introduce new type of eBPF programs BPF_PROG_TYPE_KPROBE_FILTER.
Such programs are allowed to call the same helper functions
as tracing filters, but bpf_context is different:
For tracing filters bpf_context is 6 arguments of tracepoints or syscalls
For kprobe filters bpf_context == pt_regs
introduce new type of eBPF programs BPF_PROG_TYPE_KPROBE_FILTER.
Such programs are allowed to call the same helper functions
as tracing filters, but bpf_context is different:
For tracing filters bpf_context is 6 arguments of tracepoints or syscalls
For kprobe filters bpf_context == pt_regs
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