Dale Pontius wrote: > While I've been typing this, the laptop has been running Gentoo's > "emerge --sync". It just finished and I started powertop, preparing to > start unloading USB modules to see if I could get into C3. It's already > there. The listing is tacked onto the end. What seems odd to me is > that all of the numbers are essentially the same as the listing > yesterday, except that yesterday it was in C2, and today it's in C3. > > Can you point me to the source that handles these state transitions, or > any documentation? >
drivers/acpi/processor_idle.c handles this code. The "old" code (mainline) isn't very smart, and doesn't deal with tickless well. One thing to try is to use the -hrt patches, they contain a rewrite of this code, specifically the "menu governer" which is designed for use in a tickless idle kernel. _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
