Hello, list I met some problems when duplicating ACPI processor procfs interface in sysfs. #cat /proc/acpi/processor/CPU0/limit Active limit: P0:T0 User limit: P0:T0 Thermal limit: P0,T0 IMO, "Tx" is easy to understand. It indicates the active T-state, T-state set by user and T-state set by thermal (in passive mode). But what does the "Px" stand for? After reading the code in processor_thermal.c, I don't think user or thermal will change its value. And I don't know if it's still needed when porting to sysfs. Best regards, Zhang.Rui(Ray) - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html