trace_hardirqs_off   32 include/linux/irqflags.h # define trace_hardirqs_off()		do { } while (0)
trace_hardirqs_off 2252 kernel/lockdep.c void trace_hardirqs_off(void)
trace_hardirqs_off  315 kernel/trace/trace_irqsoff.c void trace_hardirqs_off(void)