Re: Regression in 2.6.27 caused by commit bfc0f59

From: Linus Torvalds
Date: Mon Sep 01 2008 - 18:02:51 EST




On Mon, 1 Sep 2008, Thomas Gleixner wrote:
>
> The CPU calibration of < 2.6.27 is against PIT and does _NOT_ give me a
> pretty good estimation for TSC.

Umm. Which one. The 32-bit or the 64-bit?

I already pointed out that the 64-bit PIT calibration is pure and utter
GARBAGE. And I pointed out that the 32-bit one is a lot smarter.

> I was pretty happy when Alok beat me to unify the TSC calibration code
> as it solved one of my long standing todo items, which also filled my
> buglist on a regular base.

The problem is that he unified it around the _worse_ code.

Linus
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