libbpf: Add bpf_program__set_insns function
Adding bpf_program__set_insns that allows to set new instructions for a BPF program. This is a very advanced libbpf API and users need to know what they are doing. This should be used from prog_prepare_load_fn callback only. We can have changed instructions after calling prog_prepare_load_fn callback, reloading them. One of the users of this new API will be perf's internal BPF prologue generation. Signed-off-by:Jiri Olsa <jolsa@kernel.org> Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Acked-by:
Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20220510074659.2557731-2-jolsa@kernel.org
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