SYSFS_SCHEDULE_CALLB(9) The Filesystem for Exporting K SYSFS_SCHEDULE_CALLB(9)
NAME
sysfs_schedule_callback - helper to schedule a callback for a kobject
SYNOPSIS
int sysfs_schedule_callback(struct kobject * kobj, void (*func) (void *), void * data, struct module * owner);
ARGUMENTS
kobj
object we're acting for.
func
callback function to invoke later.
data
argument to pass to func.
owner
module owning the callback code
DESCRIPTION
sysfs attribute methods must not unregister themselves or their parent kobject (which would amount to the same thing). Attempts to do so
will deadlock, since unregistration is mutually exclusive with driver callbacks.
Instead methods can call this routine, which will attempt to allocate and schedule a workqueue request to call back func with data as its
argument in the workqueue's process context. kobj will be pinned until func returns.
Returns 0 if the request was submitted, -ENOMEM if storage could not be allocated, -ENODEV if a reference to owner isn't available, -EAGAIN
if a callback has already been scheduled for kobj.
COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 SYSFS_SCHEDULE_CALLB(9)
