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| author | Alex Chiang <achiang@hp.com> | 2009-03-20 14:56:56 -0600 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-03-20 14:59:45 -0700 |
| commit | f110ca489c9b7cf3f6c9656e383e787f3aee217f (patch) | |
| tree | dbfe835e23cf94c5caad3160d403570932786d3f /Documentation/feature-removal-schedule.txt | |
| parent | 8ffd25454738fb9ed76ee18cc0f180fb0b360401 (diff) | |
| download | lwn-f110ca489c9b7cf3f6c9656e383e787f3aee217f.tar.gz lwn-f110ca489c9b7cf3f6c9656e383e787f3aee217f.zip | |
PCI Hotplug: schedule fakephp for feature removal
Now that the PCI core is capable of function-level remove and rescan
as well as bus-level rescan, there's no functional need to keep fakephp
anymore.
We keep it around for userspace compatibility reasons, schedule removal
in three years.
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'Documentation/feature-removal-schedule.txt')
| -rw-r--r-- | Documentation/feature-removal-schedule.txt | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 20d3b94703a4..8851eea06a02 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -335,6 +335,7 @@ Why: In 2.6.18 the Secmark concept was introduced to replace the "compat_net" Secmark, it is time to deprecate the older mechanism and start the process of removing the old code. Who: Paul Moore <paul.moore@hp.com> + --------------------------- What: sysfs ui for changing p4-clockmod parameters @@ -344,3 +345,35 @@ Why: See commits 129f8ae9b1b5be94517da76009ea956e89104ce8 and Removal is subject to fixing any remaining bugs in ACPI which may cause the thermal throttling not to happen at the right time. Who: Dave Jones <davej@redhat.com>, Matthew Garrett <mjg@redhat.com> + +--------------------------- + +What: fakephp and associated sysfs files in /sys/bus/pci/slots/ +When: 2011 +Why: In 2.6.27, the semantics of /sys/bus/pci/slots was redefined to + represent a machine's physical PCI slots. The change in semantics + had userspace implications, as the hotplug core no longer allowed + drivers to create multiple sysfs files per physical slot (required + for multi-function devices, e.g.). fakephp was seen as a developer's + tool only, and its interface changed. Too late, we learned that + there were some users of the fakephp interface. + + In 2.6.30, the original fakephp interface was restored. At the same + time, the PCI core gained the ability that fakephp provided, namely + function-level hot-remove and hot-add. + + Since the PCI core now provides the same functionality, exposed in: + + /sys/bus/pci/rescan + /sys/bus/pci/devices/.../remove + /sys/bus/pci/devices/.../rescan + + there is no functional reason to maintain fakephp as well. + + We will keep the existing module so that 'modprobe fakephp' will + present the old /sys/bus/pci/slots/... interface for compatibility, + but users are urged to migrate their applications to the API above. + + After a reasonable transition period, we will remove the legacy + fakephp interface. +Who: Alex Chiang <achiang@hp.com> |