linux-stable.git/include/linux/kobject.h, branch linux-2.6.17.y

[PATCH] Kobject: possible cleanups

2006-04-27T20:08:56+00:00

This patch contains the following possible cleanups:
- #if 0 the following unused global function:
  - subsys_remove_file()
- remove the following unused EXPORT_SYMBOL's:
  - kset_find_obj
  - subsystem_init
- remove the following unused EXPORT_SYMBOL_GPL:
  - kobject_add_dir

Signed-off-by: Adrian Bunk 
Signed-off-by: Greg Kroah-Hartman

[PATCH] Kobject: fix build error

2006-04-27T20:08:56+00:00

This fixes a build error for various odd combinations of CONFIG_HOTPLUG
and CONFIG_NET.

Signed-off-by: Kay Sievers 
Cc: Nigel Cunningham 
Cc: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

[PATCH] sysfs: Allow sysfs attribute files to be pollable

2006-04-14T18:41:24+00:00

It works like this:
  Open the file
  Read all the contents.
  Call poll requesting POLLERR or POLLPRI (so select/exceptfds works)
  When poll returns,
     close the file and go to top of loop.
   or lseek to start of file and go back to the 'read'.

Events are signaled by an object manager calling
   sysfs_notify(kobj, dir, attr);

If the dir is non-NULL, it is used to find a subdirectory which
contains the attribute (presumably created by sysfs_create_group).

This has a cost of one int  per attribute, one wait_queuehead per kobject,
one int per open file.

The name "sysfs_notify" may be confused with the inotify
functionality.  Maybe it would be nice to support inotify for sysfs
attributes as well?

This patch also uses sysfs_notify to allow /sys/block/md*/md/sync_action
to be pollable

Signed-off-by: Neil Brown 
Signed-off-by: Greg Kroah-Hartman

[PATCH] kobject_add_dir

2006-03-20T21:42:59+00:00

Adding kobject_add_dir() function which creates a subdirectory
for a given kobject.

Signed-off-by: Jun'ichi Nomura 
Signed-off-by: Greg Kroah-Hartman

[PATCH] Kobject: kobject.h: fix a typo

2006-03-20T21:42:59+00:00

It shouldn't cause real harm, but it hurts my eyes.

Signed-off-by: Adrian Bunk 
Signed-off-by: Greg Kroah-Hartman

Revert mount/umount uevent removal

2006-02-22T17:39:02+00:00

This change reverts the 033b96fd30db52a710d97b06f87d16fc59fee0f1 commit
from Kay Sievers that removed the mount/umount uevents from the kernel.
Some older versions of HAL still depend on these events to detect when a
new device has been mounted.  These events are not correctly emitted,
and are broken by design, and so, should not be relied upon by any
future program.  Instead, the /proc/mounts file should be polled to
properly detect this kind of event.

A feature-removal-schedule.txt entry has been added, noting when this
interface will be removed from the kernel.

Signed-off-by: Greg Kroah-Hartman

[PATCH] kobject_uevent CONFIG_NET=n fix

2006-01-05T00:18:08+00:00

lib/lib.a(kobject_uevent.o)(.text+0x25f): In function `kobject_uevent':
: undefined reference to `__alloc_skb'
lib/lib.a(kobject_uevent.o)(.text+0x2a1): In function `kobject_uevent':
: undefined reference to `skb_over_panic'
lib/lib.a(kobject_uevent.o)(.text+0x31d): In function `kobject_uevent':
: undefined reference to `skb_over_panic'
lib/lib.a(kobject_uevent.o)(.text+0x356): In function `kobject_uevent':
: undefined reference to `netlink_broadcast'
lib/lib.a(kobject_uevent.o)(.init.text+0x9): In function `kobject_uevent_init':
: undefined reference to `netlink_kernel_create'
make: *** [.tmp_vmlinux1] Error 1

Netlink is unconditionally enabled if CONFIG_NET, so that's OK.

kobject_uevent.o is compiled even if !CONFIG_HOTPLUG, which is lazy.

Let's compound the sin.

Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

[PATCH] driver core: replace "hotplug" by "uevent"

2006-01-05T00:18:08+00:00

Leave the overloaded "hotplug" word to susbsystems which are handling
real devices. The driver core does not "plug" anything, it just exports
the state to userspace and generates events.

Signed-off-by: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman

[PATCH] merge kobject_uevent and kobject_hotplug

2006-01-05T00:18:07+00:00

The distinction between hotplug and uevent does not make sense these
days, netlink events are the default.

udev depends entirely on netlink uevents. Only during early boot and
in initramfs, /sbin/hotplug is needed. So merge the two functions and
provide only one interface without all the options.

The netlink layer got a nice generic interface with named slots
recently, which is probably a better facility to plug events for
subsystem specific events.
Also the new poll() interface to /proc/mounts is a nicer way to
notify about changes than sending events through the core.
The uevents should only be used for driver core related requests to
userspace now.

Signed-off-by: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman

[PATCH] remove mount/umount uevents from superblock handling

2006-01-05T00:18:07+00:00

The names of these events have been confusing from the beginning
on, as they have been more like claim/release events. We needed these
events for noticing HAL if storage devices have been mounted.

Thanks to Al, we have the proper solution now and can poll()
/proc/mounts instead to get notfied about mount tree changes.

Signed-off-by: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman