| Age | Commit message (Collapse) | Author | Files | Lines | |
|---|---|---|---|---|---|
| 2019-09-06 | ABI: Update dev-kmsg documentation to match current kernel behaviour | James Byrne | 1 | -8/+7 | |
| Commit 5aa068ea4082 ("printk: remove games with previous record flags") abolished the practice of setting the log flag to 'c' for the first continuation line and '+' for subsequent lines. Now all continuation lines are flagged with 'c' and '+' is never used. Update the 'dev-kmsg' documentation to remove the reference to the obsolete '+' flag. In addition, state explicitly that only 8 bits of the <N> syslog prefix are used for the facility number when writing to /dev/kmsg. Link: http://lkml.kernel.org/r/0102016cf1b26630-8e9b337b-da49-43c6-b028-4250c2fac3ef-000000@eu-west-1.amazonses.com Cc: Steven Rostedt <[email protected]> Cc: [email protected] Signed-off-by: James Byrne <[email protected]> Reviewed-by: Sergey Senozhatsky <[email protected]> Signed-off-by: Petr Mladek <[email protected]> | |||||
| 2015-06-25 | printk: implement support for extended console drivers | Tejun Heo | 1 | -0/+9 | |
| printk log_buf keeps various metadata for each message including its sequence number and timestamp. The metadata is currently available only through /dev/kmsg and stripped out before passed onto console drivers. We want this metadata to be available to console drivers too so that console consumers can get full information including the metadata and dictionary, which among other things can be used to detect whether messages got lost in transit. This patch implements support for extended console drivers. Consoles can indicate that they want extended messages by setting the new CON_EXTENDED flag and they'll be fed messages formatted the same way as /dev/kmsg. "<level>,<sequnum>,<timestamp>,<contflag>;<message text>\n" If extended consoles exist, in-kernel fragment assembly is disabled. This ensures that all messages emitted to consoles have full metadata including sequence number. The contflag carries enough information to reassemble the fragments from the reader side trivially. Note that this only affects /dev/kmsg. Regular console and /proc/kmsg outputs are not affected by this change. * Extended message formatting for console drivers is enabled iff there are registered extended consoles. * Comment describing /dev/kmsg message format updated to add missing contflag field and help distinguishing variable from verbatim terms. Signed-off-by: Tejun Heo <[email protected]> Cc: David Miller <[email protected]> Cc: Kay Sievers <[email protected]> Reviewed-by: Petr Mladek <[email protected]> Cc: Tetsuo Handa <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> | |||||
| 2012-11-19 | doc: fix quite a few typos within Documentation | Masanari Iida | 1 | -1/+1 | |
| Correct spelling typo in Documentations Signed-off-by: Jiri Kosina <[email protected]> | |||||
| 2012-07-16 | kmsg - export "continuation record" flag to /dev/kmsg | Kay Sievers | 1 | -9/+20 | |
| In some cases we are forced to store individual records for a continuation line print. Export a flag to allow the external re-construction of the line. The flag allows us to apply a similar logic externally which is used internally when the console, /proc/kmsg or the syslog() output is printed. $ cat /dev/kmsg 4,165,0,-;Free swap = 0kB 4,166,0,-;Total swap = 0kB 6,167,0,c;[ 4,168,0,+;0 4,169,0,+;1 4,170,0,+;2 4,171,0,+;3 4,172,0,+;] 6,173,0,-;[0 1 2 3 ] 6,174,0,-;Console: colour VGA+ 80x25 6,175,0,-;console [tty0] enabled Signed-off-by: Kay Sievers <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> | |||||
| 2012-05-08 | kmsg - add Documentation/ABI/testing/dev-kmsg | Kay Sievers | 1 | -0/+90 | |
| Signed-off-by: Kay Sievers <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> | |||||