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93dafa92e1
Kui-Feng Lee says: ==================== Allow users to attach a 64-bits cookie to a bpf_link of fentry, fexit, or fmod_ret. This patchset includes several major changes. - Define struct bpf_tramp_links to replace bpf_tramp_prog. struct bpf_tramp_links collects bpf_links of a trampoline - Generate a trampoline to call bpf_progs of given bpf_links. - Trampolines always set/reset bpf_run_ctx before/after calling/leaving a tracing program. - Attach a cookie to a bpf_link of fentry/fexit/fmod_ret/lsm. The value will be available when running the associated bpf_prog. Th major differences from v6: - bpf_link_create() can create links of BPF_LSM_MAC attach type. - Add a test for lsm. - Add function proto of bpf_get_attach_cookie() for lsm. - Check BPF_LSM_MAC in bpf_prog_has_trampoline(). - Adapt to the changes of LINK_CREATE made by Andrii. The major differences from v7: - Change stack_size instead of pushing/popping run_ctx. - Move cookie to bpf_tramp_link from bpf_tracing_link.. v1: https://lore.kernel.org/all/20220126214809.3868787-1-kuifeng@fb.com/ v2: https://lore.kernel.org/bpf/20220316004231.1103318-1-kuifeng@fb.com/ v3: https://lore.kernel.org/bpf/20220407192552.2343076-1-kuifeng@fb.com/ v4: https://lore.kernel.org/bpf/20220411173429.4139609-1-kuifeng@fb.com/ v5: https://lore.kernel.org/bpf/20220412165555.4146407-1-kuifeng@fb.com/ v6: https://lore.kernel.org/bpf/20220416042940.656344-1-kuifeng@fb.com/ v7: https://lore.kernel.org/bpf/20220508032117.2783209-1-kuifeng@fb.com/ ==================== Signed-off-by: Andrii Nakryiko <andrii@kernel.org> |
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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.