69 	struct rchan_buf * __percpu *buf; /* per-cpu channel buffers */  member
101 	int (*subbuf_start) (struct rchan_buf *buf,
134 					  struct rchan_buf *buf,
171 extern int relay_buf_full(struct rchan_buf *buf);
173 extern size_t relay_switch_subbuf(struct rchan_buf *buf,
194 	struct rchan_buf *buf;  in relay_write()  local
197 	buf = *this_cpu_ptr(chan->buf);  in relay_write()
198 	if (unlikely(buf->offset + length > chan->subbuf_size))  in relay_write()
199 		length = relay_switch_subbuf(buf, length);  in relay_write()
200 	memcpy(buf->data + buf->offset, data, length);  in relay_write()
201 	buf->offset += length;  in relay_write()
221 	struct rchan_buf *buf;  in __relay_write()  local
223 	buf = *get_cpu_ptr(chan->buf);  in __relay_write()
224 	if (unlikely(buf->offset + length > buf->chan->subbuf_size))  in __relay_write()
225 		length = relay_switch_subbuf(buf, length);  in __relay_write()
226 	memcpy(buf->data + buf->offset, data, length);  in __relay_write()
227 	buf->offset += length;  in __relay_write()
228 	put_cpu_ptr(chan->buf);  in __relay_write()
245 	struct rchan_buf *buf = *get_cpu_ptr(chan->buf);  in relay_reserve()  local
247 	if (unlikely(buf->offset + length > buf->chan->subbuf_size)) {  in relay_reserve()
248 		length = relay_switch_subbuf(buf, length);  in relay_reserve()
252 	reserved = buf->data + buf->offset;  in relay_reserve()
253 	buf->offset += length;  in relay_reserve()
256 	put_cpu_ptr(chan->buf);  in relay_reserve()
268 static inline void subbuf_start_reserve(struct rchan_buf *buf,  in subbuf_start_reserve()  argument
271 	BUG_ON(length >= buf->chan->subbuf_size - 1);  in subbuf_start_reserve()
272 	buf->offset = length;  in subbuf_start_reserve()