subsys_virtual_register
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## 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.

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