dmesg: Document kern.msgbuf_show_timestamp

[imp]

Summary

kern.msgbuf_show_timestamp=1 turns on timestamps in kernel's message
buffer which dmesg(8) prints.

Sponsored by: Netflix

[rpokala]

sbin/dmesg/dmesg.8

93

"The kernel's placing data" sounds... wrong. I can't quite put my finger on why. :-S

In any case, perhaps one of these alternate phrasings?

variables can be used to control how the kernel places data into

or

variables can be used to control the behavior of the kernel when placing data into

or

variables can be used to control the kernel's behavior when placing data into

[allanjude]

sbin/dmesg/dmesg.8

93

Any of Ravi's 3 recommendations sounds much better to me as well

[emaste]

I like Ravi's first, but you can also drop "can be used to"
The following sysctl variables control how the kernel ...

[imp]

Yea, I stole the wording from one of the geom man pages.
I'll update. I accidentally pushed this too soon, but I'll update with this review.

[pauamma_gundo.com]

sbin/dmesg/dmesg.8

76–77

Having a sentence ending in . between one ending in : and the list : says follows looks wrong.