lkml.org 
[lkml]   [2018]   [Oct]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v9 00/11] PM / Domains: Support hierarchical CPU arrangement (PSCI/ARM) (a subset)
Date
I have digested the review comments so far, including a recent offlist chat
with with Lorenzo Pieralisi around the debatable PSCI changes. More or less I
have a plan for how to move forward.

However, to avoid re-posting non-changed patches over and over again, I decided
to withhold the more debatable part from this v9, hence this is not the complete
series to make things play. In v9, I have just included the trivial changes,
which are either already acked/reviewed or hopefully can be rather soon/easily.

My hope is to get this queued for v4.20, to move things forward. I know it's
late, but there are more or less nothing new here since v8.

Kind regards
Ulf Hansson

Changes in v9:
- Collect only a subset from the changes in v8.
- Patch 3 is new, documenting existing genpd flags. Future wise, this means
when a new genpd flag is invented, we must also properly document it.
- No changes have been made to the patches picked from v8.
- Dropped the text from v8 cover-letter[1], to avoid confusion. When posting v10
(or whatever the next version containing the rest becomes), I am going re-write
the cover-letter to clarify, more exactly, the problems this series intends to
solve. The earlier text was simply too vague.

[1]
https://lwn.net/Articles/758091/

Changes in v8:
- Added some tags for reviews and acks.
- Cleanup timer patch (patch6) according to comments from Rafael.
- Rebased series on top of v4.18rc1 - it applied cleanly, except for patch 5.
- While adopting patch 5 to new genpd changes, I took the opportunity to
improve the new function description a bit.
- Corrected malformed SPDX-License-Identifier in patch20.

Changes in v7:
- Addressed comments concerning the PSCI changes from Mark Rutland, which moves
the psci firmware driver to a new firmware subdir and change to force PSCI PC
mode during boot to cope with kexec'ed booted kernels.
- Added some maintainers in cc for the timer/nohz patches.
- Minor update to the new genpd governor, taking into account the state's
poweroff latency while validating the sleep duration time.
- Addressed a problem pointed out by Geert Uytterhoeven, around calling
pm_runtime_get|put() for CPUs that has not been attached to a CPU PM domain.
- Re-based on Linus' latest master.


Lina Iyer (3):
dt: psci: Update DT bindings to support hierarchical PSCI states
cpuidle: dt: Support hierarchical CPU idle states
drivers: firmware: psci: Support hierarchical CPU idle states

Ulf Hansson (8):
PM / Domains: Don't treat zero found compatible idle states as an
error
PM / Domains: Deal with multiple states but no governor in genpd
PM / Domains: Document flags for genpd
of: base: Add of_get_cpu_state_node() to get idle states for a CPU
node
drivers: firmware: psci: Move psci to separate directory
MAINTAINERS: Update files for PSCI
drivers: firmware: psci: Split psci_dt_cpu_init_idle()
drivers: firmware: psci: Simplify error path of psci_dt_init()

.../devicetree/bindings/arm/psci.txt | 156 ++++++++++++++++++
MAINTAINERS | 2 +-
drivers/base/power/domain.c | 20 ++-
drivers/cpuidle/dt_idle_states.c | 5 +-
drivers/firmware/Kconfig | 15 +-
drivers/firmware/Makefile | 3 +-
drivers/firmware/psci/Kconfig | 13 ++
drivers/firmware/psci/Makefile | 4 +
drivers/firmware/{ => psci}/psci.c | 70 ++++----
drivers/firmware/{ => psci}/psci_checker.c | 0
drivers/of/base.c | 35 ++++
include/linux/of.h | 8 +
include/linux/pm_domain.h | 35 +++-
13 files changed, 302 insertions(+), 64 deletions(-)
create mode 100644 drivers/firmware/psci/Kconfig
create mode 100644 drivers/firmware/psci/Makefile
rename drivers/firmware/{ => psci}/psci.c (95%)
rename drivers/firmware/{ => psci}/psci_checker.c (100%)

--
2.17.1

\
 
 \ /
  Last update: 2018-10-03 16:39    [W:0.259 / U:0.340 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site