__preempt_count_add
__preempt_count_add(-val);
__preempt_count_add(NMI_OFFSET + HARDIRQ_OFFSET); \
#define preempt_count_add(val) __preempt_count_add(val)
#define __preempt_count_inc() __preempt_count_add(1)
__preempt_count_add(val);
__preempt_count_add(cnt);