struct TRACE_ENABLE_INFO

typedef struct _TRACE_ENABLE_INFO
{
     ULONG IsEnabled;
     UCHAR Level;
     UCHAR Reserved1;
     WORD LoggerId;
     ULONG EnableProperty;
     ULONG Reserved2;
     UINT64 MatchAnyKeyword;
     UINT64 MatchAllKeyword;
} TRACE_ENABLE_INFO, *PTRACE_ENABLE_INFO;

Windows Vista Kernel Structures