COUNTERS.H

The public symbol file NTKRPAMP.PDB for the original release of Windows 10 tells that the kernel is built with the COUNTERS.H header at

d:\th\minkernel\ntos\inc

and draws from it the following type definitions:

Line Number Type
30 struct _PCW_PROCESSOR_INFO
100 struct _ETW_SESSION_PERF_COUNTERS
116 struct _ETW_PERF_COUNTERS
147 struct _THERMAL_ZONE_COUNTERS

The header COUNTERS.H is not known in any Device Driver Kit (DDK) or Windows Driver Kit (WDK).