 Rafael J. Wysocki <rafael.j.wysocki@intel.com> ACPI / hotplug: Add demand_offline hotplug profile flag
Add a new ACPI hotplug profile flag, demand_offline, such that if
set for the given ACPI device object's scan handler, it will cause
acpi_scan_hot_remove() to check if that device object's physical
companions are offline upfront and fail the hot removal if that
is not the case.
That flag will be useful to overcome a problem with containers on
some system where they can only be hot-removed after some cleanup
operations carried out by user space, which needs to be notified
of the container hot-removal before the kernel attempts to offline
devices in the container. In those cases the current implementation
of acpi_scan_hot_remove() is not sufficient, because it first tries
to offline the devices in the container and only if that is
suffcessful it tries to offline the container itself. As a result,
the container hot-removal notification is not delivered to user space
at the right time.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|