BTS_SAFETY_MARGIN 160 arch/x86/events/intel/bts.c if (end - index > BTS_SAFETY_MARGIN) BTS_SAFETY_MARGIN 161 arch/x86/events/intel/bts.c thresh = end - BTS_SAFETY_MARGIN; BTS_SAFETY_MARGIN 388 arch/x86/events/intel/bts.c if (space <= BTS_SAFETY_MARGIN) { BTS_SAFETY_MARGIN 425 arch/x86/events/intel/bts.c wakeup = BTS_SAFETY_MARGIN + BTS_RECORD_SIZE + handle->wakeup -