cpuidle: small improvements & fixes for menu governor
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b4 am [email protected]Versions newest first
- v1 Latest3 patches 9 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | cpuidle,x86: increase forced cut-off for polling to 20usdrivers/ | +1 | 3 replies | |
| 2/3 | cpuidle,menu: use interactivity_req to disable pollingdrivers/ | +1 | 0 replies | |
| 3/3 | cpuidle,menu: smooth out measured_us calculationdrivers/ | +3 | 0 replies |
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Cover letter [PATCH 0/3] cpuidle: small improvements & fixes for menu governor
While working on a paravirt cpuidle driver for KVM guests, I noticed a number of small logic errors in the menu governor code.
These patches should get rid of some artifacts that can break the logic in the menu governor under certain corner cases, and make idle state selection work better on CPUs with long C1 exit latencies.
I have not seen any adverse effects with them in my (quick) tests. As expected, they do not seem to do much on systems with many power states and very low C1 exit latencies and target residencies.