linux/Documentation/admin-guide/abi-testing.rst
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   1ABI testing symbols
   2===================
   3
   4Documents interfaces that are felt to be stable,
   5as the main development of this interface has been completed.
   6
   7The interface can be changed to add new features, but the
   8current interface will not break by doing this, unless grave
   9errors or security problems are found in them.
  10
  11Userspace programs can start to rely on these interfaces, but they must
  12be aware of changes that can occur before these interfaces move to
  13be marked stable.
  14
  15Programs that use these interfaces are strongly encouraged to add their
  16name to the description of these interfaces, so that the kernel
  17developers can easily notify them if any changes occur.
  18
  19.. kernel-abi:: $srctree/Documentation/ABI/testing
  20   :rst:
  21