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efe620e5ba
Replace our own homegrown assembly store/release and load/acquire implementations with the HW agnositic atomic APIs C11 offers. This to make the code more portable, easier to read, and reduce the maintenance burden. The original code used load-acquire and store-release barriers hand-coded in assembly. Since C11, these kind of operations are offered as built-ins in gcc and llvm. The load-acquire operation prevents hoisting of non-atomic memory operations to before this operation and it corresponds to the __ATOMIC_ACQUIRE operation in the built-in atomics. The store-release operation prevents hoisting of non-atomic memory operations to after this operation and it corresponds to the __ATOMIC_RELEASE operation in the built-in atomics. Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Link: https://lore.kernel.org/r/20230111093526.11682-8-magnus.karlsson@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.