bpf: allow bpf_get_prandom_u32() to be used in tracing
bpf_get_prandom_u32() was initially introduced for socket filters and later requested numberous times to be added to tracing bpf programs for the same reason as in socket filters: to be able to randomly select incoming events. Signed-off-by: NAlexei Starovoitov <ast@kernel.org> Acked-by: NDaniel Borkmann <daniel@iogearbox.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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