centos man page for subsys_virtual_register

SUBSYS_VIRTUAL_REGIS(9) 				   Device drivers infrastructure				   SUBSYS_VIRTUAL_REGIS(9)

NAME
       subsys_virtual_register - register a subsystem at /sys/devices/virtual/

SYNOPSIS
       int subsys_virtual_register(struct bus_type * subsys, const struct attribute_group ** groups);

ARGUMENTS
       subsys
	   virtual subsystem

       groups
	   default attributes for the root device

DESCRIPTION
       All 'virtual' subsystems have a /sys/devices/system/<name> root device with the name of the subystem. The root device can carry
       subsystem-wide attributes. All registered devices are below this single root device. There's no restriction on device naming. This is for
       kernel software constructs which need sysfs interface.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   SUBSYS_VIRTUAL_REGIS(9)