HARDIRQ_MASK       53 include/linux/preempt_mask.h #define hardirq_count()	(preempt_count() & HARDIRQ_MASK)
HARDIRQ_MASK       55 include/linux/preempt_mask.h #define irq_count()	(preempt_count() & (HARDIRQ_MASK | SOFTIRQ_MASK \