Attr.Kind
type 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
| Dummy
val to_string : t -> string
val of_string : string -> t