371 	unsigned long head, space, next_space, pad, gap, skip, wakeup;  in bts_buffer_reset()  local
382 	space = phys->offset + phys->displacement + phys->size - head;  in bts_buffer_reset()
383 	pad = space;  in bts_buffer_reset()
384 	if (space > handle->size) {  in bts_buffer_reset()
385 		space = handle->size;  in bts_buffer_reset()
386 		space -= space % BTS_RECORD_SIZE;  in bts_buffer_reset()
388 	if (space <= BTS_SAFETY_MARGIN) {  in bts_buffer_reset()
403 			if (next_space > space || !space) {  in bts_buffer_reset()
411 				space = next_space;  in bts_buffer_reset()
427 	if (space > wakeup) {  in bts_buffer_reset()
428 		space = wakeup;  in bts_buffer_reset()
429 		space -= space % BTS_RECORD_SIZE;  in bts_buffer_reset()
432 	buf->end = head + space;  in bts_buffer_reset()
438 	if (!space)  in bts_buffer_reset()