[PATCH 0/2] [BUGFIX] printk: Fix message continuation breakage involved with structured printk

Yoshihiro YUNOMAE
2013-12-20T09:43:12Z

Hi,

This patch set fixes message continuation breakage involved with structured
printk. A SCSI driver may output two continuation error messages like
scmd_printk("foo");
printf("bar\n");
Here, scmd_printk() is structured printk with key/value dictionary information.
Structured printk became to forcibly start a new line from commit c313af14, so
those SCSI continuation error messages are divided as follows:
[1234.567890] sd 2:0:0:0: [sdb] foo
[1234.567893] bar <---- Divided
However, the SCSI driver may expect following continuation error messages:
[1234.567893] sd 2:0:0:0: [sdb] foo bar
When user tools handle the error messages, that divided message will create
some inconveniences.

This patch set makes structured printk with dictionary information not start a
new line. Moreover, when multiple structured printk messages are continued,
this patch outputs those multiple dictionary information when we read /dev/kmsg.

Thanks!

---

Yoshihiro YUNOMAE (2):
printk: Add dictionary information in structure cont
printk: Delete LOG_NEWLINE flag for structured printk

kernel/printk/printk.c | 70 +++++++++++++++++++++++++++++++-----------------
1 file changed, 45 insertions(+), 25 deletions(-)

--
Yoshihiro YUNOMAE
Software Platform Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: yoshihiro.yunomae.ez@hitachi.com