66 	struct rchan_buf *buf[NR_CPUS]; /* per-cpu channel buffers */  member
96 	int (*subbuf_start) (struct rchan_buf *buf,
108         void (*buf_mapped)(struct rchan_buf *buf,
118         void (*buf_unmapped)(struct rchan_buf *buf,
146 					  struct rchan_buf *buf,
181 extern int relay_buf_full(struct rchan_buf *buf);
183 extern size_t relay_switch_subbuf(struct rchan_buf *buf,
204 	struct rchan_buf *buf;  in relay_write()  local
207 	buf = chan->buf[smp_processor_id()];  in relay_write()
208 	if (unlikely(buf->offset + length > chan->subbuf_size))  in relay_write()
209 		length = relay_switch_subbuf(buf, length);  in relay_write()
210 	memcpy(buf->data + buf->offset, data, length);  in relay_write()
211 	buf->offset += length;  in relay_write()
231 	struct rchan_buf *buf;  in __relay_write()  local
233 	buf = chan->buf[get_cpu()];  in __relay_write()
234 	if (unlikely(buf->offset + length > buf->chan->subbuf_size))  in __relay_write()
235 		length = relay_switch_subbuf(buf, length);  in __relay_write()
236 	memcpy(buf->data + buf->offset, data, length);  in __relay_write()
237 	buf->offset += length;  in __relay_write()
255 	struct rchan_buf *buf = chan->buf[smp_processor_id()];  in relay_reserve()  local
257 	if (unlikely(buf->offset + length > buf->chan->subbuf_size)) {  in relay_reserve()
258 		length = relay_switch_subbuf(buf, length);  in relay_reserve()
262 	reserved = buf->data + buf->offset;  in relay_reserve()
263 	buf->offset += length;  in relay_reserve()
276 static inline void subbuf_start_reserve(struct rchan_buf *buf,  in subbuf_start_reserve()  argument
279 	BUG_ON(length >= buf->chan->subbuf_size - 1);  in subbuf_start_reserve()
280 	buf->offset = length;  in subbuf_start_reserve()