This kunit update for Linux 5.6-rc1 consists of:
-- Support for building kunit as a module from Alan Maguire
-- AppArmor KUnit tests for policy unpack from Mike Salvatore
-----BEGIN PGP SIGNATURE-----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=AFO4
-----END PGP SIGNATURE-----
Merge tag 'linux-kselftest-5.6-rc1-kunit' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull Kselftest kunit updates from Shuah Khan:
"This kunit update consists of:
- Support for building kunit as a module from Alan Maguire
- AppArmor KUnit tests for policy unpack from Mike Salvatore"
* tag 'linux-kselftest-5.6-rc1-kunit' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: building kunit as a module breaks allmodconfig
kunit: update documentation to describe module-based build
kunit: allow kunit to be loaded as a module
kunit: remove timeout dependence on sysctl_hung_task_timeout_seconds
kunit: allow kunit tests to be loaded as a module
kunit: hide unexported try-catch interface in try-catch-impl.h
kunit: move string-stream.h to lib/kunit
apparmor: add AppArmor KUnit tests for policy unpack
Here is a small set of changes for 5.6-rc1 for the driver core and some
firmware subsystem changes.
Included in here are:
- device.h splitup like you asked for months ago
- devtmpfs minor cleanups
- firmware core minor changes
- debugfs fix for lockdown mode
- kernfs cleanup fix
- cpu topology minor fix
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXjFL1g8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ymzfwCgpHAaFeiF1u2XS1pvfySssOUeQ8sAoMXWWgr4
BHms+ey3TaUnzm38dxk8
=Xv9r
-----END PGP SIGNATURE-----
Merge tag 'driver-core-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is a small set of changes for 5.6-rc1 for the driver core and
some firmware subsystem changes.
Included in here are:
- device.h splitup like you asked for months ago
- devtmpfs minor cleanups
- firmware core minor changes
- debugfs fix for lockdown mode
- kernfs cleanup fix
- cpu topology minor fix
All of these have been in linux-next for a while with no reported
issues"
* tag 'driver-core-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (22 commits)
firmware: Rename FW_OPT_NOFALLBACK to FW_OPT_NOFALLBACK_SYSFS
devtmpfs: factor out common tail of devtmpfs_{create,delete}_node
devtmpfs: initify a bit
devtmpfs: simplify initialization of mount_dev
devtmpfs: factor out setup part of devtmpfsd()
devtmpfs: fix theoretical stale pointer deref in devtmpfsd()
driver core: platform: fix u32 greater or equal to zero comparison
cpu-topology: Don't error on more than CONFIG_NR_CPUS CPUs in device tree
debugfs: Return -EPERM when locked down
driver core: Print device when resources present in really_probe()
driver core: Fix test_async_driver_probe if NUMA is disabled
driver core: platform: Prevent resouce overflow from causing infinite loops
fs/kernfs/dir.c: Clean code by removing always true condition
component: do not dereference opaque pointer in debugfs
drivers/component: remove modular code
debugfs: Fix warnings when building documentation
device.h: move 'struct driver' stuff out to device/driver.h
device.h: move 'struct class' stuff out to device/class.h
device.h: move 'struct bus' stuff out to device/bus.h
device.h: move dev_printk()-like functions to dev_printk.h
...
Add support for reference properties in sofrware nodes (Dmitry
Torokhov) and a basic test for property entries along with fixes
on top of it (Dmitry Torokhov, Qian Cai, Alan Maguire).
-----BEGIN PGP SIGNATURE-----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=wnoj
-----END PGP SIGNATURE-----
Merge tag 'devprop-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull device properties framework updates from Rafael Wysocki:
"Add support for reference properties in sofrware nodes (Dmitry
Torokhov) and a basic test for property entries along with fixes on
top of it (Dmitry Torokhov, Qian Cai, Alan Maguire)"
* tag 'devprop-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
software node: introduce CONFIG_KUNIT_DRIVER_PE_TEST
usb: dwc3: use proper initializers for property entries
drivers/base/test: fix global-out-of-bounds error
software node: add basic tests for property entries
software node: remove separate handling of references
platform/x86: intel_cht_int33fe: use inline reference properties
software node: implement reference properties
software node: allow embedding of small arrays into property_entry
software node: replace is_array with is_inline
- Update the ACPI processor driver in order to export
acpi_processor_evaluate_cst() to the code outside of it, add
ACPI support to the intel_idle driver based on that and clean
up that driver somewhat (Rafael Wysocki).
- Add an admin guide document for the intel_idle driver (Rafael
Wysocki).
- Clean up cpuidle core and drivers, enable compilation testing
for some of them (Benjamin Gaignard, Krzysztof Kozlowski, Rafael
Wysocki, Yangtao Li).
- Fix reference counting of OPP (operating performance points) table
structures (Viresh Kumar).
- Add support for CPR (Core Power Reduction) to the AVS (Adaptive
Voltage Scaling) subsystem (Niklas Cassel, Colin Ian King,
YueHaibing).
- Add support for TigerLake Mobile and JasperLake to the Intel RAPL
power capping driver (Zhang Rui).
- Update cpufreq drivers:
* Add i.MX8MP support to imx-cpufreq-dt (Anson Huang).
* Fix usage of a macro in loongson2_cpufreq (Alexandre Oliva).
* Fix cpufreq policy reference counting issues in s3c and
brcmstb-avs (chenqiwu).
* Fix ACPI table reference counting issue and HiSilicon quirk
handling in the CPPC driver (Hanjun Guo).
* Clean up spelling mistake in intel_pstate (Harry Pan).
* Convert the kirkwood and tegra186 drivers to using
devm_platform_ioremap_resource() (Yangtao Li).
- Update devfreq core:
* Add 'name' sysfs attribute for devfreq devices (Chanwoo Choi).
* Clean up the handing of transition statistics and allow them
to be reset by writing 0 to the 'trans_stat' devfreq device
attribute in sysfs (Kamil Konieczny).
* Add 'devfreq_summary' to debugfs (Chanwoo Choi).
* Clean up kerneldoc comments and Kconfig indentation (Krzysztof
Kozlowski, Randy Dunlap).
- Update devfreq drivers:
* Add dynamic scaling for the imx8m DDR controller and clean up
imx8m-ddrc (Leonard Crestez, YueHaibing).
* Fix DT node reference counting and nitialization error code path
in rk3399_dmc and add COMPILE_TEST and HAVE_ARM_SMCCC dependency
for it (Chanwoo Choi, Yangtao Li).
* Fix DT node reference counting in rockchip-dfi and make it use
devm_platform_ioremap_resource() (Yangtao Li).
* Fix excessive stack usage in exynos-ppmu (Arnd Bergmann).
* Fix initialization error code paths in exynos-bus (Yangtao Li).
* Clean up exynos-bus and exynos somewhat (Artur Świgoń, Krzysztof
Kozlowski).
- Add tracepoints for tracking usage_count updates unrelated to
status changes in PM-runtime (Michał Mirosław).
- Add sysfs attribute to control the "sync on suspend" behavior
during system-wide suspend (Jonas Meurer).
- Switch system-wide suspend tests over to 64-bit time (Alexandre
Belloni).
- Make wakeup sources statistics in debugfs cover deleted ones which
used to be the case some time ago (zhuguangqing).
- Clean up computations carried out during hibernation, update
messages related to hibernation and fix a spelling mistake in one
of them (Wen Yang, Luigi Semenzato, Colin Ian King).
- Add mailmap entry for maintainer e-mail address that has not been
functional for several years (Rafael Wysocki).
-----BEGIN PGP SIGNATURE-----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=g48u
-----END PGP SIGNATURE-----
Merge tag 'pm-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These add ACPI support to the intel_idle driver along with an admin
guide document for it, add support for CPR (Core Power Reduction) to
the AVS (Adaptive Voltage Scaling) subsystem, add new hardware support
in a few places, add some new sysfs attributes, debugfs files and
tracepoints, fix bugs and clean up a bunch of things all over.
Specifics:
- Update the ACPI processor driver in order to export
acpi_processor_evaluate_cst() to the code outside of it, add ACPI
support to the intel_idle driver based on that and clean up that
driver somewhat (Rafael Wysocki).
- Add an admin guide document for the intel_idle driver (Rafael
Wysocki).
- Clean up cpuidle core and drivers, enable compilation testing for
some of them (Benjamin Gaignard, Krzysztof Kozlowski, Rafael
Wysocki, Yangtao Li).
- Fix reference counting of OPP (operating performance points) table
structures (Viresh Kumar).
- Add support for CPR (Core Power Reduction) to the AVS (Adaptive
Voltage Scaling) subsystem (Niklas Cassel, Colin Ian King,
YueHaibing).
- Add support for TigerLake Mobile and JasperLake to the Intel RAPL
power capping driver (Zhang Rui).
- Update cpufreq drivers:
- Add i.MX8MP support to imx-cpufreq-dt (Anson Huang).
- Fix usage of a macro in loongson2_cpufreq (Alexandre Oliva).
- Fix cpufreq policy reference counting issues in s3c and
brcmstb-avs (chenqiwu).
- Fix ACPI table reference counting issue and HiSilicon quirk
handling in the CPPC driver (Hanjun Guo).
- Clean up spelling mistake in intel_pstate (Harry Pan).
- Convert the kirkwood and tegra186 drivers to using
devm_platform_ioremap_resource() (Yangtao Li).
- Update devfreq core:
- Add 'name' sysfs attribute for devfreq devices (Chanwoo Choi).
- Clean up the handing of transition statistics and allow them to
be reset by writing 0 to the 'trans_stat' devfreq device
attribute in sysfs (Kamil Konieczny).
- Add 'devfreq_summary' to debugfs (Chanwoo Choi).
- Clean up kerneldoc comments and Kconfig indentation (Krzysztof
Kozlowski, Randy Dunlap).
- Update devfreq drivers:
- Add dynamic scaling for the imx8m DDR controller and clean up
imx8m-ddrc (Leonard Crestez, YueHaibing).
- Fix DT node reference counting and nitialization error code path
in rk3399_dmc and add COMPILE_TEST and HAVE_ARM_SMCCC dependency
for it (Chanwoo Choi, Yangtao Li).
- Fix DT node reference counting in rockchip-dfi and make it use
devm_platform_ioremap_resource() (Yangtao Li).
- Fix excessive stack usage in exynos-ppmu (Arnd Bergmann).
- Fix initialization error code paths in exynos-bus (Yangtao Li).
- Clean up exynos-bus and exynos somewhat (Artur Świgoń, Krzysztof
Kozlowski).
- Add tracepoints for tracking usage_count updates unrelated to
status changes in PM-runtime (Michał Mirosław).
- Add sysfs attribute to control the "sync on suspend" behavior
during system-wide suspend (Jonas Meurer).
- Switch system-wide suspend tests over to 64-bit time (Alexandre
Belloni).
- Make wakeup sources statistics in debugfs cover deleted ones which
used to be the case some time ago (zhuguangqing).
- Clean up computations carried out during hibernation, update
messages related to hibernation and fix a spelling mistake in one
of them (Wen Yang, Luigi Semenzato, Colin Ian King).
- Add mailmap entry for maintainer e-mail address that has not been
functional for several years (Rafael Wysocki)"
* tag 'pm-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (83 commits)
cpufreq: loongson2_cpufreq: adjust cpufreq uses of LOONGSON_CHIPCFG
intel_idle: Clean up irtl_2_usec()
intel_idle: Move 3 functions closer to their callers
intel_idle: Annotate initialization code and data structures
intel_idle: Move and clean up intel_idle_cpuidle_devices_uninit()
intel_idle: Rearrange intel_idle_cpuidle_driver_init()
intel_idle: Clean up NULL pointer check in intel_idle_init()
intel_idle: Fold intel_idle_probe() into intel_idle_init()
intel_idle: Eliminate __setup_broadcast_timer()
cpuidle: fix cpuidle_find_deepest_state() kerneldoc warnings
cpuidle: sysfs: fix warnings when compiling with W=1
cpuidle: coupled: fix warnings when compiling with W=1
cpufreq: brcmstb-avs: fix imbalance of cpufreq policy refcount
PM: suspend: Add sysfs attribute to control the "sync on suspend" behavior
PM / devfreq: Add debugfs support with devfreq_summary file
Documentation: admin-guide: PM: Add intel_idle document
cpuidle: arm: Enable compile testing for some of drivers
PM-runtime: add tracepoints for usage_count changes
cpufreq: intel_pstate: fix spelling mistake: "Whethet" -> "Whether"
PM: hibernate: fix spelling mistake "shapshot" -> "snapshot"
...
* pm-core:
PM-runtime: add tracepoints for usage_count changes
* powercap:
powercap/intel_rapl: add support for JasperLake
x86/cpu: Add Jasper Lake to Intel family
powercap/intel_rapl: add support for TigerLake Mobile
* pm-opp:
opp: Replace list_kref with a local counter
opp: Free static OPPs on errors while adding them
* pm-avs:
power: avs: qcom-cpr: remove duplicated include from qcom-cpr.c
power: avs: fix uninitialized error return on failed cpr_read_fuse_uV() call
power: avs: qcom-cpr: make cpr_get_opp_hz_for_req() static
power: avs: qcom-cpr: remove set but unused variable
power: avs: qcom-cpr: make sure that regmap is available
power: avs: qcom-cpr: fix unsigned expression compared with zero
power: avs: qcom-cpr: fix invalid printk specifier in debug print
power: avs: Add support for CPR (Core Power Reduction)
dt-bindings: power: avs: Add support for CPR (Core Power Reduction)
* pm-misc:
mailmap: Add entry for <rjw@sisk.pl>
* pm-cpufreq:
cpufreq: loongson2_cpufreq: adjust cpufreq uses of LOONGSON_CHIPCFG
cpufreq: brcmstb-avs: fix imbalance of cpufreq policy refcount
cpufreq: intel_pstate: fix spelling mistake: "Whethet" -> "Whether"
cpufreq: s3c: fix unbalances of cpufreq policy refcount
cpufreq: imx-cpufreq-dt: Add i.MX8MP support
cpufreq: Use imx-cpufreq-dt for i.MX8MP's speed grading
cpufreq: tegra186: convert to devm_platform_ioremap_resource
cpufreq: kirkwood: convert to devm_platform_ioremap_resource
cpufreq: CPPC: put ACPI table after using it
cpufreq : CPPC: Break out if HiSilicon CPPC workaround is matched
* pm-sleep:
PM: suspend: Add sysfs attribute to control the "sync on suspend" behavior
PM: hibernate: fix spelling mistake "shapshot" -> "snapshot"
PM: hibernate: Add more logging on hibernation failure
PM: hibernate: improve arithmetic division in preallocate_highmem_fraction()
PM: wakeup: Show statistics for deleted wakeup sources again
PM: sleep: Switch to rtc_time64_to_tm()/rtc_tm_to_time64()
This is a preparation patch for adding a new platform fallback mechanism,
which will have its own enable/disable FW_OPT_xxx option.
Note this also fixes a typo in one of the re-wordwrapped comments:
enfoce -> enforce.
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20200115163554.101315-4-hdegoede@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There's some common boilerplate in devtmpfs_{create,delete}_node, put
that in a little helper.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Link: https://lore.kernel.org/r/20200115184154.3492-6-linux@rasmusvillemoes.dk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
devtmpfs_mount() is only called from prepare_namespace() in
init/do_mounts.c, which is an __init function, so devtmpfs_mount() can
also be moved to .init.text.
Then the mount_dev static variable is only referenced from __init
functions (devtmpfs_mount and its initializer function mount_param).
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Link: https://lore.kernel.org/r/20200115184154.3492-5-linux@rasmusvillemoes.dk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Factor out the setup part of devtmpfsd() to make it a bit easier to
see that we always call setup_done() exactly once (provided of course
the kthread is succesfully created).
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Link: https://lore.kernel.org/r/20200115184154.3492-3-linux@rasmusvillemoes.dk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
After complete(&setup_done), devtmpfs_init proceeds and may actually
return, invalidating the *err pointer, before devtmpfsd() proceeds to
reading back *err.
This is of course completely theoretical since the error conditions
never trigger in practice, and even if they did, nobody cares about
the exit value from a kernel thread, so it doesn't matter if we happen
to read back some garbage from some other stack frame. Still, this
isn't a pattern that should be copy-pasted, so fix it.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Link: https://lore.kernel.org/r/20200115184154.3492-2-linux@rasmusvillemoes.dk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently the check that a u32 variable i is >= 0 is always true because
the unsigned variable will never be negative, causing the loop to run
forever. Fix this by changing the pre-decrement check to a zero check on
i followed by a decrement of i.
Addresses-Coverity: ("Unsigned compared against 0")
Fixes: 39cc539f90 ("driver core: platform: Prevent resouce overflow from causing infinite loops")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20200116175758.88396-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When checking if a register block is writable we must ensure that the
block does not start with or contain a non incrementing register.
Fixes: 8b9f9d4dc5 ("regmap: verify if register is writeable before writing operations")
Signed-off-by: Ben Whitten <ben.whitten@gmail.com>
Link: https://lore.kernel.org/r/20200118205625.14532-1-ben.whitten@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
When the kernel is configured with CONFIG_NR_CPUS smaller than the
number of CPU nodes in the device tree(DT), all the CPU nodes parsing
done to fetch topology information will fail. This is not reasonable
as it is legal to have all the physical CPUs in the system in the DT.
Let us just skip such CPU DT nodes that are not used in the kernel
rather than returning an error.
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Zeng Tao <prime.zeng@hisilicon.com>
Link: https://lore.kernel.org/r/1579225973-32423-1-git-send-email-prime.zeng@hisilicon.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently the property entry kunit tests are built if CONFIG_KUNIT=y.
This will cause warnings when merged with the kunit tree that now
supports tristate CONFIG_KUNIT. While the tests appear to compile
as a module, we get a warning about missing module license.
It's better to have a per-test suite CONFIG variable so that
we can do selective building of kunit-based suites, and can
also avoid merge issues like this.
Fixes: c032ace71c ("software node: add basic tests for property entries")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Intel Software Developer's Manual, volume 3, chapter 9.11.6 says:
"Note that the microcode update must be aligned on a 16-byte boundary
and the size of the microcode update must be 1-KByte granular"
When early-load Intel microcode is loaded from initramfs, userspace tool
'iucode_tool' has already 16-byte aligned those microcode bits in that
initramfs image. Image that was created something like this:
iucode_tool --write-earlyfw=FOO.cpio microcode-files...
However, when early-load Intel microcode is loaded from built-in
firmware BLOB using CONFIG_EXTRA_FIRMWARE= kernel config option, that
16-byte alignment is not guaranteed.
Fix this by forcing all built-in firmware BLOBs to 16-byte alignment.
[ If we end up having other firmware with much bigger alignment
requirements, we might need to introduce some method for the firmware
to specify it, this is the minimal "just increase the alignment a bit
to account for this one special case" patch - Linus ]
Signed-off-by: Jari Ruusu <jari.ruusu@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If a device already has devres items attached before probing, a warning
backtrace is printed. However, this backtrace does not reveal the
offending device, leaving the user uninformed. Furthermore, using
WARN_ON() causes systems with panic-on-warn to reboot.
Fix this by replacing the WARN_ON() by a dev_crit() message.
Abort probing the device, to prevent doing more damage to the device's
resources.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20191206132219.28908-1-geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since commit 57ea974fb8 ("driver core: Rewrite test_async_driver_probe
to cover serialization and NUMA affinity"), running the test with NUMA
disabled results in warning messages similar to the following.
test_async_driver test_async_driver.12: NUMA node mismatch -1 != 0
If CONFIG_NUMA=n, dev_to_node(dev) returns -1, and numa_node_id()
returns 0. Both are widely used, so it appears risky to change return
values. Augment the check with IS_ENABLED(CONFIG_NUMA) instead
to fix the problem.
Cc: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Fixes: 57ea974fb8 ("driver core: Rewrite test_async_driver_probe to cover serialization and NUMA affinity")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable <stable@vger.kernel.org>
Acked-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Link: https://lore.kernel.org/r/20191127202453.28087-1-linux@roeck-us.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
num_resources in the platform_device struct is declared as a u32. The
for loops that iterate over num_resources use an int as the counter,
which can cause infinite loops on architectures with smaller ints.
Change the loop counters to u32.
Signed-off-by: Simon Schwartz <kern.simon@theschwartz.xyz>
Link: https://lore.kernel.org/r/2201ce63a2a171ffd2ed14e867875316efcf71db.camel@theschwartz.xyz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The match data does not have to be a struct device pointer, and indeed
very often is not. Attempt to treat it as such easily results in a
crash.
For the components that are not registered, we don't know which device
is missing. Once it it is there, we can use the struct component to get
the device and whether it's bound or not.
Fixes: 59e73854b5 ('component: add debugfs support')
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Cc: stable <stable@vger.kernel.org>
Cc: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Link: https://lore.kernel.org/r/20191118115431.63626-1-lkundrak@v3.sk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add tracepoints to remaining places where device's power.usage_count
is changed.
This helps debugging where and why autosuspend is prevented.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
kunit tests that do not support module build should depend
on KUNIT=y rather than just KUNIT in Kconfig, otherwise
they will trigger compilation errors for "make allmodconfig"
builds.
Fixes: 9fe124bf1b ("kunit: allow kunit to be loaded as a module")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
As tests are added to kunit, it will become less feasible to execute
all built tests together. By supporting modular tests we provide
a simple way to do selective execution on a running system; specifying
CONFIG_KUNIT=y
CONFIG_KUNIT_EXAMPLE_TEST=m
...means we can simply "insmod example-test.ko" to run the tests.
To achieve this we need to do the following:
o export the required symbols in kunit
o string-stream tests utilize non-exported symbols so for now we skip
building them when CONFIG_KUNIT_TEST=m.
o drivers/base/power/qos-test.c contains a few unexported interface
references, namely freq_qos_read_value() and freq_constraints_init().
Both of these could be potentially defined as static inline functions
in include/linux/pm_qos.h, but for now we simply avoid supporting
module build for that test suite.
o support a new way of declaring test suites. Because a module cannot
do multiple late_initcall()s, we provide a kunit_test_suites() macro
to declare multiple suites within the same module at once.
o some test module names would have been too general ("test-test"
and "example-test" for kunit tests, "inode-test" for ext4 tests);
rename these as appropriate ("kunit-test", "kunit-example-test"
and "ext4-inode-test" respectively).
Also define kunit_test_suite() via kunit_test_suites()
as callers in other trees may need the old definition.
Co-developed-by: Knut Omang <knut.omang@oracle.com>
Signed-off-by: Knut Omang <knut.omang@oracle.com>
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Acked-by: Theodore Ts'o <tytso@mit.edu> # for ext4 bits
Acked-by: David Gow <davidgow@google.com> # For list-test
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Commit c032ace71c ("software node: add basic tests for property
entries") introduced a global-out-of-bounds error because it forgot to
add a terminator of "nodes "for software_node_register_nodes() to
process.
# Subtest: property-entry
1..7
ok 1 - pe_test_uints
ok 2 - pe_test_uint_arrays
ok 3 - pe_test_strings
ok 4 - pe_test_bool
ok 5 - pe_test_move_inline_u8
ok 6 - pe_test_move_inline_str
==================================================================
BUG: KASAN: global-out-of-bounds in
software_node_register_nodes+0x41/0x80
Read of size 8 at addr ffffffff989ef250 by task kunit_try_catch/316
CPU: 17 PID: 316 Comm: kunit_try_catch Not tainted
5.5.0-rc4-next-20200106+ #1
Hardware name: HPE ProLiant DL385 Gen10/ProLiant DL385 Gen10, BIOS A40
03/09/2018
Call Trace:
dump_stack+0xa0/0xea
print_address_description.constprop.5.cold.7+0x64/0x384
__kasan_report.cold.8+0x7a/0xc0
kasan_report+0x12/0x20
__asan_load8+0x71/0xa0
software_node_register_nodes+0x41/0x80
pe_test_reference+0x1eb/0x1200
kunit_try_run_case+0x6b/0xd1
kunit_generic_run_threadfn_adapter+0x29/0x50
kthread+0x1e6/0x210
ret_from_fork+0x27/0x50
The buggy address belongs to the variable:
nodes.21544+0x30/0x920
Memory state around the buggy address:
ffffffff989ef100: fa fa fa fa 00 04 fa fa fa fa fa fa 00 00 00 00
ffffffff989ef180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffffff989ef200: fa fa fa fa 00 00 00 00 00 00 fa fa fa fa fa fa
^
ffffffff989ef280: 00 06 fa fa fa fa fa fa 00 00 04 fa fa fa fa fa
ffffffff989ef300: 00 00 fa fa fa fa fa fa 00 05 fa fa fa fa fa fa
==================================================================
Disabling lock debugging due to kernel taint
ok 7 - pe_test_reference
ok 8 - property-entry
Fixes: c032ace71c ("software node: add basic tests for property entries")
Signed-off-by: Qian Cai <cai@lca.pw>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
After commit 00ee22c289 (PM / wakeup: Use seq_open() to show wakeup
stats), print_wakeup_source_stats(m, &deleted_ws) is not called from
wakeup_sources_stats_seq_show() any more.
Because deleted_ws is one of the wakeup sources, it should be shown
too, so add it to the end of all other wakeup sources.
Signed-off-by: zhuguangqing <zhuguangqing@xiaomi.com>
[ rjw: Subject & changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This adds tests for creating software nodes with properties supplied by
PROPERTY_ENTRY_XXX() macros and fetching and validating data from said
nodes/properties.
We are using KUnit framework for the tests.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
device.h has everything and the kitchen sink when it comes to struct
device things, so split out the struct driver things things to a
separate .h file to make things easier to maintain and manage over time.
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191209193303.1694546-7-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
device.h has everything and the kitchen sink when it comes to struct
device things, so split out the struct class things things to a separate
.h file to make things easier to maintain and manage over time.
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191209193303.1694546-6-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
device.h has everything and the kitchen sink when it comes to struct
device things, so split out the struct bus things things to a separate
.h file to make things easier to maintain and manage over time.
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191209193303.1694546-5-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The devtmpfs functions do not need to be in device.h as only the driver
core uses them, so move them to the private .h file for the driver core.
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191209193303.1694546-3-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull ksys_mount() and ksys_dup() removal from Dominik Brodowski:
"This small series replaces all in-kernel calls to the
userspace-focused ksys_mount() and ksys_dup() with calls to
kernel-centric functions:
For each replacement of ksys_mount() with do_mount(), one needs to
verify that the first and third parameter (char *dev_name, char *type)
are strings allocated in kernelspace and that the fifth parameter
(void *data) is either NULL or refers to a full page (only occurence
in init/do_mounts.c::do_mount_root()). The second and fourth
parameters (char *dir_name, unsigned long flags) are passed by
ksys_mount() to do_mount() unchanged, and therefore do not require
particular care.
Moreover, instead of pretending to be userspace, the opening of
/dev/console as stdin/stdout/stderr can be implemented using in-kernel
functions as well. Thereby, ksys_dup() can be removed for good"
[ This doesn't get rid of the special "kernel init runs with KERNEL_DS"
case, but it at least removes _some_ of the users of "treat kernel
pointers as user pointers for our magical init sequence".
One day we'll hopefully be rid of it all, and can initialize our
init_thread addr_limit to USER_DS. - Linus ]
* 'remove-ksys-mount-dup' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux:
fs: remove ksys_dup()
init: unify opening /dev/console as stdin/stdout/stderr
init: use do_mount() instead of ksys_mount()
initrd: use do_mount() instead of ksys_mount()
devtmpfs: use do_mount() instead of ksys_mount()
In devtmpfs, do_mount() can be called directly instead of complex wrapping
by ksys_mount():
- the first and third arguments are const strings in the kernel,
and do not need to be copied over from userspace;
- the fifth argument is NULL, and therefore no page needs to be
copied over from userspace;
- the second and fourth argument are passed through anyway.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
SuperH images crash too eearly to display any console output. Bisect
points to commit 507fd01d53 ("drivers: move the early platform device
support to arch/sh"). An analysis of that patch suggests that
early_platform_cleanup() is now called at the wrong time. Restoring its
call point fixes the problem.
Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Fixes: 507fd01d53 ("drivers: move the early platform device support to arch/sh")
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Rob Landley <rob@landley.net>
Link: https://lore.kernel.org/r/20191203205852.15659-1-linux@roeck-us.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Various driver updates for platforms:
- A larger set of work on Tegra 2/3 around memory controller and
regulator features, some fuse cleanups, etc..
- MMP platform drivers, in particular for USB PHY, and other smaller
additions.
- Samsung Exynos 5422 driver for DMC (dynamic memory configuration),
and ASV (adaptive voltage), allowing the platform to run at more
optimal operating points.
- Misc refactorings and support for RZ/G2N and R8A774B1 from Renesas
- Clock/reset control driver for TI/OMAP
- Meson-A1 reset controller support
- Qualcomm sdm845 and sda845 SoC IDs for socinfo
-----BEGIN PGP SIGNATURE-----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=dk7w
-----END PGP SIGNATURE-----
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC driver updates from Olof Johansson:
"Various driver updates for platforms:
- A larger set of work on Tegra 2/3 around memory controller and
regulator features, some fuse cleanups, etc..
- MMP platform drivers, in particular for USB PHY, and other smaller
additions.
- Samsung Exynos 5422 driver for DMC (dynamic memory configuration),
and ASV (adaptive voltage), allowing the platform to run at more
optimal operating points.
- Misc refactorings and support for RZ/G2N and R8A774B1 from Renesas
- Clock/reset control driver for TI/OMAP
- Meson-A1 reset controller support
- Qualcomm sdm845 and sda845 SoC IDs for socinfo"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (150 commits)
firmware: arm_scmi: Fix doorbell ring logic for !CONFIG_64BIT
soc: fsl: add RCPM driver
dt-bindings: fsl: rcpm: Add 'little-endian' and update Chassis definition
memory: tegra: Consolidate registers definition into common header
memory: tegra: Ensure timing control debug features are disabled
memory: tegra: Introduce Tegra30 EMC driver
memory: tegra: Do not handle error from wait_for_completion_timeout()
memory: tegra: Increase handshake timeout on Tegra20
memory: tegra: Print a brief info message about EMC timings
memory: tegra: Pre-configure debug register on Tegra20
memory: tegra: Include io.h instead of iopoll.h
memory: tegra: Adapt for Tegra20 clock driver changes
memory: tegra: Don't set EMC rate to maximum on probe for Tegra20
memory: tegra: Add gr2d and gr3d to DRM IOMMU group
memory: tegra: Set DMA mask based on supported address bits
soc: at91: Add Atmel SFR SN (Serial Number) support
memory: atmel-ebi: switch to SPDX license identifiers
memory: atmel-ebi: move NUM_CS definition inside EBI driver
soc: mediatek: Refactor bus protection control
soc: mediatek: Refactor sram control
...
Merge more updates from Andrew Morton:
"Most of the rest of MM and various other things. Some Kconfig rework
still awaits merges of dependent trees from linux-next.
Subsystems affected by this patch series: mm/hotfixes, mm/memcg,
mm/vmstat, mm/thp, procfs, sysctl, misc, notifiers, core-kernel,
bitops, lib, checkpatch, epoll, binfmt, init, rapidio, uaccess, kcov,
ubsan, ipc, bitmap, mm/pagemap"
* akpm: (86 commits)
mm: remove __ARCH_HAS_4LEVEL_HACK and include/asm-generic/4level-fixup.h
um: add support for folded p4d page tables
um: remove unused pxx_offset_proc() and addr_pte() functions
sparc32: use pgtable-nopud instead of 4level-fixup
parisc/hugetlb: use pgtable-nopXd instead of 4level-fixup
parisc: use pgtable-nopXd instead of 4level-fixup
nds32: use pgtable-nopmd instead of 4level-fixup
microblaze: use pgtable-nopmd instead of 4level-fixup
m68k: mm: use pgtable-nopXd instead of 4level-fixup
m68k: nommu: use pgtable-nopud instead of 4level-fixup
c6x: use pgtable-nopud instead of 4level-fixup
arm: nommu: use pgtable-nopud instead of 4level-fixup
alpha: use pgtable-nopud instead of 4level-fixup
gpio: pca953x: tighten up indentation
gpio: pca953x: convert to use bitmap API
gpio: pca953x: use input from regs structure in pca953x_irq_pending()
gpio: pca953x: remove redundant variable and check in IRQ handler
lib/bitmap: introduce bitmap_replace() helper
lib/test_bitmap: fix comment about this file
lib/test_bitmap: move exp1 and exp2 upper for others to use
...
Statistics in vmstat is combined from counters with different structure,
but names for them are merged into one array.
This patch adds trivial helpers to get name for each item:
const char *zone_stat_name(enum zone_stat_item item);
const char *numa_stat_name(enum numa_stat_item item);
const char *node_stat_name(enum node_stat_item item);
const char *writeback_stat_name(enum writeback_stat_item item);
const char *vm_event_name(enum vm_event_item item);
Names for enum writeback_stat_item are folded in the middle of
vmstat_text so this patch moves declaration into header to calculate
offset of following items.
Also this patch reuses piece of node stat names for lru list names:
const char *lru_list_name(enum lru_list lru);
This returns common lru list names: "inactive_anon", "active_anon",
"inactive_file", "active_file", "unevictable".
[khlebnikov@yandex-team.ru: do not use size of vmstat_text as count of /proc/vmstat items]
Link: http://lkml.kernel.org/r/157152151769.4139.15423465513138349343.stgit@buzz
Link: https://lore.kernel.org/linux-mm/cd1c42ae-281f-c8a8-70ac-1d01d417b2e1@infradead.org/T/#u
Link: http://lkml.kernel.org/r/157113012325.453.562783073839432766.stgit@buzz
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: YueHaibing <yuehaibing@huawei.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Avoid a race condition in the ACPI EC driver that may cause
systems to be unable to leave suspend-to-idle (Rafael Wysocki).
- Drop the "disabled" field, which is redundant, from struct
cpuidle_state (Rafael Wysocki).
- Reintroduce device PM QoS frequency constraints (temporarily
introduced and than dropped during the 5.4 cycle) in preparation
for adding QoS support to devfreq (Leonard Crestez).
- Clean up indentation (in multiple places) and the cpuidle drivers
help text in Kconfig (Krzysztof Kozlowski, Randy Dunlap).
-----BEGIN PGP SIGNATURE-----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=KAyd
-----END PGP SIGNATURE-----
Merge tag 'pm-5.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull additional power management updates from Rafael Wysocki:
"These fix an ACPI EC driver bug exposed by the recent rework of the
suspend-to-idle code flow, reintroduce frequency constraints into
device PM QoS (in preparation for adding QoS support to devfreq), drop
a redundant field from struct cpuidle_state and clean up Kconfig in
some places.
Specifics:
- Avoid a race condition in the ACPI EC driver that may cause systems
to be unable to leave suspend-to-idle (Rafael Wysocki)
- Drop the "disabled" field, which is redundant, from struct
cpuidle_state (Rafael Wysocki)
- Reintroduce device PM QoS frequency constraints (temporarily
introduced and than dropped during the 5.4 cycle) in preparation
for adding QoS support to devfreq (Leonard Crestez)
- Clean up indentation (in multiple places) and the cpuidle drivers
help text in Kconfig (Krzysztof Kozlowski, Randy Dunlap)"
* tag 'pm-5.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: PM: s2idle: Rework ACPI events synchronization
ACPI: EC: Rework flushing of pending work
PM / devfreq: Add missing locking while setting suspend_freq
PM / QoS: Restore DEV_PM_QOS_MIN/MAX_FREQUENCY
PM / QoS: Reorder pm_qos/freq_qos/dev_pm_qos structs
PM / QoS: Initial kunit test
PM / QoS: Redefine FREQ_QOS_MAX_DEFAULT_VALUE to S32_MAX
power: avs: Fix Kconfig indentation
cpufreq: Fix Kconfig indentation
cpuidle: minor Kconfig help text fixes
cpuidle: Drop disabled field from struct cpuidle_state
cpuidle: Fix Kconfig indentation
Now that all users of references have moved to reference properties,
we can remove separate handling of references.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
It is possible to store references to software nodes in the same fashion as
other static properties, so that users do not need to define separate
structures:
static const struct software_node gpio_bank_b_node = {
.name = "B",
};
static const struct property_entry simone_key_enter_props[] = {
PROPERTY_ENTRY_U32("linux,code", KEY_ENTER),
PROPERTY_ENTRY_STRING("label", "enter"),
PROPERTY_ENTRY_REF("gpios", &gpio_bank_b_node, 123, GPIO_ACTIVE_LOW),
{ }
};
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
We should not conflate whether a property data is an array or a single
value with where it is stored (embedded into property_entry structure or
out-of-line). All single-value properties are in effect 1-element
arrays, and we can figure the amount of data stored in a property by
examining its length and the data type. And arrays can be as easily
stored in property entry instances as single values are, provided that
we have enough space (we have up to 8 bytes). We can embed:
- up to 8 bytes from U8 arrays
- up to 4 words
- up to 2 double words
- one U64 value
- one (on 64 bit architectures) or 2 (on 32 bit) strings.
This change also has an effect of switching properties with small amount
of data to embed it instead of keeping it separate when copying such
properties.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
We do not need a special flag to know if we are dealing with an
array, as we can get that data from ratio between element length and
the data size, but we do need a flag to know whether or not the data
is stored directly inside property_entry.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
[ rjw: Subject & changelog, struct property_entry kerneldoc ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The mem_sysfs_mutex isn't really helpful. Also, it's not really clear
what the mutex protects at all.
The device lists of the memory subsystem are protected separately. We
don't need that mutex when looking up. creating, or removing
independent devices. find_memory_block_by_id() will perform locking on
its own and grab a reference of the returned device.
At the time memory_dev_init() is called, we cannot have concurrent
hot(un)plug operations yet - we're still fairly early during boot. We
don't need any locking.
The creation/removal of memory block devices should be protected on a
higher level - especially using the device hotplug lock to avoid
documented issues (see Documentation/core-api/memory-hotplug.rst) - or
if that is reworked, using similar locking.
Protecting in the context of these functions only doesn't really make
sense. Especially, if we would have a situation where the same memory
blocks are created/deleted at the same time, there is something horribly
going wrong (imagining adding/removing a DIMM at the same time from two
call paths) - after the functions succeeded something else in the
callers would blow up (e.g., create_memory_block_devices() succeeded but
there are no memory block devices anymore).
All relevant call paths (except when adding memory early during boot via
ACPI, which is now documented) hold the device hotplug lock when adding
memory, and when removing memory. Let's document that instead.
Add a simple safety net to create_memory_block_devices() in case we
would actually remove memory blocks while adding them, so we'll never
dereference a NULL pointer. Simplify memory_dev_init() now that the
lock is gone.
Link: http://lkml.kernel.org/r/20190925082621.4927-1-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently soft_offline_page() receives struct page, and its sibling
memory_failure() receives pfn. This discrepancy looks weird and makes
precheck on pfn validity tricky. So let's align them.
Link: http://lkml.kernel.org/r/20191016234706.GA5493@www9186uo.sakura.ne.jp
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Support for adding per-device frequency limits was removed in
commit 2aac8bdf7a ("PM: QoS: Drop frequency QoS types from device PM QoS")
after cpufreq switched to use a new "freq_constraints" construct.
Restore support for per-device freq limits but base this upon
freq_constraints. This is primarily meant to be used by the devfreq
subsystem.
This removes the "static" marking on freq_qos_apply but does not export
it for modules.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Linus Torvalds