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* kobject: update the copyrightsGreg Kroah-Hartman2007-10-12
| | | | | | | | I've been hacking on these files for a while now, might as well make it official... Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* driver core: remove subsystem_init()Greg Kroah-Hartman2007-10-12
| | | | | | | There is only one user of it, and it is only a wrapper for kset_init(). Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* sysfs: move sysfs file poll implementation to sysfs_open_direntTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | Sysfs file poll implementation is scattered over sysfs and kobject. Event numbering is done in sysfs_dirent but wait itself is done on kobject. This not only unecessarily bloats both kobject and sysfs_dirent but is also buggy - if a sysfs_dirent is removed while there still are pollers, the associaton betwen the kobject and sysfs_dirent breaks and kobject may be freed with the pollers still sleeping on it. This patch moves whole poll implementation into sysfs_open_dirent. Each time a sysfs_open_dirent is created, event number restarts from 1 and pollers sleep on sysfs_open_dirent. As event sequence number is meaningless without any open file and pollers should have open file and thus sysfs_open_dirent, this ephemeral event counting works and is a saner implementation. This patch fixes the dnagling sleepers bug and reduces the sizes of kobject and sysfs_dirent by one pointer. Signed-off-by: Tejun Heo <htejun@gmail.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* sysfs: Remove first pass at shadow directory supportEric W. Biederman2007-10-12
| | | | | | | | | | | | | | | | | | | While shadow directories appear to be a good idea, the current scheme of controlling their creation and destruction outside of sysfs appears to be a locking and maintenance nightmare in the face of sysfs directories dynamically coming and going. Which can now occur for directories containing network devices when CONFIG_SYSFS_DEPRECATED is not set. This patch removes everything from the initial shadow directory support that allowed the shadow directory creation to be controlled at a higher level. So except for a few bits of sysfs_rename_dir everything from commit b592fcfe7f06c15ec11774b5be7ce0de3aa86e73 is now gone. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* kobject: remove the static array for the nameGreg Kroah-Hartman2007-10-12
| | | | | | | | | | | | | | | | Due to historical reasons, struct kobject contained a static array for the name, and a dynamic pointer in case the name got bigger than the array. That's just dumb, as people didn't always know which variable to reference, even with the accessor for the kobject name. This patch removes the static array, potentially saving a lot of memory as the majority of kobjects do not have a very long name. Thanks to Kay for the idea to do this. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Driver core: remove subsys_get()Greg Kroah-Hartman2007-10-12
| | | | | | | | There are no more subsystems, it's a kset now so remove the function and the only two users, which are in the driver core. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Driver core: remove subsys_put()Greg Kroah-Hartman2007-10-12
| | | | | | | | There are no more subsystems, it's a kset now so remove the function and the only two users, which are in the driver core. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* sysfs: make kobj point to sysfs_dirent instead of dentryTejun Heo2007-07-11
| | | | | | | | | | | | As kobj sysfs dentries and inodes are gonna be made reclaimable, dentry can't be used as naming token for sysfs file/directory, replace kobj->dentry with kobj->sd. The only external interface change is shadow directory handling. All other changes are contained in kobj and sysfs. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Driver core: add missing kset ueventKay Sievers2007-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We get uevents for a bus/class going away, but not one registering. Add the missing uevent in kset_register(), which will send an event for a new bus/class. Suppress all unwanted uevents for bus subdirectories like /bus/*/devices/, /bus/*/drivers/. Now we get for module usbcore: add /module/usbcore (module) add /bus/usb (bus) add /class/usb_host (class) add /bus/usb/drivers/hub (drivers) add /bus/usb/drivers/usb (drivers) remove /bus/usb/drivers/usb (drivers) remove /bus/usb/drivers/hub (drivers) remove /class/usb_host (class) remove /bus/usb (bus) remove /module/usbcore (module) instead of: add /module/usbcore (module) add /bus/usb/drivers/hub (drivers) add /bus/usb/drivers/usb (drivers) remove /bus/usb/drivers/usb (drivers) remove /bus/usb/drivers/hub (drivers) remove /class/usb_host (class) remove /bus/usb/drivers (bus) remove /bus/usb/devices (bus) remove /bus/usb (bus) remove /module/usbcore (module) Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* kobject: use the proper printk level for kobject errorGreg Kroah-Hartman2007-06-08
| | | | | | | | Thanks to Jean Delvare <khali@linux-fr.org> for pointing it out to me. Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* remove "struct subsystem" as it is no longer neededGreg Kroah-Hartman2007-05-02
| | | | | | | | | | | 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>
* kobject: Comment and warning fixes to kobject.cEric W. Biederman2007-04-27
| | | | | | | | | 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>
* kobject core: remove rwsem from struct subsystemGreg Kroah-Hartman2007-04-27
| | | | | | | | | | | | | 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>
* kobject: kobject_add() reference leakCornelia Huck2007-04-27
| | | | | | | | 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>
* Driver core: notify userspace of network device renamesJean Tourrilhes2007-04-27
| | | | | | | | | | 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>
* kobject: kobject_shadow_add cleanupDmitriy Monakhov2007-04-27
| | | | | | | | | | - 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>
* driver core: fix namespace issue with devices assigned to classesKay Sievers2007-04-27
| | | | | | | | | | | | | | | - 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>
* kobject: new_device->kref wasn't putted after error in kobject_move()Dmitriy Monakhov2007-03-09
| | | | | | | | | 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>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6Linus Torvalds2007-02-19
|\ | | | | | | | | | | | | | | | | | | * 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
| * PCI/sysfs/kobject kernel-doc fixesRandy Dunlap2007-02-16
| | | | | | | | | | | | | | | | 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>
* | kobject: kobj->k_name verification fixMartin Stoilov2007-02-16
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* [PATCH] Numerous fixes to kernel-doc info in source files.Robert P. J. Day2007-02-11
| | | | | | | | | | | | | | | 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>
* sysfs: Shadow directory supportEric W. Biederman2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* kobject: kobject_put cleanupMariusz Kozlowski2007-02-07
| | | | | | | | 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>
* driver core: Allow device_move(dev, NULL).Cornelia Huck2007-02-07
| | | | | | | | | | | | | | | | 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>
* Kobject: make kobject apis more robust in handling NULL pointersGreg Kroah-Hartman2007-02-07
| | | | | | | | | 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>
* [PATCH] kernel core: replace kmalloc+memset with kzallocBurman Yan2006-12-07
| | | | | Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* driver core: Introduce device_move(): move a device to a new parent.Cornelia Huck2006-12-01
| | | | | | | | | | | | | | | 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>
* Input: add missing exports to fix modular buildDmitry Torokhov2006-10-11
| | | | Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* kobject: must_check fixesRandy Dunlap2006-09-26
| | | | | | | | 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>
* [PATCH] kobject: make people pay attention to kobject_add errorsGreg Kroah-Hartman2006-06-21
| | | | | | These really need to be fixed, shout it out to the world. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] kobject: quiet errors in kobject_addGreg Kroah-Hartman2006-05-21
| | | | | | | | | | | | | 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>
* [PATCH] Kobject: possible cleanupsAdrian Bunk2006-04-27
| | | | | | | | | | | | | | 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>
* [PATCH] sysfs: Allow sysfs attribute files to be pollableNeilBrown2006-04-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* [PATCH] kobject_add_dirJun'ichi Nomura2006-03-20
| | | | | | | | 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>
* [PATCH] Kobject: provide better warning messages when people do stupid thingsGreg Kroah-Hartman2006-03-20
| | | | | | | | 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>
* [PATCH] kobject: don't oops on null kobject.nameChuck Ebbert2006-02-06
| | | | | | | | 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>
* [PATCH] kobject_add() must have a valid name in order to succeed.Greg Kroah-Hartman2006-02-06
| | | | | | | | 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>
* [PATCH] driver core: replace "hotplug" by "uevent"Kay Sievers2006-01-04
| | | | | | | | | 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>
* [PATCH] fix missing includesTim Schmielau2005-10-30
| | | | | | | | | | | | | | | | | | | | | 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>
* [PATCH] gfp_t: lib/*Al Viro2005-10-28
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Make kobject's name be const char *Dmitry Torokhov2005-06-20
| | | | | | | | 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>
* [PATCH] DocBook: fix some descriptionsMartin Waitz2005-05-01
| | | | | | | | | 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>
* [PATCH] kobject/hotplug split - kobject add/removekay.sievers@vrfy.org2005-04-19
| | | | | | | | | | | 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>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-16
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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