enum PS_RESOURCE_TYPE

typedef enum _PS_RESOURCE_TYPE
{
         PsResourceNonPagedPool = 0,
         PsResourcePagedPool = 1,
         PsResourcePageFile = 2,
         PsResourceWorkingSet = 3,
         PsResourceCpuRate = 4,
         PsResourceMax = 5
} PS_RESOURCE_TYPE;

Windows Vista Kernel Structures