All patches are in v3.19-rc1 and thus in Vivid.
** Changed in: linux (Ubuntu)
Status: Fix Committed => Fix Released
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1400411
Title:
Feature: cpuidle: Enable fastsleep and winkle in ubuntu 14.04.02
kernel
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Utopic:
Fix Released
Bug description:
SRU Justification:
[Impact]
Users would like to be able to use fastsleep and winkle cpuidle states in the
3.16 Ubuntu kernel when using powernv.
[Fix]
commits
d6a4f70909d279004a2b3d539e240e07b1ecc1cb
56548fc0e86cb9156af7a7e1f15ba78f251dafaf
8117ac6a6c2fa0f847ff6a21a1f32c8d2c8501d0
8eb8ac89a364305d05ad16be983b7890eb462cc3 *backported*
7cba160ad789a3ad7e68b92bf20eaad6ed171f80 *backported*
77b54e9f213f76a23736940cf94bcd765fc00f40
upstream
[Test Case]
Testing fastsleep
-----------------
With these patches cpuidle framework picks up fastsleep as one of the idle
states. You can observe the cpus entering fastsleep by checking
/sys/devices/system/cpu/cpuXX/cpuidle/state2/name. This should show FastSleep.
Then while system is idle check
/sys/devices/system/cpu/cpuXX/cpuidle/state2/time increment over time
This shows the amount of time a particular cpu was in fastsleep.
Testing Winkle
--------------
With these patches, offline cpus enter winkle. So test this by offlining and
onlining cpus.
ppc64_cpu --cores-on=1
ppc64_cpu --cores-on=X where X is the total number of cores available in the
machine.
--
This is a feature request to enable power management features
fastsleep and winkle cpuidle states in ubuntu -14.04.02 kernel. The
cpuidle state management patches have been posted to Linux Kernel
Community.
Mailing list:
[PATCH 0/4] powernv: cpuidle: Redesign idle states management
https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-November/122433.html
Patchset:
[1/4] powerpc: powernv: Switch off MMU before entering nap/sleep/rvwinkle mode
https://patchwork.ozlabs.org/patch/406249/
[2/4] powerpc/powernv: Enable Offline CPUs to enter deep idle states
https://patchwork.ozlabs.org/patch/406250/
[3/4] powernv: cpuidle: Redesign idle states management
https://patchwork.ozlabs.org/patch/406256/
[4/4] powernv: powerpc: Add winkle support for offline cpus
https://patchwork.ozlabs.org/patch/406251/
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1400411/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
