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Alexei Starovoitov says: ==================== bpf: volatile compare From: Alexei Starovoitov <ast@kernel.org> v2->v3: Debugged profiler.c regression. It was caused by basic block layout. Introduce bpf_cmp_likely() and bpf_cmp_unlikely() macros. Debugged redundant <<=32, >>=32 with u32 variables. Added cast workaround. v1->v2: Fixed issues pointed out by Daniel, added more tests, attempted to convert profiler.c, but barrier_var() wins vs bpf_cmp(). To be investigated. Patches 1-4 are good to go, but 5 needs more work. ==================== Link: https://lore.kernel.org/r/20231226191148.48536-1-alexei.starovoitov@gmail.com Signed-off-by: Andrii Nakryiko <andrii@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.