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40e784b4d4
Unify the definitions of atomic_sub_if_positive() & atomic64_sub_if_positive() using a macro like we do for most other atomic functions. This allows us to share the implementation ensuring consistency between the two. Notably this provides the appropriate loongson3_war barriers in the atomic64_sub_if_positive() case which were previously missing. The code is rearranged a little to handle the !kernel_uses_llsc case first in order to de-indent the LL/SC case & allow us not to go over 80 characters per line. Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: Huacai Chen <chenhc@lemote.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: linux-kernel@vger.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.