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e50f06ce2d
Some atomics can be implemented in several different ways, e.g. FULL/ACQUIRE/RELEASE ordered atomics can be implemented in terms of RELAXED atomics, and ACQUIRE/RELEASE/RELAXED can be implemented in terms of FULL ordered atomics. Other atomics are optional, and don't exist in some configurations (e.g. not all architectures implement the 128-bit cmpxchg ops). Subsequent patches will require that architectures define a preprocessor symbol for any atomic (or ordering variant) which is optional. This will make the fallback ifdeffery more robust, and simplify future changes. Add the required definitions to arch/m68k. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230605070124.3741859-9-mark.rutland@arm.com |
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| README | ||
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.