Lines Matching refs:can

36 At this point, userspace can be notified so it empties the first
41 message couldn't fit into a sub-buffer.  Userspace can use this
44 After copying it, userspace can notify the kernel that a sub-buffer
47 A relay channel can operate in a mode where it will overwrite data not
101 klog and the relay-apps examples can be found in the relay-apps
114 	    memory space. Note that you can't do a partial mmap - you
120 	    in no-overwrite mode (the default), it can be read at any
194 created for it in the host filesystem, which can be and mmapped or
263 easily implement random-access-on-buffer-boundary schemes, which can
273 The create_buf_file() implementation can also be defined in such a way
275 default per-cpu set.  This can be useful for applications interested
285 normal channel-writing functions, e.g. relay_write(), can still be
300 These channels have no files associated and can be created with
310 relay channels can be used in either of two modes - 'overwrite' or
315 interface to retrieve channel data, you can ignore the details of this
324 there is no consumer or if the consumer can't consume sub-buffers fast
332 write functions described below.  Whenever a message can't fit into
370 buffer switch can continue.
399 Header information can be reserved at the beginning of each sub-buffer
401 subbuf_start() callback.  This reserved area can be used to store
422 you'll never be logging from interrupt context, you can use
424 don't return a value, so you can't determine whether or not they
428 which case you can detect a failed write in the subbuf_start()
432 can be written to later.  This would typically be used in applications
436 using relay_reserve() can keep a count of the number of bytes actually
439 at http://relayfs.sourceforge.net for an example of how this can be
451 forces a sub-buffer switch on all the channel buffers, and can be used
460 can be used for this purpose - it resets a channel to its initial
465 Finally, there are a couple of utility callbacks that can be used for
468 unmapped.  The client can use this notification to trigger actions