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Date: Fri, 22 Feb 2013 07:26:48 +0530 From: Viresh Kumar <viresh.kumar@...aro.org> To: Stratos Karafotis <stratosk@...aphore.gr> Cc: "Rafael J. Wysocki" <rjw@...k.pl>, cpufreq@...r.kernel.org, linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v3 linux-next] cpufreq: ondemand: Calculate gradient of CPU load to early increase frequency On 21 February 2013 23:09, Stratos Karafotis <stratosk@...aphore.gr> wrote: > Thanks again. Following V3 with your suggestion. > > Regards, > Stratos > > -----------------------8<-------------------------------------------- > Instead of checking only the absolute value of CPU load_freq to increase > frequency, we detect forthcoming CPU load rise and increase frequency > earlier. > > Every sampling rate, we calculate the gradient of load_freq. If it is > too steep we assume that the load most probably will go over > up_threshold in next iteration(s) and we increase frequency immediately. > > New tuners are introduced: > - early_demand: to enable this functionality (disabled by default). > - grad_up_threshold: over this gradient of load we will increase > frequency immediately. > > Signed-off-by: Stratos Karafotis <stratosk@...aphore.gr> Acked-by: Viresh Kumar <viresh.kumar@...aro.org> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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