lkml.org 
[lkml]   [2005]   [Sep]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH 2.6.13-rc6-rt9] PI aware dynamic priority adjustment
Date
> On another issue along this line, I have been thinking of changing the 
> x86 TSC arch cycle size to 1ns. (NOT the resolution, the units for the
> arch cycle.) The reason to do this is to correctly track changes in cpu
> frequency as it is today, we would need to track down and update all
> pending HR timers when ever the frequency changed. By using a common
> unit all we need to do is change the conversion constants (well I guess
> they would not be constants any more :). I REALLY don't want to do this
> as it does add conversion overhead, but I can not think of another clean
> way to track TSC frequency changes.

sched_clock does this conversion at sampling time, too.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-09-26 23:06    [W:0.480 / U:5.932 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site