[lkml]   [2002]   [Aug]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH][2.5.32] CPU frequency and voltage scaling (0/4)
In article <>,
Alan Cox <> wrote:
>> { min-Hz, max-Hz, policy }
>For a few of the processors "event-hz" or similar would be nice. The
>Geode supports hardware assisted bursting to full processor speed when
>doing SMM, I/O and IRQ handling.

Hmm.. I would assume that you'd just use the high frequency for that?
So, for example, assuming you have a 600/300 Geode, when you do

{ 0, ~0UL, "power-save" }

that would tell the Geode driver to run at 300MHz normally
("power-save"), and at 600Mhz when doing critical events.

In contrast, a

{ 0, ~0UL, "performance" }

mode would mean that it always runs at 600MHz (modulo heat throttling,
of course).

And a

{ 300, 300, "power-save" }

means that you want the chip to always run at 300MHz, even when handling
critical events.

I don't know the exact details of what kinds of frequencies the Geode
supports, but it sounds to me like you don't really need another
frequency value..

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:28    [W:0.156 / U:1.948 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site