Re: Enhanced SpeedStep driver available
Colin Percival <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.mobile |
|---|---|
| Message-ID | <[email protected]> |
At 17:19 16/08/2004, Arne Schwabe wrote: >Colin Percival <[email protected]> writes: >> Thanks to everyone who has been sending me data about their >> processors (and in particular, the 90nm versions), I now have >> a first draft of a Enhanced SpeedStep driver available. [...] > >[2:14]arne@kamino:~/tmp/estctrl% sudo sysctl hw.est_curfreq=1600 >hw.est_curfreq: 600 -> 600 >[2:14]arne@kamino:~/tmp/estctrl% sudo sysctl hw.est_curfreq=1600 >hw.est_curfreq: 1600 -> 1600 > >For some reason, the message when I set cpu freq higher does not work I think I know what cases this: It takes a few microseconds for the processor to change frequencies, and sysctl(8) is checking the new value too soon. I've added a small delay before returning from the sysctl handler; this should make it impossible for this race to occur. I've put an updated version online; could you try it and tell me if this problem goes away? Colin Percival _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-mobile To unsubscribe, send any mail to "[email protected]"