diff options
| author | Tejun Heo <tj@kernel.org> | 2013-03-12 11:30:05 -0700 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-03-12 11:36:35 -0700 |
| commit | d73ce004225a7b2ed75f4340bb63721d55552265 (patch) | |
| tree | fa4b2ab4f064412018589307b988567a713b6d96 /drivers/base/core.c | |
| parent | 6dbe51c251a327e012439c4772097a13df43c5b8 (diff) | |
driver/base: implement subsys_virtual_register()
Kay tells me the most appropriate place to expose workqueues to
userland would be /sys/devices/virtual/workqueues/WQ_NAME which is
symlinked to /sys/bus/workqueue/devices/WQ_NAME and that we're lacking
a way to do that outside of driver core as virtual_device_parent()
isn't exported and there's no inteface to conveniently create a
virtual subsystem.
This patch implements subsys_virtual_register() by factoring out
subsys_register() from subsys_system_register() and using it with
virtual_device_parent() as the origin directory. It's identical to
subsys_system_register() other than the origin directory but we aren't
gonna restrict the device names which should be used under it.
This will be used to expose workqueue attributes to userland.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Diffstat (limited to 'drivers/base/core.c')
| -rw-r--r-- | drivers/base/core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index 56536f4b0f6b..f58084a86e8c 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -690,7 +690,7 @@ void device_initialize(struct device *dev) set_dev_node(dev, -1); } -static struct kobject *virtual_device_parent(struct device *dev) +struct kobject *virtual_device_parent(struct device *dev) { static struct kobject *virtual_dir = NULL; |