Attr.Kindtype t = | Cycles| Instructions| Cache_references| Cache_misses| Branch_instructions| Branch_misses| Bus_cycles| Stalled_cycles_frontend| Stalled_cycles_backend| Ref_cpu_cycles| Cpu_clock| Task_clock| Page_faults| Context_switches| Cpu_migrations| Page_faults_min| Page_faults_maj| Alignment_faults| Emulation_faults| Dummyval to_string : t -> stringval of_string : string -> t