[PATCH v2 0/4] cppc_cpufreq: fix, clarify and improve support

From: Ionela Voinescu
Date: Mon Dec 14 2020 - 07:39:52 EST


Hi guys,

I'm sending v2 of some of the patches at [1] in light of the discussions
at [2].

v2:
- Patches 1-3 are trivial rebase on linux next 20201211, with conflicts
fixed after eliminating what previously was "[PATCH 4/8] cppc_cpufreq:
replace per-cpu structures with lists." Therefore, I have kept
Viresh's acks.

- Patch 4 is a merge between:
- [PATCH 4/8] cppc_cpufreq: replace per-cpu structures with lists
- [PATCH] cppc_cpufreq: optimise memory allocation for HW and NONE
coordination
both found at [1].

This functionality was introducing the problem at [2] and it's fixed
in this version by bailing out of driver registration if a _CPC entry
is not found for a CPU.

Yousaf, it would be great if you can test this and make sure it
matches your expectations.

Rafael, Viresh if you think this last patch introduces too many
changes, you can skip it for 5.11 which is around the corner and
have more time for review for 5.12. I've added more eyes in the review
list.


All patches are based on linux next 20201211 after patch at [3] is
applied.

[1] https://lore.kernel.org/linux-pm/20201105125524.4409-1-ionela.voinescu@xxxxxxx/#t
[2] https://lore.kernel.org/linux-pm/20201210142139.20490-1-yousaf.kaukab@xxxxxxxx/
[3] https://lore.kernel.org/linux-pm/20201214120740.10948-1-ionela.voinescu@xxxxxxx/

Ionela Voinescu (4):
cppc_cpufreq: use policy->cpu as driver of frequency setting
cppc_cpufreq: clarify support for coordination types
cppc_cpufreq: expose information on frequency domains
cppc_cpufreq: replace per-cpu data array with a list

.../ABI/testing/sysfs-devices-system-cpu | 3 +-
drivers/acpi/cppc_acpi.c | 141 ++++++------
drivers/cpufreq/cppc_cpufreq.c | 204 ++++++++++--------
include/acpi/cppc_acpi.h | 6 +-
4 files changed, 181 insertions(+), 173 deletions(-)

--
2.29.2.dirty