- 12 Oct, 2007 40 commits
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Eric W. Biederman authored
This patch rewrites sysfs_rename_dir to perform it's checks as much as possible on the underlying sysfs_dirents instead of the contents of the dcache. It turns out that this version is a little simpler, and a little more like the rest of the sysfs directory modification code. tj: fixed double locking of sysfs_mutex Signed-off-by:
Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
Tejun Heo <htejun@gmail.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Eric W. Biederman authored
The only uses of s_dentry left are the code that maintains s_dentry and trivial users that don't actually need it. So this patch removes the s_dentry maintenance code and restructures the trivial uses to use something else. Signed-off-by:
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Tejun Heo authored
Now that we know the sysfs tree structure cannot change under us and sysfs shadow support is dropped, sysfs_get_dentry() can be simplified greatly. It can just look up from the root and there's no need to retry on failure. Signed-off-by:
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Eric W. Biederman authored
Looking carefully at the rename code we have a subtle dependency that the structure of sysfs not change while we are performing a rename. If the parent directory of the object we are renaming changes while the rename is being performed nasty things could happen when we go to release our locks. So introduce a sysfs_rename_mutex to prevent this highly unlikely theoretical issue. In addition hold sysfs_rename_mutex over all calls to sysfs_get_dentry. Allowing sysfs_get_dentry to be simplified in the future. Signed-off-by:
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Eric W. Biederman authored
Currently we find the dentry to drop by looking at sd->s_dentry. We can just as easily accomplish the same task by looking up the sysfs inode and finding all of the dentries from there, with the added bonus that we don't need to play with the sysfs_assoc_lock. Signed-off-by:
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Eric W. Biederman authored
At some point someone wrote sysfs_readdir to insert a cursor into the list of sysfs_dirents to ensure that sysfs_readdir would restart properly. That works but it is complex code and tends to be expensive. The same effect can be achieved by keeping the sysfs_dirents in inode order and using the inode number as the f_pos. Then when we restart we just have to find the first dirent whose inode number is equal or greater then the last sysfs_dirent we attempted to return. Removing the sysfs directory cursor also allows the remove of all of the mysterious checks for sysfs_type(sd) != 0. Which were nonbovious checks to see if a cursor was in a directory list. tj: offset marker for EOF is changed from UINT_MAX to INT_MAX to avoid overflow in case offset is 32bit. Signed-off-by: -
Eric W. Biederman authored
This is a small cleanup patch that makes the code just a little bit cleaner. Signed-off-by:
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Eric W. Biederman authored
This patch modifies the users of sysfs_mount to use sysfs_root instead (which is what they are looking for). It then makes sysfs_mount static to keep people from using it by accident. The net result is slightly faster and cleaner code. Signed-off-by:
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Eric W. Biederman authored
Since sysfs no longer stores fs directory information in the dcache on a permanent basis kill_litter_super it is inappropriate and actively wrong. It will decrement the count on all dentries left in the dcache before trying to free them. At the moment this is not biting us only because we never unmount sysfs. Signed-off-by:
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Eric W. Biederman authored
Now that sysfs_get_inode is dropping the inode lock we no longer have a need from sysfs_instantiate. Signed-off-by:
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Eric W. Biederman authored
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Tejun Heo authored
lookup_one_len_kern() should be called with the parent's i_mutex locked. Fix it. Spotted by Eric W. Biederman. Signed-off-by:
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Jean Delvare authored
While platform_device.id is a u32, platform_device_add() handles "-1" as a special id value. This has potential for confusion and bugs. Making it an int instead should prevent problems from happening in the future. Signed-off-by:
Jean Delvare <khali@linux-fr.org> Signed-off-by:
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Akinobu Mita authored
No one uses sysdev_drivers. Because no one calls sysdev_driver_register with NULL class. And it is difficult to imagine that someone want to implement a global sysdev driver which is called with all sys_device on any kind of sysdev_class. So this patch removes global sysdev_drivers list and update comments for this change. Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Cc: Tejun Heo <htejun@gmail.com> Acked-by:
Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by:
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Rolf Eike Beer authored
Signed-off-by:
Rolf Eike Beer <eike-kernel@sf-tec.de> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Adrian Bunk authored
suspend_device() and resume_device() can now become static. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Markus Rechberger authored
following patch fixes the i2c name collision with i2c-dev. http://mcentral.de/wiki/index.php/Bugtracker#i2c_core_problem This issue has been experienced with em28xx and saa7133 based devices. I discussed that problem with Jean Delvare a while ago and he proposed to add a prefix to the class name. Signed-off-by:
Markus Rechberger <markus.rechberger@amd.com> Acked-by:
Marcel Holtmann <marcel@holtmann.org> Signed-off-by:
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Kay Sievers authored
Signed-off-by:
Kay Sievers <kay.sievers@vrfy.org> Signed-off-by:
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Kay Sievers authored
This has been in the SuSE kernels for some time now. Signed-off-by:
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Kay Sievers authored
Move uevent specific logic from the core into kobject_uevent.c, which does no longer require to link the unused string array if hotplug is not compiled in. Signed-off-by:
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tonyj@suse.de authored
Convert from class_device to device in drivers/char. Signed-off-by:
Tony Jones <tonyj@suse.de> Signed-off-by:
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tonyj@suse.de authored
Convert from class_device to device for drivers/video. Signed-off-by:
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Jean Delvare authored
The DEFINE_DMI_ATTR macro has a single user left so we can expand it for slightly shorter/simpler code. Signed-off-by:
Lennart Poettering <mzxreary@0pointer.de> Signed-off-by:
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Jean Delvare authored
We can use sysfs attributes with an extra parameter for dmi id attributes. This makes it possible to use the same callback function for all attributes, reducing the binary size significantly (-18% on x86_64.) Signed-off-by:
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Tejun Heo authored
With the previous sysfs_add_one() update, there is only one user of the return value of sysfs_addrm_finish() and the user can switch to testing @sd easily. Make sysfs_addrm_finish() return void for cleaner semantics as suggested by Satyam Sharma. This patch doesn't introduce any noticeable behavior change. Signed-off-by:
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Tejun Heo authored
Make sysfs_add_one() check for duplicate entry and return -EEXIST if such entry exists. This simplifies node addition code a bit. This patch doesn't introduce any noticeable behavior change. Signed-off-by:
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Tejun Heo authored
When adding or removing a sysfs_dirent, the user used to be required to call link/unlink separately. It was for two reasons - code looked like that before sysfs_addrm_cxt conversion and to avoid looping through parent_sd->children list twice during removal. Performance optimization during removal just isn't worth it. Make sysfs_add/remove_one() call sysfs_link/unlink_sibing() implicitly. This makes code simpler albeit slightly less efficient. This change doesn't introduce any noticeable behavior change. Signed-off-by:
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Tejun Heo authored
With the shadow directories gone, sysfs_rename_dir() can be simplified. * parent doesn't need to be grabbed separately. Just access old_dentry->d_parent. * parent sd can never change. Remove code to move under the new parent. * Massage comments a bit. Signed-off-by:
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Tejun Heo authored
* remove space between * and symbol name in variable declaration. * kill unnecessary new line. * kill 'found' and test 'sd' instead. Signed-off-by:
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Eric W. Biederman authored
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 b592fcfe is now gone. Signed-off-by:
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Dave Young authored
Cleanup semaphore.h Signed-off-by:
Dave Young <hidave.darkstar@gmail.com> Signed-off-by:
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Dave Young authored
Use mutex instead of semaphore in sysfs/file.c : sys_buffer. Signed-off-by:
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Robin Getz authored
Allows debugfs helper functions to have a hex output, rather than just decimal Signed-off-by:
Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by:
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Cornelia Huck authored
Signed-off-by:
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Greg Kroah-Hartman authored
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 authored
A kset should not have its name set directly, so dynamically set the name at runtime. This is needed to remove the static array in the kobject structure which will be changed in a future patch. Signed-off-by: -
Greg Kroah-Hartman authored
struct cdev does not need the kobject name to be set, as it is never used. This patch fixes up the few places it is set. Signed-off-by:
Mauro Carvalho Chehab <mchehab@infradead.org>
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Greg Kroah-Hartman authored
A number of different drivers incorrect access the kobject name field directly. This is not correct as the name might not be in the array. Use the proper accessor function instead.
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Greg Kroah-Hartman authored
get_bus() should not be globally visable as it is not used by anything other than drivers/base/bus.c. This patch removes the visability of it, and renames it to match all of the other *_get() functions in the kernel. Signed-off-by: -
Greg Kroah-Hartman authored
put_bus() should not be globally visable as it is not used by anything other than drivers/base/bus.c. This patch removes the visability of it, and renames it to match all of the other *_put() functions in the kernel. Signed-off-by:
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