CPU_DTRACE_DROP
DTRACE_CPUFLAG_SET(CPU_DTRACE_DROP);
*flags |= CPU_DTRACE_DROP;
*flags |= CPU_DTRACE_DROP;
*flags |= CPU_DTRACE_DROP;
if (*flags & CPU_DTRACE_DROP)
#define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP)