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2007-05-02remove "struct subsystem" as it is no longer neededGreg Kroah-Hartman
We need to work on cleaning up the relationship between kobjects, ksets and ktypes. The removal of 'struct subsystem' is the first step of this, especially as it is not really needed at all. Thanks to Kay for fixing the bugs in this patch. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27kobject: Comment and warning fixes to kobject.cEric W. Biederman
This dots some i's and crosses some t's after left over from when kobject_kset_add_dir was built from kobject_add_dir. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27kobject core: remove rwsem from struct subsystemGreg Kroah-Hartman
It isn't used at all by the driver core anymore, and the few usages of it within the kernel have now all been fixed as most of them were using it incorrectly. So remove it. Now the whole struct subsys can be removed from the system, but that's for a later patch... Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27kobject: kobject_add() reference leakCornelia Huck
We leak a reference if we attempt to add a kobject with no name. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27Driver core: notify userspace of network device renamesJean Tourrilhes
Provide rename event for when we rename network devices. Signed-off-by: Jean Tourrilhes <jt@hpl.hp.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27kobject: kobject_shadow_add cleanupDmitriy Monakhov
- correct function name in comments - parrent assignment does metter only inside "if" block, so move it inside this block. Signed-off-by: Monakhov Dmitriy <dmonakhov@openvz.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27driver core: fix namespace issue with devices assigned to classesKay Sievers
- uses a kset in "struct class" to keep track of all directories belonging to this class - merges with the /sys/devices/virtual logic. - removes the namespace-dir if the last member of that class leaves the directory. There may be locking or refcounting fixes left, I stopped when it seemed to work with network and sound modules. :) From: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-03-09kobject: new_device->kref wasn't putted after error in kobject_move()Dmitriy Monakhov
If error happen we jump to "out" label, in this case new_device not yet became the parent but it wasn't putted. Signed-off-by: Monakhov Dmitriy <dmonakhov@openvz.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-19Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: PCI: Make PCI device numa-node attribute visible in sysfs PCI: add systems for automatic breadth-first device sorting PCI: PCI devices get assigned redundant IRQs PCI: Make CARDBUS_MEM_SIZE and CARDBUS_IO_SIZE boot options PCI: pci.txt fix __devexit() usage PCI/sysfs/kobject kernel-doc fixes
2007-02-16PCI/sysfs/kobject kernel-doc fixesRandy Dunlap
Fix kernel-doc warnings in PCI, sysfs, and kobject files. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-16kobject: kobj->k_name verification fixMartin Stoilov
The function 'kobject_add' tries to verify the name of a new kobject instance is properly set before continuing. if (!kobj->k_name) kobj->k_name = kobj->name; if (!kobj->k_name) { pr_debug("kobject attempted to be registered with no name!\n"); WARN_ON(1); return -EINVAL; } The statement: if (!kobj->k_name) { pr_debug("kobject attempted to be registered with no name!\n"); WARN_ON(1); return -EINVAL; } is useless the way it is right now, because it can never be true. I think the code was intended to be: if (!kobj->k_name) kobj->k_name = kobj->name; if (!*kobj->k_name) { pr_debug("kobject attempted to be registered with no name!\n"); WARN_ON(1); return -EINVAL; } because this would make sure the kobj->name buffer has something in it. So the missing '*' is just a typo. Although, I would much prefer expression like: if (*kobj->k_name == '\0') { pr_debug("kobject attempted to be registered with no name!\n"); WARN_ON(1); return -EINVAL; } because this would've made the intention clear, in this patch I just restore the missing '*' without changing the coding style of the function. Signed-off-by: Martin Stoilov <mstoilov@odesys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-11[PATCH] Numerous fixes to kernel-doc info in source files.Robert P. J. Day
A variety of (mostly) innocuous fixes to the embedded kernel-doc content in source files, including: * make multi-line initial descriptions single line * denote some function names, constants and structs as such * change erroneous opening '/*' to '/**' in a few places * reword some text for clarity Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-07sysfs: Shadow directory supportEric W. Biederman
The problem. When implementing a network namespace I need to be able to have multiple network devices with the same name. Currently this is a problem for /sys/class/net/*. What I want is a separate /sys/class/net directory in sysfs for each network namespace, and I want to name each of them /sys/class/net. I looked and the VFS actually allows that. All that is needed is for /sys/class/net to implement a follow link method to redirect lookups to the real directory you want. Implementing a follow link method that is sensitive to the current network namespace turns out to be 3 lines of code so it looks like a clean approach. Modifying sysfs so it doesn't get in my was is a bit trickier. I am calling the concept of multiple directories all at the same path in the filesystem shadow directories. With the directory entry really at that location the shadow master. The following patch modifies sysfs so it can handle a directory structure slightly different from the kobject tree so I can implement the shadow directories for handling /sys/class/net/. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07kobject: kobject_put cleanupMariusz Kozlowski
This patch removes redundant argument checks for kobject_put(). Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07driver core: Allow device_move(dev, NULL).Cornelia Huck
If we allow NULL as the new parent in device_move(), we need to make sure that the device is placed into the same place as it would if it was newly registered: - Consider the device virtual tree. In order to be able to reuse code, setup_parent() has been tweaked a bit. - kobject_move() can fall back to the kset's kobject. - sysfs_move_dir() uses the sysfs root dir as fallback. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07Kobject: make kobject apis more robust in handling NULL pointersGreg Kroah-Hartman
It should be ok to pass in NULL for some kobject functions, so add error checking for all exported kobject functions to be more robust. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-07[PATCH] kernel core: replace kmalloc+memset with kzallocBurman Yan
Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-01driver core: Introduce device_move(): move a device to a new parent.Cornelia Huck
Provide a function device_move() to move a device to a new parent device. Add auxilliary functions kobject_move() and sysfs_move_dir(). kobject_move() generates a new uevent of type KOBJ_MOVE, containing the previous path (DEVPATH_OLD) in addition to the usual values. For this, a new interface kobject_uevent_env() is created that allows to add further environmental data to the uevent at the kobject layer. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-10-11Input: add missing exports to fix modular buildDmitry Torokhov
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-09-25kobject: must_check fixesRandy Dunlap
Check all __must_check warnings in lib/kobject.c Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-21[PATCH] kobject: make people pay attention to kobject_add errorsGreg Kroah-Hartman
These really need to be fixed, shout it out to the world. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-05-21[PATCH] kobject: quiet errors in kobject_addGreg Kroah-Hartman
People don't like released kernels yelling at them, no matter how real the error might be. So only report it if CONFIG_KOBJECT_DEBUG is enabled. Sent on request of Andrew Morton. (akpm: should bring this back post-2.6.17) Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-27[PATCH] Kobject: possible cleanupsAdrian Bunk
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 <bunk@stusta.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-04-14[PATCH] sysfs: Allow sysfs attribute files to be pollableNeilBrown
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 <neilb@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] kobject_add_dirJun'ichi Nomura
Adding kobject_add_dir() function which creates a subdirectory for a given kobject. Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] Kobject: provide better warning messages when people do stupid thingsGreg Kroah-Hartman
Now that kobject_add() is used more than kobject_register() the kernel wasn't always letting people know that they were doing something wrong. This change fixes this. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-02-06[PATCH] kobject: don't oops on null kobject.nameChuck Ebbert
kobject_get_path() will oops if one of the component names is NULL. Fix that by returning NULL instead of oopsing. Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-02-06[PATCH] kobject_add() must have a valid name in order to succeed.Greg Kroah-Hartman
So we might as well check to verify this, and let the user know that something is wrong if they didn't do it correctly, instead of oopsing later on in kobject_get_name() or somewhere else. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-04[PATCH] driver core: replace "hotplug" by "uevent"Kay Sievers
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 <kay.sievers@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-30[PATCH] fix missing includesTim Schmielau
I recently picked up my older work to remove unnecessary #includes of sched.h, starting from a patch by Dave Jones to not include sched.h from module.h. This reduces the number of indirect includes of sched.h by ~300. Another ~400 pointless direct includes can be removed after this disentangling (patch to follow later). However, quite a few indirect includes need to be fixed up for this. In order to feed the patches through -mm with as little disturbance as possible, I've split out the fixes I accumulated up to now (complete for i386 and x86_64, more archs to follow later) and post them before the real patch. This way this large part of the patch is kept simple with only adding #includes, and all hunks are independent of each other. So if any hunk rejects or gets in the way of other patches, just drop it. My scripts will pick it up again in the next round. Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28[PATCH] gfp_t: lib/*Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-20[PATCH] Make kobject's name be const char *Dmitry Torokhov
kobject: make kobject's name const char * since users should not attempt to change it (except by calling kobject_rename). Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-01[PATCH] DocBook: fix some descriptionsMartin Waitz
Some KernelDoc descriptions are updated to match the current code. No code changes. Signed-off-by: Martin Waitz <tali@admingilde.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-18[PATCH] kobject/hotplug split - kobject add/removekay.sievers@vrfy.org
kobject_add() and kobject_del() don't emit hotplug events anymore. The user should do it itself if it has finished populating the device directory. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-03-08[PATCH] kset: make ksets have a spinlock, and use that to lock their listsGreg Kroah-Hartman
Do this instead of using the rwsem of a subsys. Smaller, faster, and I'm trying to get rid of the rwsem in the subsys. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-03-08[PATCH] Kobject: remove some unneeded exportsArjan van de Ven
kobject_get_path and kobject_rename are only used by the sysfs core code and not aren't really driver-ish code. Remove the unused exports Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-11-18[PATCH] fix kobject varargs bugAndrew Morton
From: Gerd Knorr <kraxel@bytesex.org> It uses the varargs list twice in a illegal way. That doesn't harm on i386 by pure luck, but blows things up on amd64 machines. Using var args list twice without calling va_start twice is illegal. Signed-off-by: Gerd Knorr <kraxel@bytesex.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-11-08[PATCH] kobject: fix double kobject_put() in error path of kobject_add()Greg Kroah-Hartman
This fixes a problem introduced in the previous set of driver model changes that has been seen by a lot of people (most notibly the greater than 256 pty users, but others might also be hitting this without realizing it.) Also add a comment so we don't try to "fix" this again. Signed-off-by: Greg Kroah-Hartman <greg@kroah.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2004-11-03[PATCH] driver-model: kobject_add() error path reference counting fixTejun Heo
df_04_kobject_add_ref_fix.patch In kobject_add(), @kobj wasn't put'd properly on error path. This patch fixes it. Signed-off-by: Tejun Heo <tj@home-tj.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-10-20kobject: add CONFIG_DEBUG_KOBJECTGreg Kroah-Hartman
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-09-14kevent: standardize on the event typesGreg Kroah-Hartman
This prevents any potential typos from happening. Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-09-10Kobject Userspace Event NotificationGreg Kroah-Hartman
Implemetation of userspace events through a netlink socket. The kernel events layer provides the functionality to raise an event from a given kobject represented by its sysfs-path and a signal string to describe the type of event. Currently, kobject additions and removals are signalized to userspace by forking the /sbin/hotplug helper. This patch moves this special case of userspace-event out of the kobject core to the new kobject_uevent implementation. This makes it possible to send all hotplug messages also through the new netlink transport. Possible new users of the kernel userspace functionality are filesystem mount events (block device claim/release) or simple device state transitions (cpu overheating). To send an event, the user needs to pass the kobject, a optional sysfs-attribute and the signal string to the following function: kobject_uevent(const char *signal, struct kobject *kobj, struct attribute *attr) Example: kobject_uevent("overheating", &cpu->kobj, NULL); The message itself is sent over multicast netlink socket, which makes it possible for userspace to listen with multiple applications for the same messages. Signed-off-by: Robert Love <rml@novell.com> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-09-08[PATCH] ksyms: don't implement /sys/kernel/hotplug_seqnum if CONFIG_HOTPLUG ↵Greg Kroah-Hartman
is not enabled. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-09-08[PATCH] kobject: hotplug_seqnum is not 64 bits on all platforms, so fix it.Greg Kroah-Hartman
Thanks to Kay Sievers for pointing this out. Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-09-05kobject: fix build error if CONFIG_HOTPLUG is not enabled.Greg Kroah-Hartman
Thanks to Kay Sievers for pointing this out. Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-09-04kobject: adjust hotplug_seqnum increment to keep userspace and kernel agreeing.Greg Kroah-Hartman
2004-09-04[PATCH] export of SEQNUM to userspace (creates /sys/kernel)Kay Sievers
o /sys/kernel/hotplug_seqnum exports the current number o lib/kobject.c's sequence_num is renamed to hotplug_seqnum and exported by include/linux/kobject.h o the source file ksysfs.c in kernel/ creates on init the sybsystem "/sys/kernel/" in sysfs Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-08-24kobject: convert struct kobject use kref.Greg Kroah-Hartman
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-08-24[PATCH] kobject: fix kobject_set_name comment.Dmitry Torokhov
Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-08-06[PATCH] KOBJECT: add kobject_get_pathRobert Love
Add a new kobject helper, kobject_get_path(), which is the greatest function ever. Signed-Off-By: Robert Love <rml@ximian.com> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
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