[GIT PULL] More power management updates for v4.20-rc1

From: Rafael J. Wysocki
Date: Tue Oct 30 2018 - 04:28:16 EST

Hi Linus,

Please pull from the tag

git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git \

with top-most commit c4ac6889930d027ffa5cf77e0c202e7e97a4be06

Merge branches 'pm-cpuidle' and 'pm-cpufreq'

on top of commit bd6bf7c10484f026505814b690104cdef27ed460

Merge tag 'pci-v4.20-changes' of

to receive additional power management updates for 4.20-rc1.

These remove a questionable heuristic from the menu cpuidle governor,
fix a recent build regression in the intel_pstate driver, clean up
ARM big-Little support in cpufreq and fix up hung task watchdog's
interaction with system-wide power management transitions.


- Fix build regression in the intel_pstate driver that doesn't
build without CONFIG_ACPI after recent changes (Dominik Brodowski).

- One of the heuristics in the menu cpuidle governor is based on a
function returning 0 most of the time, so drop it and clean up
the scheduler code related to it (Daniel Lezcano).

- Prevent the arm_big_little cpufreq driver from being used on ARM64
which is not suitable for it and drop the arm_big_little_dt driver
that is not used any more (Sudeep Holla).

- Prevent the hung task watchdog from triggering during resume from
system-wide sleep states by disabling it before freezing tasks and
enabling it again after they have been thawed (Vitaly Kuznetsov).

There is a merge conflict between the menu governor changes included
here and the (already merged) material from Andrew, but it should be
straightforward to resolve [1].


[1] https://lore.kernel.org/lkml/20181029130124.290346e9@xxxxxxxxxxxxxxxx/


Daniel Lezcano (2):
sched: Factor out nr_iowait and nr_iowait_cpu
cpuidle: menu: Remove get_loadavg() from the performance multiplier

Dominik Brodowski (1):
cpufreq: intel_pstate: Fix compilation for !CONFIG_ACPI

Sudeep Holla (2):
cpufreq: drop ARM_BIG_LITTLE_CPUFREQ support for ARM64
cpufreq: remove unused arm_big_little_dt driver

Vitaly Kuznetsov (1):
kernel: hung_task.c: disable on suspend


drivers/cpufreq/Kconfig.arm | 9 +---
drivers/cpufreq/Makefile | 3 --
drivers/cpufreq/arm_big_little_dt.c | 100 ------------------------------------
drivers/cpufreq/intel_pstate.c | 20 ++++----
drivers/cpuidle/governors/menu.c | 25 +++------
include/linux/sched/stat.h | 1 -
kernel/hung_task.c | 30 ++++++++++-
kernel/sched/core.c | 34 +++++-------
9 files changed, 60 insertions(+), 163 deletions(-)