PERFINFO_PO_NOTIFY_DEVICE - NtDoc

#ifndef _NTWMI_H

//
// This structure is logged when PopNotifyDevice calls into a driver
// to set the power state of a device.
//
typedef struct _PERFINFO_PO_NOTIFY_DEVICE
{
    //
    // This field is used to match notification and completion log
    // entries for a device.
    //

    PVOID Irp;

    //
    // Base address of the driver that owns this device.
    //

    PVOID DriverStart;

    //
    // Device node properties.
    //

    UCHAR OrderLevel;

    //
    // Major and minor IRP codes for the request made to the driver.
    //

    UCHAR MajorFunction;
    UCHAR MinorFunction;

    //
    // Type of power irp
    //
    POWER_STATE_TYPE Type;
    POWER_STATE      State;

    //
    // Length of the device name in characters excluding terminating NUL,
    // and the device name itself. Depending on how much fits into our
    // stack buffer, this is the *last* part of the device name.
    //

    ULONG DeviceNameLength;
    WCHAR DeviceName[1];

} PERFINFO_PO_NOTIFY_DEVICE, *PPERFINFO_PO_NOTIFY_DEVICE;

#endif
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