Some functions from refcount_t API provide different
memory ordering guarantees that their atomic counterparts.
This adds a document outlining these differences (
Documentation/core-api/refcount-vs-atomic.rst) as well as
some other minor improvements.
Signed-off-by: NElena Reshetova <elena.reshetova@intel.com>
Signed-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

...because there are none there, and I cannot figure out what would ever
have been of interest there.  This eliminates this warning:

    ./kernel/sys.c:1: warning: no structured comments found

from the build.
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

The docs build complains:

    ./include/linux/init.h:1: warning: no structured comments found

The problem is that the comments in question were moved to module.h in
commit 0fd972a7 (module: relocate module_init from init.h to
module.h).  Fix basics.rst to match.
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

That file went away with commit bd8cc5a0 (srcu: Remove Classic SRCU)
during the 4.13 merge window, leading to errors like:

  Error: Cannot open file ./kernel/rcu/srcu.c

during the docs build.
Reported-by: NLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

The structs there at device table are used by other documentation
at the Kernel. So, add it to the driver API.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

We don't need to keep it as a single large file anymore; split it up so
that it is easier to manage and the individual sections can be read
directly as plain files.
Signed-off-by: NJonathan Corbet <corbet@lwn.net>