PO_FX_PERF_STATE structure (wdm.h)
The PO_FX_PERF_STATE structure represents a performance state for a single component within a device.
Syntax
typedef struct _PO_FX_PERF_STATE {
ULONGLONG Value;
PVOID Context;
} PO_FX_PERF_STATE, *PPO_FX_PERF_STATE;
Members
Value
The value of this performance state. The units are specified by the Unit member of the PO_FX_COMPONENT_PERF_SET that contains this performance state. For example, if Value is 100000000 and the Unit member of the PO_FX_COMPONENT_PERF_SET is PoFxPerfStateUnitFrequency, this performance state represents 100 MHz.
Context
A pointer to additional context for the performance state that cannot be presented by the Value member. This data can be shared between the driver and the platform extension plug-in (PEP).
Using the Context member can hinder the visualization of performance states in Windows Performance Analyzer.
Remarks
The States member of the PO_FX_COMPONENT_PERF_SET structure contains an array of PO_FX_PERF_STATE elements.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Supported starting with Windows 10. |
| Header | wdm.h (include Wudfwdm.h) |