Re: RFC: revert request for cpuidle patches e11538d1 and 69a37bea

[Len Brown]

>> OK, I'll queue up the reverts as fixes for 3.11-rc4.
>
> So, the reverts are on the fixes-next branch of the linux-pm.git tree that you
> can access at
>
> http://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.git/log/?h=fixes-next
>
> However, they are not simple reverts as we've had some non-trivial changes on
> top of those commits already, so I'd appreciate it a lot if somebody could
> double check if I didn't break anything in them.

I've verified that the reverts improve netperf TCP_RR performance.

Here I've got two Xeon's, slightly different, so I run in both directions.
Also I run two ways -- Out-of-the-box, plus with cpufreq
set to max frequency.  The reverts improve all 4 cases:

JKT â IVT                IVT â JKT

 3.11.0-rc2        baseline w/o revert                Out of Box

20420                19963
20658                19915
20298                20320

 3.11.0-rc2        baseline w/o revert                max freq

59658                51427
59663                51503
59416                51343

3.11.0-rc2-00002-g74bce39                        Linux-pm âfixes-nextâ branch

3.11.0-rc2-00002-g74bce39                Out of box
23227                22056
23306                22125
23387                40226                40k result saw some 2.2 ghz
vs 1.2 ghz in other runs
                21991

3.11.0-rc2-00002-g74bce39                Max-freq
67240                57645
64880                56764
65924                57435

Tested-by: Len Brown <len.brown@xxxxxxxxx>

thanks,
Len Brown, Intel Open Source Technology Center
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