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ebc0d8093e
We do this implementation in several steps to not have the CI failing: - first (this patch), we add struct_ops while keeping the existing infra available - then we change the selftests, the examples and the existing in-tree HID-BPF programs - then we remove the existing trace points making old HID-BPF obsolete There are a few advantages of struct_ops over tracing: - compatibility with sleepable programs (for hid_hw_raw_request() in a later patch) - a lot simpler in the kernel: it's a simple rcu protected list - we can add more parameters to the function called without much trouble - the "attach" is now generic through BPF-core: the caller just needs to set hid_id and flags before calling __load(). - all the BPF tough part is not handled in BPF-core through generic processing - hid_bpf_ctx is now only writable where it needs be Acked-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/r/20240608-hid_bpf_struct_ops-v3-3-6ac6ade58329@kernel.org Signed-off-by: Benjamin Tissoires <bentiss@kernel.org> |
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