Add cpuidle-powernv upstream bug fixes to fix kernel regression due to cpuidle in 15.04 kernel
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
High
|
Andy Whitcroft |
Bug Description
This is a feature request to include the following patches in 15.04 kernel.
[1] 92c83ff5b42b109 cpuidle/powernv: Read target_residency value of idle states from DT if available
[2] 70734a786acfd1 driver/
[3] tick/broadcast-
https:/
[4] tick/hotplug: Handover time related duties before cpu offline
https:/
[1] and [2] patches provide fixes to read the latency and target_residency values of different idle states from the device tree if they are present in the device tree. This fix will avoid cpu from aggressively entering into fastsleep.
[3] and [4] are important fixes against a kernel regression, cpu offline bug down the cpuidle path which was reported in the community
Thanks for the new bug. I understand that patches [2] and [3] are not accepted upstream yet, right?
tags: | added: architecture-ppc64le bugnameltc-123005 severity-high targetmilestone-inin1504 |
affects: | ubuntu → linux (Ubuntu) |
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
tags: | added: kernel-da-key |
Changed in linux (Ubuntu): | |
importance: | Undecided → High |
assignee: | nobody → Andy Whitcroft (apw) |
milestone: | none → ubuntu-15.03 |
Patch [4] in this series appears to be still being worked, and there is some implication in the conversation that further revisions maybe forthcoming. Can we confirm these four are all that are needed at this time.