trace_hwlat_callback   16 include/linux/ftrace_irq.h extern void trace_hwlat_callback(bool enter);
trace_hwlat_callback   23 include/linux/ftrace_irq.h 		trace_hwlat_callback(true);
trace_hwlat_callback   33 include/linux/ftrace_irq.h 		trace_hwlat_callback(false);