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5 Commits

Author SHA1 Message Date
Yonghong Song
88031b929c docs/bpf: Fix an incorrect statement in verifier.rst 
In verifier.rst, I found an incorrect statement (maybe a typo) in section
'Liveness marks tracking'. Basically, the wrong register is attributed
to have a read mark. This may confuse the user.

Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20240111052136.3440417-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2024-01-23 14:40:23 -08:00
Eduard Zingerman
cb6018485c docs/bpf: Add description of register liveness tracking algorithm 
This is a followup for [1], adds an overview for the register liveness
tracking, covers the following points:
- why register liveness tracking is useful;
- how register parentage chains are constructed;
- how liveness marks are applied using the parentage chains.

[1] https://lore.kernel.org/bpf/CAADnVQKs2i1iuZ5SUGuJtxWVfGYR9kDgYKhq3rNV+kBLQCu7rA@mail.gmail.com/

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Reviewed-by: Edward Cree <ecree.xilinx@gmail.com>
Link: https://lore.kernel.org/r/20230202125713.821931-2-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2023-02-02 20:21:59 -08:00
Randy Dunlap
1d3cab43f4 Documentation: bpf: correct spelling 
Correct spelling problems for Documentation/bpf/ as reported
by codespell.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: bpf@vger.kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://lore.kernel.org/r/20230128195046.13327-1-rdunlap@infradead.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2023-01-28 12:22:20 -08:00
Wan Jiabing
43429ea74a bpf, docs: Add a missing colon in verifier.rst 
Add a missing colon to fix the document style.

Fixes: 88691e9e1ef5 ("bpf, docs: Split general purpose eBPF documentation out of filter.rst")
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220228080416.1689327-1-wanjiabing@vivo.com
 2022-02-28 18:20:35 +01:00
Christoph Hellwig
88691e9e1e bpf, docs: Split general purpose eBPF documentation out of filter.rst 
filter.rst starts out documenting the classic BPF and then spills into
introducing and documentating eBPF.  Move the eBPF documentation into
rwo new files under Documentation/bpf/ for the instruction set and
the verifier and link to the BPF documentation from filter.rst.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211119163215.971383-6-hch@lst.de
 2021-11-30 10:52:11 -08:00