On Sunday, February 02, 2014 01:52:26 AM Rafael J. Wysocki wrote: > On Wednesday, January 29, 2014 12:57:06 AM Rafael J. Wysocki wrote: > > On Tuesday, January 28, 2014 11:10:30 PM Rafael J. Wysocki wrote: > > > Hi All, > > > > > > It looks like there's time for more adventurous stuff. :-) > > > > > > The following series is on top of the one I sent on Sunday: > > > > > > https://lkml.org/lkml/2014/1/26/191 > > > > > > The final outcome of the patches below is that all ACPI hotplug notifications > > > for PCI devices and for core system things like CPU, memory, PCI roots etc., > > > will be dispatched from acpi_bus_notify() and it is not necessary to install a > > > separate hotplug notify handler for each device any more. > > > > > > [1/5] Attach ACPIPHP hotplug contexts to struct acpi_device objects. > > > [2/5] Introduce wrappers for installing and removing hotplug notify handlers > > > (those wrappers go away later on, but they are useful for separating > > > changes). > > > [3/5] Consolidate ACPI hotplug signaling for PCI and ACPI core. > > > [4/5] Simplify notify handle registration wrapper. > > > [5/5] Dispatch ACPI hotplug notifications for "core" devices and PCI from acpi_bus_notify(). > > > > Unfortunately, I realized that patches [3-5/5] were buggy. The bugs were > > kind of subtle and might not be easy to reproduce, but they were bugs anyway. :-) > > > > A respin of the whole series follows. > > After the Mika's testing it turned out that they were more buggy than I had > though. Oh well. > > The following patchset is a reworked version of the previous one. Functionality-wise > the final result should be very similar, but not exactly the same. > > [1/6] Fix a theoretical race condition in acpi_hotplug_notify_cb(). > [2/6] Move the hotplug context lock definition to the ACPI core (from ACPIPHP). > [3/6] Consolidate ACPI hotplug signaling for PCI and ACPI core (this is a combination > of patches [1-3/5] from the previous series). > [4/6] Rework the handling of eject requests in the ACPI core. > [5/6] Simplify a routine for installing hotplug notify handlers. > [6/6] Dispatch ACPI hotplug notifications for "core" devices and PCI from acpi_bus_notify(). > > This is on top of https://lkml.org/lkml/2014/2/1/123 which in turn is on top of > the current mainline. > > For the adventurous all this stuff is on the test-next branch of linux-pm.git. As stated in the message at http://marc.info/?l=linux-acpi&m=139135963030012&w=4 , patch [1/6] was actaully wrong and the whole patchset had to be reworked for that reason. What follows is an entirely new version: [1/7] Add a new function to ACPICA allowing a callback to be executed under the namespace mutex after calling acpi_ns_get_attached_data(). [2/7] Use the new ACPICA's function to fix a couple of potential races related to ACPI notifies. [3/7] Same as [2/6] above. [4/7] Same as [3/6] above, rebased. [5/7] Same as [4/6] above. [6/7] Same as [5/6] above. [7/7] Dispatch ACPI hotplug notifications for "core" devices and PCI from acpi_bus_notify(). This actually is different from [6/6] above, although it serves the same purpose. Thanks! -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
