On Friday 08 April 2011 06:29 pm, Bruce Evans wrote:
> On Fri, 8 Apr 2011, Jung-uk Kim wrote:
> > Log:
> >  Refactor DELAYDEBUG as it is only useful for correcting i8254
> > frequency.
>
> Er, DELAYDEBUG has nothing to do with the i8254 except that the
> non-i8254 case was broken (mostly in unreachable code, and missing
> instrumentation corresponding to the getit_calls counter).  Now it
> is more broken -- e.g., configuring DELAYDEBUG now prevents the
> non-i8254 timers from even being compiled.

Non-i8254 case was broken far too long and nobody cared to fix it.  
So, I concluded it isn't "useful".  If you need to fix it, please 
feel free. :-)

Jung-uk Kim
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