ppc_kallsyms_lookup_name 247 arch/powerpc/kernel/optprobes.c op_callback_addr = (kprobe_opcode_t *)ppc_kallsyms_lookup_name("optimized_callback"); ppc_kallsyms_lookup_name 248 arch/powerpc/kernel/optprobes.c emulate_step_addr = (kprobe_opcode_t *)ppc_kallsyms_lookup_name("emulate_step");