kprobe_lookup_name
kprobe_opcode_t *kprobe_lookup_name(const char *name, unsigned int offset);
addr = (unsigned long)kprobe_lookup_name(symname, 0);
addr = kprobe_lookup_name(symbol_name, offset);
kprobe_lookup_name(kretprobe_blacklist[i].name, 0);
addr = (unsigned long)kprobe_lookup_name(symname, 0);