cpufreq: Use idle micro-accounting information in ondemand governor
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- v1 Latest6 patches 1 replyIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/6 | cpufreq: Add cpu number parameter to __cpufreq_driver_getavg()arch/ drivers/ drivers/ +1 more | +11 | 0 replies | |
| 2/6 | cpufreq: Change load calculation in ondemand for software coordinationdrivers/ | +35 | 0 replies | |
| 3/6 | cpufreq: get_cpu_idle_time() changes in ondemand to suit idle-microaccountingdrivers/ | +15 | 0 replies | |
| 4/6 | cpufreq_ondemand: Parameterize down differentialdrivers/ | +9 | 0 replies | |
| 5/6 | cpufreq: Changes to get_cpu_idle_time_us(), to be used in ondemand governorinclude/ kernel/ | +11 | 0 replies | |
| 6/6 | cpufreq: Add idle microaccounting in ondemand governordrivers/ | +45 | 0 replies |
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Cover letter [patch 0/6] cpufreq: Use idle micro-accounting information in ondemand governor
Currently, ondemand governor uses jiffy based idle statistics which is very coarse grained. As a result, ondemand uses a big gaurd band around CPU utilization while calculating the next freq.
This patchset lets ondemand use idle microaccounting when available (when tickless feature is present) and switches to a smaller gaurd band. This lets us do more aggressive power savings in partial idle workloads.
Signed-off-by Venkatesh Pallipadi <[email protected]>