nr_hardirq_read_safe 209 kernel/locking/lockdep_proc.c nr_hardirq_read_safe = 0, nr_hardirq_read_unsafe = 0, nr_hardirq_read_safe 242 kernel/locking/lockdep_proc.c nr_hardirq_read_safe++; nr_hardirq_read_safe 313 kernel/locking/lockdep_proc.c nr_hardirq_read_safe);