smp_debug
smp_debug(100, KERN_DEBUG "CPU%d IPI_NOP\n", this_cpu);
smp_debug(100, KERN_DEBUG "CPU%d IPI_RESCHEDULE\n", this_cpu);
smp_debug(100, KERN_DEBUG "CPU%d IPI_CALL_FUNC\n", this_cpu);
smp_debug(100, KERN_DEBUG "CPU%d IPI_CPU_START\n", this_cpu);
smp_debug(100, KERN_DEBUG "CPU%d IPI_CPU_STOP\n", this_cpu);
smp_debug(100, KERN_DEBUG "CPU%d is alive!\n", this_cpu);
smp_debug(100, KERN_DEBUG "CPU%d ENTER_KGDB\n", this_cpu);
smp_debug(100, KERN_DEBUG "SMP: CPU:%d came alive after %ld _us\n",