| From: "Vitaly Wool"<vitalywool at gmail.com> | | Pavel, | | On 9/14/06, Pavel Machek <pavel at ucw.cz> wrote: | > | > > Pavel, | > | > > > > operating points it is possible to implement the "cpufreq frequency | > > > > selection logic" in user space and having such functionality in the kernel | > > > > just violates the main rule of having everything possible outside of the | > > > > kernel. | > > > | > > > You got the rules wrong. "Keep the code out of kernel" is important | > > > rule, but probably not the main one. | > > | > > from aside, it looks like you're choosing 'rules' and assign then | > > 'priorities' in a too arbitrary way which is by a strange accident | > > fits your point of view best of all. | > > May I remind you that Linux world is not only laptops and Sharp Zaurus? ;) | > | > Actually, laptops and zauruses seem to be the only "interesting" | > machines from pm perspective. Then there are Motorola cellphones, but | > Motorola tried hard not to enable users changing kernel... so they are | > irrelevant. | | Well, I never said Zaurus was no good :) | Please don't forget about Nokia 770 and its possible follow-ups. | Also, please keep in mind that if we come to a joint PM solution that | is in mainline, Motorola will use it... and will be contributing | changes back to the community. If there was a PM solution adopted in | mainline which fit the needs of embedded devices, more vendors would | turn to using Linux. | I. e., what prevents Sharp from making a open-code Lnux-based cell | phone? I do think that the absense of PM framework suitable for | embedded is one of the main engineering reasons... So let us broaden | our views and work together :) | | Vitaly --- Source for the power management in current Motorola products is available on opensource.motorola.com. However, mainstream power management did not meet our needs, so what's there is a replacement, rather than modifications. Because it's product-specific, it's not particularly generalized and probably wouldn't be suitable for use in a laptop... scott -- scott preece motorola mobile devices, il67, 1800 s. oak st., champaign, il 61820 e-mail: preece at motorola.com fax: +1-217-384-8550 phone: +1-217-384-8589 cell: +1-217-433-6114 pager: 2174336114 at vtext.com
