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PEP_PROCESSOR_IDLE_STATE_UPDATE structure (pepfx.h)

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The PEP_PROCESSOR_IDLE_STATE_UPDATE structure contains the updated properties of a processor idle state.

Syntax

typedef struct _PEP_PROCESSOR_IDLE_STATE_UPDATE {
  ULONG Version;
  ULONG Latency;
  ULONG BreakEvenDuration;
} PEP_PROCESSOR_IDLE_STATE_UPDATE, *PPEP_PROCESSOR_IDLE_STATE_UPDATE;

Members

Version

The version number of this structure. Set this member to PEP_PROCESSOR_IDLE_STATE_UPDATE_VERSION.

Latency

The worst-case latency, in 100-nanosecond units, that the platform requires to wake from this platform idle state in response to a wake event.

BreakEvenDuration

The minimum amount of time, specified in 100-nanosecond units, that the platform must spend in this idle state to make a transition to this state worthwhile. PoFx uses this member value as a hint to avoid switching the platform to an idle state unless the platform is likely to remain in this state for at least the amount of time specified by BreakEvenDuration.

Remarks

The Update parameter to the UpdateProcessorIdleState routine is a pointer to a PEP_PROCESSOR_IDLE_STATE_UPDATE structure. This routine updates the properties of the specified idle state for a processor. The PEP must not call this routine until it has responded to a PEP_NOTIFY_PPM_QUERY_IDLE_STATES_V2 notification for this processor.

Requirements

Requirement Value
Minimum supported client Supported starting with Windows 10.
Header pepfx.h (include Pep_x.h)

See also

PEP_NOTIFY_PPM_QUERY_IDLE_STATES_V2

UpdateProcessorIdleState