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Commit 4b4cea91691d ("mm: vmscan: fix IO/refault regression in cache
workingset transition") introduced three new entries in memory stat
file:
- workingset_refault
- workingset_activate
- workingset_nodereclaim
This commit adds a corresponding description to the cgroup v2 docs.
Link: http://lkml.kernel.org/r/1494530293-31236-1-git-send-email-guro@fb.com
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Cc: Tigran Aivazian <aivazian.tigran@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull more power-supply updates from Sebastian Reichel:
"The power-supply subsystem has a few more changes for the v4.12 merge
window:
- New battery driver for AXP20X and AXP22X PMICs
- Improve max17042_battery for usage on x86
- Misc small cleanups & fixes"
* tag 'for-v4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (34 commits)
power: supply: cpcap-charger: Keep trickle charger bits disabled
power: supply: cpcap-charger: Fix enable for 3.8V charge setting
power: supply: cpcap-charger: Fix charge voltage configuration
power: supply: cpcap-charger: Fix charger name
power: supply: twl4030-charger: make twl4030_bci_property_is_writeable static
power: supply: sbs-battery: Add alert callback
mailmap: add Sebastian Reichel
power: supply: avoid unused twl4030-madc.h
power: supply: sbs-battery: Correct supply status with current draw
power: supply: sbs-battery: Don't ignore the first external power change
power: supply: pda_power: move from timer to delayed_work
power: supply: max17042_battery: Add support for the SCOPE property
power: supply: max17042_battery: Add support for the CHARGE_NOW property
power: supply: max17042_battery: Add support for the CHARGE_FULL_DESIGN property
power: supply: max17042_battery: mAh readings depend on r_sns value
power: supply: max17042_battery: Add support for the VOLT_MIN property
power: supply: max17042_battery: Add support for the TECHNOLOGY attribute
power: supply: max17042_battery: Add external_power_changed callback
power: supply: max17042_battery: Add support for the STATUS property
power: supply: max17042_battery: Add default platform_data fallback data
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The X-Powers AXP20X and AXP22X PMICs can have a battery as power supply.
This patch adds the DT binding documentation for the battery power
supply which gets various data from the PMIC, such as the battery status
(charging, discharging, full, dead), current max limit, current current,
battery capacity (in percentage), voltage max and min limits, current
voltage and battery capacity (in Ah).
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:
- Fix a problem where orderly_shutdown() is called for multiple times
due to multiple critical overheating events raised in a short period
by platform thermal driver. (Keerthy)
- Introduce a backup thermal shutdown mechanism, which invokes
kernel_power_off()/emergency_restart() directly, after
orderly_shutdown() being issued for certain amount of time(specified
via Kconfig). This is useful in certain conditions that userspace may
be unable to power off the system in a clean manner and leaves the
system in a critical state, like in the middle of driver probing
phase. (Keerthy)
- Introduce a new interface in thermal devfreq_cooling code so that the
driver can provide more precise data regarding actual power to the
thermal governor every time the power budget is calculated. (Lukasz
Luba)
- Introduce BCM 2835 soc thermal driver and northstar thermal driver,
within a new sub-folder. (Rafał Miłecki)
- Introduce DA9062/61 thermal driver. (Steve Twiss)
- Remove non-DT booting on TI-SoC driver. Also add support to fetching
coefficients from DT. (Keerthy)
- Refactorf RCAR Gen3 thermal driver. (Niklas Söderlund)
- Small fix on MTK and intel-soc-dts thermal driver. (Dawei Chien,
Brian Bian)
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (25 commits)
thermal: core: Add a back up thermal shutdown mechanism
thermal: core: Allow orderly_poweroff to be called only once
Thermal: Intel SoC DTS: Change interrupt request behavior
trace: thermal: add another parameter 'power' to the tracing function
thermal: devfreq_cooling: add new interface for direct power read
thermal: devfreq_cooling: refactor code and add get_voltage function
thermal: mt8173: minor mtk_thermal.c cleanups
thermal: bcm2835: move to the broadcom subdirectory
thermal: broadcom: ns: specify myself as MODULE_AUTHOR
thermal: da9062/61: Thermal junction temperature monitoring driver
Documentation: devicetree: thermal: da9062/61 TJUNC temperature binding
thermal: broadcom: add Northstar thermal driver
dt-bindings: thermal: add support for Broadcom's Northstar thermal
thermal: bcm2835: add thermal driver for bcm2835 SoC
dt-bindings: Add thermal zone to bcm2835-thermal example
thermal: rcar_gen3_thermal: add suspend and resume support
thermal: rcar_gen3_thermal: store device match data in private structure
thermal: rcar_gen3_thermal: enable hardware interrupts for trip points
thermal: rcar_gen3_thermal: record and check number of TSCs found
thermal: rcar_gen3_thermal: check that TSC exists before memory allocation
...
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git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal into thermal-soc
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Device tree binding information for DA9062 and DA9061 thermal junction
temperature monitor.
Binding descriptions for the DA9061 and DA9062 thermal TJUNC supervisor
device driver, using a single THERMAL_TRIP_HOT trip-wire and allowing for
a configurable polling period for over-temperature polling.
This patch also adds two examples, one for DA9062 and one for DA9061. The
DA9061 example uses a fall-back compatible string for the DA9062.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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This commit documents binding for thermal used in Northstar family SoCs.
There isn't any known Northstar device with active cooling system so DT
example has empty cooling-maps node. There is also no support for CPU
frequency throttling so I put only a critical trip in the example.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Add a thermal zone in order to make the example complete.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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orderly_poweroff is triggered when a graceful shutdown
of system is desired. This may be used in many critical states of the
kernel such as when subsystems detects conditions such as critical
temperature conditions. However, in certain conditions in system
boot up sequences like those in the middle of driver probes being
initiated, userspace will be unable to power off the system in a clean
manner and leaves the system in a critical state. In cases like these,
the /sbin/poweroff will return success (having forked off to attempt
powering off the system. However, the system overall will fail to
completely poweroff (since other modules will be probed) and the system
is still functional with no userspace (since that would have shut itself
off).
However, there is no clean way of detecting such failure of userspace
powering off the system. In such scenarios, it is necessary for a backup
workqueue to be able to force a shutdown of the system when orderly
shutdown is not successful after a configurable time period.
Reported-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target updates from Nicholas Bellinger:
"Things were a lot more calm than previously expected. It's primarily
fixes in various areas, with most of the new functionality centering
around TCMU backend driver work that Xiubo Li has been driving.
Here's the summary on the feature side:
- Make T10-PI verify configurable for emulated (FILEIO + RD) backends
(Dmitry Monakhov)
- Allow target-core/TCMU pass-through to use in-kernel SPC-PR logic
(Bryant Ly + MNC)
- Add TCMU support for growing ring buffer size (Xiubo Li + MNC)
- Add TCMU support for global block data pool (Xiubo Li + MNC)
and on the bug-fix side:
- Fix COMPARE_AND_WRITE non GOOD status handling for READ phase
failures (Gary Guo + nab)
- Fix iscsi-target hang with explicitly changing per NodeACL
CmdSN number depth with concurrent login driven session
reinstatement. (Gary Guo + nab)
- Fix ibmvscsis fabric driver ABORT task handling (Bryant Ly)
- Fix target-core/FILEIO zero length handling (Bart Van Assche)
Also, there was an OOPs introduced with the WRITE_VERIFY changes that
I ended up reverting at the last minute, because as not unusual Bart
and I could not agree on the fix in time for -rc1. Since it's specific
to a conformance test, it's been reverted for now.
There is a separate patch in the queue to address the underlying
control CDB write overflow regression in >= v4.3 separate from the
WRITE_VERIFY revert here, that will be pushed post -rc1"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (30 commits)
Revert "target: Fix VERIFY and WRITE VERIFY command parsing"
IB/srpt: Avoid that aborting a command triggers a kernel warning
IB/srpt: Fix abort handling
target/fileio: Fix zero-length READ and WRITE handling
ibmvscsis: Do not send aborted task response
tcmu: fix module removal due to stuck thread
target: Don't force session reset if queue_depth does not change
iscsi-target: Set session_fall_back_to_erl0 when forcing reinstatement
target: Fix compare_and_write_callback handling for non GOOD status
tcmu: Recalculate the tcmu_cmd size to save cmd area memories
tcmu: Add global data block pool support
tcmu: Add dynamic growing data area feature support
target: fixup error message in target_tg_pt_gp_tg_pt_gp_id_store()
target: fixup error message in target_tg_pt_gp_alua_access_type_store()
target/user: PGR Support
target: Add WRITE_VERIFY_16
Documentation/target: add an example script to configure an iSCSI target
target: Use kmalloc_array() in transport_kmap_data_sg()
target: Use kmalloc_array() in compare_and_write_callback()
target: Improve size determinations in two functions
...
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The script illustrates how to interact with configfs to create a very
simple LIO iSCSI target with a file or block device backstore.
The script can serve as a starting point for people that cannot use
targetcli because Python is not available on their machine.
Signed-off-by: Christophe Vu-Brugier <cvubrugier@fastmail.fm>
Signed-off-by: Vincent Donnefort <vdonnefort@gmail.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Misc fixes:
- two boot crash fixes
- unwinder fixes
- kexec related kernel direct mappings enhancements/fixes
- more Clang support quirks
- minor cleanups
- Documentation fixes"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/intel_rdt: Fix a typo in Documentation
x86/build: Don't add -maccumulate-outgoing-args w/o compiler support
x86/boot/32: Fix UP boot on Quark and possibly other platforms
x86/mm/32: Set the '__vmalloc_start_set' flag in initmem_init()
x86/kexec/64: Use gbpages for identity mappings if available
x86/mm: Add support for gbpages to kernel_ident_mapping_init()
x86/boot: Declare error() as noreturn
x86/mm/kaslr: Use the _ASM_MUL macro for multiplication to work around Clang incompatibility
x86/mm: Fix boot crash caused by incorrect loop count calculation in sync_global_pgds()
x86/asm: Don't use RBP as a temporary register in csum_partial_copy_generic()
x86/microcode/AMD: Remove redundant NULL check on mc
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Example 3 contains a typo:
"C0" in "# echo C0 > p0/cpus" is wrong because it specifies core
6-7 instead of wanted core 4-7.
Correct this typo to avoid confusion.
Signed-off-by: Xiaochen Shen <xiaochen.shen@intel.com>
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
Cc: vikas.shivappa@linux.intel.com
Cc: tony.luck@intel.com
Link: http://lkml.kernel.org/r/1493781356-24229-1-git-send-email-xiaochen.shen@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull more powerpc updates from Michael Ellerman:
"The change to the Linux page table geometry was delayed for more
testing with 16G pages, and there's the new CPU features stuff which
just needed one more polish before going in. Plus a few changes from
Scott which came in a bit late. And then various fixes, mostly minor.
Summary highlights:
- rework the Linux page table geometry to lower memory usage on
64-bit Book3S (IBM chips) using the Hash MMU.
- support for a new device tree binding for discovering CPU features
on future firmwares.
- Freescale updates from Scott:
"Includes a fix for a powerpc/next mm regression on 64e, a fix for
a kernel hang on 64e when using a debugger inside a relocated
kernel, a qman fix, and misc qe improvements."
Thanks to: Christophe Leroy, Gavin Shan, Horia Geantă, LiuHailong,
Nicholas Piggin, Roy Pledge, Scott Wood, Valentin Longchamp"
* tag 'powerpc-4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s: Support new device tree binding for discovering CPU features
powerpc: Don't print cpu_spec->cpu_name if it's NULL
of/fdt: introduce of_scan_flat_dt_subnodes and of_get_flat_dt_phandle
powerpc/64s: Fix unnecessary machine check handler relocation branch
powerpc/mm/book3s/64: Rework page table geometry for lower memory usage
powerpc: Fix distclean with Makefile.postlink
powerpc/64e: Don't place the stack beyond TASK_SIZE
powerpc/powernv: Block PCI config access on BCM5718 during EEH recovery
powerpc/8xx: Adding support of IRQ in MPC8xx GPIO
soc/fsl/qbman: Disable IRQs for deferred QBMan work
soc/fsl/qe: add EXPORT_SYMBOL for the 2 qe_tdm functions
soc/fsl/qe: only apply QE_General4 workaround on affected SoCs
soc/fsl/qe: round brg_freq to 1kHz granularity
soc/fsl/qe: get rid of immrbar_virt_to_phys()
net: ethernet: ucc_geth: fix MEM_PART_MURAM mode
powerpc/64e: Fix hang when debugging programs with relocated kernel
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The ibm,powerpc-cpu-features device tree binding describes CPU features with
ASCII names and extensible compatibility, privilege, and enablement metadata
that allows improved flexibility and compatibility with new hardware.
The interface is described in detail in ibm,powerpc-cpu-features.txt in this
patch.
Currently this code is not enabled by default, and there are no released
firmwares that provide the binding.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This patch allows the use of IRQ to notify the change of GPIO status
on MPC8xx CPM IO ports. This then allows to associate IRQs to GPIOs
in the Device Tree.
Ex:
CPM1_PIO_C: gpio-controller@960 {
#gpio-cells = <2>;
compatible = "fsl,cpm1-pario-bank-c";
reg = <0x960 0x10>;
fsl,cpm1-gpio-irq-mask = <0x0fff>;
interrupts = <1 2 6 9 10 11 14 15 23 24 26 31>;
interrupt-parent = <&CPM_PIC>;
gpio-controller;
};
The property 'fsl,cpm1-gpio-irq-mask' defines which of the 16 GPIOs
have the associated interrupts defined in the 'interrupts' property.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
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Pull more documentation updates from Jonathan Corbet:
"Connect the newly RST-formatted documentation to the rest; this had to
wait until the input pull was done. There's also a few small fixes
that wandered in"
* tag 'docs-4.12-2' of git://git.lwn.net/linux:
doc: replace FTP URL to kernel.org with HTTPS one
docs: update references to the device io book
Documentation: earlycon: fix Marvell Armada 3700 UART name
docs-rst: add input docs at main index and use kernel-figure
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FTP services were shutdown some weeks ago, so the FTP URL
does not work anymore. Fix this by replacing it with
corresponding HTTPS URL.
Signed-off-by: Michael Heimpold <michael.heimpold@i2se.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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While converting the deviceiobook from DocBook to RST, dangling
references were left behind. This commit updates all remaining
references to the new location. SeongJae Park improved the ko_KR
translation.
Fixes: 8a8a602fdb83 ("docs: Convert the deviceio template to RST")
Signed-off-by: Helmut Grohne <h.grohne@intenta.de>
Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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The Marvell Armada 3700 UART uses "ar3700_uart" for its earlycon name.
Adjust documentation to match the code.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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The input subsystem documentation got converted into ReST.
Add it to the main documentation index and use kernel-figure
for the two svg images there.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull more arm64 updates from Catalin Marinas:
- Silence module allocation failures when CONFIG_ARM*_MODULE_PLTS is
enabled. This requires a check for __GFP_NOWARN in alloc_vmap_area()
- Improve/sanitise user tagged pointers handling in the kernel
- Inline asm fixes/cleanups
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Silence first allocation with CONFIG_ARM64_MODULE_PLTS=y
ARM: Silence first allocation with CONFIG_ARM_MODULE_PLTS=y
mm: Silence vmap() allocation failures based on caller gfp_flags
arm64: uaccess: suppress spurious clang warning
arm64: atomic_lse: match asm register sizes
arm64: armv8_deprecated: ensure extension of addr
arm64: uaccess: ensure extension of access_ok() addr
arm64: ensure extension of smp_store_release value
arm64: xchg: hazard against entire exchange variable
arm64: documentation: document tagged pointer stack constraints
arm64: entry: improve data abort handling of tagged pointers
arm64: hw_breakpoint: fix watchpoint matching for tagged pointers
arm64: traps: fix userspace cache maintenance emulation on a tagged pointer
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Some kernel features don't currently work if a task puts a non-zero
address tag in its stack pointer, frame pointer, or frame record entries
(FP, LR).
For example, with a tagged stack pointer, the kernel can't deliver
signals to the process, and the task is killed instead. As another
example, with a tagged frame pointer or frame records, perf fails to
generate call graphs or resolve symbols.
For now, just document these limitations, instead of finding and fixing
everything that doesn't work, as it's not known if anyone needs to use
tags in these places anyway.
In addition, as requested by Dave Martin, generalize the limitations
into a general kernel address tag policy, and refactor
tagged-pointers.txt to include it.
Fixes: d50240a5f6ce ("arm64: mm: permit use of tagged pointers at EL0")
Cc: <stable@vger.kernel.org> # 3.12.x-
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Pull fbdev updates from Bartlomiej Zolnierkiewicz:
"There is nothing really major here, just a couple of small bugfixes,
improvements and cleanups.
- fix handling of probing errors in omapfb (Arvind Yadav)
- remove incorrect __exit markups in few drivers (Dmitry Torokhov)
- fix boot time logo support for drivers using deferred probe
(Takeshi Kihara)
- fix DMA allocation size for ARM CLCD driver (Liam Beguin)
- add support for specifying size via xenstore in xen-frontfb
(Juergen Gross)
- support for AUS mode in imxfb driver (Martin Kaiser)
- fix buffer on stack usage in udlfb driver (Maksim Salau)
- probe failure path fixup in sm501fb driver (Alexey Khoroshilov)
- fix config dependency loop for stifb driver (Arnd Bergmann)
- misc cleanups (Joe Perches, Christophe Leroy, Karim Eshapa, Pushkar
Jambhlekar)"
* tag 'fbdev-v4.12' of git://github.com/bzolnier/linux:
fbdev: sti: don't select CONFIG_VT
drivers/video/fbdev/omap/lcd_mipid.c: Use time comparison kernel macros
sm501fb: don't return zero on failure path in sm501fb_start()
video: fbdev: udlfb: Fix buffer on stack
video: console: Remove reference to CONFIG_8xx
dt-bindings: display: imx: entry for AUS mode
video: fbdev: imxfb: support AUS mode
drivers/video/fbdev: Fixing coding guidelines in acornfb.c
xen, fbfront: add support for specifying size via xenstore
video: ARM CLCD: fix dma allocation size
drivers/video: Convert remaining uses of pr_warning to pr_warn
video/logo: tidyup fb_logo_late_init initcall timing
video: fbdev: i810: remove incorrect __exit markups
video: fbdev: pmag-aa-fb: remove incorrect __exit markups
video: fbdev: pmagb-b-fb: remove incorrect __exit markups
video: fbdev: pmag-ba-fb: remove incorrect __exit markups
omapfb: dss: Handle return errors in dss_init_ports()
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Allow setting AUS mode for a display from the device tree. Use an
optional boolean property. AUS mode can be set only on imx21 and
compatible chipsets.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Pull block fixes from Jens Axboe:
"A smaller collection of fixes that should go into -rc1. This contains:
- A fix from Christoph, fixing a regression with the WRITE_SAME and
partial completions. Caused a BUG() on ppc.
- Fixup for __blk_mq_stop_hw_queues(), it should be static. From
Colin.
- Removal of dmesg error messages on elevator switching, when invoked
from sysfs. From me.
- Fix for blk-stat, using this_cpu_ptr() in a section only protected
by rcu_read_lock(). This breaks when PREEMPT_RCU is enabled. From
me.
- Two fixes for BFQ from Paolo, one fixing a crash and one updating
the documentation.
- An error handling lightnvm memory leak, from Rakesh.
- The previous blk-mq hot unplug lock reversal depends on the CPU
hotplug rework that isn't in mainline yet. This caused a lockdep
splat when people unplugged CPUs with blk-mq devices. From Wanpeng.
- A regression fix for DIF/DIX on blk-mq. From Wen"
* 'for-linus' of git://git.kernel.dk/linux-block:
block: handle partial completions for special payload requests
blk-mq: NVMe 512B/4K+T10 DIF/DIX format returns I/O error on dd with split op
blk-stat: don't use this_cpu_ptr() in a preemptable section
elevator: remove redundant warnings on IO scheduler switch
block, bfq: stress that low_latency must be off to get max throughput
block, bfq: use pointer entity->sched_data only if set
nvme: lightnvm: fix memory leak
blk-mq: make __blk_mq_stop_hw_queues static
lightnvm: remove unused rq parameter of nvme_nvm_rqtocmd() to kill warning
block/mq: fix potential deadlock during cpu hotplug
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The introduction of the BFQ and Kyber I/O schedulers has triggered a
new wave of I/O benchmarks. Unfortunately, comments and discussions on
these benchmarks confirm that there is still little awareness that it
is very hard to achieve, at the same time, a low latency and a high
throughput. In particular, virtually all benchmarks measure
throughput, or throughput-related figures of merit, but, for BFQ, they
use the scheduler in its default configuration. This configuration is
geared, instead, toward a low latency. This is evidently a sign that
BFQ documentation is still too unclear on this important aspect. This
commit addresses this issue by stressing how BFQ configuration must be
(easily) changed if the only goal is maximum throughput.
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
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Pull MTD updates from Brian Norris:
"NAND, from Boris:
- some minor fixes/improvements on existing drivers (fsmc, gpio, ifc,
davinci, brcmnand, omap)
- a huge cleanup/rework of the denali driver accompanied with core
fixes/improvements to simplify the driver code
- a complete rewrite of the atmel driver to support new DT bindings
make future evolution easier
- the addition of per-vendor detection/initialization steps to avoid
extending the nand_ids table with more extended-id entries
SPI NOR, from Cyrille:
- fixes in the hisi, intel and Mediatek SPI controller drivers
- fixes to some SPI flash memories not supporting the Chip Erase
command.
- add support to some new memory parts (Winbond, Macronix, Micron,
ESMT).
- add new driver for the STM32 QSPI controller
And a few fixes for Gemini and Versatile platforms on physmap-of"
* tag 'for-linus-20170510' of git://git.infradead.org/linux-mtd: (100 commits)
MAINTAINERS: Update NAND subsystem git repositories
mtd: nand: gpio: update binding
mtd: nand: add ooblayout for old hamming layout
mtd: oxnas_nand: Allocating more than necessary in probe()
dt-bindings: mtd: Document the STM32 QSPI bindings
mtd: mtk-nor: set controller's address width according to nor flash
mtd: spi-nor: add driver for STM32 quad spi flash controller
mtd: nand: brcmnand: Check flash #WP pin status before nand erase/program
mtd: nand: davinci: add comment on NAND subpage write status on keystone
mtd: nand: omap2: Fix partition creation via cmdline mtdparts
mtd: nand: NULL terminate a of_device_id table
mtd: nand: Fix a couple error codes
mtd: nand: allow drivers to request minimum alignment for passed buffer
mtd: nand: allocate aligned buffers if NAND_OWN_BUFFERS is unset
mtd: nand: denali: allow to override revision number
mtd: nand: denali_dt: use pdev instead of ofdev for platform_device
mtd: nand: denali_dt: remove dma-mask DT property
mtd: nand: denali: support 64bit capable DMA engine
mtd: nand: denali_dt: enable HW_ECC_FIXUP for Altera SOCFPGA variant
mtd: nand: denali: support HW_ECC_FIXUP capability
...
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This patch updates the binding documentation in accordance with
commit 44dd182861f99 ("mtd: nand: gpio: make nCE GPIO optional")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reported-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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This patch adds documentation of device tree bindings for the STM32
QSPI controller.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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The driver sets appropriate DMA mask. Delete the "dma-mask" DT
property. See [1] for negative comments for this binding.
[1] https://lkml.org/lkml/2016/2/8/57
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
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There are various customizable parameters, so several variants for
this IP. A generic compatible like "denali,denali-nand-dt" is
useless. Moreover, there are multiple things wrong with this string.
(Refer to Rob's comment [1])
The "denali,denali-nand-dt" was added by Altera for the SOCFPGA port.
Replace it with a more specific string "altr,socfpga-denali-nand".
There are no users (in upstream) of the old compatible string.
The Denali IP on SOCFPGA incorporates the hardware ECC fixup engine.
So, this capability should be associated with the compatible.
[1] https://lkml.org/lkml/2016/12/1/450
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
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The old NAND bindings were not exactly describing the hardware topology
and were preventing definitions of several NAND chips under the same
NAND controller.
New bindings address these limitations and should be preferred over the
old ones for new SoCs/boards.
Old bindings are still supported for backward compatibility but are
marked deprecated in the doc.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild UAPI updates from Masahiro Yamada:
"Improvement of headers_install by Nicolas Dichtel.
It has been long since the introduction of uapi directories, but the
de-coupling of exported headers has not been completed. Headers listed
in header-y are exported whether they exist in uapi directories or
not. His work fixes this inconsistency.
All (and only) headers under uapi directories are now exported. The
asm-generic wrappers are still exceptions, but this is a big step
forward"
* tag 'kbuild-uapi-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
arch/include: remove empty Kbuild files
uapi: export all arch specifics directories
uapi: export all headers under uapi directories
smc_diag.h: fix include from userland
btrfs_tree.h: fix include from userland
uapi: includes linux/types.h before exporting files
Makefile.headersinst: remove destination-y option
Makefile.headersinst: cleanup input files
x86: stop exporting msr-index.h to userland
nios2: put setup.h in uapi
h8300: put bitsperlong.h in uapi
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This patch removes the need of subdir-y. Now all files/directories under
arch/<arch>/include/uapi/ are exported.
The only change for userland is the layout of the command 'make
headers_install_all': directories asm-<arch> are replaced by arch-<arch>/.
Those new directories contains all files/directories of the specified arch.
Note that only cris and tile have more directories than only asm:
- arch-v[10|32] for cris;
- arch for tile.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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Regularly, when a new header is created in include/uapi/, the developer
forgets to add it in the corresponding Kbuild file. This error is usually
detected after the release is out.
In fact, all headers under uapi directories should be exported, thus it's
useless to have an exhaustive list.
After this patch, the following files, which were not exported, are now
exported (with make headers_install_all):
asm-arc/kvm_para.h
asm-arc/ucontext.h
asm-blackfin/shmparam.h
asm-blackfin/ucontext.h
asm-c6x/shmparam.h
asm-c6x/ucontext.h
asm-cris/kvm_para.h
asm-h8300/shmparam.h
asm-h8300/ucontext.h
asm-hexagon/shmparam.h
asm-m32r/kvm_para.h
asm-m68k/kvm_para.h
asm-m68k/shmparam.h
asm-metag/kvm_para.h
asm-metag/shmparam.h
asm-metag/ucontext.h
asm-mips/hwcap.h
asm-mips/reg.h
asm-mips/ucontext.h
asm-nios2/kvm_para.h
asm-nios2/ucontext.h
asm-openrisc/shmparam.h
asm-parisc/kvm_para.h
asm-powerpc/perf_regs.h
asm-sh/kvm_para.h
asm-sh/ucontext.h
asm-tile/shmparam.h
asm-unicore32/shmparam.h
asm-unicore32/ucontext.h
asm-x86/hwcap2.h
asm-xtensa/kvm_para.h
drm/armada_drm.h
drm/etnaviv_drm.h
drm/vgem_drm.h
linux/aspeed-lpc-ctrl.h
linux/auto_dev-ioctl.h
linux/bcache.h
linux/btrfs_tree.h
linux/can/vxcan.h
linux/cifs/cifs_mount.h
linux/coresight-stm.h
linux/cryptouser.h
linux/fsmap.h
linux/genwqe/genwqe_card.h
linux/hash_info.h
linux/kcm.h
linux/kcov.h
linux/kfd_ioctl.h
linux/lightnvm.h
linux/module.h
linux/nbd-netlink.h
linux/nilfs2_api.h
linux/nilfs2_ondisk.h
linux/nsfs.h
linux/pr.h
linux/qrtr.h
linux/rpmsg.h
linux/sched/types.h
linux/sed-opal.h
linux/smc.h
linux/smc_diag.h
linux/stm.h
linux/switchtec_ioctl.h
linux/vfio_ccw.h
linux/wil6210_uapi.h
rdma/bnxt_re-abi.h
Note that I have removed from this list the files which are generated in every
exported directories (like .install or .install.cmd).
Thanks to Julien Floret <julien.floret@6wind.com> for the tip to get all
subdirs with a pure makefile command.
For the record, note that exported files for asm directories are a mix of
files listed by:
- include/uapi/asm-generic/Kbuild.asm;
- arch/<arch>/include/uapi/asm/Kbuild;
- arch/<arch>/include/asm/Kbuild.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Mark Salter <msalter@redhat.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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This option was added in commit c7bb349e7c25 ("kbuild: introduce destination-y
for exported headers") but never used in-tree.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"RTC subsystem update:
- Add OF device ID table for i2c drivers
New RTC driver:
- Motorola CPCAP PMIC RTC
RTC driver updates:
- cmos: fix IRQ selection
- ds1307: Add ST m41t0 support
- ds1374: fix watchdog configuration
- sh: Add rza series support"
* tag 'rtc-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (33 commits)
rtc: gemini: add return value validation
rtc: snvs: fix an incorrect check of return value
rtc: ds1374: wdt: Fix stop/start ioctl always returning -EINVAL
rtc: ds1374: wdt: Fix issue with timeout scaling from secs to wdt ticks
rtc: sh: mark PM functions as unused
rtc: hid-sensor-time: remove some dead code
rtc: m41t80: Add proper compatible for rv4162
rtc: ds1307: Add m41t0 to OF device ID table
rtc: ds1307: support m41t0 variant
rtc: cpcap: fix improper use of IRQ_NONE for request_threaded_irq
rtc: cmos: Do not assume irq 8 for rtc when there are no legacy irqs
x86: i8259: export legacy_pic symbol
dt-bindings: rtc: document the rtc-sh bindings
rtc: sh: add support for rza series
rtc: cpcap: kfreeing devm allocated memory
rtc: wm8350: Remove unused to_wm8350_from_rtc_dev
rtc: cpcap: new rtc driver
dt-bindings: Add vendor prefix for Motorola
rtc: omap: mark PM methods as __maybe_unused
rtc: omap: remove incorrect __exit markups
...
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The m41t0 variant is very similar to the already supported m41t00
variant, with the notable exception of the oscillator fail bit.
The data sheet notes:
If the oscillator fail (OF) bit is internally set to a '1,' this
indicates that the oscillator has either stopped, or was stopped
for some period of time and can be used to judge the validity of
the clock and date data.
The bit will get cleared with a regular write of the system time,
so no changes are needed to clear it.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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Add the binding documentation for rtc-sh which is an RTC for
SuperH and RZ/A SoCs.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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This driver supports the Motorola CPCAP PMIC found on
some of Motorola's mobile phones, such as the Droid 4.
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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Motorola was involved in semiconductor and mobile phone business.
The "motorola," prefix is already used by a couple of bindings:
* rtc/rtc-cmos.txt
* mfd/motorola-cpcap.txt
* regulator/cpcap-regulator.txt
Apart from that it is used in the DT file for the Droid 4 mobile
phone.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"Sort of on the quieter side this time, which is probably due more to
me not catching up as quickly on patch review than anything else.
Overall it seems normal though, a few small changes to the core,
mostly small non-critical fixes here and there as well as driver
updates for new and existing hardware support.
The biggest things are the TI clk driver rework to lay the groundwork
for clkctrl support in the next merge window and the AmLogic
audio/graphics clk support.
Core:
- clk_possible_parents debugfs file so we know which parents a clk
could possibly have
- Fix to make clk rate change notifiers stop on the first failure
instead of continuing
New Drivers:
- Mediatek MT6797 SoCs
- hi655x PMIC clks
- AmLogic Meson SoC i2s and spdif audio clks and Mali graphics clks
- Allwinner H5 SoCs and PRCM hardware
Updates:
- Nvidia Tegra T210 cleanups and non-critical fixes
- TI OMAP cleanups in preparation for clkctrl support
- trivial fixes like kcalloc(), devm_* conversions, and seq_puts()
- ZTE zx296718 SoC VGA clks
- Rockchip clk-ids, fixups, and rename of rk1108 to rv1108
- IDT VersaClock 5P49V5935 support
- Renesas R-Car H3 and M3-W IMR clks and ES2.0 rev of R-Car H3
support"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (151 commits)
clk: x86: pmc-atom: Checking for IS_ERR() instead of NULL
clk: ti: divider: try to fix ti_clk_register_divider
clk: mvebu: Use kcalloc() in two functions
clk: mvebu: Use kcalloc() in of_cpu_clk_setup()
clk: nomadik: Delete error messages for a failed memory allocation in two functions
clk: nomadik: Use seq_puts() in nomadik_src_clk_show()
clk: Improve a size determination in two functions
clk: Replace four seq_printf() calls by seq_putc()
clk: si5351: Delete an error message for a failed memory allocation in si5351_i2c_probe()
clk: si5351: Use devm_kcalloc() in si5351_i2c_probe()
clk: at91: Use kcalloc() in of_at91_clk_pll_get_characteristics()
reset: mediatek: Add MT2701 ethsys reset controller include file
clk: mediatek: add mt2701 ethernet reset
clk: hi6220: Add the hi655x's pmic clock
clk: ti: fix building without legacy omap3
clk: ti: fix linker error with !SOC_OMAP4
clk: hi3620: Fix a typo in one variable name
clk: hi3620: Delete error messages for a failed memory allocation in two functions
clk: hi3620: Use kcalloc() in hi3620_mmc_clk_init()
clk: hisilicon: Delete error messages for failed memory allocations in hisi_clk_init()
...
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This patch adds the binding documentation for apmixedsys, imgsys,
infracfg, mmsys, topckgen, vdecsys and vencsys for MT6797.
Signed-off-by: Kevin-CW Chen <kevin-cw.chen@mediatek.com>
Signed-off-by: Mars Cheng <mars.cheng@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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IDT VersaClock 5 5P49V5935 has 4 clock outputs, 4 fractional dividers.
Input clock source can be taken from either integrated crystal or from
external reference clock.
Signed-off-by: Alexey Firago <alexey_firago@mentor.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into clk-next
Pull Allwinner clock patches for 4.12 from Maxime Ripard:
Support for the new H5 SoC and the PRCM block found in a number of SoCs as
well, plus the usual chunk of fixes and minor enhancements.
* tag 'sunxi-clk-for-4.12' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
clk: sunxi-ng: Display index when clock registration fails
clk: sunxi-ng: a33: Add offset and minimum value for DDR1 PLL N factor
clk: sunxi-ng: a80: Remodel CPU cluster PLLs as N-type multiplier clocks
clk: sunxi-ng: mult: Support PLL lock detection
clk: sunxi-ng: add support for PRCM CCUs
dt-bindings: update device tree binding for Allwinner PRCM CCUs
clk: sunxi-ng: sun5i: Fix mux width for csi clock
clk: sunxi-ng: tighten SoC deps on explicit AllWinner SoCs
clk: sunxi-ng: add Allwinner H5 CCU support for H3 CCU driver
clk: sunxi-ng: gate: Support common pre-dividers
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Many Allwinner SoCs after A31 have a CCU in PRCM block.
Give the ones on H3 and A64 compatible strings.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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Allwinner H5 is a SoC that features a design which keeps the peripheral
compatible with H3, so that it have also a CCU like the one on H3 --
only one bus gate/reset is added, and the mmc sample/output phases are
removed because of MMC controller update.
Add its support in our existing H3 CCU driver.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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