13 Mar, 2019
1 commit
-
Add check for the return value of memblock_alloc*() functions and call
panic() in case of error. The panic message repeats the one used by
panicing memblock allocators with adjustment of parameters to include
only relevant ones.The replacement was mostly automated with semantic patches like the one
below with manual massaging of format strings.@@
expression ptr, size, align;
@@
ptr = memblock_alloc(size, align);
+ if (!ptr)
+ panic("%s: Failed to allocate %lu bytes align=0x%lx\n", __func__, size, align);[anders.roxell@linaro.org: use '%pa' with 'phys_addr_t' type]
Link: http://lkml.kernel.org/r/20190131161046.21886-1-anders.roxell@linaro.org
[rppt@linux.ibm.com: fix format strings for panics after memblock_alloc]
Link: http://lkml.kernel.org/r/1548950940-15145-1-git-send-email-rppt@linux.ibm.com
[rppt@linux.ibm.com: don't panic if the allocation in sparse_buffer_init fails]
Link: http://lkml.kernel.org/r/20190131074018.GD28876@rapoport-lnx
[akpm@linux-foundation.org: fix xtensa printk warning]
Link: http://lkml.kernel.org/r/1548057848-15136-20-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport
Signed-off-by: Anders Roxell
Reviewed-by: Guo Ren [c-sky]
Acked-by: Paul Burton [MIPS]
Acked-by: Heiko Carstens [s390]
Reviewed-by: Juergen Gross [Xen]
Reviewed-by: Geert Uytterhoeven [m68k]
Acked-by: Max Filippov [xtensa]
Cc: Catalin Marinas
Cc: Christophe Leroy
Cc: Christoph Hellwig
Cc: "David S. Miller"
Cc: Dennis Zhou
Cc: Greentime Hu
Cc: Greg Kroah-Hartman
Cc: Guan Xuetao
Cc: Guo Ren
Cc: Mark Salter
Cc: Matt Turner
Cc: Michael Ellerman
Cc: Michal Simek
Cc: Petr Mladek
Cc: Richard Weinberger
Cc: Rich Felker
Cc: Rob Herring
Cc: Rob Herring
Cc: Russell King
Cc: Stafford Horne
Cc: Tony Luck
Cc: Vineet Gupta
Cc: Yoshinori Sato
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Mar, 2019
1 commit
-
Pull power management updates from Rafael Wysocki:
"These are PM-runtime framework changes to use ktime instead of jiffies
for accounting, new PM core flag to mark devices that don't need any
form of power management, cpuidle updates including driver API
documentation and a new governor, cpufreq updates including a new
driver for Armada 8K, thermal cleanups and more, some energy-aware
scheduling (EAS) enabling changes, new chips support in the intel_idle
and RAPL drivers and assorted cleanups in some other places.Specifics:
- Update the PM-runtime framework to use ktime instead of jiffies for
accounting (Thara Gopinath, Vincent Guittot)- Optimize the autosuspend code in the PM-runtime framework somewhat
(Ladislav Michl)- Add a PM core flag to mark devices that don't need any form of
power management (Sudeep Holla)- Introduce driver API documentation for cpuidle and add a new
cpuidle governor for tickless systems (Rafael Wysocki)- Add Jacobsville support to the intel_idle driver (Zhang Rui)
- Clean up a cpuidle core header file and the cpuidle-dt and ACPI
processor-idle drivers (Yangtao Li, Joseph Lo, Yazen Ghannam)- Add new cpufreq driver for Armada 8K (Gregory Clement)
- Fix and clean up cpufreq core (Rafael Wysocki, Viresh Kumar, Amit
Kucheria)- Add support for light-weight tear-down and bring-up of CPUs to the
cpufreq core and use it in the cpufreq-dt driver (Viresh Kumar)- Fix cpu_cooling Kconfig dependencies, add support for CPU cooling
auto-registration to the cpufreq core and use it in multiple
cpufreq drivers (Amit Kucheria)- Fix some minor issues and do some cleanups in the davinci,
e_powersaver, ap806, s5pv210, qcom and kryo cpufreq drivers
(Bartosz Golaszewski, Gustavo Silva, Julia Lawall, Paweł Chmiel,
Taniya Das, Viresh Kumar)- Add a Hisilicon CPPC quirk to the cppc_cpufreq driver (Xiongfeng
Wang)- Clean up the intel_pstate and acpi-cpufreq drivers (Erwan Velu,
Rafael Wysocki)- Clean up multiple cpufreq drivers (Yangtao Li)
- Update cpufreq-related MAINTAINERS entries (Baruch Siach, Lukas
Bulwahn)- Add support for exposing the Energy Model via debugfs and make
multiple cpufreq drivers register an Energy Model to support
energy-aware scheduling (Quentin Perret, Dietmar Eggemann, Matthias
Kaehlcke)- Add Ice Lake mobile and Jacobsville support to the Intel RAPL
power-capping driver (Gayatri Kammela, Zhang Rui)- Add a power estimation helper to the operating performance points
(OPP) framework and clean up a core function in it (Quentin Perret,
Viresh Kumar)- Make minor improvements in the generic power domains (genpd), OPP
and system suspend frameworks and in the PM core (Aditya Pakki,
Douglas Anderson, Greg Kroah-Hartman, Rafael Wysocki, Yangtao Li)"* tag 'pm-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (80 commits)
cpufreq: kryo: Release OPP tables on module removal
cpufreq: ap806: add missing of_node_put after of_device_is_available
cpufreq: acpi-cpufreq: Report if CPU doesn't support boost technologies
cpufreq: Pass updated policy to driver ->setpolicy() callback
cpufreq: Fix two debug messages in cpufreq_set_policy()
cpufreq: Reorder and simplify cpufreq_update_policy()
cpufreq: Add kerneldoc comments for two core functions
PM / core: Add support to skip power management in device/driver model
cpufreq: intel_pstate: Rework iowait boosting to be less aggressive
cpufreq: intel_pstate: Eliminate intel_pstate_get_base_pstate()
cpufreq: intel_pstate: Avoid redundant initialization of local vars
powercap/intel_rapl: add Ice Lake mobile
ACPI / processor: Set P_LVL{2,3} idle state descriptions
cpufreq / cppc: Work around for Hisilicon CPPC cpufreq
ACPI / CPPC: Add a helper to get desired performance
cpufreq: davinci: move configuration to include/linux/platform_data
cpufreq: speedstep: convert BUG() to BUG_ON()
cpufreq: powernv: fix missing check of return value in init_powernv_pstates()
cpufreq: longhaul: remove unneeded semicolon
cpufreq: pcc-cpufreq: remove unneeded semicolon
..
06 Mar, 2019
2 commits
-
The content of pages that are marked PG_offline is not of interest (e.g.
inflated by a balloon driver), let's skip these pages.In saveable_highmem_page(), move the PageReserved() check to a new check
along with the PageOffline() check to separate it from the swsusp
checks.[david@redhat.com: v2]
Link: http://lkml.kernel.org/r/20181122100627.5189-9-david@redhat.com
Link: http://lkml.kernel.org/r/20181119101616.8901-9-david@redhat.com
Signed-off-by: David Hildenbrand
Acked-by: Pavel Machek
Acked-by: Rafael J. Wysocki
Cc: Pavel Machek
Cc: Len Brown
Cc: Matthew Wilcox
Cc: Michal Hocko
Cc: "Michael S. Tsirkin"
Cc: Alexander Duyck
Cc: Alexey Dobriyan
Cc: Arnd Bergmann
Cc: Baoquan He
Cc: Borislav Petkov
Cc: Boris Ostrovsky
Cc: Christian Hansen
Cc: Dave Young
Cc: David Rientjes
Cc: Greg Kroah-Hartman
Cc: Haiyang Zhang
Cc: Jonathan Corbet
Cc: Juergen Gross
Cc: Julien Freche
Cc: Kairui Song
Cc: Kazuhito Hagio
Cc: "Kirill A. Shutemov"
Cc: Konstantin Khlebnikov
Cc: "K. Y. Srinivasan"
Cc: Lianbo Jiang
Cc: Michal Hocko
Cc: Mike Rapoport
Cc: Miles Chen
Cc: Nadav Amit
Cc: Naoya Horiguchi
Cc: Omar Sandoval
Cc: Pankaj gupta
Cc: Pavel Tatashin
Cc: "Rafael J. Wysocki"
Cc: Stefano Stabellini
Cc: Stephen Hemminger
Cc: Stephen Rothwell
Cc: Vitaly Kuznetsov
Cc: Vlastimil Babka
Cc: Xavier Deguillard
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Let's use pfn_to_online_page() instead of pfn_to_page() when checking
for saveable pages to not save/restore offline memory sections.Link: http://lkml.kernel.org/r/20181119101616.8901-8-david@redhat.com
Signed-off-by: David Hildenbrand
Suggested-by: Michal Hocko
Acked-by: Michal Hocko
Acked-by: Pavel Machek
Acked-by: Rafael J. Wysocki
Cc: Len Brown
Cc: Matthew Wilcox
Cc: "Michael S. Tsirkin"
Cc: Alexander Duyck
Cc: Alexey Dobriyan
Cc: Arnd Bergmann
Cc: Baoquan He
Cc: Borislav Petkov
Cc: Boris Ostrovsky
Cc: Christian Hansen
Cc: Dave Young
Cc: David Rientjes
Cc: Greg Kroah-Hartman
Cc: Haiyang Zhang
Cc: Jonathan Corbet
Cc: Juergen Gross
Cc: Julien Freche
Cc: Kairui Song
Cc: Kazuhito Hagio
Cc: "Kirill A. Shutemov"
Cc: Konstantin Khlebnikov
Cc: "K. Y. Srinivasan"
Cc: Lianbo Jiang
Cc: Mike Rapoport
Cc: Miles Chen
Cc: Nadav Amit
Cc: Naoya Horiguchi
Cc: Omar Sandoval
Cc: Pankaj gupta
Cc: Pavel Tatashin
Cc: "Rafael J. Wysocki"
Cc: Stefano Stabellini
Cc: Stephen Hemminger
Cc: Stephen Rothwell
Cc: Vitaly Kuznetsov
Cc: Vlastimil Babka
Cc: Xavier Deguillard
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
04 Mar, 2019
1 commit
-
* pm-core:
PM / core: Add support to skip power management in device/driver model
PM / suspend: Print debug messages for device using direct-complete
PM-runtime: update time accounting only when enabled
PM-runtime: Switch accounting over to ktime_get_mono_fast_ns()
PM-runtime: Optimize pm_runtime_autosuspend_expiration()
PM-runtime: Replace jiffies-based accounting with ktime-based accounting
PM-runtime: update accounting_timestamp on enable
PM: clock_ops: fix missing clk_prepare() return value check
drm/i915: Move on the new pm runtime interface
PM-runtime: Add new interface to get accounted time* pm-sleep:
PM / wakeup: fix kerneldoc comment for pm_wakeup_dev_event()* pm-qos:
PM: QoS: no need to check return value of debugfs_create functions* pm-domains:
PM / Domains: Mark "name" const in dev_pm_domain_attach_by_name()
PM / Domains: Mark "name" const in genpd_dev_pm_attach_by_name()
PM: domains: no need to check return value of debugfs_create functions* pm-em:
PM / EM: Expose the Energy Model in debugfs
24 Jan, 2019
1 commit
-
The recently introduced Energy Model (EM) framework manages power cost
tables of CPUs. These tables are currently only visible from kernel
space. However, in order to debug the behaviour of subsystems that use
the EM (EAS for example), it is often required to know what the power
costs are from userspace.For this reason, introduce under /sys/kernel/debug/energy_model a set of
directories representing the performance domains of the system. Each
performance domain contains a set of sub-directories representing the
different capacity states (cs) and their attributes, as well as a file
exposing the related CPUs.The resulting hierarchy is as follows on Arm juno r0 for example:
/sys/kernel/debug/energy_model
├── pd0
│ ├── cpus
│ ├── cs:450000
│ │ ├── cost
│ │ ├── frequency
│ │ └── power
│ ├── cs:575000
│ │ ├── cost
│ │ ├── frequency
│ │ └── power
│ ├── cs:700000
│ │ ├── cost
│ │ ├── frequency
│ │ └── power
│ ├── cs:775000
│ │ ├── cost
│ │ ├── frequency
│ │ └── power
│ └── cs:850000
│ ├── cost
│ ├── frequency
│ └── power
└── pd1
├── cpus
├── cs:1100000
│ ├── cost
│ ├── frequency
│ └── power
├── cs:450000
│ ├── cost
│ ├── frequency
│ └── power
├── cs:625000
│ ├── cost
│ ├── frequency
│ └── power
├── cs:800000
│ ├── cost
│ ├── frequency
│ └── power
└── cs:950000
├── cost
├── frequency
└── powerSigned-off-by: Quentin Perret
Reviewed-by: Greg Kroah-Hartman
Signed-off-by: Rafael J. Wysocki
23 Jan, 2019
1 commit
-
When calling debugfs functions, there is no need to ever check the
return value. The function can work or not, but the code logic should
never do something different based on this.Signed-off-by: Greg Kroah-Hartman
Signed-off-by: Rafael J. Wysocki
29 Dec, 2018
1 commit
-
totalram_pages and totalhigh_pages are made static inline function.
Main motivation was that managed_page_count_lock handling was complicating
things. It was discussed in length here,
https://lore.kernel.org/patchwork/patch/995739/#1181785 So it seemes
better to remove the lock and convert variables to atomic, with preventing
poteintial store-to-read tearing as a bonus.[akpm@linux-foundation.org: coding style fixes]
Link: http://lkml.kernel.org/r/1542090790-21750-4-git-send-email-arunks@codeaurora.org
Signed-off-by: Arun KS
Suggested-by: Michal Hocko
Suggested-by: Vlastimil Babka
Reviewed-by: Konstantin Khlebnikov
Reviewed-by: Pavel Tatashin
Acked-by: Michal Hocko
Acked-by: Vlastimil Babka
Cc: David Hildenbrand
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 Dec, 2018
1 commit
-
Pull scheduler updates from Ingo Molnar:
"The main changes in this cycle were:- Introduce "Energy Aware Scheduling" - by Quentin Perret.
This is a coherent topology description of CPUs in cooperation with
the PM subsystem, with the goal to schedule more energy-efficiently
on asymetric SMP platform - such as waking up tasks to the more
energy-efficient CPUs first, as long as the system isn't
oversubscribed.For details of the design, see:
https://lore.kernel.org/lkml/20180724122521.22109-1-quentin.perret@arm.com/
- Misc cleanups and smaller enhancements"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
sched/fair: Select an energy-efficient CPU on task wake-up
sched/fair: Introduce an energy estimation helper function
sched/fair: Add over-utilization/tipping point indicator
sched/fair: Clean-up update_sg_lb_stats parameters
sched/toplogy: Introduce the 'sched_energy_present' static key
sched/topology: Make Energy Aware Scheduling depend on schedutil
sched/topology: Disable EAS on inappropriate platforms
sched/topology: Add lowest CPU asymmetry sched_domain level pointer
sched/topology: Reference the Energy Model of CPUs when available
PM: Introduce an Energy Model management framework
sched/cpufreq: Prepare schedutil for Energy Aware Scheduling
sched/topology: Relocate arch_scale_cpu_capacity() to the internal header
sched/core: Remove unnecessary unlikely() in push_*_task()
sched/topology: Remove the ::smt_gain field from 'struct sched_domain'
sched: Fix various typos in comments
sched/core: Clean up the #ifdef block in add_nr_running()
sched/fair: Make some variables static
sched/core: Create task_has_idle_policy() helper
sched/fair: Add lsub_positive() and use it consistently
sched/fair: Mask UTIL_AVG_UNCHANGED usages
...
21 Dec, 2018
1 commit
-
* pm-core:
PM-runtime: Switch autosuspend over to using hrtimers* pm-qos:
PM / QoS: Change to use DEFINE_SHOW_ATTRIBUTE macro* pm-domains:
PM / Domains: remove define_genpd_open_function() and define_genpd_debugfs_fops()* pm-sleep:
PM / sleep: convert to DEFINE_SHOW_ATTRIBUTE
13 Dec, 2018
1 commit
-
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
Signed-off-by: Yangtao Li
Acked-by: Pavel Machek
Signed-off-by: Rafael J. Wysocki
11 Dec, 2018
1 commit
-
Several subsystems in the kernel (task scheduler and/or thermal at the
time of writing) can benefit from knowing about the energy consumed by
CPUs. Yet, this information can come from different sources (DT or
firmware for example), in different formats, hence making it hard to
exploit without a standard API.As an attempt to address this, introduce a centralized Energy Model
(EM) management framework which aggregates the power values provided
by drivers into a table for each performance domain in the system. The
power cost tables are made available to interested clients (e.g. task
scheduler or thermal) via platform-agnostic APIs. The overall design
is represented by the diagram below (focused on Arm-related drivers as
an example, but applicable to any architecture):+---------------+ +-----------------+ +-------------+
| Thermal (IPA) | | Scheduler (EAS) | | Other |
+---------------+ +-----------------+ +-------------+
| | em_pd_energy() |
| | em_cpu_get() |
+-----------+ | +--------+
| | |
v v v
+---------------------+
| |
| Energy Model |
| |
| Framework |
| |
+---------------------+
^ ^ ^
| | | em_register_perf_domain()
+----------+ | +---------+
| | |
+---------------+ +---------------+ +--------------+
| cpufreq-dt | | arm_scmi | | Other |
+---------------+ +---------------+ +--------------+
^ ^ ^
| | |
+--------------+ +---------------+ +--------------+
| Device Tree | | Firmware | | ? |
+--------------+ +---------------+ +--------------+Drivers (typically, but not limited to, CPUFreq drivers) can register
data in the EM framework using the em_register_perf_domain() API. The
calling driver must provide a callback function with a standardized
signature that will be used by the EM framework to build the power
cost tables of the performance domain. This design should offer a lot of
flexibility to calling drivers which are free of reading information
from any location and to use any technique to compute power costs.
Moreover, the capacity states registered by drivers in the EM framework
are not required to match real performance states of the target. This
is particularly important on targets where the performance states are
not known by the OS.The power cost coefficients managed by the EM framework are specified in
milli-watts. Although the two potential users of those coefficients (IPA
and EAS) only need relative correctness, IPA specifically needs to
compare the power of CPUs with the power of other components (GPUs, for
example), which are still expressed in absolute terms in their
respective subsystems. Hence, specifying the power of CPUs in
milli-watts should help transitioning IPA to using the EM framework
without introducing new problems by keeping units comparable across
sub-systems.
On the longer term, the EM of other devices than CPUs could also be
managed by the EM framework, which would enable to remove the absolute
unit. However, this is not absolutely required as a first step, so this
extension of the EM framework is left for later.On the client side, the EM framework offers APIs to access the power
cost tables of a CPU (em_cpu_get()), and to estimate the energy
consumed by the CPUs of a performance domain (em_pd_energy()). Clients
such as the task scheduler can then use these APIs to access the shared
data structures holding the Energy Model of CPUs.Signed-off-by: Quentin Perret
Signed-off-by: Peter Zijlstra (Intel)
Cc: Linus Torvalds
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Rafael J. Wysocki
Cc: Thomas Gleixner
Cc: adharmap@codeaurora.org
Cc: chris.redpath@arm.com
Cc: currojerez@riseup.net
Cc: dietmar.eggemann@arm.com
Cc: edubezval@gmail.com
Cc: gregkh@linuxfoundation.org
Cc: javi.merino@kernel.org
Cc: joel@joelfernandes.org
Cc: juri.lelli@redhat.com
Cc: morten.rasmussen@arm.com
Cc: patrick.bellasi@arm.com
Cc: pkondeti@codeaurora.org
Cc: skannan@codeaurora.org
Cc: smuckle@google.com
Cc: srinivas.pandruvada@linux.intel.com
Cc: thara.gopinath@linaro.org
Cc: tkjos@google.com
Cc: valentin.schneider@arm.com
Cc: vincent.guittot@linaro.org
Cc: viresh.kumar@linaro.org
Link: https://lkml.kernel.org/r/20181203095628.11858-4-quentin.perret@arm.com
Signed-off-by: Ingo Molnar
30 Nov, 2018
1 commit
-
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
Signed-off-by: Yangtao Li
Acked-by: Pavel Machek
Signed-off-by: Rafael J. Wysocki
31 Oct, 2018
3 commits
-
When a memblock allocation APIs are called with align = 0, the alignment
is implicitly set to SMP_CACHE_BYTES.Implicit alignment is done deep in the memblock allocator and it can
come as a surprise. Not that such an alignment would be wrong even
when used incorrectly but it is better to be explicit for the sake of
clarity and the prinicple of the least surprise.Replace all such uses of memblock APIs with the 'align' parameter
explicitly set to SMP_CACHE_BYTES and stop implicit alignment assignment
in the memblock internal allocation functions.For the case when memblock APIs are used via helper functions, e.g. like
iommu_arena_new_node() in Alpha, the helper functions were detected with
Coccinelle's help and then manually examined and updated where
appropriate.The direct memblock APIs users were updated using the semantic patch below:
@@
expression size, min_addr, max_addr, nid;
@@
(
|
- memblock_alloc_try_nid_raw(size, 0, min_addr, max_addr, nid)
+ memblock_alloc_try_nid_raw(size, SMP_CACHE_BYTES, min_addr, max_addr,
nid)
|
- memblock_alloc_try_nid_nopanic(size, 0, min_addr, max_addr, nid)
+ memblock_alloc_try_nid_nopanic(size, SMP_CACHE_BYTES, min_addr, max_addr,
nid)
|
- memblock_alloc_try_nid(size, 0, min_addr, max_addr, nid)
+ memblock_alloc_try_nid(size, SMP_CACHE_BYTES, min_addr, max_addr, nid)
|
- memblock_alloc(size, 0)
+ memblock_alloc(size, SMP_CACHE_BYTES)
|
- memblock_alloc_raw(size, 0)
+ memblock_alloc_raw(size, SMP_CACHE_BYTES)
|
- memblock_alloc_from(size, 0, min_addr)
+ memblock_alloc_from(size, SMP_CACHE_BYTES, min_addr)
|
- memblock_alloc_nopanic(size, 0)
+ memblock_alloc_nopanic(size, SMP_CACHE_BYTES)
|
- memblock_alloc_low(size, 0)
+ memblock_alloc_low(size, SMP_CACHE_BYTES)
|
- memblock_alloc_low_nopanic(size, 0)
+ memblock_alloc_low_nopanic(size, SMP_CACHE_BYTES)
|
- memblock_alloc_from_nopanic(size, 0, min_addr)
+ memblock_alloc_from_nopanic(size, SMP_CACHE_BYTES, min_addr)
|
- memblock_alloc_node(size, 0, nid)
+ memblock_alloc_node(size, SMP_CACHE_BYTES, nid)
)[mhocko@suse.com: changelog update]
[akpm@linux-foundation.org: coding-style fixes]
[rppt@linux.ibm.com: fix missed uses of implicit alignment]
Link: http://lkml.kernel.org/r/20181016133656.GA10925@rapoport-lnx
Link: http://lkml.kernel.org/r/1538687224-17535-1-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport
Suggested-by: Michal Hocko
Acked-by: Paul Burton [MIPS]
Acked-by: Michael Ellerman [powerpc]
Acked-by: Michal Hocko
Cc: Catalin Marinas
Cc: Chris Zankel
Cc: Geert Uytterhoeven
Cc: Guan Xuetao
Cc: Ingo Molnar
Cc: Matt Turner
Cc: Michal Simek
Cc: Richard Weinberger
Cc: Russell King
Cc: Thomas Gleixner
Cc: Tony Luck
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Move remaining definitions and declarations from include/linux/bootmem.h
into include/linux/memblock.h and remove the redundant header.The includes were replaced with the semantic patch below and then
semi-automated removal of duplicated '#include@@
@@
- #include
+ #include[sfr@canb.auug.org.au: dma-direct: fix up for the removal of linux/bootmem.h]
Link: http://lkml.kernel.org/r/20181002185342.133d1680@canb.auug.org.au
[sfr@canb.auug.org.au: powerpc: fix up for removal of linux/bootmem.h]
Link: http://lkml.kernel.org/r/20181005161406.73ef8727@canb.auug.org.au
[sfr@canb.auug.org.au: x86/kaslr, ACPI/NUMA: fix for linux/bootmem.h removal]
Link: http://lkml.kernel.org/r/20181008190341.5e396491@canb.auug.org.au
Link: http://lkml.kernel.org/r/1536927045-23536-30-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport
Signed-off-by: Stephen Rothwell
Acked-by: Michal Hocko
Cc: Catalin Marinas
Cc: Chris Zankel
Cc: "David S. Miller"
Cc: Geert Uytterhoeven
Cc: Greentime Hu
Cc: Greg Kroah-Hartman
Cc: Guan Xuetao
Cc: Ingo Molnar
Cc: "James E.J. Bottomley"
Cc: Jonas Bonn
Cc: Jonathan Corbet
Cc: Ley Foon Tan
Cc: Mark Salter
Cc: Martin Schwidefsky
Cc: Matt Turner
Cc: Michael Ellerman
Cc: Michal Simek
Cc: Palmer Dabbelt
Cc: Paul Burton
Cc: Richard Kuo
Cc: Richard Weinberger
Cc: Rich Felker
Cc: Russell King
Cc: Serge Semin
Cc: Thomas Gleixner
Cc: Tony Luck
Cc: Vineet Gupta
Cc: Yoshinori Sato
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The conversion is done using
sed -i 's@memblock_virt_alloc@memblock_alloc@g' \
$(git grep -l memblock_virt_alloc)Link: http://lkml.kernel.org/r/1536927045-23536-8-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport
Cc: Catalin Marinas
Cc: Chris Zankel
Cc: "David S. Miller"
Cc: Geert Uytterhoeven
Cc: Greentime Hu
Cc: Greg Kroah-Hartman
Cc: Guan Xuetao
Cc: Ingo Molnar
Cc: "James E.J. Bottomley"
Cc: Jonas Bonn
Cc: Jonathan Corbet
Cc: Ley Foon Tan
Cc: Mark Salter
Cc: Martin Schwidefsky
Cc: Matt Turner
Cc: Michael Ellerman
Cc: Michal Hocko
Cc: Michal Simek
Cc: Palmer Dabbelt
Cc: Paul Burton
Cc: Richard Kuo
Cc: Richard Weinberger
Cc: Rich Felker
Cc: Russell King
Cc: Serge Semin
Cc: Thomas Gleixner
Cc: Tony Luck
Cc: Vineet Gupta
Cc: Yoshinori Sato
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
18 Oct, 2018
1 commit
-
* acpi-pm:
ACPI / PM: LPIT: Register sysfs attributes based on FADT* pm-sleep:
x86-32, hibernate: Adjust in_suspend after resumed on 32bit system
x86-32, hibernate: Set up temporary text mapping for 32bit system
x86-32, hibernate: Switch to relocated restore code during resume on 32bit system
x86-32, hibernate: Switch to original page table after resumed
x86-32, hibernate: Use the page size macro instead of constant value
x86-32, hibernate: Use temp_pgt as the temporary page table
x86, hibernate: Rename temp_level4_pgt to temp_pgt
x86-32, hibernate: Enable CONFIG_ARCH_HIBERNATION_HEADER on 32bit system
x86, hibernate: Extract the common code of 64/32 bit system
x86-32/asm/power: Create stack frames in hibernate_asm_32.S
PM / hibernate: Check the success of generating md5 digest before hibernation
x86, hibernate: Fix nosave_regions setup for hibernation
PM / sleep: Show freezing tasks that caused a suspend abort
PM / hibernate: Documentation: fix image_size default value
12 Oct, 2018
1 commit
-
Dmitry writes:
"Input updates for v4.19-rc7- we added a few scheduling points into various input interfaces to
ensure that large writes will not cause RCU stalls
- fixed configuring PS/2 keyboards as wakeup devices on newer
platforms
- added a new Xbox gamepad ID."* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: uinput - add a schedule point in uinput_inject_events()
Input: evdev - add a schedule point in evdev_write()
Input: mousedev - add a schedule point in mousedev_write()
Input: i8042 - enable keyboard wakeups by default when s2idle is used
Input: xpad - add support for Xbox1 PDP Camo series gamepad
02 Oct, 2018
1 commit
-
Previously, on typical consumer laptops, pressing a key on the keyboard
when the system is in suspend would cause it to wake up (default or
unconditional behaviour). This happens because the EC generates a SCI
interrupt in this scenario.That is no longer true on modern laptops based on Intel WhiskeyLake,
including Acer Swift SF314-55G, Asus UX333FA, Asus UX433FN and Asus
UX533FD. We confirmed with Asus EC engineers that the "Modern Standby"
design has been modified so that the EC no longer generates a SCI
in this case; the keyboard controller itself should be used for wakeup.In order to retain the standard behaviour of being able to use the
keyboard to wake up the system, enable serio wakeups by default on
platforms that are using s2idle.Link: https://lkml.kernel.org/r/CAB4CAwfQ0mPMqCLp95TVjw4J0r5zKPWkSvvkK4cpZUGE--w8bQ@mail.gmail.com
Reviewed-by: Rafael J. Wysocki
Signed-off-by: Daniel Drake
Signed-off-by: Dmitry Torokhov
10 Sep, 2018
1 commit
-
For debug purposes it would be nice to see which tasks
caused a suspend abort, i.e. which tasks were still
in the process of freezing when a wakeup event occurred.
This patch adds the info to pm_debug_messages.Signed-off-by: Todd Brandt
Signed-off-by: Rafael J. Wysocki
15 Aug, 2018
2 commits
-
Commit ea0212f40c6 (power: auto select CONFIG_SRCU) made the code in
drivers/base/power/wakeup.c use SRCU instead of RCU, but it forgot to
select CONFIG_SRCU in Kconfig, which leads to the following build
error if CONFIG_SRCU is not selected somewhere else:drivers/built-in.o: In function `wakeup_source_remove':
(.text+0x3c6fc): undefined reference to `synchronize_srcu'
drivers/built-in.o: In function `pm_print_active_wakeup_sources':
(.text+0x3c7a8): undefined reference to `__srcu_read_lock'
drivers/built-in.o: In function `pm_print_active_wakeup_sources':
(.text+0x3c84c): undefined reference to `__srcu_read_unlock'
drivers/built-in.o: In function `device_wakeup_arm_wake_irqs':
(.text+0x3d1d8): undefined reference to `__srcu_read_lock'
drivers/built-in.o: In function `device_wakeup_arm_wake_irqs':
(.text+0x3d228): undefined reference to `__srcu_read_unlock'
drivers/built-in.o: In function `device_wakeup_disarm_wake_irqs':
(.text+0x3d24c): undefined reference to `__srcu_read_lock'
drivers/built-in.o: In function `device_wakeup_disarm_wake_irqs':
(.text+0x3d29c): undefined reference to `__srcu_read_unlock'
drivers/built-in.o:(.data+0x4158): undefined reference to `process_srcu'Fix this error by selecting CONFIG_SRCU when PM_SLEEP is enabled.
Fixes: ea0212f40c6 (power: auto select CONFIG_SRCU)
Cc: 4.2+ # 4.2+
Signed-off-by: zhangyi (F)
[ rjw: Minor subject/changelog fixups ]
Signed-off-by: Rafael J. Wysocki -
Pull power management updates from Rafael Wysocki:
"These add a new framework for CPU idle time injection, to be used by
all of the idle injection code in the kernel in the future, fix some
issues and add a number of relatively small extensions in multiple
places.Specifics:
- Add a new framework for CPU idle time injection (Daniel Lezcano).
- Add AVS support to the armada-37xx cpufreq driver (Gregory
CLEMENT).- Add support for current CPU frequency reporting to the ACPI CPPC
cpufreq driver (George Cherian).- Rework the cooling device registration in the imx6q/thermal driver
(Bastian Stender).- Make the pcc-cpufreq driver refuse to work with dynamic scaling
governors on systems with many CPUs to avoid scalability issues
with it (Rafael Wysocki).- Fix the intel_pstate driver to report different maximum CPU
frequencies on systems where they really are different and to
ignore the turbo active ratio if hardware-managend P-states (HWP)
are in use; make it use the match_string() helper (Xie Yisheng,
Srinivas Pandruvada).- Fix a minor deferred probe issue in the qcom-kryo cpufreq driver
(Niklas Cassel).- Add a tracepoint for the tracking of frequency limits changes (from
Andriod) to the cpufreq core (Ruchi Kandoi).- Fix a circular lock dependency between CPU hotplug and sysfs
locking in the cpufreq core reported by lockdep (Waiman Long).- Avoid excessive error reports on driver registration failures in
the ARM cpuidle driver (Sudeep Holla).- Add a new device links flag to the driver core to make links go
away automatically on supplier driver removal (Vivek Gautam).- Eliminate potential race condition between system-wide power
management transitions and system shutdown (Pingfan Liu).- Add a quirk to save NVS memory on system suspend for the ASUS 1025C
laptop (Willy Tarreau).- Make more systems use suspend-to-idle (instead of ACPI S3) by
default (Tristian Celestin).- Get rid of stack VLA usage in the low-level hibernation code on
64-bit x86 (Kees Cook).- Fix error handling in the hibernation core and mark an expected
fall-through switch in it (Chengguang Xu, Gustavo Silva).- Extend the generic power domains (genpd) framework to support
attaching a device to a power domain by name (Ulf Hansson).- Fix device reference counting and user limits initialization in the
devfreq core (Arvind Yadav, Matthias Kaehlcke).- Fix a few issues in the rk3399_dmc devfreq driver and improve its
documentation (Enric Balletbo i Serra, Lin Huang, Nick Milner).- Drop a redundant error message from the exynos-ppmu devfreq driver
(Markus Elfring)"* tag 'pm-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (35 commits)
PM / reboot: Eliminate race between reboot and suspend
PM / hibernate: Mark expected switch fall-through
cpufreq: intel_pstate: Ignore turbo active ratio in HWP
cpufreq: Fix a circular lock dependency problem
cpu/hotplug: Add a cpus_read_trylock() function
x86/power/hibernate_64: Remove VLA usage
cpufreq: trace frequency limits change
cpufreq: intel_pstate: Show different max frequency with turbo 3 and HWP
cpufreq: pcc-cpufreq: Disable dynamic scaling on many-CPU systems
cpufreq: qcom-kryo: Silently error out on EPROBE_DEFER
cpufreq / CPPC: Add cpuinfo_cur_freq support for CPPC
cpufreq: armada-37xx: Add AVS support
dt-bindings: marvell: Add documentation for the Armada 3700 AVS binding
PM / devfreq: rk3399_dmc: Fix duplicated opp table on reload.
PM / devfreq: Init user limits from OPP limits, not viceversa
PM / devfreq: rk3399_dmc: fix spelling mistakes.
PM / devfreq: rk3399_dmc: do not print error when get supply and clk defer.
dt-bindings: devfreq: rk3399_dmc: move interrupts to be optional.
PM / devfreq: rk3399_dmc: remove wait for dcf irq event.
dt-bindings: clock: add rk3399 DDR3 standard speed bins.
...
06 Aug, 2018
2 commits
-
At present, "systemctl suspend" and "shutdown" can run in parrallel. A
system can suspend after devices_shutdown(), and resume. Then the shutdown
task goes on to power off. This causes many devices are not really shut
off. Hence replacing reboot_mutex with system_transition_mutex (renamed
from pm_mutex) to achieve the exclusion. The renaming of pm_mutex as
system_transition_mutex can be better to reflect the purpose of the mutex.Signed-off-by: Pingfan Liu
Acked-by: Pavel Machek
Signed-off-by: Rafael J. Wysocki -
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.This addresses Coverity-ID: 114713 ("Missing break in switch").
Signed-off-by: Gustavo A. R. Silva
Acked-by: Pavel Machek
Signed-off-by: Rafael J. Wysocki
02 Jul, 2018
1 commit
-
If PAGE_SIZE is unsigned type then negative error code will be
larger than PAGE_SIZE.Signed-off-by: Chengguang Xu
Signed-off-by: Rafael J. Wysocki
20 Jun, 2018
1 commit
-
Since swait basically implemented exclusive waits only, make sure
the API reflects that.$ git grep -l -e "\"
-e "\" | while read file;
do
sed -i -e 's/\/&_one/g'
-e 's/\/&_exclusive/g' $file;
doneWith a few manual touch-ups.
Suggested-by: Linus Torvalds
Signed-off-by: Peter Zijlstra (Intel)
Signed-off-by: Thomas Gleixner
Acked-by: Linus Torvalds
Cc: bigeasy@linutronix.de
Cc: oleg@redhat.com
Cc: paulmck@linux.vnet.ibm.com
Cc: pbonzini@redhat.com
Link: https://lkml.kernel.org/r/20180612083909.261946548@infradead.org
16 Jun, 2018
1 commit
-
As files move around, their previous links break. Fix the
references for them.Acked-by: Andy Shevchenko
Signed-off-by: Mauro Carvalho Chehab
Acked-by: Jonathan Corbet
13 Jun, 2018
1 commit
-
The vmalloc() function has no 2-factor argument form, so multiplication
factors need to be wrapped in array_size(). This patch replaces cases of:vmalloc(a * b)
with:
vmalloc(array_size(a, b))as well as handling cases of:
vmalloc(a * b * c)
with:
vmalloc(array3_size(a, b, c))
This does, however, attempt to ignore constant size factors like:
vmalloc(4 * 1024)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@(
vmalloc(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
vmalloc(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@(
vmalloc(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
vmalloc(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
vmalloc(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
vmalloc(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
vmalloc(
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
vmalloc(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
vmalloc(
- sizeof(char) * COUNT
+ COUNT
, ...)
|
vmalloc(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@(
vmalloc(
- sizeof(TYPE) * (COUNT_ID)
+ array_size(COUNT_ID, sizeof(TYPE))
, ...)
|
vmalloc(
- sizeof(TYPE) * COUNT_ID
+ array_size(COUNT_ID, sizeof(TYPE))
, ...)
|
vmalloc(
- sizeof(TYPE) * (COUNT_CONST)
+ array_size(COUNT_CONST, sizeof(TYPE))
, ...)
|
vmalloc(
- sizeof(TYPE) * COUNT_CONST
+ array_size(COUNT_CONST, sizeof(TYPE))
, ...)
|
vmalloc(
- sizeof(THING) * (COUNT_ID)
+ array_size(COUNT_ID, sizeof(THING))
, ...)
|
vmalloc(
- sizeof(THING) * COUNT_ID
+ array_size(COUNT_ID, sizeof(THING))
, ...)
|
vmalloc(
- sizeof(THING) * (COUNT_CONST)
+ array_size(COUNT_CONST, sizeof(THING))
, ...)
|
vmalloc(
- sizeof(THING) * COUNT_CONST
+ array_size(COUNT_CONST, sizeof(THING))
, ...)
)// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@vmalloc(
- SIZE * COUNT
+ array_size(COUNT, SIZE)
, ...)// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@(
vmalloc(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
vmalloc(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
vmalloc(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
vmalloc(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
vmalloc(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
vmalloc(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
vmalloc(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
vmalloc(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@(
vmalloc(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
vmalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
vmalloc(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
vmalloc(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
vmalloc(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
vmalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@(
vmalloc(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
vmalloc(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
vmalloc(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
vmalloc(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
vmalloc(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
vmalloc(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
vmalloc(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
vmalloc(
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)// Any remaining multi-factor products, first at least 3-factor products
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@(
vmalloc(C1 * C2 * C3, ...)
|
vmalloc(
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)// And then all remaining 2 factors products when they're not all constants.
@@
expression E1, E2;
constant C1, C2;
@@(
vmalloc(C1 * C2, ...)
|
vmalloc(
- E1 * E2
+ array_size(E1, E2)
, ...)
)Signed-off-by: Kees Cook
06 Jun, 2018
1 commit
-
Pull power management updates from Rafael Wysocki:
"These include a significant update of the generic power domains
(genpd) and Operating Performance Points (OPP) frameworks, mostly
related to the introduction of power domain performance levels,
cpufreq updates (new driver for Qualcomm Kryo processors, updates of
the existing drivers, some core fixes, schedutil governor
improvements), PCI power management fixes, ACPI workaround for
EC-based wakeup events handling on resume from suspend-to-idle, and
major updates of the turbostat and pm-graph utilities.Specifics:
- Introduce power domain performance levels into the the generic
power domains (genpd) and Operating Performance Points (OPP)
frameworks (Viresh Kumar, Rajendra Nayak, Dan Carpenter).- Fix two issues in the runtime PM framework related to the
initialization and removal of devices using device links (Ulf
Hansson).- Clean up the initialization of drivers for devices in PM domains
(Ulf Hansson, Geert Uytterhoeven).- Fix a cpufreq core issue related to the policy sysfs interface
causing CPU online to fail for CPUs sharing one cpufreq policy in
some situations (Tao Wang).- Make it possible to use platform-specific suspend/resume hooks in
the cpufreq-dt driver and make the Armada 37xx DVFS use that
feature (Viresh Kumar, Miquel Raynal).- Optimize policy transition notifications in cpufreq (Viresh Kumar).
- Improve the iowait boost mechanism in the schedutil cpufreq
governor (Patrick Bellasi).- Improve the handling of deferred frequency updates in the schedutil
cpufreq governor (Joel Fernandes, Dietmar Eggemann, Rafael Wysocki,
Viresh Kumar).- Add a new cpufreq driver for Qualcomm Kryo (Ilia Lin).
- Fix and clean up some cpufreq drivers (Colin Ian King, Dmitry
Osipenko, Doug Smythies, Luc Van Oostenryck, Simon Horman, Viresh
Kumar).- Fix the handling of PCI devices with the DPM_SMART_SUSPEND flag set
and update stale comments in the PCI core PM code (Rafael Wysocki).- Work around an issue related to the handling of EC-based wakeup
events in the ACPI PM core during resume from suspend-to-idle if
the EC has been put into the low-power mode (Rafael Wysocki).- Improve the handling of wakeup source objects in the PM core (Doug
Berger, Mahendran Ganesh, Rafael Wysocki).- Update the driver core to prevent deferred probe from breaking
suspend/resume ordering (Feng Kan).- Clean up the PM core somewhat (Bjorn Helgaas, Ulf Hansson, Rafael
Wysocki).- Make the core suspend/resume code and cpufreq support the RT patch
(Sebastian Andrzej Siewior, Thomas Gleixner).- Consolidate the PM QoS handling in cpuidle governors (Rafael
Wysocki).- Fix a possible crash in the hibernation core (Tetsuo Handa).
- Update the rockchip-io Adaptive Voltage Scaling (AVS) driver (David
Wu).- Update the turbostat utility (fixes, cleanups, new CPU IDs, new
command line options, built-in "Low Power Idle" counters support,
new POLL and POLL% columns) and add an entry for it to MAINTAINERS
(Len Brown, Artem Bityutskiy, Chen Yu, Laura Abbott, Matt Turner,
Prarit Bhargava, Srinivas Pandruvada).- Update the pm-graph to version 5.1 (Todd Brandt).
- Update the intel_pstate_tracer utility (Doug Smythies)"
* tag 'pm-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (128 commits)
tools/power turbostat: update version number
tools/power turbostat: Add Node in output
tools/power turbostat: add node information into turbostat calculations
tools/power turbostat: remove num_ from cpu_topology struct
tools/power turbostat: rename num_cores_per_pkg to num_cores_per_node
tools/power turbostat: track thread ID in cpu_topology
tools/power turbostat: Calculate additional node information for a package
tools/power turbostat: Fix node and siblings lookup data
tools/power turbostat: set max_num_cpus equal to the cpumask length
tools/power turbostat: if --num_iterations, print for specific number of iterations
tools/power turbostat: Add Cannon Lake support
tools/power turbostat: delete duplicate #defines
x86: msr-index.h: Correct SNB_C1/C3_AUTO_UNDEMOTE defines
tools/power turbostat: Correct SNB_C1/C3_AUTO_UNDEMOTE defines
tools/power turbostat: add POLL and POLL% column
tools/power turbostat: Fix --hide Pk%pc10
tools/power turbostat: Build-in "Low Power Idle" counters support
tools/power turbostat: Don't make man pages executable
tools/power turbostat: remove blank lines
tools/power turbostat: a small C-states dump readability immprovement
...
04 Jun, 2018
2 commits
-
* pm-pci:
PCI / PM: Clean up outdated comments in pci_target_state()
PCI / PM: Do not clear state_saved for devices that remain suspended* acpi-pm:
ACPI: EC: Dispatch the EC GPE directly on s2idle wake
ACPICA: Introduce acpi_dispatch_gpe()* pm-sleep:
PM / hibernate: Fix oops at snapshot_write()
PM / wakeup: Make s2idle_lock a RAW_SPINLOCK
PM / s2idle: Make s2idle_wait_head swait based
PM / wakeup: Make events_lock a RAW_SPINLOCK
PM / suspend: Prevent might sleep splats* pm-avs:
PM / AVS: rockchip-io: add io selectors and supplies for PX30 -
* pm-qos:
PM / QoS: Drop redundant declaration of pm_qos_get_value()* pm-core:
PM / runtime: Drop usage count for suppliers at device link removal
PM / runtime: Fixup reference counting of device link suppliers at probe
PM: wakeup: Use pr_debug() for the "aborting suspend" message
PM / core: Drop unused internal inline functions for sysfs
PM / core: Drop unused internal functions for pm_qos sysfs
PM / core: Drop unused internal inline functions for wakeirqs
PM / core: Drop internal unused inline functions for wakeups
PM / wakeup: Only update last time for active wakeup sources
PM / wakeup: Use seq_open() to show wakeup stats
PM / core: Use dev_printk() and symbols in suspend/resume diagnostics
PM / core: Simplify initcall_debug_report() timing
PM / core: Remove unused initcall_debug_report() arguments
PM / core: fix deferred probe breaking suspend resume order
29 May, 2018
1 commit
-
The extra forward declaration of pm_qos_get_value() is redundant, so
drop it.Signed-off-by: Rafael J. Wysocki
27 May, 2018
4 commits
-
syzbot is reporting NULL pointer dereference at snapshot_write() [1].
This is because data->handle is zero-cleared by ioctl(SNAPSHOT_FREE).
Fix this by checking data_of(data->handle) != NULL before using it.[1] https://syzkaller.appspot.com/bug?id=828a3c71bd344a6de8b6a31233d51a72099f27fd
Signed-off-by: Tetsuo Handa
Reported-by: syzbot
Signed-off-by: Rafael J. Wysocki -
The `s2idle_lock' is acquired during suspend while interrupts are
disabled even on RT. The lock is acquired for short sections only.
Make it a RAW lock which avoids "sleeping while atomic" warnings on RT.Signed-off-by: Sebastian Andrzej Siewior
Signed-off-by: Rafael J. Wysocki -
s2idle_wait_head is used during s2idle with interrupts disabled even on
RT. There is no "custom" wake up function so swait could be used instead
which is also lower weight compared to the wait_queue.
Make s2idle_wait_head a swait_queue_head.Signed-off-by: Sebastian Andrzej Siewior
Signed-off-by: Rafael J. Wysocki -
timekeeping suspend/resume calls read_persistent_clock() which takes
rtc_lock. That results in might sleep warnings because at that point
we run with interrupts disabled.We cannot convert rtc_lock to a raw spinlock as that would trigger
other might sleep warnings.As a workaround we disable the might sleep warnings by setting
system_state to SYSTEM_SUSPEND before calling sysdev_suspend() and
restoring it to SYSTEM_RUNNING afer sysdev_resume(). There is no lock
contention because hibernate / suspend to RAM is single-CPU at this
point.In s2idle's case the system_state is set to SYSTEM_SUSPEND before
timekeeping_suspend() which is invoked by the last CPU. In the resume
case it set back to SYSTEM_RUNNING after timekeeping_resume() which is
invoked by the first CPU in the resume case. The other CPUs will block
on tick_freeze_lock.Signed-off-by: Thomas Gleixner
[bigeasy: cover s2idle in tick_freeze() / tick_unfreeze()]
Signed-off-by: Sebastian Andrzej Siewior
Signed-off-by: Rafael J. Wysocki
14 May, 2018
1 commit
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Same numerical value (for now at least), but a much better documentation
of intent.Signed-off-by: Christoph Hellwig
Reviewed-by: Hannes Reinecke
Signed-off-by: Jens Axboe
10 May, 2018
1 commit
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When wakelock support was added, the wakeup_source_add() function
was updated to set the last_time value of the wakeup source. This
has the unintended side effect of producing confusing output from
pm_print_active_wakeup_sources() when a wakeup source is added
prior to a sleep that is blocked by a different wakeup source.The function pm_print_active_wakeup_sources() will search for the
most recently active wakeup source when no active source is found.
If a wakeup source is added after a different wakeup source blocks
the system from going to sleep it may have a later last_time value
than the blocking source and be output as the last active wakeup
source even if it has never actually been active.It looks to me like the change to wakeup_source_add() was made to
prevent the wakelock garbage collection from accidentally dropping
a wakelock during the narrow window between adding the wakelock to
the wakelock list in wakelock_lookup_add() and the activation of
the wakeup source in pm_wake_lock().This commit changes the behavior so that only the last_time of the
wakeup source used by a wakelock is initialized prior to adding it
to the wakeup source list. This preserves the meaning of the
last_time value as the last time the wakeup source was active and
allows a wakeup source that has never been active to have a
last_time value of 0.Fixes: b86ff9820fd5 (PM / Sleep: Add user space interface for manipulating wakeup sources, v3)
Signed-off-by: Doug Berger
Signed-off-by: Rafael J. Wysocki
09 Apr, 2018
1 commit
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In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.Signed-off-by: Gustavo A. R. Silva
Acked-by: Pavel Machek
Signed-off-by: Rafael J. Wysocki
04 Apr, 2018
1 commit
-
Pull power management updates from Rafael Wysocki:
"These update the cpuidle poll state definition to reduce excessive
energy usage related to it, add new CPU ID to the RAPL power capping
driver, update the ACPI system suspend code to handle some special
cases better, extend the PM core's device links code slightly, add new
sysfs attribute for better suspend-to-idle diagnostics and easier
hibernation handling, update power management tools and clean up
cpufreq quite a bit.Specifics:
- Modify the cpuidle poll state implementation to prevent CPUs from
staying in the loop in there for excessive times (Rafael Wysocki).- Add Intel Cannon Lake chips support to the RAPL power capping
driver (Joe Konno).- Add reference counting to the device links handling code in the PM
core (Lukas Wunner).- Avoid reconfiguring GPEs on suspend-to-idle in the ACPI system
suspend code (Rafael Wysocki).- Allow devices to be put into deeper low-power states via ACPI if
both _SxD and _SxW are missing (Daniel Drake).- Reorganize the core ACPI suspend-to-idle wakeup code to avoid a
keyboard wakeup issue on Asus UX331UA (Chris Chiu).- Prevent the PCMCIA library code from aborting suspend-to-idle due
to noirq suspend failures resulting from incorrect assumptions
(Rafael Wysocki).- Add coupled cpuidle supprt to the Exynos3250 platform (Marek
Szyprowski).- Add new sysfs file to make it easier to specify the image storage
location during hibernation (Mario Limonciello).- Add sysfs files for collecting suspend-to-idle usage and time
statistics for CPU idle states (Rafael Wysocki).- Update the pm-graph utilities (Todd Brandt).
- Reduce the kernel log noise related to reporting Low-power Idle
constraings by the ACPI system suspend code (Rafael Wysocki).- Make it easier to distinguish dedicated wakeup IRQs in the
/proc/interrupts output (Tony Lindgren).- Add the frequency table validation in cpufreq to the core and drop
it from a number of cpufreq drivers (Viresh Kumar).- Drop "cooling-{min|max}-level" for CPU nodes from a couple of DT
bindings (Viresh Kumar).- Clean up the CPU online error code path in the cpufreq core (Viresh
Kumar).- Fix assorted issues in the SCPI, CPPC, mediatek and tegra186
cpufreq drivers (Arnd Bergmann, Chunyu Hu, George Cherian, Viresh
Kumar).- Drop memory allocation error messages from a few places in cpufreq
and cpuildle drivers (Markus Elfring)"* tag 'pm-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (56 commits)
ACPI / PM: Fix keyboard wakeup from suspend-to-idle on ASUS UX331UA
cpufreq: CPPC: Use transition_delay_us depending transition_latency
PM / hibernate: Change message when writing to /sys/power/resume
PM / hibernate: Make passing hibernate offsets more friendly
cpuidle: poll_state: Avoid invoking local_clock() too often
PM: cpuidle/suspend: Add s2idle usage and time state attributes
cpuidle: Enable coupled cpuidle support on Exynos3250 platform
cpuidle: poll_state: Add time limit to poll_idle()
cpufreq: tegra186: Don't validate the frequency table twice
cpufreq: speedstep: Don't validate the frequency table twice
cpufreq: sparc: Don't validate the frequency table twice
cpufreq: sh: Don't validate the frequency table twice
cpufreq: sfi: Don't validate the frequency table twice
cpufreq: scpi: Don't validate the frequency table twice
cpufreq: sc520: Don't validate the frequency table twice
cpufreq: s3c24xx: Don't validate the frequency table twice
cpufreq: qoirq: Don't validate the frequency table twice
cpufreq: pxa: Don't validate the frequency table twice
cpufreq: ppc_cbe: Don't validate the frequency table twice
cpufreq: powernow: Don't validate the frequency table twice
...