global pstated

function masked_dflag:long(f) { return ((f & 1 << 9) != 0) }

probe irq_handler.entry {
  // Record if pstate.d is masked
  pstated[cpu(), irq] = masked_dflag(flags)
}

probe irq_handler.exit {
  if ((!masked_dflag(flags)) && pstated[cpu(), irq]) {
    printf("d flag unmasked in irq %d(%s)\n", irq, kernel_string(dev_name));
  }
  delete pstated[cpu(), irq]
}