cvs commit: src/sys/sys ktr.h src/sys/kern kern_clock.c kern_switch.c

Nate Lawson nate at
Sun Dec 18 06:25:21 PST 2005

Scott Long wrote:
> John Baldwin wrote:
>> On Friday 16 December 2005 10:57 pm, Nate Lawson wrote:
>>> njl         2005-12-17 03:57:10 UTC
>>>  FreeBSD src repository
>>>  Modified files:
>>>    sys/sys              ktr.h
>>>    sys/kern             kern_clock.c kern_switch.c
>>>  Log:
>>>  Clean up unused or poorly utilized KTR values.  Remove KTR_FS, 
>>>  and KTR_IO as they were never used.  Remove KTR_CLK since it was only
>>>  used for hardclock firing and use KTR_INTR there instead.  Remove
>>>  KTR_CRITICAL since it was only used for crit enter/exit and use
>>>  KTR_CONTENTION instead.
>> Actually, I thought I had mentioned that KTR_CRITICAL should stay as 
>> it is (well, and the larger thought about doing away with the entire 
>> bitmask concept which no one responded to).  critical_enter/exit are 
>> not related in the least to KTR_CONTENTION which is used for 
>> MUTEX_PROFILING, nor do they have anything at all to do with 
>> contention of any sort.  If you must stick them somewhere, put them in 
>> KTR_SCHED instead.  I think scottl@ recently added support to 
>> schedgraph for those traces anyway (though I'm not sure if they are in 
>> his local tree or CVS).
> Yes, it's in CVS.  In the big scheme of things, it's probably a good
> idea to put KTR_CRITICAL in the same domain as KTR_SCHED.  And yeah, it
> has nothing to do with KTR_CONTENTION.  It was this part of the drive-by
> commit that irritated me most.  A simple email saying, "I'm about to do
> this, please review," would have have been welcomed and likely not even
> ignored.

I fear I've been phk'd.  You asked why I didn't ask for comments and I 
directed you to the thread on arch@ where I asked for comments.  cvs 
annotate didn't show either of you anywhere near the KTR_CRITICAL stuff, 
except I know in the past John has worked on critical sections not 
disabling interrupts.  I did my best to take into account his comments 
in a minimal way.

So, relax, you're not being attacked, and I'll continue to fix this today.


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