148 	struct bts_phys *phys = &buf->buf[buf->cur_buf];  in bts_config_buffer()  local
149 	unsigned long index, thresh = 0, end = phys->size;  in bts_config_buffer()
150 	struct page *page = phys->page;  in bts_config_buffer()
155 		if (buf->end < phys->offset + buf_size(page))  in bts_config_buffer()
156 			end = buf->end - phys->offset - phys->displacement;  in bts_config_buffer()
158 		index -= phys->offset + phys->displacement;  in bts_config_buffer()
168 	ds->bts_buffer_base = (u64)(long)page_address(page) + phys->displacement;  in bts_config_buffer()
176 static void bts_buffer_pad_out(struct bts_phys *phys, unsigned long head)  in bts_buffer_pad_out()  argument
178 	unsigned long index = head - phys->offset;  in bts_buffer_pad_out()
180 	memset(page_address(phys->page) + index, 0, phys->size - index);  in bts_buffer_pad_out()
379 	struct bts_phys *phys, *next_phys;  in bts_buffer_reset()  local
387 	phys = &buf->buf[buf->cur_buf];  in bts_buffer_reset()
388 	space = phys->offset + phys->displacement + phys->size - head;  in bts_buffer_reset()
395 		/* See if next phys buffer has more space */  in bts_buffer_reset()
400 		gap = buf_size(phys->page) - phys->displacement - phys->size +  in bts_buffer_reset()
411 					bts_buffer_pad_out(phys, head);  in bts_buffer_reset()
415 				/* Advance to next phys buffer */  in bts_buffer_reset()
416 				phys = next_phys;  in bts_buffer_reset()
418 				head = phys->offset + phys->displacement;  in bts_buffer_reset()