Pull scheduler updates from Ingo Molnar:
"The main changes in this cycle were:
- Optimized support for Intel "Cluster-on-Die" (CoD) topologies (Dave
Hansen)
- Various sched/idle refinements for better idle handling (Nicolas
Pitre, Daniel Lezcano, Chuansheng Liu, Vincent Guittot)
- sched/numa updates and optimizations (Rik van Riel)
- sysbench speedup (Vincent Guittot)
- capacity calculation cleanups/refactoring (Vincent Guittot)
- Various cleanups to thread group iteration (Oleg Nesterov)
- Double-rq-lock removal optimization and various refactorings
(Kirill Tkhai)
- various sched/deadline fixes
... and lots of other changes"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (72 commits)
sched/dl: Use dl_bw_of() under rcu_read_lock_sched()
sched/fair: Delete resched_cpu() from idle_balance()
sched, time: Fix build error with 64 bit cputime_t on 32 bit systems
sched: Improve sysbench performance by fixing spurious active migration
sched/x86: Fix up typo in topology detection
x86, sched: Add new topology for multi-NUMA-node CPUs
sched/rt: Use resched_curr() in task_tick_rt()
sched: Use rq->rd in sched_setaffinity() under RCU read lock
sched: cleanup: Rename 'out_unlock' to 'out_free_new_mask'
sched: Use dl_bw_of() under RCU read lock
sched/fair: Remove duplicate code from can_migrate_task()
sched, mips, ia64: Remove __ARCH_WANT_UNLOCKED_CTXSW
sched: print_rq(): Don't use tasklist_lock
sched: normalize_rt_tasks(): Don't use _irqsave for tasklist_lock, use task_rq_lock()
sched: Fix the task-group check in tg_has_rt_tasks()
sched/fair: Leverage the idle state info when choosing the "idlest" cpu
sched: Let the scheduler see CPU idle states
sched/deadline: Fix inter- exclusive cpusets migrations
sched/deadline: Clear dl_entity params when setscheduling to different class
sched/numa: Kill the wrong/dead TASK_DEAD check in task_numa_fault()
...
- Rework the handling of wakeup IRQs by the IRQ core such that
all of them will be switched over to "wakeup" mode in
suspend_device_irqs() and in that mode the first interrupt
will abort system suspend in progress or wake up the system
if already in suspend-to-idle (or equivalent) without executing
any interrupt handlers. Among other things that eliminates the
wakeup-related motivation to use the IRQF_NO_SUSPEND interrupt
flag with interrupts which don't really need it and should not
use it (Thomas Gleixner and Rafael J Wysocki).
- Switch over ACPI to handling wakeup interrupts with the help
of the new mechanism introduced by the above IRQ core rework
(Rafael J Wysocki).
- Rework the core generic PM domains code to eliminate code that's
not used, add DT support and add a generic mechanism by which
devices can be added to PM domains automatically during
enumeration (Ulf Hansson, Geert Uytterhoeven and Tomasz Figa).
- Add debugfs-based mechanics for debugging generic PM domains
(Maciej Matraszek).
- ACPICA update to upstream version 20140828. Included are updates
related to the SRAT and GTDT tables and the _PSx methods are in
the METHOD_NAME list now (Bob Moore and Hanjun Guo).
- Add _OSI("Darwin") support to the ACPI core (unfortunately, that
can't really be done in a straightforward way) to prevent
Thunderbolt from being turned off on Apple systems after boot
(or after resume from system suspend) and rework the ACPI Smart
Battery Subsystem (SBS) driver to work correctly with Apple
platforms (Matthew Garrett and Andreas Noever).
- ACPI LPSS (Low-Power Subsystem) driver update cleaning up the
code, adding support for 133MHz I2C source clock on Intel Baytrail
to it and making it avoid using UART RTS override with Auto Flow
Control (Heikki Krogerus).
- ACPI backlight updates removing the video_set_use_native_backlight
quirk which is not necessary any more, making the code check the
list of output devices returned by the _DOD method to avoid
creating acpi_video interfaces that won't work and adding a quirk
for Lenovo Ideapad Z570 (Hans de Goede, Aaron Lu and Stepan Bujnak).
- New Win8 ACPI OSI quirks for some Dell laptops (Edward Lin).
- Assorted ACPI code cleanups (Fabian Frederick, Rasmus Villemoes,
Sudip Mukherjee, Yijing Wang, and Zhang Rui).
- cpufreq core updates and cleanups (Viresh Kumar, Preeti U Murthy,
Rasmus Villemoes).
- cpufreq driver updates: cpufreq-cpu0/cpufreq-dt (driver name
change among other things), ppc-corenet, powernv (Viresh Kumar,
Preeti U Murthy, Shilpasri G Bhat, Lucas Stach).
- cpuidle support for DT-based idle states infrastructure, new
ARM64 cpuidle driver, cpuidle core cleanups (Lorenzo Pieralisi,
Rasmus Villemoes).
- ARM big.LITTLE cpuidle driver updates: support for DT-based
initialization and Exynos5800 compatible string (Lorenzo Pieralisi,
Kevin Hilman).
- Rework of the test_suspend kernel command line argument and
a new trace event for console resume (Srinivas Pandruvada,
Todd E Brandt).
- Second attempt to optimize swsusp_free() (hibernation core) to
make it avoid going through all PFNs which may be way too slow on
some systems (Joerg Roedel).
- devfreq updates (Paul Bolle, Punit Agrawal, Ãrjan Eide).
- rockchip-io Adaptive Voltage Scaling (AVS) driver and AVS
entry update in MAINTAINERS (Heiko Stübner, Kevin Hilman).
- PM core fix related to clock management (Geert Uytterhoeven).
- PM core's sysfs code cleanup (Johannes Berg).
/
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Merge tag 'pm+acpi-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki:
"Features-wise, to me the most important this time is a rework of
wakeup interrupts handling in the core that makes them work
consistently across all of the available sleep states, including
suspend-to-idle. Many thanks to Thomas Gleixner for his help with
this work.
Second is an update of the generic PM domains code that has been in
need of some care for quite a while. Unused code is being removed, DT
support is being added and domains are now going to be attached to
devices in bus type code in analogy with the ACPI PM domain. The
majority of work here was done by Ulf Hansson who also has been the
most active developer this time.
Apart from this we have a traditional ACPICA update, this time to
upstream version 20140828 and a few ACPI wakeup interrupts handling
patches on top of the general rework mentioned above. There also are
several cpufreq commits including renaming the cpufreq-cpu0 driver to
cpufreq-dt, as this is what implements generic DT-based cpufreq
support, and a new DT-based idle states infrastructure for cpuidle.
In addition to that, the ACPI LPSS driver is updated, ACPI support for
Apple machines is improved, a few bugs are fixed and a few cleanups
are made all over.
Finally, the Adaptive Voltage Scaling (AVS) subsystem now has a tree
maintained by Kevin Hilman that will be merged through the PM tree.
Numbers-wise, the generic PM domains update takes the lead this time
with 32 non-merge commits, second is cpufreq (15 commits) and the 3rd
place goes to the wakeup interrupts handling rework (13 commits).
Specifics:
- Rework the handling of wakeup IRQs by the IRQ core such that all of
them will be switched over to "wakeup" mode in suspend_device_irqs()
and in that mode the first interrupt will abort system suspend in
progress or wake up the system if already in suspend-to-idle (or
equivalent) without executing any interrupt handlers. Among other
things that eliminates the wakeup-related motivation to use the
IRQF_NO_SUSPEND interrupt flag with interrupts which don't really
need it and should not use it (Thomas Gleixner and Rafael Wysocki)
- Switch over ACPI to handling wakeup interrupts with the help of the
new mechanism introduced by the above IRQ core rework (Rafael Wysocki)
- Rework the core generic PM domains code to eliminate code that's
not used, add DT support and add a generic mechanism by which
devices can be added to PM domains automatically during enumeration
(Ulf Hansson, Geert Uytterhoeven and Tomasz Figa).
- Add debugfs-based mechanics for debugging generic PM domains
(Maciej Matraszek).
- ACPICA update to upstream version 20140828. Included are updates
related to the SRAT and GTDT tables and the _PSx methods are in the
METHOD_NAME list now (Bob Moore and Hanjun Guo).
- Add _OSI("Darwin") support to the ACPI core (unfortunately, that
can't really be done in a straightforward way) to prevent
Thunderbolt from being turned off on Apple systems after boot (or
after resume from system suspend) and rework the ACPI Smart Battery
Subsystem (SBS) driver to work correctly with Apple platforms
(Matthew Garrett and Andreas Noever).
- ACPI LPSS (Low-Power Subsystem) driver update cleaning up the code,
adding support for 133MHz I2C source clock on Intel Baytrail to it
and making it avoid using UART RTS override with Auto Flow Control
(Heikki Krogerus).
- ACPI backlight updates removing the video_set_use_native_backlight
quirk which is not necessary any more, making the code check the
list of output devices returned by the _DOD method to avoid
creating acpi_video interfaces that won't work and adding a quirk
for Lenovo Ideapad Z570 (Hans de Goede, Aaron Lu and Stepan Bujnak)
- New Win8 ACPI OSI quirks for some Dell laptops (Edward Lin)
- Assorted ACPI code cleanups (Fabian Frederick, Rasmus Villemoes,
Sudip Mukherjee, Yijing Wang, and Zhang Rui)
- cpufreq core updates and cleanups (Viresh Kumar, Preeti U Murthy,
Rasmus Villemoes)
- cpufreq driver updates: cpufreq-cpu0/cpufreq-dt (driver name change
among other things), ppc-corenet, powernv (Viresh Kumar, Preeti U
Murthy, Shilpasri G Bhat, Lucas Stach)
- cpuidle support for DT-based idle states infrastructure, new ARM64
cpuidle driver, cpuidle core cleanups (Lorenzo Pieralisi, Rasmus
Villemoes)
- ARM big.LITTLE cpuidle driver updates: support for DT-based
initialization and Exynos5800 compatible string (Lorenzo Pieralisi,
Kevin Hilman)
- Rework of the test_suspend kernel command line argument and a new
trace event for console resume (Srinivas Pandruvada, Todd E Brandt)
- Second attempt to optimize swsusp_free() (hibernation core) to make
it avoid going through all PFNs which may be way too slow on some
systems (Joerg Roedel)
- devfreq updates (Paul Bolle, Punit Agrawal, Ãrjan Eide).
- rockchip-io Adaptive Voltage Scaling (AVS) driver and AVS entry
update in MAINTAINERS (Heiko Stübner, Kevin Hilman)
- PM core fix related to clock management (Geert Uytterhoeven)
- PM core's sysfs code cleanup (Johannes Berg)"
* tag 'pm+acpi-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (105 commits)
ACPI / fan: printk replacement
PM / clk: Fix crash in clocks management code if !CONFIG_PM_RUNTIME
PM / Domains: Rename cpu_data to cpuidle_data
cpufreq: cpufreq-dt: fix potential double put of cpu OF node
cpufreq: cpu0: rename driver and internals to 'cpufreq_dt'
PM / hibernate: Iterate over set bits instead of PFNs in swsusp_free()
cpufreq: ppc-corenet: remove duplicate update of cpu_data
ACPI / sleep: Rework the handling of ACPI GPE wakeup from suspend-to-idle
PM / sleep: Rename platform suspend/resume functions in suspend.c
PM / sleep: Export dpm_suspend_late/noirq() and dpm_resume_early/noirq()
ACPICA: Introduce acpi_enable_all_wakeup_gpes()
ACPICA: Clear all non-wakeup GPEs in acpi_hw_enable_wakeup_gpe_block()
ACPI / video: check _DOD list when creating backlight devices
PM / Domains: Move dev_pm_domain_attach|detach() to pm_domain.h
cpufreq: Replace strnicmp with strncasecmp
cpufreq: powernv: Set the cpus to nominal frequency during reboot/kexec
cpufreq: powernv: Set the pstate of the last hotplugged out cpu in policy->cpus to minimum
cpufreq: Allow stop CPU callback to be used by all cpufreq drivers
PM / devfreq: exynos: Enable building exynos PPMU as module
PM / devfreq: Export helper functions for drivers
...
New and updated SoC support. Among the things new for this release are:
- at91: Added support for the new SAMA5D4 SoC, following the earlier SAMA5D3
- bcm: Added support for BCM63XX family of DSL SoCs
- hisi: Added support for HiP04 server-class SoC
- meson: Initial support for the Amlogic Meson6 (aka 8726MX) platform
- shmobile: added support for new r8a7794 (R-Car E2) automotive SoC
Noteworthy changes to existing SoC support are:
- imx: convert i.MX1 to device tree
- omap: lots of power management work
- omap: base support to enable moving to standard UART driver
- shmobile: lots of progress for multiplatform support, still ongoing
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Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform changes from Arnd Bergmann:
"New and updated SoC support. Among the things new for this release
are:
- at91: Added support for the new SAMA5D4 SoC, following the earlier
SAMA5D3
- bcm: Added support for BCM63XX family of DSL SoCs
- hisi: Added support for HiP04 server-class SoC
- meson: Initial support for the Amlogic Meson6 (aka 8726MX) platform
- shmobile: added support for new r8a7794 (R-Car E2) automotive SoC
Noteworthy changes to existing SoC support are:
- imx: convert i.MX1 to device tree
- omap: lots of power management work
- omap: base support to enable moving to standard UART driver
- shmobile: lots of progress for multiplatform support, still
ongoing"
* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (171 commits)
ARM: hisi: depend on ARCH_MULTI_V7
CNS3xxx: Fix debug UART.
ARM: at91: fix nommu build regression
ARM: meson: add basic support for MesonX SoCs
ARM: meson: debug: add debug UART for earlyprintk support
irq: Export handle_fasteoi_irq
ARM: mediatek: Add earlyprintk support for mt6589
ARM: hisi: Fix platmcpm compilation when ARMv6 is selected
ARM: debug: fix alphanumerical order on debug uarts
ARM: at91: document Atmel SMART compatibles
ARM: at91: add sama5d4 support to sama5_defconfig
ARM: at91: dt: add device tree file for SAMA5D4ek board
ARM: at91: dt: add device tree file for SAMA5D4 SoC
ARM: at91: SAMA5D4 SoC detection code and low level routines
ARM: at91: introduce basic SAMA5D4 support
clk: at91: add a driver for the h32mx clock
ARM: pxa3xx: provide specific platform_devices for all ssp ports
ARM: pxa: ssp: provide platform_device_id for PXA3xx
ARM: OMAP4+: Remove static iotable mappings for SRAM
ARM: OMAP4+: Move SRAM data to DT
...
Pull ARM cpuidle changes for v3.18 from Daniel Lezcano:
"this pull request contains the following changes:
* Lorenzo Pieralisi implemented a framework to initialize the ARM
cpuidle drivers with the DT. As an example, it provided a couple of
drivers using it: arm64 and big little. The former one is a new
driver while the latter is a change. There was also a patch for
Exynos allowing to use this framework but as it depends on a change
in Samsung's tree, I postponed this patch until the change is visible
after the merge. The set of changes depends on some other changes
made in the ARM64 tree, for this reason a shared branch is used. This
is why there is a merge from arm64 in my pull request. I believe we
already used this procedure.
* Kevin Hilman added the compatible string for the exynos 5800 in the DT"
* 'cpuidle/3.18' of https://git.linaro.org/people/daniel.lezcano/linux:
drivers: cpuidle: initialize big.LITTLE driver through DT
drivers: cpuidle: CPU idle ARM64 driver
drivers: cpuidle: implement DT based idle states infrastructure
cpuidle: big.LITTLE: add Exynos5800 compatible string
arm64: add PSCI CPU_SUSPEND based cpu_suspend support
arm64: kernel: introduce cpu_init_idle CPU operation
arm64: kernel: refactor the CPU suspend API for retention states
Documentation: arm: define DT idle states bindings
With the introduction of DT based idle states, CPUidle drivers for ARM
can now initialize idle states data through properties in the device tree.
This patch adds code to the big.LITTLE CPUidle driver to dynamically
initialize idle states data through the updated device tree source file.
Cc: Chander Kashyap <k.chander@samsung.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This patch implements a generic CPU idle driver for ARM64 machines.
It relies on the DT idle states infrastructure to initialize idle
states count and respective parameters. Current code assumes the driver
is managing idle states on all possible CPUs but can be easily
generalized to support heterogenous systems and build cpumasks at
runtime using MIDRs or DT cpu nodes compatible properties.
The driver relies on the arm64 CPU operations to call the idle
initialization hook used to parse and save suspend back-end specific
idle states information upon probing.
Idle state index 0 is always initialized as a simple wfi state, ie always
considered present and functional on all ARM64 platforms.
Idle state indices higher than 0 trigger idle state entry by calling
the cpu_suspend function, that triggers the suspend operation through
the CPU operations suspend back-end hook. cpu_suspend passes the idle
state index as a parameter so that the CPU operations suspend back-end
can retrieve the required idle state data by using the idle state
index to execute a look-up on its internal data structures.
Reviewed-by: Ashwin Chaugule <ashwin.chaugule@linaro.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
On most common ARM systems, the low-power states a CPU can be put into are
not discoverable in HW and require device tree bindings to describe
power down suspend operations and idle states parameters.
In order to enable DT based idle states and configure idle drivers, this
patch implements the bulk infrastructure required to parse the device tree
idle states bindings and initialize the corresponding CPUidle driver states
data.
The parsing API accepts a start index that defines the first idle state
that should be initialized by the parsing code in order to give new and
legacy driver flexibility over which states should be parsed using the
new DT mechanism.
The idle states node(s) is obtained from the phandle list of the first cpu
in the driver cpumask; the kernel checks that the idle state node phandle
is the same for all CPUs in the driver cpumask before declaring the idle state
as valid and start parsing its content.
The idle state enter function pointer is initialized through DT match
structures passed in by the CPUidle driver, so that ARM legacy code can
cope with platform specific idle entry method based on compatible
string matching and the code used to initialize the enter function pointer
can be moved to the DT generic layer.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Exynos 5800 is big.LITTLE SoC compatible with the 5420. Add the
compatible string so this driver works on the 5800.
Tested on exynos5800-peach-pi (aka Samsung Chromebook2)
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
The kernel used to contain two functions for length-delimited,
case-insensitive string comparison, strnicmp with correct semantics
and a slightly buggy strncasecmp. The latter is the POSIX name, so
strnicmp was renamed to strncasecmp, and strnicmp made into a wrapper
for the new strncasecmp to avoid breaking existing users.
To allow the compat wrapper strnicmp to be removed at some point in
the future, and to avoid the extra indirection cost, do
s/strnicmp/strncasecmp/g.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
When the cpu enters idle, it stores the cpuidle state pointer in its
struct rq instance which in turn could be used to make a better decision
when balancing tasks.
As soon as the cpu exits its idle state, the struct rq reference is
cleared.
There are a couple of situations where the idle state pointer could be changed
while it is being consulted:
1. For x86/acpi with dynamic c-states, when a laptop switches from battery
to AC that could result on removing the deeper idle state. The acpi driver
triggers:
'acpi_processor_cst_has_changed'
'cpuidle_pause_and_lock'
'cpuidle_uninstall_idle_handler'
'kick_all_cpus_sync'.
All cpus will exit their idle state and the pointed object will be set to
NULL.
2. The cpuidle driver is unloaded. Logically that could happen but not
in practice because the drivers are always compiled in and 95% of them are
not coded to unregister themselves. In any case, the unloading code must
call 'cpuidle_unregister_device', that calls 'cpuidle_pause_and_lock'
leading to 'kick_all_cpus_sync' as mentioned above.
A race can happen if we use the pointer and then one of these two scenarios
occurs at the same moment.
In order to be safe, the idle state pointer stored in the rq must be
used inside a rcu_read_lock section where we are protected with the
'rcu_barrier' in the 'cpuidle_uninstall_idle_handler' function. The
idle_get_state() and idle_put_state() accessors should be used to that
effect.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: linux-pm@vger.kernel.org
Cc: linaro-kernel@lists.linaro.org
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/n/tip-@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The core is not powered down, it is pointless to call the cpu_pm notifiers and
switch to the global timer.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-and-tested-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
mach-kirkwood has been removed, now that kirkwood lives in mach-mvebu.
Use MACH_KIRKWOOD, which is set when kirkwood is built as part of
mach-mvebu.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: linux-pm@vger.kernel.org
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net>
Link: https://lkml.kernel.org/r/1409417172-6846-2-git-send-email-andrew@lunn.ch
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Commit af040ffc9b ("ARM: make it easier to check the CPU part number
correctly") changed ARM_CPU_PART_X masks, and the way they are returned and
checked against. Usage of read_cpuid_part_number() is now deprecated, and
calling places updated accordingly. This actually broke cpuidle-big_little
initialization, as bl_idle_driver_init() performs a check using an hardcoded
mask on cpu_id.
Create an interface to perform the check (that is now even easier to read).
Define also a proper mask (ARM_CPU_PART_MASK) that makes this kind of checks
cleaner and helps preventing bugs in the future. Update usage accordingly.
Signed-off-by: Juri Lelli <juri.lelli@arm.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
- Fix for an ACPI-based device hotplug regression introduced in 3.14
that causes a kernel panic to trigger when memory hot-remove is
attempted with CONFIG_ACPI_HOTPLUG_MEMORY unset from Tang Chen.
- Fix for a cpufreq regression introduced in 3.16 that triggers a
"sleeping function called from invalid context" bug in
dev_pm_opp_init_cpufreq_table() from Stephen Boyd.
- ACPI battery driver fix for a warning message added in 3.16 that
prints silly stuff sometimes from Mariusz Ceier.
- Hibernation fix for safer handling of mismatches in the 820 memory
map between the configurations during image creation and during
the subsequent restore from Chun-Yi Lee.
- ACPI processor driver fix to handle CPU hotplug notifications
correctly during system suspend/resume from Lan Tianyu.
- Series of four cpuidle menu governor cleanups that also should
speed it up a bit from Mel Gorman.
- Fixes for the speedstep-smi, integrator, cpu0 and arm_big_little
cpufreq drivers from Hans Wennborg, Himangi Saraogi, Markus Pargmann
and Uwe Kleine-König.
- Version 3.0 of the analyze_suspend.py suspend profiling tool
from Todd E Brandt.
/
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Merge tag 'pm+acpi-3.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI and power management updates from Rafael Wysocki:
"These are a couple of regression fixes, cpuidle menu governor
optimizations, fixes for ACPI proccessor and battery drivers,
hibernation fix to avoid problems related to the e820 memory map,
fixes for a few cpufreq drivers and a new version of the suspend
profiling tool analyze_suspend.py.
Specifics:
- Fix for an ACPI-based device hotplug regression introduced in 3.14
that causes a kernel panic to trigger when memory hot-remove is
attempted with CONFIG_ACPI_HOTPLUG_MEMORY unset from Tang Chen
- Fix for a cpufreq regression introduced in 3.16 that triggers a
"sleeping function called from invalid context" bug in
dev_pm_opp_init_cpufreq_table() from Stephen Boyd
- ACPI battery driver fix for a warning message added in 3.16 that
prints silly stuff sometimes from Mariusz Ceier
- Hibernation fix for safer handling of mismatches in the 820 memory
map between the configurations during image creation and during the
subsequent restore from Chun-Yi Lee
- ACPI processor driver fix to handle CPU hotplug notifications
correctly during system suspend/resume from Lan Tianyu
- Series of four cpuidle menu governor cleanups that also should
speed it up a bit from Mel Gorman
- Fixes for the speedstep-smi, integrator, cpu0 and arm_big_little
cpufreq drivers from Hans Wennborg, Himangi Saraogi, Markus
Pargmann and Uwe Kleine-König
- Version 3.0 of the analyze_suspend.py suspend profiling tool from
Todd E Brandt"
* tag 'pm+acpi-3.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / battery: Fix warning message in acpi_battery_get_state()
PM / tools: analyze_suspend.py: update to v3.0
cpufreq: arm_big_little: fix module license spec
cpufreq: speedstep-smi: fix decimal printf specifiers
ACPI / hotplug: Check scan handlers in acpi_scan_hot_remove()
cpufreq: OPP: Avoid sleeping while atomic
cpufreq: cpu0: Do not print error message when deferring
cpufreq: integrator: Use set_cpus_allowed_ptr
PM / hibernate: avoid unsafe pages in e820 reserved regions
ACPI / processor: Make acpi_cpu_soft_notify() process CPU FROZEN events
cpuidle: menu: Lookup CPU runqueues less
cpuidle: menu: Call nr_iowait_cpu less times
cpuidle: menu: Use ktime_to_us instead of reinventing the wheel
cpuidle: menu: Use shifts when calculating averages where possible
Due to recent consolidation of Exynos suspend and cpuidle code, some
parts of suspend and resume sequences are executed two times, once from
exynos_pm_syscore_ops and then from exynos_cpu_pm_notifier() and thus it
breaks suspend, at least on Exynos4-based boards. In addition, simple
core power down from a cpuidle driver could, in case of CPU 0 could
result in calling functions that are specific to suspend and deeper idle
states.
This patch fixes the issue by moving those operations outside the CPU PM
notifier into suspend and AFTR code paths. This leads to a bit of code
duplication, but allows additional code simplification, so in the end
more code is removed than added.
Fixes: 85f9f90808 ("ARM: EXYNOS: Use the cpu_pm notifier for pm")
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Olof Johansson <olof@lixom.net>
Cc: arm@kernel.org
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
[b.zolnierkie: ported patch over current changes]
[b.zolnierkie: fixed exynos_aftr_finisher() return value]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
This is the bulk of new SoC enablement and other platform changes for 3.17:
* Samsung S5PV210 has been converted to DT and multiplatform
* Clock drivers and bindings for some of the lower-end i.MX 1/2 platforms
* Kirkwood, one of the popular Marvell platforms, is folded into the
mvebu platform code, removing mach-kirkwood.
* Hwmod data for TI AM43xx and DRA7 platforms.
* More additions of Renesas shmobile platform support
* Removal of plat-samsung contents that can be removed with S5PV210 being
multiplatform/DT-enabled and the other two old platforms being removed.
New platforms (most with only basic support right now):
* Hisilicon X5HD2 settop box chipset is introduced
* Mediatek MT6589 (mobile chipset) is introduced
* Broadcom BCM7xxx settop box chipset is introduced
+ as usual a lot other pieces all over the platform code.
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Merge tag 'soc-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform changes from Olof Johansson:
"This is the bulk of new SoC enablement and other platform changes for
3.17:
- Samsung S5PV210 has been converted to DT and multiplatform
- Clock drivers and bindings for some of the lower-end i.MX 1/2
platforms
- Kirkwood, one of the popular Marvell platforms, is folded into the
mvebu platform code, removing mach-kirkwood
- Hwmod data for TI AM43xx and DRA7 platforms
- More additions of Renesas shmobile platform support
- Removal of plat-samsung contents that can be removed with S5PV210
being multiplatform/DT-enabled and the other two old platforms
being removed
New platforms (most with only basic support right now):
- Hisilicon X5HD2 settop box chipset is introduced
- Mediatek MT6589 (mobile chipset) is introduced
- Broadcom BCM7xxx settop box chipset is introduced
+ as usual a lot other pieces all over the platform code"
* tag 'soc-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (240 commits)
ARM: hisi: remove smp from machine descriptor
power: reset: move hisilicon reboot code
ARM: dts: Add hix5hd2-dkb dts file.
ARM: debug: Rename Hi3716 to HIX5HD2
ARM: hisi: enable hix5hd2 SoC
ARM: hisi: add ARCH_HISI
MAINTAINERS: add entry for Broadcom ARM STB architecture
ARM: brcmstb: select GISB arbiter and interrupt drivers
ARM: brcmstb: add infrastructure for ARM-based Broadcom STB SoCs
ARM: configs: enable SMP in bcm_defconfig
ARM: add SMP support for Broadcom mobile SoCs
Documentation: arm: misc updates to Marvell EBU SoC status
Documentation: arm: add URLs to public datasheets for the Marvell Armada XP SoC
ARM: mvebu: fix build without platforms selected
ARM: mvebu: add cpuidle support for Armada 38x
ARM: mvebu: add cpuidle support for Armada 370
cpuidle: mvebu: add Armada 38x support
cpuidle: mvebu: add Armada 370 support
cpuidle: mvebu: rename the driver from armada-370-xp to mvebu-v7
ARM: mvebu: export the SCU address
...
Pull powerpc updates from Ben Herrenschmidt:
"This is the powerpc new goodies for 3.17. The short story:
The biggest bit is Michael removing all of pre-POWER4 processor
support from the 64-bit kernel. POWER3 and rs64. This gets rid of a
ton of old cruft that has been bitrotting in a long while. It was
broken for quite a few versions already and nobody noticed. Nobody
uses those machines anymore. While at it, he cleaned up a bunch of
old dusty cabinets, getting rid of a skeletton or two.
Then, we have some base VFIO support for KVM, which allows assigning
of PCI devices to KVM guests, support for large 64-bit BARs on
"powernv" platforms, support for HMI (Hardware Management Interrupts)
on those same platforms, some sparse-vmemmap improvements (for memory
hotplug),
There is the usual batch of Freescale embedded updates (summary in the
merge commit) and fixes here or there, I think that's it for the
highlights"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (102 commits)
powerpc/eeh: Export eeh_iommu_group_to_pe()
powerpc/eeh: Add missing #ifdef CONFIG_IOMMU_API
powerpc: Reduce scariness of interrupt frames in stack traces
powerpc: start loop at section start of start in vmemmap_populated()
powerpc: implement vmemmap_free()
powerpc: implement vmemmap_remove_mapping() for BOOK3S
powerpc: implement vmemmap_list_free()
powerpc: Fail remap_4k_pfn() if PFN doesn't fit inside PTE
powerpc/book3s: Fix endianess issue for HMI handling on napping cpus.
powerpc/book3s: handle HMIs for cpus in nap mode.
powerpc/powernv: Invoke opal call to handle hmi.
powerpc/book3s: Add basic infrastructure to handle HMI in Linux.
powerpc/iommu: Fix comments with it_page_shift
powerpc/powernv: Handle compound PE in config accessors
powerpc/powernv: Handle compound PE for EEH
powerpc/powernv: Handle compound PE
powerpc/powernv: Split ioda_eeh_get_state()
powerpc/powernv: Allow to freeze PE
powerpc/powernv: Enable M64 aperatus for PHB3
powerpc/eeh: Aux PE data for error log
...
Pull trivial tree changes from Jiri Kosina:
"Summer edition of trivial tree updates"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (23 commits)
doc: fix two typos in watchdog-api.txt
irq-gic: remove file name from heading comment
MAINTAINERS: Add miscdevice.h to file list for char/misc drivers.
scsi: mvsas: mv_sas.c: Fix for possible null pointer dereference
doc: replace "practise" with "practice" in Documentation
befs: remove check for CONFIG_BEFS_RW
scsi: doc: fix 'SCSI_NCR_SETUP_MASTER_PARITY'
drivers/usb/phy/phy.c: remove a leading space
mfd: fix comment
cpuidle: fix comment
doc: hpfall.c: fix missing null-terminate after strncpy call
usb: doc: hotplug.txt code typos
kbuild: fix comment in Makefile.modinst
SH: add proper prompt to SH_MAGIC_PANEL_R2_VERSION
ARM: msm: Remove MSM_SCM
crypto: Remove MPILIB_EXTRA
doc: CN: remove dead link, kerneltrap.org no longer works
media: update reference, kerneltrap.org no longer works
hexagon: update reference, kerneltrap.org no longer works
doc: LSM: update reference, kerneltrap.org no longer works
...
The menu governer makes separate lookups of the CPU runqueue to get
load and number of IO waiters but it can be done with a single lookup.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
menu_select() via inline functions calls nr_iowait_cpu() twice as much
as necessary.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The ktime_to_us implementation is slightly better than the one implemented
in menu.c. Use it
Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
We use do_div even though the divisor will usually be a power-of-two
unless there are unusual outliers. Use shifts where possible
Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Flags from device-tree need to be parsed with accessors for
interpreting correct value in little-endian.
Signed-off-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Reviewed-by: Preeti U. Murthy <preeti@linux.vnet.ibm.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The time measurement is already done in the cpuidle framework in the
'cpuidle_enter_state' function.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Like the coupled idle state, it is not up to the user to set this option
but the driver to select it.
Remove the interactive selection of this option.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
use CPUIDLE_DRIVER_STATE_START, instead of hardcoded value 0. As,
CPUIDLE_DRIVER_STATE_START can be 1/0 based on
CONFIG_ARCH_HAS_CPU_RELAX is defined or not.
Signed-off-by: Mohammad Merajul Islam Molla <meraj.enigma@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
big_little CPU idle driver references functions defined in MCPM driver.
Thus make it depend on MCPM to avoid the following errors:
drivers/built-in.o: In function `bl_enter_powerdown':
drivers/cpuidle/cpuidle-big_little.c:134: undefined reference to `mcpm_cpu_powered_up'
drivers/built-in.o: In function `bl_powerdown_finisher':
drivers/cpuidle/cpuidle-big_little.c:104: undefined reference to `mcpm_set_entry_vector'
drivers/cpuidle/cpuidle-big_little.c:111: undefined reference to `mcpm_cpu_suspend'
make: *** [vmlinux] Error 1
Reported-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
STDDEV_THRESH was once defined and used in menu governor. But now its no longer
used anywhere. So removing the define.
Signed-off-by: Mohammad Merajul Islam Molla <meraj.enigma@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
- Armada XP
- Fix return value check in pmsu code
- Document URLs for new public datasheets (Thanks, Marvell & free-electrons!)
- Armada 370/38x
- Add cpuidle support
- mvebu
- Fix build when no platforms are selected
- Update EBU SoC status in docs
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Merge tag 'mvebu-soc-3.17-4' of git://git.infradead.org/linux-mvebu into next/soc
Merge "mvebu SoC changes for v3.17 (round 4)" from Jason Cooper:
- Armada XP
- Fix return value check in pmsu code
- Document URLs for new public datasheets (Thanks, Marvell & free-electrons!)
- Armada 370/38x
- Add cpuidle support
- mvebu
- Fix build when no platforms are selected
- Update EBU SoC status in docs
* tag 'mvebu-soc-3.17-4' of git://git.infradead.org/linux-mvebu: (21 commits)
Documentation: arm: misc updates to Marvell EBU SoC status
Documentation: arm: add URLs to public datasheets for the Marvell Armada XP SoC
ARM: mvebu: fix build without platforms selected
ARM: mvebu: add cpuidle support for Armada 38x
ARM: mvebu: add cpuidle support for Armada 370
cpuidle: mvebu: add Armada 38x support
cpuidle: mvebu: add Armada 370 support
cpuidle: mvebu: rename the driver from armada-370-xp to mvebu-v7
ARM: mvebu: export the SCU address
ARM: mvebu: make the snoop disabling optional in mvebu_v7_pmsu_idle_prepare()
ARM: mvebu: use a local variable to store the resume address
ARM: mvebu: make the cpuidle initialization more generic
ARM: mvebu: rename the armada_370_xp symbols to mvebu_v7 in pmsu.c
ARM: mvebu: use the common function for Armada 375 SMP workaround
ARM: mvebu: add a common function for the boot address work around
ARM: mvebu: sort the #include of pmsu.c in alphabetic order
ARM: mvebu: split again armada_370_xp_pmsu_idle_enter() in PMSU code
ARM: mvebu: fix return value check in armada_xp_pmsu_cpufreq_init()
clk: mvebu: extend clk-cpu for dynamic frequency scaling
ARM: mvebu: extend PMSU code to support dynamic frequency scaling
...
Conflicts:
arch/arm/mach-mvebu/Kconfig
drivers/cpuidle/cpuidle-armada-370-xp.c
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit adds the list of cpuidle states supported by the Armada
38x SoC in the cpuidle-mvebu-v7 driver, as well as the necessary logic
around it to support this SoC.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lkml.kernel.org/r/1406120453-29291-14-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit adds the list of cpuidle states supported by the Armada
370 SoC in the cpuidle-mvebu-v7 driver, as well as the necessary logic
around it to support this SoC.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lkml.kernel.org/r/1406120453-29291-13-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This driver will be able to manage the cpuidle for more SoCs than just
Armada 370 and XP. It will also support Armada 38x and potentially
other SoC of the Marvell Armada EBU family. To take this into account,
this patch renames the driver and its symbols.
It also changes the driver name from cpuidle-armada-370-xp to
cpuidle-armada-xp, because separate platform drivers will be
registered for the other SoC types. This change must be done
simultaneously in the cpuidle driver and in the PMSU code in order to
remain bisectable.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lkml.kernel.org/r/1406120453-29291-12-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
cpuidle driver name sysfs node is read-only, so permissions should be 0444.
Signed-off-by: Mohammad Merajul Islam Molla <meraj.enigma@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Add support to select generic big-little cpuidle driver for Samsung Exynos
series SoC's. This is required for Exynos big-llittle SoC's eg, Exynos5420.
Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This driver will be used by many big.Little Soc's. As of now it does
string matching of hardcoded compatible string to init the driver. This
comparison list will keep on growing with addition of new SoC's.
Hence add of_device_id structure to collect the compatible strings of
SoC's using this driver.
Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
idle_exit event is the first event after a core exits
idle state. So this should be traced before local irq
is ebabled. Likewise idle_entry is the last event before
a core enters idle state. This will ease visualising the
cpu idle state from kernel traces.
Signed-off-by: Sandeep Tripathy <sandeep.tripathy@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
[rjw: Subject, rebase]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The length name of the states 2 was too long to fit in the allocated
string (limited to 16 bytes). This lead to improper string displayed
through sysfs.
This patch shorten the name by removing the reference to Marvell and
to the CPU as both are implicit. For coherency the same change have
been done for the states 1.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Pull more powerpc updates from Ben Herrenschmidt:
"Here are the remaining bits I was mentioning earlier. Mostly bug
fixes and new selftests from Michael (yay !). He also removed the WSP
platform and A2 core support which were dead before release, so less
clutter.
One little "feature" I snuck in is the doorbell IPI support for
non-virtualized P8 which speeds up IPIs significantly between threads
of a core"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (34 commits)
powerpc/book3s: Fix some ABIv2 issues in machine check code
powerpc/book3s: Fix guest MC delivery mechanism to avoid soft lockups in guest.
powerpc/book3s: Increment the mce counter during machine_check_early call.
powerpc/book3s: Add stack overflow check in machine check handler.
powerpc/book3s: Fix machine check handling for unhandled errors
powerpc/eeh: Dump PE location code
powerpc/powernv: Enable POWER8 doorbell IPIs
powerpc/cpuidle: Only clear LPCR decrementer wakeup bit on fast sleep entry
powerpc/powernv: Fix killed EEH event
powerpc: fix typo 'CONFIG_PMAC'
powerpc: fix typo 'CONFIG_PPC_CPU'
powerpc/powernv: Don't escalate non-existing frozen PE
powerpc/eeh: Report frozen parent PE prior to child PE
powerpc/eeh: Clear frozen state for child PE
powerpc/powernv: Reduce panic timeout from 180s to 10s
powerpc/xmon: avoid format string leaking to printk
selftests/powerpc: Add tests of PMU EBBs
selftests/powerpc: Add support for skipping tests
selftests/powerpc: Put the test in a separate process group
selftests/powerpc: Fix instruction loop for ABIv2 (LE)
...
Pull more scheduler updates from Ingo Molnar:
"Second round of scheduler changes:
- try-to-wakeup and IPI reduction speedups, from Andy Lutomirski
- continued power scheduling cleanups and refactorings, from Nicolas
Pitre
- misc fixes and enhancements"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/deadline: Delete extraneous extern for to_ratio()
sched/idle: Optimize try-to-wake-up IPI
sched/idle: Simplify wake_up_idle_cpu()
sched/idle: Clear polling before descheduling the idle thread
sched, trace: Add a tracepoint for IPI-less remote wakeups
cpuidle: Set polling in poll_idle
sched: Remove redundant assignment to "rt_rq" in update_curr_rt(...)
sched: Rename capacity related flags
sched: Final power vs. capacity cleanups
sched: Remove remaining dubious usage of "power"
sched: Let 'struct sched_group_power' care about CPU capacity
sched/fair: Disambiguate existing/remaining "capacity" usage
sched/fair: Change "has_capacity" to "has_free_capacity"
sched/fair: Remove "power" from 'struct numa_stats'
sched: Fix signedness bug in yield_to()
sched/fair: Use time_after() in record_wakee()
sched/balancing: Reduce the rate of needless idle load balancing
sched/fair: Fix unlocked reads of some cfs_b->quota/period
Fix this dependency on the locking tree's smp_mb*() API changes:
kernel/sched/idle.c:247:3: error: implicit declaration of function ‘smp_mb__after_atomic’ [-Werror=implicit-function-declaration]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Currently when entering fastsleep we clear all LPCR PECE bits.
This patch changes it to only clear the decrementer bit (ie. PECE1), which is
the only bit we really need to clear here. This is needed if we want to set
other wakeup causes like the PECEDH bit so we can use hypervisor doorbells on
powernv. Also we no longer clear the MER bit as it should never be set in the
host anyway.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Pull MIPS updates from Ralf Baechle:
- three fixes for 3.15 that didn't make it in time
- limited Octeon 3 support.
- paravirtualization support
- improvment to platform support for Netlogix SOCs.
- add support for powering down the Malta eval board in software
- add many instructions to the in-kernel microassembler.
- add support for the BPF JIT.
- minor cleanups of the BCM47xx code.
- large cleanup of math emu code resulting in significant code size
reduction, better readability of the code and more accurate
emulation.
- improvments to the MIPS CPS code.
- support C3 power status for the R4k count/compare clock device.
- improvments to the GIO support for older SGI workstations.
- increase number of supported CPUs to 256; this can be reached on
certain embedded multithreaded ccNUMA configurations.
- various small cleanups, updates and fixes
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (173 commits)
MIPS: IP22/IP28: Improve GIO support
MIPS: Octeon: Add twsi interrupt initialization for OCTEON 3XXX, 5XXX, 63XX
DEC: Document the R4k MB ASIC mini interrupt controller
DEC: Add self as the maintainer
MIPS: Add microMIPS MSA support.
MIPS: Replace calls to obsolete strict_strto call with kstrto* equivalents.
MIPS: Replace obsolete strict_strto call with kstrto
MIPS: BFP: Simplify code slightly.
MIPS: Call find_vma with the mmap_sem held
MIPS: Fix 'write_msa_##' inline macro.
MIPS: Fix MSA toolchain support detection.
mips: Update the email address of Geert Uytterhoeven
MIPS: Add minimal defconfig for mips_paravirt
MIPS: Enable build for new system 'paravirt'
MIPS: paravirt: Add pci controller for virtio
MIPS: Add code for new system 'paravirt'
MIPS: Add functions for hypervisor call
MIPS: OCTEON: Add OCTEON3 to __get_cpu_type
MIPS: Add function get_ebase_cpunum
MIPS: Add minimal support for OCTEON3 to c-r4k.c
...
- ACPICA update to upstream version 20140424. That includes a
number of fixes and improvements related to things like GPE
handling, table loading, headers, memory mapping and unmapping,
DSDT/SSDT overriding, and the Unload() operator. The acpidump
utility from upstream ACPICA is included too. From Bob Moore,
Lv Zheng, David Box, David Binderman, and Colin Ian King.
- Fixes and cleanups related to ACPI video and backlight interfaces
from Hans de Goede. That includes blacklist entries for some new
machines and using native backlight by default.
- ACPI device enumeration changes to create platform devices
rather than PNP devices for ACPI device objects with _HID by
default. PNP devices will still be created for the ACPI device
object with device IDs corresponding to real PNP devices, so
that change should not break things left and right, and we're
expecting to see more and more ACPI-enumerated platform devices
in the future. From Zhang Rui and Rafael J Wysocki.
- Updates for the ACPI LPSS (Low-Power Subsystem) driver allowing
it to handle system suspend/resume on Asus T100 correctly.
From Heikki Krogerus and Rafael J Wysocki.
- PM core update introducing a mechanism to allow runtime-suspended
devices to stay suspended over system suspend/resume transitions
if certain additional conditions related to coordination within
device hierarchy are met. Related PM documentation update and
ACPI PM domain support for the new feature. From Rafael J Wysocki.
- Fixes and improvements related to the "freeze" sleep state. They
affect several places including cpuidle, PM core, ACPI core, and
the ACPI battery driver. From Rafael J Wysocki and Zhang Rui.
- Miscellaneous fixes and updates of the ACPI core from Aaron Lu,
Bjørn Mork, Hanjun Guo, Lan Tianyu, and Rafael J Wysocki.
- Fixes and cleanups for the ACPI processor and ACPI PAD (Processor
Aggregator Device) drivers from Baoquan He, Manuel Schölling,
Tony Camuso, and Toshi Kani.
- System suspend/resume optimization in the ACPI battery driver from
Lan Tianyu.
- OPP (Operating Performance Points) subsystem updates from
Chander Kashyap, Mark Brown, and Nishanth Menon.
- cpufreq core fixes, updates and cleanups from Srivatsa S Bhat,
Stratos Karafotis, and Viresh Kumar.
- Updates, fixes and cleanups for the Tegra, powernow-k8, imx6q,
s5pv210, nforce2, and powernv cpufreq drivers from Brian Norris,
Jingoo Han, Paul Bolle, Philipp Zabel, Stratos Karafotis, and
Viresh Kumar.
- intel_pstate driver fixes and cleanups from Dirk Brandewie,
Doug Smythies, and Stratos Karafotis.
- Enabling the big.LITTLE cpufreq driver on arm64 from Mark Brown.
- Fix for the cpuidle menu governor from Chander Kashyap.
- New ARM clps711x cpuidle driver from Alexander Shiyan.
- Hibernate core fixes and cleanups from Chen Gang, Dan Carpenter,
Fabian Frederick, Pali Rohár, and Sebastian Capella.
- Intel RAPL (Running Average Power Limit) driver updates from
Jacob Pan.
- PNP subsystem updates from Bjorn Helgaas and Fabian Frederick.
- devfreq core updates from Chanwoo Choi and Paul Bolle.
- devfreq updates for exynos4 and exynos5 from Chanwoo Choi and
Bartlomiej Zolnierkiewicz.
- turbostat tool fix from Jean Delvare.
- cpupower tool updates from Prarit Bhargava, Ramkumar Ramachandra
and Thomas Renninger.
- New ACPI ec_access.c tool for poking at the EC in a safe way
from Thomas Renninger.
/
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Merge tag 'pm+acpi-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm into next
Pull ACPI and power management updates from Rafael Wysocki:
"ACPICA is the leader this time (63 commits), followed by cpufreq (28
commits), devfreq (15 commits), system suspend/hibernation (12
commits), ACPI video and ACPI device enumeration (10 commits each).
We have no major new features this time, but there are a few
significant changes of how things work. The most visible one will
probably be that we are now going to create platform devices rather
than PNP devices by default for ACPI device objects with _HID. That
was long overdue and will be really necessary to be able to use the
same drivers for the same hardware blocks on ACPI and DT-based systems
going forward. We're not expecting fallout from this one (as usual),
but it's something to watch nevertheless.
The second change having a chance to be visible is that ACPI video
will now default to using native backlight rather than the ACPI
backlight interface which should generally help systems with broken
Win8 BIOSes. We're hoping that all problems with the native backlight
handling that we had previously have been addressed and we are in a
good enough shape to flip the default, but this change should be easy
enough to revert if need be.
In addition to that, the system suspend core has a new mechanism to
allow runtime-suspended devices to stay suspended throughout system
suspend/resume transitions if some extra conditions are met
(generally, they are related to coordination within device hierarchy).
However, enabling this feature requires cooperation from the bus type
layer and for now it has only been implemented for the ACPI PM domain
(used by ACPI-enumerated platform devices mostly today).
Also, the acpidump utility that was previously shipped as a separate
tool will now be provided by the upstream ACPICA along with the rest
of ACPICA code, which will allow it to be more up to date and better
supported, and we have one new cpuidle driver (ARM clps711x).
The rest is improvements related to certain specific use cases,
cleanups and fixes all over the place.
Specifics:
- ACPICA update to upstream version 20140424. That includes a number
of fixes and improvements related to things like GPE handling,
table loading, headers, memory mapping and unmapping, DSDT/SSDT
overriding, and the Unload() operator. The acpidump utility from
upstream ACPICA is included too. From Bob Moore, Lv Zheng, David
Box, David Binderman, and Colin Ian King.
- Fixes and cleanups related to ACPI video and backlight interfaces
from Hans de Goede. That includes blacklist entries for some new
machines and using native backlight by default.
- ACPI device enumeration changes to create platform devices rather
than PNP devices for ACPI device objects with _HID by default. PNP
devices will still be created for the ACPI device object with
device IDs corresponding to real PNP devices, so that change should
not break things left and right, and we're expecting to see more
and more ACPI-enumerated platform devices in the future. From
Zhang Rui and Rafael J Wysocki.
- Updates for the ACPI LPSS (Low-Power Subsystem) driver allowing it
to handle system suspend/resume on Asus T100 correctly. From
Heikki Krogerus and Rafael J Wysocki.
- PM core update introducing a mechanism to allow runtime-suspended
devices to stay suspended over system suspend/resume transitions if
certain additional conditions related to coordination within device
hierarchy are met. Related PM documentation update and ACPI PM
domain support for the new feature. From Rafael J Wysocki.
- Fixes and improvements related to the "freeze" sleep state. They
affect several places including cpuidle, PM core, ACPI core, and
the ACPI battery driver. From Rafael J Wysocki and Zhang Rui.
- Miscellaneous fixes and updates of the ACPI core from Aaron Lu,
Bjørn Mork, Hanjun Guo, Lan Tianyu, and Rafael J Wysocki.
- Fixes and cleanups for the ACPI processor and ACPI PAD (Processor
Aggregator Device) drivers from Baoquan He, Manuel Schölling, Tony
Camuso, and Toshi Kani.
- System suspend/resume optimization in the ACPI battery driver from
Lan Tianyu.
- OPP (Operating Performance Points) subsystem updates from Chander
Kashyap, Mark Brown, and Nishanth Menon.
- cpufreq core fixes, updates and cleanups from Srivatsa S Bhat,
Stratos Karafotis, and Viresh Kumar.
- Updates, fixes and cleanups for the Tegra, powernow-k8, imx6q,
s5pv210, nforce2, and powernv cpufreq drivers from Brian Norris,
Jingoo Han, Paul Bolle, Philipp Zabel, Stratos Karafotis, and
Viresh Kumar.
- intel_pstate driver fixes and cleanups from Dirk Brandewie, Doug
Smythies, and Stratos Karafotis.
- Enabling the big.LITTLE cpufreq driver on arm64 from Mark Brown.
- Fix for the cpuidle menu governor from Chander Kashyap.
- New ARM clps711x cpuidle driver from Alexander Shiyan.
- Hibernate core fixes and cleanups from Chen Gang, Dan Carpenter,
Fabian Frederick, Pali Rohár, and Sebastian Capella.
- Intel RAPL (Running Average Power Limit) driver updates from Jacob
Pan.
- PNP subsystem updates from Bjorn Helgaas and Fabian Frederick.
- devfreq core updates from Chanwoo Choi and Paul Bolle.
- devfreq updates for exynos4 and exynos5 from Chanwoo Choi and
Bartlomiej Zolnierkiewicz.
- turbostat tool fix from Jean Delvare.
- cpupower tool updates from Prarit Bhargava, Ramkumar Ramachandra
and Thomas Renninger.
- New ACPI ec_access.c tool for poking at the EC in a safe way from
Thomas Renninger"
* tag 'pm+acpi-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (187 commits)
ACPICA: Namespace: Remove _PRP method support.
intel_pstate: Improve initial busy calculation
intel_pstate: add sample time scaling
intel_pstate: Correct rounding in busy calculation
intel_pstate: Remove C0 tracking
PM / hibernate: fixed typo in comment
ACPI: Fix x86 regression related to early mapping size limitation
ACPICA: Tables: Add mechanism to control early table checksum verification.
ACPI / scan: use platform bus type by default for _HID enumeration
ACPI / scan: always register ACPI LPSS scan handler
ACPI / scan: always register memory hotplug scan handler
ACPI / scan: always register container scan handler
ACPI / scan: Change the meaning of missing .attach() in scan handlers
ACPI / scan: introduce platform_id device PNP type flag
ACPI / scan: drop unsupported serial IDs from PNP ACPI scan handler ID list
ACPI / scan: drop IDs that do not comply with the ACPI PNP ID rule
ACPI / PNP: use device ID list for PNPACPI device enumeration
ACPI / scan: .match() callback for ACPI scan handlers
ACPI / battery: wakeup the system only when necessary
power_supply: allow power supply devices registered w/o wakeup source
...
Pull scheduler updates from Ingo Molnar:
"The main scheduling related changes in this cycle were:
- various sched/numa updates, for better performance
- tree wide cleanup of open coded nice levels
- nohz fix related to rq->nr_running use
- cpuidle changes and continued consolidation to improve the
kernel/sched/idle.c high level idle scheduling logic. As part of
this effort I pulled cpuidle driver changes from Rafael as well.
- standardized idle polling amongst architectures
- continued work on preparing better power/energy aware scheduling
- sched/rt updates
- misc fixlets and cleanups"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (49 commits)
sched/numa: Decay ->wakee_flips instead of zeroing
sched/numa: Update migrate_improves/degrades_locality()
sched/numa: Allow task switch if load imbalance improves
sched/rt: Fix 'struct sched_dl_entity' and dl_task_time() comments, to match the current upstream code
sched: Consolidate open coded implementations of nice level frobbing into nice_to_rlimit() and rlimit_to_nice()
sched: Initialize rq->age_stamp on processor start
sched, nohz: Change rq->nr_running to always use wrappers
sched: Fix the rq->next_balance logic in rebalance_domains() and idle_balance()
sched: Use clamp() and clamp_val() to make sys_nice() more readable
sched: Do not zero sg->cpumask and sg->sgp->power in build_sched_groups()
sched/numa: Fix initialization of sched_domain_topology for NUMA
sched: Call select_idle_sibling() when not affine_sd
sched: Simplify return logic in sched_read_attr()
sched: Simplify return logic in sched_copy_attr()
sched: Fix exec_start/task_hot on migrated tasks
arm64: Remove TIF_POLLING_NRFLAG
metag: Remove TIF_POLLING_NRFLAG
sched/idle: Make cpuidle_idle_call() void
sched/idle: Reflow cpuidle_idle_call()
sched/idle: Delay clearing the polling bit
...
