On Tue, 2011-10-11 at 18:03 +0200, Vincent Guittot wrote: > > How do you know the task is 'small' ? > > > > I want to use cpufreq to be notified that we have a large/small cpu > load. If we have several tasks but the cpu uses the lowest frequency, > it "should" mean that we have small tasks that are running (less than > 20ms*95% of added duration) and we could gather them on one cpu (by > increasing the cpu_power on a dual core). > > > For that you would need to track a time-weighted effective load average > > of the task and we don't have that. > > > > yes, that's why I use cpufreq until better option, like a > time-weighted load average, is available
Egads... so basically you're (ab)using the ondemand cpufreq stats to get a guestimate of the time-weighted load of the cpu, and then (ab)use the scheduler cpufreq hook to pump its capacity numbers. No cookies for you. _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
