__bpf_tramp_enter
emit_call((const u64)__bpf_tramp_enter, ctx);
ret = emit_call(ctx, (const u64)__bpf_tramp_enter);
(unsigned long)__bpf_tramp_enter);
ret = emit_call((const u64)__bpf_tramp_enter, true, ctx);
EMIT6_PCREL_RILB_PTR(0xc0050000, REG_14, __bpf_tramp_enter);
if (emit_rsb_call(&prog, __bpf_tramp_enter,
void notrace __bpf_tramp_enter(struct bpf_tramp_image *tr);