Documentation/ABI/testing/sysfs-devices

   1 What:           /sys/devices
   2 Date:           February 2006
   3 Contact:        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
   4 Description:
   5                 The /sys/devices tree contains a snapshot of the
   6                 internal state of the kernel device tree.  Devices will
   7                 be added and removed dynamically as the machine runs,
   8                 and between different kernel versions, the layout of the
   9                 devices within this tree will change.
  10
  11                 Please do not rely on the format of this tree because of
  12                 this.  If a program wishes to find different things in
  13                 the tree, please use the /sys/class structure and rely
  14                 on the symlinks there to point to the proper location
  15                 within the /sys/devices tree of the individual devices.
  16                 Or rely on the uevent messages to notify programs of
  17                 devices being added and removed from this tree to find
  18                 the location of those devices.
  19
  20                 Note that sometimes not all devices along the directory
  21                 chain will have emitted uevent messages, so userspace
  22                 programs must be able to handle such occurrences.
  23
  24 Users:
  25         udev <linux-hotplug-devel@lists.sourceforge.net>