On Mon, 2012-07-23 at 02:07 +0100, Ben Hutchings wrote: > 3.2-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Peter Zijlstra <[email protected]> > > commit 5167e8d5417bf5c322a703d2927daec727ea40dd upstream. > > Thanks to Charles Wang for spotting the defects in the current code: > > - If we go idle during the sample window -- after sampling, we get a > negative bias because we can negate our own sample. > > - If we wake up during the sample window we get a positive bias > because we push the sample to a known active period. > > So rewrite the entire nohz load-avg muck once again, now adding > copious documentation to the code. [...]
Based on <http://bugs.debian.org/674153>, I think we also need: 556061b sched/nohz: Fix rq->cpu_load[] calculations 5aaa0b7 sched/nohz: Fix rq->cpu_load calculations some more Does this ('sched/nohz: Rewrite and fix load-avg computation -- again') depend in any way on those, or are they separate fixes? Ben. -- Ben Hutchings If more than one person is responsible for a bug, no one is at fault.
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