[RFC] Prepend timestamp in msgbuf

[Nikolay Denev]

On Oct 13, 2011, at 9:40 PM, Arnaud Lacombe wrote:

> Hi,
> 
> On Thu, Oct 13, 2011 at 2:00 PM,  <lacombar at gmail.com> wrote:
>> From: Arnaud Lacombe <lacombar at gmail.com>
>> 
>> Hi folks,
>> 
>> There is many case recently when I really wished timestamp were present in the
>> post-mortem msgbuf. Such situation could be when userland application segfault
>> potentially triggering a panic/crash, or have information about the time-wise
>> location of a given message (kernel or userland).
>> 
>> Attached patch is available in the git repository at:
>>  git://github.com/lacombar/freebsd.git master/topic/msgbuf-timestamp
>> 
>> Arnaud Lacombe (3):
>>      msgbuf(4): convert `msg_needsnl' to a bit flag
>>      msgbuf(4): add logic to prepend timestamp on new line
>>      msgbuf(4): add a sysctl to toggle timestamp prepend
>> 
>>  sys/kern/subr_msgbuf.c |   53 ++++++++++++++++++++++++++++++++++++++++-------
>>  sys/sys/msgbuf.h       |    4 ++-
>>  2 files changed, 48 insertions(+), 9 deletions(-)
>> 

Cool!

I've dreamt for something like this for a long time, it can be very useful.

Regards,
Nikolay