Hi Linus,
Please pull from
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git \
pm-4.7-rc1
to receive the main part of power management material for v4.7-rc1
with top-most commit 27c4a1c5ef61b6d4a9aeae68b24419b4319b97ed
Merge branches 'pm-avs', 'pm-clk', 'powercap' and 'pm-tools'
on top of commit 44549e8f5eea4e0a41b487b63e616cb089922b99
Linux 4.6-rc7
The majority of changes go into the cpufreq subsystem this time.
To me, quite obviously, the biggest ticket item is the new "schedutil"
governor. Interestingly enough, it's the first new cpufreq governor
since the beginning of the git era (except for some out-of-the-tree
ones).
There are two main differences between it and the existing governors.
First, it uses the information provided by the scheduler directly for
making its decisions, so it doesn't have to track anything by itself.
Second, it can invoke drivers (supporting that feature) to adjust CPU
performance right away without having to spawn work items to be
executed in process context or similar. Currently, the acpi-cpufreq
driver is the only one supporting that mode of operation, but then it
is used on a large number of systems.
The "schedutil" governor as included here is very simple and mostly
regarded as a foundation for future work on the integration of
the scheduler with CPU power management (in fact, there is work
in progress on top of it already). Nevertheless it works and
the preliminary results obtained with it are encouraging.
There also is some consolidation of CPU frequency management for ARM
platforms that can add their machine IDs the the new stub dt-platdev
driver now and that will take care of creating the requisite platform
device for cpufreq-dt, so it is not necessary to do that in platform
code any more. Several ARM platforms are switched over to using this
generic mechanism.
In addition to that, the intel_pstate driver is now going to respect
CPU frequency limits set by the platform firmware (or a BMC) and
provided via the ACPI _PPC object.
The devfreq subsystem is getting a new "passive" governor for SoCs
subsystems that will depend on somebody else to manage their voltage
rails and its support for Samsung Exynos SoCs is consolidated.
The rest is support for new hardware (Intel Broxton support in
intel_idle for one example), bug fixes, optimizations and cleanups
in a number of places.
Specifics:
- New cpufreq "schedutil" governor (making decisions based on CPU
utilization information provided by the scheduler and capable of
switching CPU frequencies right away if the underlying driver
supports that) and support for fast frequency switching in the
acpi-cpufreq driver (Rafael Wysocki).
- Consolidation of CPU frequency management on ARM platforms allowing
them to get rid of some platform-specific boilerplate code if they
are going to use the cpufreq-dt driver (Viresh Kumar, Finley Xiao,
Marc Gonzalez).
- Support for ACPI _PPC and CPU frequency limits in the intel_pstate
driver (Srinivas Pandruvada).
- Fixes and cleanups in the cpufreq core and generic governor code
(Rafael Wysocki, Sai Gurrappadi).
- intel_pstate driver optimizations and cleanups (Rafael Wysocki,
Philippe Longepe, Chen Yu, Joe Perches).
- cpufreq powernv driver fixes and cleanups (Akshay Adiga, Shilpasri
Bhat).
- cpufreq qoriq driver fixes and cleanups (Jia Hongtao).
- ACPI cpufreq driver cleanups (Viresh Kumar).
- Assorted cpufreq driver updates (Ashwin Chaugule, Geliang Tang,
Javier Martinez Canillas, Paul Gortmaker, Sudeep Holla).
- Assorted cpufreq fixes and cleanups (Joe Perches, Arnd Bergmann).
- Fixes and cleanups in the OPP (Operating Performance Points)
framework, mostly related to OPP sharing, and reorganization of
OF-dependent code in it (Viresh Kumar, Arnd Bergmann, Sudeep Holla).
- New "passive" governor for devfreq (for SoC subsystems that will
rely on someone else for the management of their power resources)
and consolidation of devfreq support for Exynos platforms, coding
style and typo fixes for devfreq (Chanwoo Choi, MyungJoo Ham).
- PM core fixes and cleanups, mostly to make it work better with the
generic power domains (genpd) framework, and updates for that
framework (Ulf Hansson, Thierry Reding, Colin Ian King).
- Intel Broxton support for the intel_idle driver (Len Brown).
- cpuidle core optimization and fix (Daniel Lezcano, Dave Gerlach).
- ARM cpuidle cleanups (Jisheng Zhang).
- Intel Kabylake support for the RAPL power capping driver (Jacob Pan).
- AVS (Adaptive Voltage Switching) rockchip-io driver update (Heiko
Stuebner).
- Updates for the cpupower tool (Arjun Sreedharan, Colin Ian King,
Mattia Dongili, Thomas Renninger).
Thanks!
---------------
Akshay Adiga (3):
cpufreq: powernv: Ramp-down global pstate slower than local-pstate
cpufreq: powernv: Move smp_call_function_any() out of irq safe block
cpufreq: powernv: del_timer_sync when global and local pstate are equal
Arjun Sreedharan (1):
cpupower: fix potential memory leak
Arnd Bergmann (2):
PM / OPP: pass cpumask by reference
cpufreq: schedutil: Make default depend on CONFIG_SMP
Ashwin Chaugule (1):
cpufreq: ACPI / CPPC: Add module support for cppc_cpufreq driver
Chanwoo Choi (13):
PM / devfreq: exynos: Add generic exynos bus frequency driver
PM / devfreq: exynos: Add documentation for generic exynos bus
frequency driver
PM / devfreq: Add devfreq_get_devfreq_by_phandle()
PM / devfreq: Add new DEVFREQ_TRANSITION_NOTIFIER notifier
PM / devfreq: Add new passive governor
PM / devfreq: exynos: Add support of bus frequency of sub-blocks
using passive governor
PM / devfreq: exynos: Update documentation for bus devices using
passive governor
PM / devfreq: exynos: Add the detailed correlation between
sub-blocks and power line
PM / devfreq: exynos: Remove unused exynos4/5 busfreq driver
MAINTAINERS: Add samsung bus frequency driver entry
PM / devfreq: event: Add new Exynos NoC probe driver
PM / devfreq: event: Find the instance of devfreq-event device
by using phandle
PM / devfreq: exynos: Add the detailed correlation for Exynos5422 bus
Chen Yu (1):
intel_pstate: Avoid unnecessary synchronize_sched() during initialization
Colin Ian King (3):
PM / clk: ensure we don't allocate a -ve size of count clks
cpupower: bench: parse.c: fix several resource leaks
cpupowerutils: bench: trivial fix of spelling mistake on "average"
Daniel Lezcano (1):
cpuidle: Replace ktime_get() with local_clock()
Dave Gerlach (1):
cpuidle: Indicate when a device has been unregistered
Finley Xiao (1):
cpufreq: rockchip: Use generic platdev driver
Geliang Tang (1):
cpufreq: mt8173: use list_for_each_entry*()
Heiko Stuebner (1):
PM / AVS: rockchip-io: make io-domains a child of the GRF
Jacob Pan (1):
powercap/intel_rapl: Add support for Kabylake
Javier Martinez Canillas (1):
cpufreq: e_powersaver: Use IS_ENABLED() instead of checking for
built-in or module
Jia Hongtao (3):
cpufreq: qoriq: Don't show cooling device messages if THERMAL_OF undefined
cpufreq: qoriq: Remove __exit macro from .exit callback
cpufreq: qoriq: Fix cooling device registration issue during suspend
Jisheng Zhang (4):
ARM: cpuidle: add const qualifier to cpuidle_ops member in structures
ARM: cpuidle: constify return value of arm_cpuidle_get_ops()
soc: qcom: spm: Use const and __initconst for qcom_cpuidle_ops
drivers: firmware: psci: use const and __initconst for psci_cpuidle_ops
Joe Perches (3):
intel_pstate: Use pr_fmt
cpufreq: Convert printk(KERN_<LEVEL> to pr_<level>
cpufreq: Use consistent prefixing via pr_fmt
Len Brown (1):
intel_idle: add BXT support
Marc Gonzalez (1):
cpufreq: tango: Use generic platdev driver
Mattia Dongili (2):
Honour user's LDFLAGS
Fix cpupower manpages "NAME" section
MyungJoo Ham (1):
PM / devfreq: style/typo fixes
Paul Gortmaker (1):
cpufreq: ppc_cbe_cpufreq_pmi: make the driver explicitly non-modular
Philippe Longepe (1):
cpufreq: intel_pstate: Use average P-State instead of current P-State
Rafael J. Wysocki (19):
cpufreq: sched: Helpers to add and remove update_util hooks
cpufreq: governor: New data type for management part of dbs_data
cpufreq: governor: Move abstract gov_attr_set code to seperate file
cpufreq: Move governor attribute set headers to cpufreq.h
cpufreq: Move governor symbols to cpufreq.h
cpufreq: Support for fast frequency switching
cpufreq: schedutil: New governor based on scheduler utilization data
cpufreq: Call cpufreq_disable_fast_switch() in sugov_exit()
intel_pstate: Avoid pointless FRAC_BITS shifts under div_fp()
cpufreq: Simplify switch () in cpufreq_cpu_callback()
cpufreq: Rearrange cpufreq_add_dev()
cpufreq: governor: Fix prev_load initialization in
cpufreq_governor_start()
cpufreq: governor: Change confusing struct field and variable names
cpufreq: governor: Fix handling of special cases in dbs_update()
cpufreq: schedutil: Make it depend on CONFIG_SMP
intel_pstate: Clean up intel_pstate_get()
intel_pstate: Clarify average performance computation
intel_pstate: Use sample.core_avg_perf in get_avg_pstate()
intel_pstate: Clean up get_target_pstate_use_performance()
Sai Gurrappadi (1):
cpufreq: Fix GOV_LIMITS handling for the userspace governor
Shilpasri G Bhat (1):
cpufreq: powernv: Remove flag use-case of policy->driver_data
Srinivas Pandruvada (4):
cpufreq: intel_pstate: Enforce _PPC limits
cpufreq: intel_pstate: Adjust policy->max
cpufreq: intel_pstate: Enable PPC enforcement for servers
cpufreq: intel_pstate: Ignore _PPC processing under HWP
Sudeep Holla (2):
PM / OPP: add non-OF versions of dev_pm_opp_{cpumask_, }remove_table
cpufreq: arm_big_little: use generic OPP functions for {init,
free}_opp_table
Thierry Reding (1):
PM / sleep: Drop unused `info' variable
Thomas Renninger (1):
cpupower: Add cpuidle parts into library
Ulf Hansson (7):
PM / Runtime: Fix error path in pm_runtime_force_resume()
PM / Runtime: Move ignore_children flag under CONFIG_PM
PM / Domains: Rename stop_ok to suspend_ok for the genpd governor
PM / Domains: Rename pm_genpd_runtime_suspend|resume()
PM / Domains: Remove ->save|restore_state() callbacks
PM / Domains: Remove redundant pm_runtime_get|put*() in pm_genpd_prepare()
PM / Domains: Drop unnecessary wakeup code from pm_genpd_prepare()
Viresh Kumar (28):
cpufreq: tegra124: No need of setting platform-data
cpufreq: dt: Include types.h from cpufreq-dt.h
cpufreq: dt: Add generic platform-device creation support
ARM: exynos: exynos-cpufreq platform device isn't supported anymore
cpufreq: exynos: Use generic platdev driver
cpufreq: ACPI: policy->driver_data can't be NULL in ->exit()
cpufreq: ACPI: Remove freq_table from acpi_cpufreq_data
PM / OPP: Propagate the error returned by _find_opp_table()
PM / OPP: Add missing doc style comments
PM / OPP: dev_pm_opp_set_sharing_cpus() doesn't depend on CONFIG_OF
PM / OPP: Relocate dev_pm_opp_set_sharing_cpus()
PM / OPP: Mark shared-opp for non-dt case
cpufreq: dt: Mark platdev machines array as __initconst
cpufreq: berlin: Use generic platdev driver
cpufreq: imx: Use generic platdev driver
cpufreq: omap: Use generic platdev driver
cpufreq: shmobile: Use generic platdev driver
cpufreq: sunxi: Use generic platdev driver
cpufreq: zynq: Use generic platdev driver
cpufreq: hisilicon: Use generic platdev driver
PM / OPP: -ENOSYS is applicable only to syscalls
PM / OPP: Mark cpumask as const in dev_pm_opp_set_sharing_cpus()
PM / OPP: Add dev_pm_opp_get_sharing_cpus()
cpufreq: dt: Identify cpu-sharing for platforms without
operating-points-v2
mvebu: Use dev_pm_opp_set_sharing_cpus() to mark OPP tables as shared
cpufreq: dt: Kill platform-data
cpufreq: mvebu: Move cpufreq code into drivers/cpufreq/
PM / OPP: Move CONFIG_OF dependent code in a separate file
---------------
.../bindings/devfreq/event/exynos-nocp.txt | 26 +
.../devicetree/bindings/devfreq/exynos-bus.txt | 409 ++++++++
.../bindings/power/rockchip-io-domain.txt | 4 +-
Documentation/kernel-parameters.txt | 5 +
MAINTAINERS | 10 +
arch/arm/include/asm/cpuidle.h | 2 +-
arch/arm/kernel/cpuidle.c | 6 +-
arch/arm/mach-berlin/berlin.c | 6 -
arch/arm/mach-exynos/exynos.c | 29 -
arch/arm/mach-imx/imx27-dt.c | 10 -
arch/arm/mach-imx/mach-imx51.c | 3 -
arch/arm/mach-imx/mach-imx53.c | 2 -
arch/arm/mach-imx/mach-imx7d.c | 6 -
arch/arm/mach-mvebu/pmsu.c | 85 --
arch/arm/mach-omap2/pm.c | 7 +-
arch/arm/mach-rockchip/rockchip.c | 1 -
arch/arm/mach-shmobile/Makefile | 1 -
arch/arm/mach-shmobile/common.h | 7 -
arch/arm/mach-shmobile/cpufreq.c | 19 -
arch/arm/mach-sunxi/sunxi.c | 9 -
arch/arm/mach-zynq/common.c | 2 -
drivers/base/power/clock_ops.c | 2 +-
drivers/base/power/domain.c | 145 ++-
drivers/base/power/domain_governor.c | 20 +-
drivers/base/power/main.c | 18 +-
drivers/base/power/opp/Makefile | 1 +
drivers/base/power/opp/core.c | 440 +-------
drivers/base/power/opp/cpu.c | 199 ++--
drivers/base/power/opp/of.c | 591 +++++++++++
drivers/base/power/opp/opp.h | 14 +
drivers/base/power/runtime.c | 9 +-
drivers/cpufreq/Kconfig | 45 +
drivers/cpufreq/Kconfig.arm | 9 -
drivers/cpufreq/Kconfig.x86 | 1 +
drivers/cpufreq/Makefile | 4 +-
drivers/cpufreq/acpi-cpufreq.c | 129 ++-
drivers/cpufreq/arm_big_little.c | 54 +-
drivers/cpufreq/arm_big_little.h | 4 +-
drivers/cpufreq/arm_big_little_dt.c | 21 +-
drivers/cpufreq/cppc_cpufreq.c | 21 +
drivers/cpufreq/cpufreq-dt-platdev.c | 94 ++
drivers/cpufreq/cpufreq-dt.c | 22 +-
drivers/cpufreq/cpufreq-nforce2.c | 28 +-
drivers/cpufreq/cpufreq.c | 164 ++-
drivers/cpufreq/cpufreq_conservative.c | 25 +-
drivers/cpufreq/cpufreq_governor.c | 271 +++--
drivers/cpufreq/cpufreq_governor.h | 46 +-
drivers/cpufreq/cpufreq_governor_attr_set.c | 84 ++
drivers/cpufreq/cpufreq_ondemand.c | 29 +-
drivers/cpufreq/cpufreq_userspace.c | 43 +-
drivers/cpufreq/e_powersaver.c | 76 +-
drivers/cpufreq/elanfreq.c | 4 +-
drivers/cpufreq/hisi-acpu-cpufreq.c | 42 -
drivers/cpufreq/ia64-acpi-cpufreq.c | 10 +-
drivers/cpufreq/intel_pstate.c | 303 ++++--
drivers/cpufreq/longhaul.c | 84 +-
drivers/cpufreq/loongson2_cpufreq.c | 7 +-
drivers/cpufreq/maple-cpufreq.c | 11 +-
drivers/cpufreq/mt8173-cpufreq.c | 14 +-
drivers/cpufreq/mvebu-cpufreq.c | 107 ++
drivers/cpufreq/omap-cpufreq.c | 7 +-
drivers/cpufreq/p4-clockmod.c | 19 +-
drivers/cpufreq/pmac32-cpufreq.c | 14 +-
drivers/cpufreq/pmac64-cpufreq.c | 47 +-
drivers/cpufreq/powernow-k6.c | 16 +-
drivers/cpufreq/powernow-k7.c | 70 +-
drivers/cpufreq/powernv-cpufreq.c | 272 ++++-
drivers/cpufreq/ppc_cbe_cpufreq.h | 2 +-
drivers/cpufreq/ppc_cbe_cpufreq_pmi.c | 15 +-
drivers/cpufreq/pxa2xx-cpufreq.c | 18 +-
drivers/cpufreq/qoriq-cpufreq.c | 9 +-
drivers/cpufreq/s3c2412-cpufreq.c | 15 +-
drivers/cpufreq/s3c2440-cpufreq.c | 6 +-
drivers/cpufreq/s3c24xx-cpufreq-debugfs.c | 4 +-
drivers/cpufreq/s3c24xx-cpufreq.c | 59 +-
drivers/cpufreq/s5pv210-cpufreq.c | 10 +-
drivers/cpufreq/sc520_freq.c | 10 +-
drivers/cpufreq/scpi-cpufreq.c | 47 +-
drivers/cpufreq/speedstep-centrino.c | 6 +-
drivers/cpufreq/speedstep-ich.c | 8 +-
drivers/cpufreq/speedstep-lib.c | 11 +-
drivers/cpufreq/speedstep-smi.c | 7 +-
drivers/cpufreq/tegra124-cpufreq.c | 7 -
drivers/cpufreq/vexpress-spc-cpufreq.c | 4 +-
drivers/cpuidle/cpuidle.c | 14 +-
drivers/devfreq/Kconfig | 36 +-
drivers/devfreq/Makefile | 4 +-
drivers/devfreq/devfreq-event.c | 5 +
drivers/devfreq/devfreq.c | 207 +++-
drivers/devfreq/event/Kconfig | 8 +
drivers/devfreq/event/Makefile | 2 +
drivers/devfreq/event/exynos-nocp.c | 304 ++++++
drivers/devfreq/event/exynos-nocp.h | 78 ++
drivers/devfreq/exynos-bus.c | 570 +++++++++++
drivers/devfreq/exynos/Makefile | 3 -
drivers/devfreq/exynos/exynos4_bus.c | 1055 --------------------
drivers/devfreq/exynos/exynos4_bus.h | 110 --
drivers/devfreq/exynos/exynos5_bus.c | 431 --------
drivers/devfreq/exynos/exynos_ppmu.c | 119 ---
drivers/devfreq/exynos/exynos_ppmu.h | 86 --
drivers/devfreq/governor_passive.c | 205 ++++
drivers/firmware/psci.c | 2 +-
drivers/idle/intel_idle.c | 137 +++
drivers/mmc/host/toshsd.c | 1 +
drivers/power/avs/rockchip-io-domain.c | 10 +-
drivers/powercap/intel_rapl.c | 2 +
drivers/soc/qcom/spm.c | 2 +-
include/linux/cpufreq-dt.h | 22 -
include/linux/cpufreq.h | 54 +
include/linux/devfreq.h | 99 ++
include/linux/device.h | 5 -
include/linux/pm.h | 2 +-
include/linux/pm_domain.h | 6 +-
include/linux/pm_opp.h | 62 +-
include/linux/pm_runtime.h | 6 +
include/linux/sched.h | 5 +-
kernel/sched/Makefile | 1 +
kernel/sched/cpufreq.c | 48 +-
kernel/sched/cpufreq_schedutil.c | 530 ++++++++++
kernel/sched/sched.h | 8 +
kernel/trace/power-traces.c | 1 +
tools/power/cpupower/Makefile | 12 +-
tools/power/cpupower/bench/Makefile | 2 +-
tools/power/cpupower/bench/README-BENCH | 2 +-
tools/power/cpupower/bench/benchmark.c | 4 +-
tools/power/cpupower/bench/parse.c | 20 +-
tools/power/cpupower/bench/system.c | 3 +-
tools/power/cpupower/lib/cpufreq.c | 550 +++++++++-
tools/power/cpupower/lib/cpufreq.h | 59 +-
tools/power/cpupower/lib/cpuidle.c | 380 +++++++
tools/power/cpupower/lib/cpuidle.h | 23 +
tools/power/cpupower/lib/cpupower.c | 192 ++++
tools/power/cpupower/lib/cpupower.h | 35 +
tools/power/cpupower/lib/cpupower_intern.h | 5 +
tools/power/cpupower/lib/sysfs.c | 672 -------------
tools/power/cpupower/lib/sysfs.h | 31 -
tools/power/cpupower/man/cpupower-frequency-info.1 | 2 +-
tools/power/cpupower/man/cpupower-frequency-set.1 | 2 +-
tools/power/cpupower/man/cpupower-idle-info.1 | 2 +-
tools/power/cpupower/man/cpupower-idle-set.1 | 2 +-
tools/power/cpupower/utils/cpufreq-set.c | 8 +-
tools/power/cpupower/utils/cpuidle-info.c | 32 +-
tools/power/cpupower/utils/cpuidle-set.c | 26 +-
tools/power/cpupower/utils/helpers/helpers.h | 26 +-
tools/power/cpupower/utils/helpers/topology.c | 107 +-
.../cpupower/utils/idle_monitor/cpuidle_sysfs.c | 12 +-
146 files changed, 6477 insertions(+), 4495 deletions(-)
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