This extends the Qualcomm GLINK implementation to support the additional
features used for communicating with modem and DSP coprocessors in modern
Qualcomm platforms.
In addition to this there's support for placing virtio RPMSG buffers in
non-System RAM.
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Merge tag 'rpmsg-v4.14' of git://github.com/andersson/remoteproc
Pull rpmsg updates from Bjorn Andersson:
"This extends the Qualcomm GLINK implementation to support the
additional features used for communicating with modem and DSP
coprocessors in modern Qualcomm platforms.
In addition to this there's support for placing virtio RPMSG buffers
in non-System RAM"
* tag 'rpmsg-v4.14' of git://github.com/andersson/remoteproc: (29 commits)
rpmsg: glink: initialize ret to zero to ensure error status check is correct
rpmsg: glink: fix null pointer dereference on a null intent
dt-bindings: soc: qcom: Extend GLINK to cover SMEM
remoteproc: qcom: adsp: Allow defining GLINK edge
rpmsg: glink: Export symbols from common code
rpmsg: glink: Release idr lock before returning on error
rpmsg: glink: Handle remote rx done command
rpmsg: glink: Request for intents when unavailable
rpmsg: glink: Use the intents passed by remote
rpmsg: glink: Receive and store the remote intent buffers
rpmsg: glink: Add announce_create ops and preallocate intents
rpmsg: glink: Add rx done command
rpmsg: glink: Make RX FIFO peak accessor to take an offset
rpmsg: glink: Use the local intents when receiving data
rpmsg: glink: Add support for TX intents
rpmsg: glink: Fix idr_lock from mutex to spinlock
rpmsg: glink: Add support for transport version negotiation
rpmsg: glink: Introduce glink smem based transport
rpmsg: glink: Do a mbox_free_channel in remove
rpmsg: glink: Return -EAGAIN when there is no FIFO space
...
This adds and improves remoteproc support for TI DA8xx/OMAP-L13x DSP, TI
Keystone 66AK2G DSP and iMX6SX/7D Cortex M4 coprocessors. It introduces the
Qualcomm restart notifier and a few fixes.
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Merge tag 'rproc-v4.14' of git://github.com/andersson/remoteproc
Pull remoteproc updates from Bjorn Andersson:
"This adds and improves remoteproc support for TI DA8xx/OMAP-L13x DSP,
TI Keystone 66AK2G DSP and iMX6SX/7D Cortex M4 coprocessors. It
introduces the Qualcomm restart notifier and a few fixes"
* tag 'rproc-v4.14' of git://github.com/andersson/remoteproc:
remoteproc: Introduce rproc handle accessor for children
remoteproc: qcom: Make ssr_notifiers local
remoteproc: Stop subdevices in reverse order
remoteproc: imx_rproc: add a NXP/Freescale imx_rproc driver
remoteproc: dt: Provide bindings for iMX6SX/7D Remote Processor Controller driver
remoteproc: qcom: Use PTR_ERR_OR_ZERO
remoteproc: st: explicitly request exclusive reset control
remoteproc: qcom: explicitly request exclusive reset control
remoteproc/keystone: explicitly request exclusive reset control
remoteproc/keystone: Add support for Keystone 66AK2G SOCs
remoteproc/davinci: Add device tree support for OMAP-L138 DSP
dt-bindings: remoteproc: Add bindings for Davinci DSP processors
remoteproc/davinci: Add support to parse internal memories
remoteproc/davinci: Switch to platform_get_resource_byname()
remoteproc: make device_type const
soc: qcom: GLINK SSR notifier
remoteproc: qcom: Add support for SSR notifications
remoteproc: Merge __rproc_boot() with rproc_boot()
Pull i2c updates from Wolfram Sang:
- new drivers for Spreadtrum I2C, Intel Cherry Trail Whiskey Cove SMBUS
- quite some driver updates
- cleanups for the i2c-mux subsystem
- some subsystem-wide constification
- further cleanup of include/linux/i2c
* 'i2c/for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (50 commits)
i2c: sprd: Fix undefined reference errors
i2c: nomadik: constify amba_id
i2c: versatile: Make i2c_algo_bit_data const
i2c: busses: make i2c_adapter_quirks const
i2c: busses: make i2c_adapter const
i2c: busses: make i2c_algorithm const
i2c: Add Spreadtrum I2C controller driver
dt-bindings: i2c: Add Spreadtrum I2C controller documentation
i2c-cht-wc: make cht_wc_i2c_adap_driver static
MAINTAINERS: Add entry for drivers/i2c/busses/i2c-cht-wc.c
i2c: aspeed: Retain delay/setup/hold values when configuring bus frequency
dt-bindings: i2c: eeprom: Document vendor to be used and deprecated ones
i2c: i801: Restore the presence state of P2SB PCI device after reading BAR
MAINTAINERS: drop entry for Blackfin I2C and Sonic's email
blackfin: merge the two TWI header files
i2c: davinci: Preserve return value of devm_clk_get
i2c: mediatek: Add i2c compatible for MediaTek MT7622
dt-bindings: i2c: Add MediaTek MT7622 i2c binding
dt-bindings: i2c: modify information formats
i2c: mux: i2c-arb-gpio-challenge: allow compiling w/o OF support
...
Pull followup block layer updates from Jens Axboe:
"I ended up splitting the main pull request for this series into two,
mainly because of clashes between NVMe fixes that went into 4.13 after
the for-4.14 branches were split off. This pull request is mostly
NVMe, but not exclusively. In detail, it contains:
- Two pull request for NVMe changes from Christoph. Nothing new on
the feature front, basically just fixes all over the map for the
core bits, transport, rdma, etc.
- Series from Bart, cleaning up various bits in the BFQ scheduler.
- Series of bcache fixes, which has been lingering for a release or
two. Coly sent this in, but patches from various people in this
area.
- Set of patches for BFQ from Paolo himself, updating both
documentation and fixing some corner cases in performance.
- Series from Omar, attempting to now get the 4k loop support
correct. Our confidence level is higher this time.
- Series from Shaohua for loop as well, improving O_DIRECT
performance and fixing a use-after-free"
* 'for-4.14/block-postmerge' of git://git.kernel.dk/linux-block: (74 commits)
bcache: initialize dirty stripes in flash_dev_run()
loop: set physical block size to logical block size
bcache: fix bch_hprint crash and improve output
bcache: Update continue_at() documentation
bcache: silence static checker warning
bcache: fix for gc and write-back race
bcache: increase the number of open buckets
bcache: Correct return value for sysfs attach errors
bcache: correct cache_dirty_target in __update_writeback_rate()
bcache: gc does not work when triggering by manual command
bcache: Don't reinvent the wheel but use existing llist API
bcache: do not subtract sectors_to_gc for bypassed IO
bcache: fix sequential large write IO bypass
bcache: Fix leak of bdev reference
block/loop: remove unused field
block/loop: fix use after free
bfq: Use icq_to_bic() consistently
bfq: Suppress compiler warnings about comparisons
bfq: Check kstrtoul() return value
bfq: Declare local functions static
...
Document support for the Watchdog Timer (WDT) Controller in the Renesas
R-Car D3 (r8a77995) SoC.
No driver update is needed.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
For the AST2500 and compatible watchdog controllers the external reset
signal can be configured for push-pull or open-drain drive types, and in
the case of push-pull driving, active low or high.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Describe device tree optional properties:
* aspeed,reset-type = "cpu|soc|system|none"
One of three different, mutually exclusive, values
"cpu" : ARM CPU reset on signal
"soc" : 'System on chip' reset
"system" : Full system reset
The value can also be set to "none" which indicates that no
reset of any kind is to be done via this watchdog. This assumes
another watchdog on the chip is to take care of resets.
* aspeed,external-signal - Generate external signal (WDT1 and WDT2 only)
* aspeed,alt-boot - Boot from alternate block on signal
Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This updates dt-binding documentation for MediaTek MT7622 and
MT7623 SoC. For the both SoCs supported all rely on the fallback
binding of the case with "mediatek,mt6589-wdt".
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
The watchdog IP block on Meson8 and Meson8m2 is already supported by the
existing meson-wdt driver. Meson8 uses the same register bits as Meson6,
while the newer Meson8m2 SoC uses the same register bits as Meson8b.
Currently watchdog support on Meson8 SoC already works because
meson8.dtsi simply uses the "amlogic,meson6-wdt" compatible. Adding a
separate compatible for Meson8 makes this more explicit though.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Pull networking fixes from David Miller:
"The iwlwifi firmware compat fix is in here as well as some other
stuff:
1) Fix request socket leak introduced by BPF deadlock fix, from Eric
Dumazet.
2) Fix VLAN handling with TXQs in mac80211, from Johannes Berg.
3) Missing __qdisc_drop conversions in prio and qfq schedulers, from
Gao Feng.
4) Use after free in netlink nlk groups handling, from Xin Long.
5) Handle MTU update properly in ipv6 gre tunnels, from Xin Long.
6) Fix leak of ipv6 fib tables on netns teardown, from Sabrina Dubroca
with follow-on fix from Eric Dumazet.
7) Need RCU and preemption disabled during generic XDP data patch,
from John Fastabend"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (54 commits)
bpf: make error reporting in bpf_warn_invalid_xdp_action more clear
Revert "mdio_bus: Remove unneeded gpiod NULL check"
bpf: devmap, use cond_resched instead of cpu_relax
bpf: add support for sockmap detach programs
net: rcu lock and preempt disable missing around generic xdp
bpf: don't select potentially stale ri->map from buggy xdp progs
net: tulip: Constify tulip_tbl
net: ethernet: ti: netcp_core: no need in netif_napi_del
davicom: Display proper debug level up to 6
net: phy: sfp: rename dt properties to match the binding
dt-binding: net: sfp binding documentation
dt-bindings: add SFF vendor prefix
dt-bindings: net: don't confuse with generic PHY property
ip6_tunnel: fix setting hop_limit value for ipv6 tunnel
ip_tunnel: fix setting ttl and tos value in collect_md mode
ipv6: fix typo in fib6_net_exit()
tcp: fix a request socket leak
sctp: fix missing wake ups in some situations
netfilter: xt_hashlimit: fix build error caused by 64bit division
netfilter: xt_hashlimit: alloc hashtable with right size
...
Merge more updates from Andrew Morton:
- most of the rest of MM
- a small number of misc things
- lib/ updates
- checkpatch
- autofs updates
- ipc/ updates
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (126 commits)
ipc: optimize semget/shmget/msgget for lots of keys
ipc/sem: play nicer with large nsops allocations
ipc/sem: drop sem_checkid helper
ipc: convert kern_ipc_perm.refcount from atomic_t to refcount_t
ipc: convert sem_undo_list.refcnt from atomic_t to refcount_t
ipc: convert ipc_namespace.count from atomic_t to refcount_t
kcov: support compat processes
sh: defconfig: cleanup from old Kconfig options
mn10300: defconfig: cleanup from old Kconfig options
m32r: defconfig: cleanup from old Kconfig options
drivers/pps: use surrounding "if PPS" to remove numerous dependency checks
drivers/pps: aesthetic tweaks to PPS-related content
cpumask: make cpumask_next() out-of-line
kmod: move #ifdef CONFIG_MODULES wrapper to Makefile
kmod: split off umh headers into its own file
MAINTAINERS: clarify kmod is just a kernel module loader
kmod: split out umh code into its own file
test_kmod: flip INT checks to be consistent
test_kmod: remove paranoid UINT_MAX check on uint range processing
vfat: deduplicate hex2bin()
...
This reverts commit 1fccb73011.
Reported as Bug 196509 - iTCO_wdt regression reboot before timeout expire
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Add device-tree binding documentation SFP transceivers. Support for SFP
transceivers has been recently introduced (drivers/net/phy/sfp.c).
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
This complements commit 9a94b3a4bd (dt-binding: phy: don't confuse with
Ethernet phy properties).
The generic PHY 'phys' property sometime appears in the same node with
the Ethernet PHY 'phy' or 'phy-handle' properties. Add a warning in
ethernet.txt to reduce confusion.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
Collection of aesthetic adjustments to various PPS-related files,
directories and Documentation, some quite minor just for the sake of
consistency, including:
* Updated example of pps device tree node (courtesy Rodolfo G.)
* "PPS-API" -> "PPS API"
* "pps_source_info_s" -> "pps_source_info"
* "ktimer driver" -> "pps-ktimer driver"
* "ppstest /dev/pps0" -> "ppstest /dev/pps1" to match example
* Add missing PPS-related entries to MAINTAINERS file
* Other trivialities
Link: http://lkml.kernel.org/r/alpine.LFD.2.20.1708261048220.8106@localhost.localdomain
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Patch series "rbtree: Cache leftmost node internally", v4.
A series to extending rbtrees to internally cache the leftmost node such
that we can have fast overlap check optimization for all interval tree
users[1]. The benefits of this series are that:
(i) Unify users that do internal leftmost node caching.
(ii) Optimize all interval tree users.
(iii) Convert at least two new users (epoll and procfs) to the new interface.
This patch (of 16):
Red-black tree semantics imply that nodes with smaller or greater (or
equal for duplicates) keys always be to the left and right,
respectively. For the kernel this is extremely evident when considering
our rb_first() semantics. Enabling lookups for the smallest node in the
tree in O(1) can save a good chunk of cycles in not having to walk down
the tree each time. To this end there are a few core users that
explicitly do this, such as the scheduler and rtmutexes. There is also
the desire for interval trees to have this optimization allowing faster
overlap checking.
This patch introduces a new 'struct rb_root_cached' which is just the
root with a cached pointer to the leftmost node. The reason why the
regular rb_root was not extended instead of adding a new structure was
that this allows the user to have the choice between memory footprint
and actual tree performance. The new wrappers on top of the regular
rb_root calls are:
- rb_first_cached(cached_root) -- which is a fast replacement
for rb_first.
- rb_insert_color_cached(node, cached_root, new)
- rb_erase_cached(node, cached_root)
In addition, augmented cached interfaces are also added for basic
insertion and deletion operations; which becomes important for the
interval tree changes.
With the exception of the inserts, which adds a bool for updating the
new leftmost, the interfaces are kept the same. To this end, porting rb
users to the cached version becomes really trivial, and keeping current
rbtree semantics for users that don't care about the optimization
requires zero overhead.
Link: http://lkml.kernel.org/r/20170719014603.19029-2-dave@stgolabs.net
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Patch series "HMM (Heterogeneous Memory Management)", v25.
Heterogeneous Memory Management (HMM) (description and justification)
Today device driver expose dedicated memory allocation API through their
device file, often relying on a combination of IOCTL and mmap calls.
The device can only access and use memory allocated through this API.
This effectively split the program address space into object allocated
for the device and useable by the device and other regular memory
(malloc, mmap of a file, share memory, â) only accessible by
CPU (or in a very limited way by a device by pinning memory).
Allowing different isolated component of a program to use a device thus
require duplication of the input data structure using device memory
allocator. This is reasonable for simple data structure (array, grid,
image, â) but this get extremely complex with advance data
structure (list, tree, graph, â) that rely on a web of memory
pointers. This is becoming a serious limitation on the kind of work
load that can be offloaded to device like GPU.
New industry standard like C++, OpenCL or CUDA are pushing to remove
this barrier. This require a shared address space between GPU device
and CPU so that GPU can access any memory of a process (while still
obeying memory protection like read only). This kind of feature is also
appearing in various other operating systems.
HMM is a set of helpers to facilitate several aspects of address space
sharing and device memory management. Unlike existing sharing mechanism
that rely on pining pages use by a device, HMM relies on mmu_notifier to
propagate CPU page table update to device page table.
Duplicating CPU page table is only one aspect necessary for efficiently
using device like GPU. GPU local memory have bandwidth in the TeraBytes/
second range but they are connected to main memory through a system bus
like PCIE that is limited to 32GigaBytes/second (PCIE 4.0 16x). Thus it
is necessary to allow migration of process memory from main system memory
to device memory. Issue is that on platform that only have PCIE the
device memory is not accessible by the CPU with the same properties as
main memory (cache coherency, atomic operations, ...).
To allow migration from main memory to device memory HMM provides a set of
helper to hotplug device memory as a new type of ZONE_DEVICE memory which
is un-addressable by CPU but still has struct page representing it. This
allow most of the core kernel logic that deals with a process memory to
stay oblivious of the peculiarity of device memory.
When page backing an address of a process is migrated to device memory the
CPU page table entry is set to a new specific swap entry. CPU access to
such address triggers a migration back to system memory, just like if the
page was swap on disk. HMM also blocks any one from pinning a ZONE_DEVICE
page so that it can always be migrated back to system memory if CPU access
it. Conversely HMM does not migrate to device memory any page that is pin
in system memory.
To allow efficient migration between device memory and main memory a new
migrate_vma() helpers is added with this patchset. It allows to leverage
device DMA engine to perform the copy operation.
This feature will be use by upstream driver like nouveau mlx5 and probably
other in the future (amdgpu is next suspect in line). We are actively
working on nouveau and mlx5 support. To test this patchset we also worked
with NVidia close source driver team, they have more resources than us to
test this kind of infrastructure and also a bigger and better userspace
eco-system with various real industry workload they can be use to test and
profile HMM.
The expected workload is a program builds a data set on the CPU (from
disk, from network, from sensors, â). Program uses GPU API (OpenCL,
CUDA, ...) to give hint on memory placement for the input data and also
for the output buffer. Program call GPU API to schedule a GPU job, this
happens using device driver specific ioctl. All this is hidden from
programmer point of view in case of C++ compiler that transparently
offload some part of a program to GPU. Program can keep doing other stuff
on the CPU while the GPU is crunching numbers.
It is expected that CPU will not access the same data set as the GPU while
GPU is working on it, but this is not mandatory. In fact we expect some
small memory object to be actively access by both GPU and CPU concurrently
as synchronization channel and/or for monitoring purposes. Such object
will stay in system memory and should not be bottlenecked by system bus
bandwidth (rare write and read access from both CPU and GPU).
As we are relying on device driver API, HMM does not introduce any new
syscall nor does it modify any existing ones. It does not change any
POSIX semantics or behaviors. For instance the child after a fork of a
process that is using HMM will not be impacted in anyway, nor is there any
data hazard between child COW or parent COW of memory that was migrated to
device prior to fork.
HMM assume a numbers of hardware features. Device must allow device page
table to be updated at any time (ie device job must be preemptable).
Device page table must provides memory protection such as read only.
Device must track write access (dirty bit). Device must have a minimum
granularity that match PAGE_SIZE (ie 4k).
Reviewer (just hint):
Patch 1 HMM documentation
Patch 2 introduce core infrastructure and definition of HMM, pretty
small patch and easy to review
Patch 3 introduce the mirror functionality of HMM, it relies on
mmu_notifier and thus someone familiar with that part would be
in better position to review
Patch 4 is an helper to snapshot CPU page table while synchronizing with
concurrent page table update. Understanding mmu_notifier makes
review easier.
Patch 5 is mostly a wrapper around handle_mm_fault()
Patch 6 add new add_pages() helper to avoid modifying each arch memory
hot plug function
Patch 7 add a new memory type for ZONE_DEVICE and also add all the logic
in various core mm to support this new type. Dan Williams and
any core mm contributor are best people to review each half of
this patchset
Patch 8 special case HMM ZONE_DEVICE pages inside put_page() Kirill and
Dan Williams are best person to review this
Patch 9 allow to uncharge a page from memory group without using the lru
list field of struct page (best reviewer: Johannes Weiner or
Vladimir Davydov or Michal Hocko)
Patch 10 Add support to uncharge ZONE_DEVICE page from a memory cgroup (best
reviewer: Johannes Weiner or Vladimir Davydov or Michal Hocko)
Patch 11 add helper to hotplug un-addressable device memory as new type
of ZONE_DEVICE memory (new type introducted in patch 3 of this
serie). This is boiler plate code around memory hotplug and it
also pick a free range of physical address for the device memory.
Note that the physical address do not point to anything (at least
as far as the kernel knows).
Patch 12 introduce a new hmm_device class as an helper for device driver
that want to expose multiple device memory under a common fake
device driver. This is usefull for multi-gpu configuration.
Anyone familiar with device driver infrastructure can review
this. Boiler plate code really.
Patch 13 add a new migrate mode. Any one familiar with page migration is
welcome to review.
Patch 14 introduce a new migration helper (migrate_vma()) that allow to
migrate a range of virtual address of a process using device DMA
engine to perform the copy. It is not limited to do copy from and
to device but can also do copy between any kind of source and
destination memory. Again anyone familiar with migration code
should be able to verify the logic.
Patch 15 optimize the new migrate_vma() by unmapping pages while we are
collecting them. This can be review by any mm folks.
Patch 16 add unaddressable memory migration to helper introduced in patch
7, this can be review by anyone familiar with migration code
Patch 17 add a feature that allow device to allocate non-present page on
the GPU when migrating a range of address to device memory. This
is an helper for device driver to avoid having to first allocate
system memory before migration to device memory
Patch 18 add a new kind of ZONE_DEVICE memory for cache coherent device
memory (CDM)
Patch 19 add an helper to hotplug CDM memory
Previous patchset posting :
v1 http://lwn.net/Articles/597289/
v2 https://lkml.org/lkml/2014/6/12/559
v3 https://lkml.org/lkml/2014/6/13/633
v4 https://lkml.org/lkml/2014/8/29/423
v5 https://lkml.org/lkml/2014/11/3/759
v6 http://lwn.net/Articles/619737/
v7 http://lwn.net/Articles/627316/
v8 https://lwn.net/Articles/645515/
v9 https://lwn.net/Articles/651553/
v10 https://lwn.net/Articles/654430/
v11 http://www.gossamer-threads.com/lists/linux/kernel/2286424
v12 http://www.kernelhub.org/?msg=972982&p=2
v13 https://lwn.net/Articles/706856/
v14 https://lkml.org/lkml/2016/12/8/344
v15 http://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/msg1304107.html
v16 http://www.spinics.net/lists/linux-mm/msg119814.html
v17 https://lkml.org/lkml/2017/1/27/847
v18 https://lkml.org/lkml/2017/3/16/596
v19 https://lkml.org/lkml/2017/4/5/831
v20 https://lwn.net/Articles/720715/
v21 https://lkml.org/lkml/2017/4/24/747
v22 http://lkml.iu.edu/hypermail/linux/kernel/1705.2/05176.html
v23 https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1404788.html
v24 https://lwn.net/Articles/726691/
This patch (of 19):
This adds documentation for HMM (Heterogeneous Memory Management). It
presents the motivation behind it, the features necessary for it to be
useful and and gives an overview of how this is implemented.
Link: http://lkml.kernel.org/r/20170817000548.32038-2-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Nellans <dnellans@nvidia.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Evgeny Baskakov <ebaskakov@nvidia.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Mark Hairgrove <mhairgrove@nvidia.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Sherry Cheung <SCheung@nvidia.com>
Cc: Subhash Gutti <sgutti@nvidia.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Bob Liu <liubo95@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Several fixes from static analysis and message noise reduction. Correct
WMI core and related drivers to evaluate instance number 0x0 in
accordance with the documentation. Add intel-telemetry support for
Gemini Lake. Various individual driver fixes noted below.
Two commits appear here which were previously merged during the 4.13 RC
cycle:
- baa5480b05 platform/x86: dell-wmi: Fix driver interface version query
- c801603e6d platform/x86: intel-vbtn: match power button on press rather than release
dell-wmi:
- Update dell_wmi_check_descriptor_buffer() to new model
intel-vbtn:
- reduce unnecessary messages for normal users
- match power button on press rather than release
intel-hid:
- reduce unnecessary messages for normal users
thinkpad_acpi:
- Fix warning about deprecated hwmon_device_register
wmi:
- Fix check for method instance number
ideapad-laptop:
- Expose conservation mode switch
intel_pmc_core:
- Make the driver PCH family agnostic
peaq-wmi:
- Evaluate wmi method with instance number 0x0
- silence a static checker warning
mxm-wmi:
- Evaluate wmi method with instance number 0x0
asus-wmi:
- Evaluate wmi method with instance number 0x0
intel_scu_ipc:
- make intel_scu_ipc_pdata_t const
intel_mid_powerbtn:
- make mid_pb_ddata const
- fix error return code in mid_pb_probe()
hp-wmi:
- Remove unused macro helper
- Correctly determine method id in WMI calls
dell-wmi:
- Fix driver interface version query
intel_telemetry:
- remove redundant macro definition
- Add GLK PSS Event Table
alienware-wmi:
- fix format string overflow warning
ibm_rtl:
- remove unnecessary static in ibm_rtl_write()
msi-wmi:
- remove unnecessary static in msi_wmi_notify()
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Merge tag 'platform-drivers-x86-v4.14-1' of git://git.infradead.org/linux-platform-drivers-x86
Pull x86 platform driver updates from Darren Hart:
"Several fixes from static analysis and message noise reduction.
Correct WMI core and related drivers to evaluate instance number 0x0
in accordance with the documentation. Add intel-telemetry support for
Gemini Lake. Various individual driver fixes noted below.
dell-wmi:
- Update dell_wmi_check_descriptor_buffer() to new model
intel-vbtn:
- reduce unnecessary messages for normal users
- match power button on press rather than release
intel-hid:
- reduce unnecessary messages for normal users
thinkpad_acpi:
- Fix warning about deprecated hwmon_device_register
wmi:
- Fix check for method instance number
ideapad-laptop:
- Expose conservation mode switch
intel_pmc_core:
- Make the driver PCH family agnostic
peaq-wmi:
- Evaluate wmi method with instance number 0x0
- silence a static checker warning
mxm-wmi:
- Evaluate wmi method with instance number 0x0
asus-wmi:
- Evaluate wmi method with instance number 0x0
intel_scu_ipc:
- make intel_scu_ipc_pdata_t const
intel_mid_powerbtn:
- make mid_pb_ddata const
- fix error return code in mid_pb_probe()
hp-wmi:
- Remove unused macro helper
- Correctly determine method id in WMI calls
dell-wmi:
- Fix driver interface version query
intel_telemetry:
- remove redundant macro definition
- Add GLK PSS Event Table
alienware-wmi:
- fix format string overflow warning
ibm_rtl:
- remove unnecessary static in ibm_rtl_write()
msi-wmi:
- remove unnecessary static in msi_wmi_notify()"
* tag 'platform-drivers-x86-v4.14-1' of git://git.infradead.org/linux-platform-drivers-x86: (23 commits)
platform/x86: dell-wmi: Update dell_wmi_check_descriptor_buffer() to new model
platform/x86: intel-vbtn: reduce unnecessary messages for normal users
platform/x86: intel-hid: reduce unnecessary messages for normal users
platform/x86: thinkpad_acpi: Fix warning about deprecated hwmon_device_register
platform/x86: wmi: Fix check for method instance number
platform/x86: ideapad-laptop: Expose conservation mode switch
platform/x86: intel_pmc_core: Make the driver PCH family agnostic
platform/x86: peaq-wmi: Evaluate wmi method with instance number 0x0
platform/x86: mxm-wmi: Evaluate wmi method with instance number 0x0
platform/x86: asus-wmi: Evaluate wmi method with instance number 0x0
platform/x86: intel_scu_ipc: make intel_scu_ipc_pdata_t const
platform/x86: intel_mid_powerbtn: make mid_pb_ddata const
platform/x86: intel_mid_powerbtn: fix error return code in mid_pb_probe()
platform/x86: hp-wmi: Remove unused macro helper
platform/x86: hp-wmi: Correctly determine method id in WMI calls
platform/x86: intel-vbtn: match power button on press rather than release
platform/x86: dell-wmi: Fix driver interface version query
platform/x86: intel_telemetry: remove redundant macro definition
platform/x86: intel_telemetry: Add GLK PSS Event Table
platform/x86: alienware-wmi: fix format string overflow warning
...
- support for HSDK board hosting a Quad core HS38x4 based SoC running @ 1 GHz
(and some prerrquisite changes such as ability to scoot the kernel code/data
from start of memory map etc)
- Quite a few updates for EZChip (Mellanox) platform
- Fixes to fault/exception printing
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Merge tag 'arc-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC updates from Vineet Gupta:
- Support for HSDK board hosting a Quad core HS38x4 based SoC running
@1GHz (and some prerrquisite changes such as ability to scoot the
kernel code/data from start of memory map etc)
- Quite a few updates for EZChip (Mellanox) platform
- Fixes to fault/exception printing
* tag 'arc-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: (26 commits)
ARC: Re-enable MMU upon Machine Check exception
ARC: Show fault information passed to show_kernel_fault_diag()
ARC: [plat-hsdk] initial port for HSDK board
ARC: mm: Decouple RAM base address from kernel link address
ARCv2: IOC: Tighten up the contraints (specifically base / size alignment)
ARC: [plat-axs103] refactor the DT fudging code
ARC: [plat-axs103] use clk driver #2: Add core pll node to DT to manage cpu clk
ARC: [plat-axs103] use clk driver #1: Get rid of platform specific cpu clk setting
ARCv2: SLC: provide a line based flush routine for debugging
ARC: Hardcode ARCH_DMA_MINALIGN to max line length we may have
ARC: [plat-eznps] handle extra aux regs #2: kernel/entry exit
ARC: [plat-eznps] handle extra aux regs #1: save/restore on context switch
ARC: [plat-eznps] avoid toggling of DPC register
ARC: [plat-eznps] Update the init sequence of aux regs per cpu.
ARC: [plat-eznps] new command line argument for HW scheduler at MTM
ARC: set boot print log level to PR_INFO
ARC: [plat-eznps] Handle user memory error same in simulation and silicon
ARC: [plat-eznps] use schd.wft instruction instead of sleep at idle task
ARC: create cpu specific version of arch_cpu_idle()
ARC: [plat-eznps] spinlock aware for MTM
...
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Merge tag 'pci-v4.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- add enhanced Downstream Port Containment support, which prints more
details about Root Port Programmed I/O errors (Dongdong Liu)
- add Layerscape ls1088a and ls2088a support (Hou Zhiqiang)
- add MediaTek MT2712 and MT7622 support (Ryder Lee)
- add MediaTek MT2712 and MT7622 MSI support (Honghui Zhang)
- add Qualcom IPQ8074 support (Varadarajan Narayanan)
- add R-Car r8a7743/5 device tree support (Biju Das)
- add Rockchip per-lane PHY support for better power management (Shawn
Lin)
- fix IRQ mapping for hot-added devices by replacing the
pci_fixup_irqs() boot-time design with a host bridge hook called at
probe-time (Lorenzo Pieralisi, Matthew Minter)
- fix race when enabling two devices that results in upstream bridge
not being enabled correctly (Srinath Mannam)
- fix pciehp power fault infinite loop (Keith Busch)
- fix SHPC bridge MSI hotplug events by enabling bus mastering
(Aleksandr Bezzubikov)
- fix a VFIO issue by correcting PCIe capability sizes (Alex
Williamson)
- fix an INTD issue on Xilinx and possibly other drivers by unifying
INTx IRQ domain support (Paul Burton)
- avoid IOMMU stalls by marking AMD Stoney GPU ATS as broken (Joerg
Roedel)
- allow APM X-Gene device assignment to guests by adding an ACS quirk
(Feng Kan)
- fix driver crashes by disabling Extended Tags on Broadcom HT2100
(Extended Tags support is required for PCIe Receivers but not
Requesters, and we now enable them by default when Requesters support
them) (Sinan Kaya)
- fix MSIs for devices that use phantom RIDs for DMA by assuming MSIs
use the real Requester ID (not a phantom RID) (Robin Murphy)
- prevent assignment of Intel VMD children to guests (which may be
supported eventually, but isn't yet) by not associating an IOMMU with
them (Jon Derrick)
- fix Intel VMD suspend/resume by releasing IRQs on suspend (Scott
Bauer)
- fix a Function-Level Reset issue with Intel 750 NVMe by waiting
longer (up to 60sec instead of 1sec) for device to become ready
(Sinan Kaya)
- fix a Function-Level Reset issue on iProc Stingray by working around
hardware defects in the CRS implementation (Oza Pawandeep)
- fix an issue with Intel NVMe P3700 after an iProc reset by adding a
delay during shutdown (Oza Pawandeep)
- fix a Microsoft Hyper-V lockdep issue by polling instead of blocking
in compose_msi_msg() (Stephen Hemminger)
- fix a wireless LAN driver timeout by clearing DesignWare MSI
interrupt status after it is handled, not before (Faiz Abbas)
- fix DesignWare ATU enable checking (Jisheng Zhang)
- reduce Layerscape dependencies on the bootloader by doing more
initialization in the driver (Hou Zhiqiang)
- improve Intel VMD performance allowing allocation of more IRQ vectors
than present CPUs (Keith Busch)
- improve endpoint framework support for initial DMA mask, different
BAR sizes, configurable page sizes, MSI, test driver, etc (Kishon
Vijay Abraham I, Stan Drozd)
- rework CRS support to add periodic messages while we poll during
enumeration and after Function-Level Reset and prepare for possible
other uses of CRS (Sinan Kaya)
- clean up Root Port AER handling by removing unnecessary code and
moving error handler methods to struct pcie_port_service_driver
(Christoph Hellwig)
- clean up error handling paths in various drivers (Bjorn Andersson,
Fabio Estevam, Gustavo A. R. Silva, Harunobu Kurokawa, Jeffy Chen,
Lorenzo Pieralisi, Sergei Shtylyov)
- clean up SR-IOV resource handling by disabling VF decoding before
updating the corresponding resource structs (Gavin Shan)
- clean up DesignWare-based drivers by unifying quirks to update Class
Code and Interrupt Pin and related handling of write-protected
registers (Hou Zhiqiang)
- clean up by adding empty generic pcibios_align_resource() and
pcibios_fixup_bus() and removing empty arch-specific implementations
(Palmer Dabbelt)
- request exclusive reset control for several drivers to allow cleanup
elsewhere (Philipp Zabel)
- constify various structures (Arvind Yadav, Bhumika Goyal)
- convert from full_name() to %pOF (Rob Herring)
- remove unused variables from iProc, HiSi, Altera, Keystone (Shawn
Lin)
* tag 'pci-v4.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (170 commits)
PCI: xgene: Clean up whitespace
PCI: xgene: Define XGENE_PCI_EXP_CAP and use generic PCI_EXP_RTCTL offset
PCI: xgene: Fix platform_get_irq() error handling
PCI: xilinx-nwl: Fix platform_get_irq() error handling
PCI: rockchip: Fix platform_get_irq() error handling
PCI: altera: Fix platform_get_irq() error handling
PCI: spear13xx: Fix platform_get_irq() error handling
PCI: artpec6: Fix platform_get_irq() error handling
PCI: armada8k: Fix platform_get_irq() error handling
PCI: dra7xx: Fix platform_get_irq() error handling
PCI: exynos: Fix platform_get_irq() error handling
PCI: iproc: Clean up whitespace
PCI: iproc: Rename PCI_EXP_CAP to IPROC_PCI_EXP_CAP
PCI: iproc: Add 500ms delay during device shutdown
PCI: Fix typos and whitespace errors
PCI: Remove unused "res" variable from pci_resource_io()
PCI: Correct kernel-doc of pci_vpd_srdt_size(), pci_vpd_srdt_tag()
PCI/AER: Reformat AER register definitions
iommu/vt-d: Prevent VMD child devices from being remapping targets
x86/PCI: Use is_vmd() rather than relying on the domain number
...
Common:
- improve heuristic for boosting preempted spinlocks by ignoring VCPUs
in user mode
ARM:
- fix for decoding external abort types from guests
- added support for migrating the active priority of interrupts when
running a GICv2 guest on a GICv3 host
- minor cleanup
PPC:
- expose storage keys to userspace
- merge powerpc/topic/ppc-kvm branch that contains
find_linux_pte_or_hugepte and POWER9 thread management cleanup
- merge kvm-ppc-fixes with a fix that missed 4.13 because of vacations
- fixes
s390:
- merge of topic branch tlb-flushing from the s390 tree to get the
no-dat base features
- merge of kvm/master to avoid conflicts with additional sthyi fixes
- wire up the no-dat enhancements in KVM
- multiple epoch facility (z14 feature)
- Configuration z/Architecture Mode
- more sthyi fixes
- gdb server range checking fix
- small code cleanups
x86:
- emulate Hyper-V TSC frequency MSRs
- add nested INVPCID
- emulate EPTP switching VMFUNC
- support Virtual GIF
- support 5 level page tables
- speedup nested VM exits by packing byte operations
- speedup MMIO by using hardware provided physical address
- a lot of fixes and cleanups, especially nested
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Merge tag 'kvm-4.14-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Radim Krčmář:
"First batch of KVM changes for 4.14
Common:
- improve heuristic for boosting preempted spinlocks by ignoring
VCPUs in user mode
ARM:
- fix for decoding external abort types from guests
- added support for migrating the active priority of interrupts when
running a GICv2 guest on a GICv3 host
- minor cleanup
PPC:
- expose storage keys to userspace
- merge kvm-ppc-fixes with a fix that missed 4.13 because of
vacations
- fixes
s390:
- merge of kvm/master to avoid conflicts with additional sthyi fixes
- wire up the no-dat enhancements in KVM
- multiple epoch facility (z14 feature)
- Configuration z/Architecture Mode
- more sthyi fixes
- gdb server range checking fix
- small code cleanups
x86:
- emulate Hyper-V TSC frequency MSRs
- add nested INVPCID
- emulate EPTP switching VMFUNC
- support Virtual GIF
- support 5 level page tables
- speedup nested VM exits by packing byte operations
- speedup MMIO by using hardware provided physical address
- a lot of fixes and cleanups, especially nested"
* tag 'kvm-4.14-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (67 commits)
KVM: arm/arm64: Support uaccess of GICC_APRn
KVM: arm/arm64: Extract GICv3 max APRn index calculation
KVM: arm/arm64: vITS: Drop its_ite->lpi field
KVM: arm/arm64: vgic: constify seq_operations and file_operations
KVM: arm/arm64: Fix guest external abort matching
KVM: PPC: Book3S HV: Fix memory leak in kvm_vm_ioctl_get_htab_fd
KVM: s390: vsie: cleanup mcck reinjection
KVM: s390: use WARN_ON_ONCE only for checking
KVM: s390: guestdbg: fix range check
KVM: PPC: Book3S HV: Report storage key support to userspace
KVM: PPC: Book3S HV: Fix case where HDEC is treated as 32-bit on POWER9
KVM: PPC: Book3S HV: Fix invalid use of register expression
KVM: PPC: Book3S HV: Fix H_REGISTER_VPA VPA size validation
KVM: PPC: Book3S HV: Fix setting of storage key in H_ENTER
KVM: PPC: e500mc: Fix a NULL dereference
KVM: PPC: e500: Fix some NULL dereferences on error
KVM: PPC: Book3S HV: Protect updates to spapr_tce_tables list
KVM: s390: we are always in czam mode
KVM: s390: expose no-DAT to guest and migration support
KVM: s390: sthyi: remove invalid guest write access
...
This commit applies memory-barriers.txt part of upstream change, commit
706eeb3e9c ("Documentation/locking/atomic: Add documents for new
atomic_t APIs") to Korean translation.
Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit applies upstream change, commit 66ce3a4dcb ("doc: Update
memory-barriers.txt for read-to-write dependencies") to Korean
translation.
Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Only the media PDF book was requiring adjustbox, in order to
scale big tables. That worked pretty good with Sphinx versions
1.4 and 1.5, but Spinx 1.6 changed the way tables are produced,
by introducing some weird macros before tabulary.
That causes adjustbox to fail. So, it can't be used anymore,
and its usage was removed from the media book.
So, let's remove it from conf.py and sphinx-pre-install.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Sphinx 1.5 added a new way to change backward colors for note
boxes, but kept backward compatibility with 1.4. On Sphinx 1.6,
the old way stopped working, in favor of a new less hackish
way.
Unfortunately, this is currently too buggy to be used, and
the old way doesn't work anymore. So, we have no option but
to stick with boring notice boxes.
One example of such bug is the notice that it is inside
struct v4l2_plane, at the "bytesused" field.
At least, add a notice about how to use, as maybe some day
the bug will vanish.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Only the media book used this extension in the past, but
it is not required anymore.
Cleanup patch only.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This fix was intended for 4.13, but didn't get in because both
maintainers were on vacation.
Paul Mackerras:
"It adds mutual exclusion between list_add_rcu and list_del_rcu calls
on the kvm->arch.spapr_tce_tables list. Without this, userspace could
potentially trigger corruption of the list and cause a host crash or
worse."
Remove our use of 'gperf' for generating perfect hashes from some of our
build tools.
This removal was prompted by Masahiro Yamada sending out a patch that
removes all our pre-generated files, and when I tested it, I noticed
that the gperf version I have (3.1) apparently generates code that no
longer works with out code-base because the function interfaces
generated by gperf have changed.
We really don't care that much, and the gperf people changed their
interfaces in ways that makes it annoying to work with them. Tools that
make it hard to use them should not be used, and the kernel is not at
all interested in some autoconf mess. So remove the gperf dependency
entirely.
It turns out that if you ignore the pre-generated files, the use of
gperf apparently saved us a whopping fifteen lines of code. It
obviously wasn't worth it, considering that the pre-generated files are
about 500 lines.
I sent this out as a patch about three weeks ago, and got absolutely
zero responses. So let's see if anybody notices now that I merge it.
Because there might be serious bugs here, but it WorksForMe(tm).
* gperf-removal:
Remove gperf usage from toolchain
This is mostly updates of the usual suspects: lpfc, qla2xxx, hisi_sas, megaraid_sas, zfcp and a host of minor updates.
The major driver change here is the elimination of the block based
cciss driver in favour of the SCSI based hpsa driver (which now drives
all the legacy cases cciss used to be required for). Plus a reset
handler clean up and the redo of the SAS SMP handler to use bsg lib.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This is mostly updates of the usual suspects: lpfc, qla2xxx, hisi_sas,
megaraid_sas, zfcp and a host of minor updates.
The major driver change here is the elimination of the block based
cciss driver in favour of the SCSI based hpsa driver (which now drives
all the legacy cases cciss used to be required for). Plus a reset
handler clean up and the redo of the SAS SMP handler to use bsg lib"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (279 commits)
scsi: scsi-mq: Always unprepare before requeuing a request
scsi: Show .retries and .jiffies_at_alloc in debugfs
scsi: Improve requeuing behavior
scsi: Call scsi_initialize_rq() for filesystem requests
scsi: qla2xxx: Reset the logo flag, after target re-login.
scsi: qla2xxx: Fix slow mem alloc behind lock
scsi: qla2xxx: Clear fc4f_nvme flag
scsi: qla2xxx: add missing includes for qla_isr
scsi: qla2xxx: Fix an integer overflow in sysfs code
scsi: aacraid: report -ENOMEM to upper layer from aac_convert_sgraw2()
scsi: aacraid: get rid of one level of indentation
scsi: aacraid: fix indentation errors
scsi: storvsc: fix memory leak on ring buffer busy
scsi: scsi_transport_sas: switch to bsg-lib for SMP passthrough
scsi: smartpqi: remove the smp_handler stub
scsi: hpsa: remove the smp_handler stub
scsi: bsg-lib: pass the release callback through bsg_setup_queue
scsi: Rework handling of scsi_device.vpd_pg8[03]
scsi: Rework the code for caching Vital Product Data (VPD)
scsi: rcu: Introduce rcu_swap_protected()
...
- Convert more DT code to use of_property_read_* API.
- Improve DT overlay support when adding multiple overlays.
- Convert printk's to %pOF format specifiers. Most went via subsystem
trees, but picked up the remaining orphans.
- Correct unittests to use preferred "okay" for "status" property value.
- Add a KASLR seed property.
- Vendor prefixes for Mellanox, Theobroma System, Adaptrum, Moxa.
- Fix modalias buffer handling.
- Clean-up of include paths for building dtbs.
- Add bindings for amc6821, isl1208, tsl2x7x, srf02, and srf10 devices.
- Add nvmem bindings for MediaTek MT7623 and MT7622 SoC.
- Add compatible string for Allwinner H5 Mali-450 GPU.
- Fix links to old OpenFirmware docs with new mirror on devicetree.org.
- Remove status property from binding doc examples.
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Merge tag 'devicetree-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree updates from Rob Herring:
"There's a few orphans in the conversion to %pOF printf specifiers
included here that no one else picked up.
Summary:
- Convert more DT code to use of_property_read_* API.
- Improve DT overlay support when adding multiple overlays
- Convert printk's to %pOF format specifiers. Most went via subsystem
trees, but picked up the remaining orphans
- Correct unittests to use preferred "okay" for "status" property
value
- Add a KASLR seed property
- Vendor prefixes for Mellanox, Theobroma System, Adaptrum, Moxa
- Fix modalias buffer handling
- Clean-up of include paths for building dtbs
- Add bindings for amc6821, isl1208, tsl2x7x, srf02, and srf10
devices
- Add nvmem bindings for MediaTek MT7623 and MT7622 SoC
- Add compatible string for Allwinner H5 Mali-450 GPU
- Fix links to old OpenFirmware docs with new mirror on
devicetree.org
- Remove status property from binding doc examples"
* tag 'devicetree-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (45 commits)
devicetree: Adjust status "ok" -> "okay" under drivers/of/
dt-bindings: Remove "status" from examples
dt-bindings: pinctrl: sh-pfc: Use generic node name
dt-bindings: Add vendor Mellanox
dt-binding: net/phy: fix interrupts description
virt: Convert to using %pOF instead of full_name
macintosh: Convert to using %pOF instead of full_name
ide: pmac: Convert to using %pOF instead of full_name
microblaze: Convert to using %pOF instead of full_name
dt-bindings: usb: musb: Grammar s/the/to/, s/is/are/
of: Use PLATFORM_DEVID_NONE definition
of/device: Fix of_device_get_modalias() buffer handling
of/device: Prevent buffer overflow in of_device_modalias()
dt-bindings: add amc6821, isl1208 trivial bindings
dt-bindings: add vendor prefix for Theobroma Systems
of: search scripts/dtc/include-prefixes path for both CPP and DTC
of: remove arch/$(SRCARCH)/boot/dts from include search path for CPP
of: remove drivers/of/testcase-data from include search path for CPP
of: return of_get_cpu_node from of_cpu_device_node_get if CPUs are not registered
iio: srf08: add device tree binding for srf02 and srf10
...
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Merge tag 'leds_for_4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED updates from Jacek Anaszewski:
"LED class drivers improvements:
leds-pca955x:
- add Device Tree support and bindings
- use devm_led_classdev_register()
- add GPIO support
- prevent crippled LED class device name
- check for I2C errors
leds-gpio:
- add optional retain-state-shutdown DT property
- allow LED to retain state at shutdown
leds-tlc591xx:
- merge conditional tests
- add missing of_node_put
leds-powernv:
- delete an error message for a failed memory allocation in
powernv_led_create()
leds-is31fl32xx.c
- convert to using custom %pOF printf format specifier
Constify attribute_group structures in:
- leds-blinkm
- leds-lm3533
Make several arrays static const in:
- leds-aat1290
- leds-lp5521
- leds-lp5562
- leds-lp8501"
* tag 'leds_for_4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
leds: pca955x: check for I2C errors
leds: gpio: Allow LED to retain state at shutdown
dt-bindings: leds: gpio: Add optional retain-state-shutdown property
leds: powernv: Delete an error message for a failed memory allocation in powernv_led_create()
leds: lp8501: make several arrays static const
leds: lp5562: make several arrays static const
leds: lp5521: make several arrays static const
leds: aat1290: make array max_mm_current_percent static const
leds: pca955x: Prevent crippled LED device name
leds: lm3533: constify attribute_group structure
dt-bindings: leds: add pca955x
leds: pca955x: add GPIO support
leds: pca955x: use devm_led_classdev_register
leds: pca955x: add device tree support
leds: Convert to using %pOF instead of full_name
leds: blinkm: constify attribute_group structures.
leds: tlc591xx: add missing of_node_put
leds: tlc591xx: merge conditional tests
- Removal of DMA_SG support as we have no users for this feature
- New driver for Altera / Intel mSGDMA IP core
- Support for memset in dmatest and qcom_hidma driver
- Update for non cyclic mode in k3dma, bunch of update in bam_dma, bcm sba-raid
- Constify device ids across drivers
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Merge tag 'dmaengine-4.14-rc1' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine updates from Vinod Koul:
"This one features the usual updates to the drivers and one good part
of removing DA_SG from core as it has no users.
Summary:
- Remove DMA_SG support as we have no users for this feature
- New driver for Altera / Intel mSGDMA IP core
- Support for memset in dmatest and qcom_hidma driver
- Update for non cyclic mode in k3dma, bunch of update in bam_dma,
bcm sba-raid
- Constify device ids across drivers"
* tag 'dmaengine-4.14-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (52 commits)
dmaengine: sun6i: support V3s SoC variant
dmaengine: sun6i: make gate bit in sun8i's DMA engines a common quirk
dmaengine: rcar-dmac: document R8A77970 bindings
dmaengine: xilinx_dma: Fix error code format specifier
dmaengine: altera: Use macros instead of structs to describe the registers
dmaengine: ti-dma-crossbar: Fix dra7 reserve function
dmaengine: pl330: constify amba_id
dmaengine: pl08x: constify amba_id
dmaengine: bcm-sba-raid: Remove redundant SBA_REQUEST_STATE_COMPLETED
dmaengine: bcm-sba-raid: Explicitly ACK mailbox message after sending
dmaengine: bcm-sba-raid: Add debugfs support
dmaengine: bcm-sba-raid: Remove redundant SBA_REQUEST_STATE_RECEIVED
dmaengine: bcm-sba-raid: Re-factor sba_process_deferred_requests()
dmaengine: bcm-sba-raid: Pre-ack async tx descriptor
dmaengine: bcm-sba-raid: Peek mbox when we have no free requests
dmaengine: bcm-sba-raid: Alloc resources before registering DMA device
dmaengine: bcm-sba-raid: Improve sba_issue_pending() run duration
dmaengine: bcm-sba-raid: Increase number of free sba_request
dmaengine: bcm-sba-raid: Allow arbitrary number free sba_request
dmaengine: bcm-sba-raid: Remove reqs_free_count from sba_device
...
- RK805 Power Management IC (PMIC)
- ROHM BD9571MWV-M MFD Power Management IC (PMIC)
- Texas Instruments TPS68470 Power Management IC (PMIC) & LEDs
- New Device Support
- Add support for HiSilicon Hi6421v530 to hi6421-pmic-core
- Add support for X-Powers AXP806 to axp20x
- Add support for X-Powers AXP813 to axp20x
- Add support for Intel Sunrise Point LPSS to intel-lpss-pci
- New Functionality
- Amend API to provide register layout; atmel-smc
- Fix-ups
- DT re-work; omap, nokia
- Header file location change {I2C => MFD}; dm355evm_msp, tps65010
- Fix chip ID formatting issue(s); rk808
- Optionally register touchscreen devices; da9052-core
- Documentation improvements; twl-core
- Constification; rtsx_pcr, ab8500-core, da9055-i2c, da9052-spi
- Drop unnecessary static declaration; max8925-i2c
- Kconfig changes (missing deps and remove module support)
- Slim down oversized licence statement; hi6421-pmic-core
- Use managed resources (devm_*); lp87565
- Supply proper error checking/handling; t7l66xb
- Bug Fixes
- Fix counter duplication issue; da9052-core
- Fix potential NULL deference issue; max8998
- Leave SPI-NOR write-protection bit alone; lpc_ich
- Ensure device is put into reset during suspend; intel-lpss
- Correct register offset variable size; omap-usb-tll
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Merge tag 'mfd-next-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New Drivers
- RK805 Power Management IC (PMIC)
- ROHM BD9571MWV-M MFD Power Management IC (PMIC)
- Texas Instruments TPS68470 Power Management IC (PMIC) & LEDs
New Device Support:
- Add support for HiSilicon Hi6421v530 to hi6421-pmic-core
- Add support for X-Powers AXP806 to axp20x
- Add support for X-Powers AXP813 to axp20x
- Add support for Intel Sunrise Point LPSS to intel-lpss-pci
New Functionality:
- Amend API to provide register layout; atmel-smc
Fix-ups:
- DT re-work; omap, nokia
- Header file location change {I2C => MFD}; dm355evm_msp, tps65010
- Fix chip ID formatting issue(s); rk808
- Optionally register touchscreen devices; da9052-core
- Documentation improvements; twl-core
- Constification; rtsx_pcr, ab8500-core, da9055-i2c, da9052-spi
- Drop unnecessary static declaration; max8925-i2c
- Kconfig changes (missing deps and remove module support)
- Slim down oversized licence statement; hi6421-pmic-core
- Use managed resources (devm_*); lp87565
- Supply proper error checking/handling; t7l66xb
Bug Fixes:
- Fix counter duplication issue; da9052-core
- Fix potential NULL deference issue; max8998
- Leave SPI-NOR write-protection bit alone; lpc_ich
- Ensure device is put into reset during suspend; intel-lpss
- Correct register offset variable size; omap-usb-tll"
* tag 'mfd-next-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (61 commits)
mfd: intel_soc_pmic: Differentiate between Bay and Cherry Trail CRC variants
mfd: intel_soc_pmic: Export separate mfd-cell configs for BYT and CHT
dt-bindings: mfd: Add bindings for ZII RAVE devices
mfd: omap-usb-tll: Fix register offsets
mfd: da9052: Constify spi_device_id
mfd: intel-lpss: Put I2C and SPI controllers into reset state on suspend
mfd: da9055: Constify i2c_device_id
mfd: intel-lpss: Add missing PCI ID for Intel Sunrise Point LPSS devices
mfd: t7l66xb: Handle return value of clk_prepare_enable
mfd: Add ROHM BD9571MWV-M PMIC DT bindings
mfd: intel_soc_pmic_chtwc: Turn Kconfig option into a bool
mfd: lp87565: Convert to use devm_mfd_add_devices()
mfd: Add support for TPS68470 device
mfd: lpc_ich: Do not touch SPI-NOR write protection bit on Haswell/Broadwell
mfd: syscon: atmel-smc: Add helper to retrieve register layout
mfd: axp20x: Use correct platform device ID for many PEK
dt-bindings: mfd: axp20x: Introduce bindings for AXP813
mfd: axp20x: Add support for AXP813 PMIC
dt-bindings: mfd: axp20x: Add AXP806 to supported list of chips
mfd: Add ROHM BD9571MWV-M MFD PMIC driver
...
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Merge tag 'media/v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
"Brazil's Independence Day pull request :-)
This is one of the biggest media pull requests, with 625 patches
affecting almost all parts of media (RC, DVB, V4L2, CEC, docs).
This contains:
- A lot of new drivers:
* DVB frontends: mxl5xx, stv0910, stv6111;
* camera flash: as3645a led driver;
* HDMI receiver: adv748X;
* camera sensor: Omnivision 6650 5M driver (ov6650);
* HDMI CEC: ao-cec meson driver;
* V4L2: Qualcom camss driver;
* Remote controller: gpio-ir-tx, pwm-ir-tx and zx-irdec drivers.
- The DDbridge DVB driver got a massive update, with makes it in sync
with modern hardware from that vendor;
- There's an important milestone on this series: the DVB
documentation was written in 2003, but only started to be updated
in 2007. It also used to contain several gaps from the time it was
kept out of tree, mentioning error codes and device nodes that
never existed upstream. On this series, it received a massive
update: all non-deprecated digital TV APIs are now in sync with the
current implementation;
- Some DVB APIs that aren't used by any upstream driver got removed;
- Other parts of the media documentation algo got updated, fixing
some bugs on its PDF output and making it compatible with Sphinx
version 1.6.
As the number of hacks required to build PDF output reduced, I hope
we'll have less troubles as newer versions of our documentation
toolchain are released (famous last words);
- As usual, lots of driver cleanups and improvements"
* tag 'media/v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (624 commits)
media: leds: as3645a: add V4L2_FLASH_LED_CLASS dependency
media: get rid of removed DMX_GET_CAPS and DMX_SET_SOURCE leftovers
media: Revert "[media] v4l: async: make v4l2 coexist with devicetree nodes in a dt overlay"
media: staging: atomisp: sh_css_calloc shall return a pointer to the allocated space
media: Revert "[media] lirc_dev: remove superfluous get/put_device() calls"
media: add qcom_camss.rst to v4l-drivers rst file
media: dvb headers: make checkpatch happier
media: dvb uapi: move frontend legacy API to another part of the book
media: pixfmt-srggb12p.rst: better format the table for PDF output
media: docs-rst: media: Don't use \small for V4L2_PIX_FMT_SRGGB10 documentation
media: index.rst: don't write "Contents:" on PDF output
media: pixfmt*.rst: replace a two dots by a comma
media: vidioc-g-fmt.rst: adjust table format
media: vivid.rst: add a blank line to correct ReST format
media: v4l2 uapi book: get rid of driver programming's chapter
media: format.rst: use the right markup for important notes
media: docs-rst: cardlists: change their format to flat-tables
media: em28xx-cardlist.rst: update to reflect last changes
media: v4l2-event.rst: adjust table to fit on PDF output
media: docs: don't show ToC for each part on PDF output
...
We have touched quite a lot of files but with fewer changes at this
cycle; as you can see, most of changes are trivial fixes, especially
constification patches. Among the massive attacks by constification
gangs, we had a few core changes (mostly for ASoC core), as well the
fixes and the updates by major vendors. Some highlights are below:
ALSA core:
- Fix possible races in control API user-TLV codes
- Small cleanup of PCM core
ASoC:
- Continued work for componentization; still half-baked, but we're
certainly progressing
- Use of devres for jack detection GPIOs, rather as a cleanup
- Jack detection support for Qualcomm MSM8916
- Support for Allwinner H3, Cirrus Logic CS43130, Intel Kabylake
systems with RT5663, Realtek RT274, TI TLV320AIC32x6 and Wolfson
WM8523
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Merge tag 'sound-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"We have touched quite a lot of files but with fewer changes at this
cycle; as you can see, most of changes are trivial fixes, especially
constification patches.
Among the massive attacks by constification gangs, we had a few core
changes (mostly for ASoC core), as well the fixes and the updates by
major vendors.
Some highlights:
ALSA core:
- Fix possible races in control API user-TLV codes
- Small cleanup of PCM core
ASoC:
- Continued work for componentization; still half-baked, but we're
certainly progressing
- Use of devres for jack detection GPIOs, rather as a cleanup
- Jack detection support for Qualcomm MSM8916
- Support for Allwinner H3, Cirrus Logic CS43130, Intel Kabylake
systems with RT5663, Realtek RT274, TI TLV320AIC32x6 and Wolfson
WM8523"
* tag 'sound-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (512 commits)
ALSA: hda/ca0132 - Fix memory leak at error path
ALSA: hda: Fix forget to free resource in error handling code path in hda_codec_driver_probe
ASoC: cs43130: Fix unused compiler warnings for PM runtime
ASoC: cs43130: Fix possible Oops with invalid dev_id
ASoC: cs43130: fix spelling mistake: "irq_occurrance" -> "irq_occurrence"
ALSA: atmel: Remove leftovers of AVR32 removal
ALSA: atmel: convert AC97c driver to GPIO descriptor API
ALSA: hda/realtek - Enable jack detection function for Intel ALC700
ALSA: hda: Fix regression of hdmi eld control created based on invalid pcm
ASoC: Intel: Skylake: Add IPC to configure the copier secondary pins
ASoC: add missing compile rule for max98371
ASoC: add missing compile rule for sirf-audio-codec
ASoC: add missing compile rule for max98371
ASoC: cs43130: Add devicetree bindings for CS43130
ASoC: cs43130: Add support for CS43130 codec
ASoC: make clock direction configurable in asoc-simple
ALSA: ctxfi: Remove null check before kfree
ASoC: max98927: Changed device property read function
ASoC: max98927: Modified DAPM widget and map to enable/disable VI sense path
ASoC: max98927: Added PM suspend and resume function
...
- Continue to refactor the mmc block code to prepare for blkmq
- Move mmc block debugfs into block module
- Next step for eMMC CMDQ by adding a new mmc host interface for it
- Move Kconfig option MMC_DEBUG from core to host
- Some additional minor improvements
MMC host:
- Declare structs as const when applicable
- Explicitly request exclusive reset control when applicable
- Improve some error paths and other various cleanups
- sdhci: Preparations to support SDHCI OMAP
- sdhci: Improve some PM related code
- sdhci: Re-factoring and modernizations
- sdhci-xenon: Add runtime PM and system sleep support
- sdhci-xenon: Add support for eMMC HS400 Enhanced Strobe
- sdhci-cadence: Add system sleep support
- sdhci-of-at91: Improve system sleep support
- dw_mmc: Add support for Hisilicon hi3660
- sunxi: Add support for A83T eMMC
- sunxi: Add support for DDR52 mode
- meson-gx: Add support for UHS-I SD-cards
- meson-gx: Cleanups and improvements
- tmio: Fix CMD12 (STOP) handling
- tmio: Cleanups and improvements
- renesas_sdhi: Add r8a7743/5 support
- renesas-sdhi: Add support for R-Car Gen3 SDHI DMAC
- renesas_sdhi: Cleanups and improvements
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Merge tag 'mmc-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC updates from Ulf Hansson:
"MMC core:
- Continue to refactor the mmc block code to prepare for blkmq
- Move mmc block debugfs into block module
- Next step for eMMC CMDQ by adding a new mmc host interface for it
- Move Kconfig option MMC_DEBUG from core to host
- Some additional minor improvements
MMC host:
- Declare structs as const when applicable
- Explicitly request exclusive reset control when applicable
- Improve some error paths and other various cleanups
- sdhci: Preparations to support SDHCI OMAP
- sdhci: Improve some PM related code
- sdhci: Re-factoring and modernizations
- sdhci-xenon: Add runtime PM and system sleep support
- sdhci-xenon: Add support for eMMC HS400 Enhanced Strobe
- sdhci-cadence: Add system sleep support
- sdhci-of-at91: Improve system sleep support
- dw_mmc: Add support for Hisilicon hi3660
- sunxi: Add support for A83T eMMC
- sunxi: Add support for DDR52 mode
- meson-gx: Add support for UHS-I SD-cards
- meson-gx: Cleanups and improvements
- tmio: Fix CMD12 (STOP) handling
- tmio: Cleanups and improvements
- renesas_sdhi: Add r8a7743/5 support
- renesas-sdhi: Add support for R-Car Gen3 SDHI DMAC
- renesas_sdhi: Cleanups and improvements"
* tag 'mmc-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (145 commits)
mmc: renesas_sdhi: Add r8a7743/5 support
mmc: meson-gx: fix __ffsdi2 undefined on arm32
mmc: sdhci-xenon: add runtime pm support and reimplement standby
mmc: core: Move mmc_start_areq() declaration
mmc: mmci: stop building qcom dml as module
mmc: sunxi: Reset the device at probe time
clk: sunxi-ng: Provide a default reset hook
mmc: meson-gx: rework tuning function
mmc: meson-gx: change default tx phase
mmc: meson-gx: implement voltage switch callback
mmc: meson-gx: use CCF to handle the clock phases
mmc: meson-gx: implement card_busy callback
mmc: meson-gx: simplify interrupt handler
mmc: meson-gx: work around clk-stop issue
mmc: meson-gx: fix dual data rate mode frequencies
mmc: meson-gx: rework clock init function
mmc: meson-gx: rework clk_set function
mmc: meson-gx: rework set_ios function
mmc: meson-gx: cfg init overwrite values
mmc: meson-gx: initialize sane clk default before clock register
...
* pci/host-rockchip:
PCI: rockchip: Fix platform_get_irq() error handling
PCI: rockchip: Umap IO space if probe fails
PCI: rockchip: Remove IRQ domain if probe fails
PCI: rockchip: Disable vpcie0v9 if resume_noirq fails
PCI: rockchip: Clean up PHY if driver probe or resume fails
PCI: rockchip: Factor out rockchip_pcie_deinit_phys()
PCI: rockchip: Factor out rockchip_pcie_disable_clocks()
PCI: rockchip: Factor out rockchip_pcie_enable_clocks()
PCI: rockchip: Factor out rockchip_pcie_setup_irq()
PCI: rockchip: Use gpiod_set_value_cansleep() to allow reset via expanders
PCI: rockchip: Use PCI_NUM_INTX
PCI: rockchip: Explicitly request exclusive reset control
dt-bindings: phy-rockchip-pcie: Convert to per-lane PHY model
dt-bindings: PCI: rockchip: Convert to per-lane PHY model
arm64: dts: rockchip: convert PCIe to use per-lane PHYs for rk3339
PCI: rockchip: Idle inactive PHY(s)
phy: rockchip-pcie: Reconstruct driver to support per-lane PHYs
PCI: rockchip: Add per-lane PHY support
PCI: rockchip: Factor out rockchip_pcie_get_phys()
PCI: rockchip: Control optional 12v power supply
dt-bindings: PCI: rockchip: Add vpcie12v-supply for Rockchip PCIe controller
* pci/host-rcar:
PCI: rcar: Add device tree support for r8a7743/5
PCI: rcar: Fix memory leak when no PCIe card is inserted
PCI: rcar: Fix error exit path
* pci/host-qcom:
PCI: qcom: Add support for IPQ8074 PCIe controller
dt-bindings: PCI: qcom: Add support for IPQ8074
PCI: qcom: Use block IP version for operations
PCI: qcom: Explicitly request exclusive reset control
PCI: qcom: Use gpiod_set_value_cansleep() to allow reset via expanders
* pci/host-mediatek:
PCI: mediatek: Use PCI_NUM_INTX
PCI: mediatek: Add MSI support for MT2712 and MT7622
PCI: mediatek: Use bus->sysdata to get host private data
dt-bindings: PCI: Add support for MT2712 and MT7622
PCI: mediatek: Add controller support for MT2712 and MT7622
dt-bindings: PCI: Cleanup MediaTek binding text
dt-bindings: PCI: Rename MediaTek binding
PCI: mediatek: Switch to use platform_get_resource_byname()
PCI: mediatek: Add a structure to abstract the controller generations
PCI: mediatek: Rename port->index and mtk_pcie_parse_ports()
PCI: mediatek: Use readl_poll_timeout() to wait for Gen2 training
PCI: mediatek: Explicitly request exclusive reset control
Nothing really major this release, despite quite a lot of activity. Just lots of
things all over the place.
Some things of note include:
- Access via perf to a new type of PMU (IMC) on Power9, which can count both
core events as well as nest unit events (Memory controller etc).
- Optimisations to the radix MMU TLB flushing, mostly to avoid unnecessary Page
Walk Cache (PWC) flushes when the structure of the tree is not changing.
- Reworks/cleanups of do_page_fault() to modernise it and bring it closer to
other architectures where possible.
- Rework of our page table walking so that THP updates only need to send IPIs
to CPUs where the affected mm has run, rather than all CPUs.
- The size of our vmalloc area is increased to 56T on 64-bit hash MMU systems.
This avoids problems with the percpu allocator on systems with very sparse
NUMA layouts.
- STRICT_KERNEL_RWX support on PPC32.
- A new sched domain topology for Power9, to capture the fact that pairs of
cores may share an L2 cache.
- Power9 support for VAS, which is a new mechanism for accessing coprocessors,
and initial support for using it with the NX compression accelerator.
- Major work on the instruction emulation support, adding support for many new
instructions, and reworking it so it can be used to implement the emulation
needed to fixup alignment faults.
- Support for guests under PowerVM to use the Power9 XIVE interrupt controller.
And probably that many things again that are almost as interesting, but I had to
keep the list short. Plus the usual fixes and cleanups as always.
Thanks to:
Alexey Kardashevskiy, Alistair Popple, Andreas Schwab, Aneesh Kumar K.V, Anju
T Sudhakar, Arvind Yadav, Balbir Singh, Benjamin Herrenschmidt, Bhumika Goyal,
Breno Leitao, Bryant G. Ly, Christophe Leroy, Cédric Le Goater, Dan Carpenter,
Dou Liyang, Frederic Barrat, Gautham R. Shenoy, Geliang Tang, Geoff Levand,
Hannes Reinecke, Haren Myneni, Ivan Mikhaylov, John Allen, Julia Lawall, LABBE
Corentin, Laurentiu Tudor, Madhavan Srinivasan, Markus Elfring, Masahiro
Yamada, Matt Brown, Michael Neuling, Murilo Opsfelder Araujo, Nathan Fontenot,
Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Paul Mackerras, Rashmica
Gupta, Rob Herring, Rui Teng, Sam Bobroff, Santosh Sivaraj, Scott Wood,
Shilpasri G Bhat, Sukadev Bhattiprolu, Suraj Jitindar Singh, Tobin C. Harding,
Victor Aoqui.
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Merge tag 'powerpc-4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Nothing really major this release, despite quite a lot of activity.
Just lots of things all over the place.
Some things of note include:
- Access via perf to a new type of PMU (IMC) on Power9, which can
count both core events as well as nest unit events (Memory
controller etc).
- Optimisations to the radix MMU TLB flushing, mostly to avoid
unnecessary Page Walk Cache (PWC) flushes when the structure of the
tree is not changing.
- Reworks/cleanups of do_page_fault() to modernise it and bring it
closer to other architectures where possible.
- Rework of our page table walking so that THP updates only need to
send IPIs to CPUs where the affected mm has run, rather than all
CPUs.
- The size of our vmalloc area is increased to 56T on 64-bit hash MMU
systems. This avoids problems with the percpu allocator on systems
with very sparse NUMA layouts.
- STRICT_KERNEL_RWX support on PPC32.
- A new sched domain topology for Power9, to capture the fact that
pairs of cores may share an L2 cache.
- Power9 support for VAS, which is a new mechanism for accessing
coprocessors, and initial support for using it with the NX
compression accelerator.
- Major work on the instruction emulation support, adding support for
many new instructions, and reworking it so it can be used to
implement the emulation needed to fixup alignment faults.
- Support for guests under PowerVM to use the Power9 XIVE interrupt
controller.
And probably that many things again that are almost as interesting,
but I had to keep the list short. Plus the usual fixes and cleanups as
always.
Thanks to: Alexey Kardashevskiy, Alistair Popple, Andreas Schwab,
Aneesh Kumar K.V, Anju T Sudhakar, Arvind Yadav, Balbir Singh,
Benjamin Herrenschmidt, Bhumika Goyal, Breno Leitao, Bryant G. Ly,
Christophe Leroy, Cédric Le Goater, Dan Carpenter, Dou Liyang,
Frederic Barrat, Gautham R. Shenoy, Geliang Tang, Geoff Levand, Hannes
Reinecke, Haren Myneni, Ivan Mikhaylov, John Allen, Julia Lawall,
LABBE Corentin, Laurentiu Tudor, Madhavan Srinivasan, Markus Elfring,
Masahiro Yamada, Matt Brown, Michael Neuling, Murilo Opsfelder Araujo,
Nathan Fontenot, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran,
Paul Mackerras, Rashmica Gupta, Rob Herring, Rui Teng, Sam Bobroff,
Santosh Sivaraj, Scott Wood, Shilpasri G Bhat, Sukadev Bhattiprolu,
Suraj Jitindar Singh, Tobin C. Harding, Victor Aoqui"
* tag 'powerpc-4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (321 commits)
powerpc/xive: Fix section __init warning
powerpc: Fix kernel crash in emulation of vector loads and stores
powerpc/xive: improve debugging macros
powerpc/xive: add XIVE Exploitation Mode to CAS
powerpc/xive: introduce H_INT_ESB hcall
powerpc/xive: add the HW IRQ number under xive_irq_data
powerpc/xive: introduce xive_esb_write()
powerpc/xive: rename xive_poke_esb() in xive_esb_read()
powerpc/xive: guest exploitation of the XIVE interrupt controller
powerpc/xive: introduce a common routine xive_queue_page_alloc()
powerpc/sstep: Avoid used uninitialized error
axonram: Return directly after a failed kzalloc() in axon_ram_probe()
axonram: Improve a size determination in axon_ram_probe()
axonram: Delete an error message for a failed memory allocation in axon_ram_probe()
powerpc/powernv/npu: Move tlb flush before launching ATSD
powerpc/macintosh: constify wf_sensor_ops structures
powerpc/iommu: Use permission-specific DEVICE_ATTR variants
powerpc/eeh: Delete an error out of memory message at init time
powerpc/mm: Use seq_putc() in two functions
macintosh: Convert to using %pOF instead of full_name
...
Two minor cleanups and improvements, a fix for decoding external abort
types from guests, and added support for migrating the active priority
of interrupts when running a GICv2 guest on a GICv3 host.
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Merge tag 'kvm-arm-for-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm
KVM/ARM Changes for v4.14
Two minor cleanups and improvements, a fix for decoding external abort
types from guests, and added support for migrating the active priority
of interrupts when running a GICv2 guest on a GICv3 host.
- merge of topic branch tlb-flushing from the s390 tree to get the
no-dat base features
- merge of kvm/master to avoid conflicts with additional sthyi fixes
- wire up the no-dat enhancements in KVM
- multiple epoch facility (z14 feature)
- Configuration z/Architecture Mode
- more sthyi fixes
- gdb server range checking fix
- small code cleanups
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Merge tag 'kvm-s390-next-4.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux
KVM: s390: Fixes and features for 4.14
- merge of topic branch tlb-flushing from the s390 tree to get the
no-dat base features
- merge of kvm/master to avoid conflicts with additional sthyi fixes
- wire up the no-dat enhancements in KVM
- multiple epoch facility (z14 feature)
- Configuration z/Architecture Mode
- more sthyi fixes
- gdb server range checking fix
- small code cleanups
Pull libata updates from Tejun Heo:
"Except for the ahci fix that fixes a boot issue, nothing major in this
pull request. Some new platform controller support and device specific
changes"
* 'for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
libata: zpodd: make arrays cdb static, reduces object code size
ahci: don't use MSI for devices with the silly Intel NVMe remapping scheme
dt-bindings: ata: add DT bindings for MediaTek SATA controller
ata: mediatek: add support for MediaTek SATA controller
pata_octeon_cf: use of_property_read_{bool|u32}()
cs5536: add support for IDE controller variant
ata: sata_gemini: Introduce explicit IDE pin control
ata: sata_gemini: Retire custom pin control
ata: ahci_platform: Add shutdown handler
ata: sata_gemini: explicitly request exclusive reset control
ata: Drop unnecessary static
ata: Convert to using %pOF instead of full_name
Pull cgroup updates from Tejun Heo:
"Several notable changes this cycle:
- Thread mode was merged. This will be used for cgroup2 support for
CPU and possibly other controllers. Unfortunately, CPU controller
cgroup2 support didn't make this pull request but most contentions
have been resolved and the support is likely to be merged before
the next merge window.
- cgroup.stat now shows the number of descendant cgroups.
- cpuset now can enable the easier-to-configure v2 behavior on v1
hierarchy"
* 'for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (21 commits)
cpuset: Allow v2 behavior in v1 cgroup
cgroup: Add mount flag to enable cpuset to use v2 behavior in v1 cgroup
cgroup: remove unneeded checks
cgroup: misc changes
cgroup: short-circuit cset_cgroup_from_root() on the default hierarchy
cgroup: re-use the parent pointer in cgroup_destroy_locked()
cgroup: add cgroup.stat interface with basic hierarchy stats
cgroup: implement hierarchy limits
cgroup: keep track of number of descent cgroups
cgroup: add comment to cgroup_enable_threaded()
cgroup: remove unnecessary empty check when enabling threaded mode
cgroup: update debug controller to print out thread mode information
cgroup: implement cgroup v2 thread support
cgroup: implement CSS_TASK_ITER_THREADED
cgroup: introduce cgroup->dom_cgrp and threaded css_set handling
cgroup: add @flags to css_task_iter_start() and implement CSS_TASK_ITER_PROCS
cgroup: reorganize cgroup.procs / task write path
cgroup: replace css_set walking populated test with testing cgrp->nr_populated_csets
cgroup: distinguish local and children populated states
cgroup: remove now unused list_head @pending in cgroup_apply_cftypes()
...
Pull workqueue updates from Tejun Heo:
"Nothing major. I introduced a flag collsion bug during v4.13 cycle
which is fixed in this pull request. Fortunately, the flag is for
debugging / verification and the bug isn't critical"
* 'for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: Fix flag collision
workqueue: Use TASK_IDLE
workqueue: fix path to documentation
workqueue: doc change for ST behavior on NUMA systems
The generic PHY 'phys' property sometime appears in the same node with
the Ethernet PHY 'phy' or 'phy-handle' properties. Add a warning in
phy-bindings.txt to reduce confusion.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
Merge updates from Andrew Morton:
- various misc bits
- DAX updates
- OCFS2
- most of MM
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (119 commits)
mm,fork: introduce MADV_WIPEONFORK
x86,mpx: make mpx depend on x86-64 to free up VMA flag
mm: add /proc/pid/smaps_rollup
mm: hugetlb: clear target sub-page last when clearing huge page
mm: oom: let oom_reap_task and exit_mmap run concurrently
swap: choose swap device according to numa node
mm: replace TIF_MEMDIE checks by tsk_is_oom_victim
mm, oom: do not rely on TIF_MEMDIE for memory reserves access
z3fold: use per-cpu unbuddied lists
mm, swap: don't use VMA based swap readahead if HDD is used as swap
mm, swap: add sysfs interface for VMA based swap readahead
mm, swap: VMA based swap readahead
mm, swap: fix swap readahead marking
mm, swap: add swap readahead hit statistics
mm/vmalloc.c: don't reinvent the wheel but use existing llist API
mm/vmstat.c: fix wrong comment
selftests/memfd: add memfd_create hugetlbfs selftest
mm/shmem: add hugetlbfs support to memfd_create()
mm, devm_memremap_pages: use multi-order radix for ZONE_DEVICE lookups
mm/vmalloc.c: halve the number of comparisons performed in pcpu_get_vm_areas()
...
/proc/pid/smaps_rollup is a new proc file that improves the performance
of user programs that determine aggregate memory statistics (e.g., total
PSS) of a process.
Android regularly "samples" the memory usage of various processes in
order to balance its memory pool sizes. This sampling process involves
opening /proc/pid/smaps and summing certain fields. For very large
processes, sampling memory use this way can take several hundred
milliseconds, due mostly to the overhead of the seq_printf calls in
task_mmu.c.
smaps_rollup improves the situation. It contains most of the fields of
/proc/pid/smaps, but instead of a set of fields for each VMA,
smaps_rollup instead contains one synthetic smaps-format entry
representing the whole process. In the single smaps_rollup synthetic
entry, each field is the summation of the corresponding field in all of
the real-smaps VMAs. Using a common format for smaps_rollup and smaps
allows userspace parsers to repurpose parsers meant for use with
non-rollup smaps for smaps_rollup, and it allows userspace to switch
between smaps_rollup and smaps at runtime (say, based on the
availability of smaps_rollup in a given kernel) with minimal fuss.
By using smaps_rollup instead of smaps, a caller can avoid the
significant overhead of formatting, reading, and parsing each of a large
process's potentially very numerous memory mappings. For sampling
system_server's PSS in Android, we measured a 12x speedup, representing
a savings of several hundred milliseconds.
One alternative to a new per-process proc file would have been including
PSS information in /proc/pid/status. We considered this option but
thought that PSS would be too expensive (by a few orders of magnitude)
to collect relative to what's already emitted as part of
/proc/pid/status, and slowing every user of /proc/pid/status for the
sake of readers that happen to want PSS feels wrong.
The code itself works by reusing the existing VMA-walking framework we
use for regular smaps generation and keeping the mem_size_stats
structure around between VMA walks instead of using a fresh one for each
VMA. In this way, summation happens automatically. We let seq_file
walk over the VMAs just as it does for regular smaps and just emit
nothing to the seq_file until we hit the last VMA.
Benchmarks:
using smaps:
iterations:1000 pid:1163 pss:220023808
0m29.46s real 0m08.28s user 0m20.98s system
using smaps_rollup:
iterations:1000 pid:1163 pss:220702720
0m04.39s real 0m00.03s user 0m04.31s system
We're using the PSS samples we collect asynchronously for
system-management tasks like fine-tuning oom_adj_score, memory use
tracking for debugging, application-level memory-use attribution, and
deciding whether we want to kill large processes during system idle
maintenance windows. Android has been using PSS for these purposes for
a long time; as the average process VMA count has increased and and
devices become more efficiency-conscious, PSS-collection inefficiency
has started to matter more. IMHO, it'd be a lot safer to optimize the
existing PSS-collection model, which has been fine-tuned over the years,
instead of changing the memory tracking approach entirely to work around
smaps-generation inefficiency.
Tim said:
: There are two main reasons why Android gathers PSS information:
:
: 1. Android devices can show the user the amount of memory used per
: application via the settings app. This is a less important use case.
:
: 2. We log PSS to help identify leaks in applications. We have found
: an enormous number of bugs (in the Android platform, in Google's own
: apps, and in third-party applications) using this data.
:
: To do this, system_server (the main process in Android userspace) will
: sample the PSS of a process three seconds after it changes state (for
: example, app is launched and becomes the foreground application) and about
: every ten minutes after that. The net result is that PSS collection is
: regularly running on at least one process in the system (usually a few
: times a minute while the screen is on, less when screen is off due to
: suspend). PSS of a process is an incredibly useful stat to track, and we
: aren't going to get rid of it. We've looked at some very hacky approaches
: using RSS ("take the RSS of the target process, subtract the RSS of the
: zygote process that is the parent of all Android apps") to reduce the
: accounting time, but it regularly overestimated the memory used by 20+
: percent. Accordingly, I don't think that there's a good alternative to
: using PSS.
:
: We started looking into PSS collection performance after we noticed random
: frequency spikes while a phone's screen was off; occasionally, one of the
: CPU clusters would ramp to a high frequency because there was 200-300ms of
: constant CPU work from a single thread in the main Android userspace
: process. The work causing the spike (which is reasonable governor
: behavior given the amount of CPU time needed) was always PSS collection.
: As a result, Android is burning more power than we should be on PSS
: collection.
:
: The other issue (and why I'm less sure about improving smaps as a
: long-term solution) is that the number of VMAs per process has increased
: significantly from release to release. After trying to figure out why we
: were seeing these 200-300ms PSS collection times on Android O but had not
: noticed it in previous versions, we found that the number of VMAs in the
: main system process increased by 50% from Android N to Android O (from
: ~1800 to ~2700) and varying increases in every userspace process. Android
: M to N also had an increase in the number of VMAs, although not as much.
: I'm not sure why this is increasing so much over time, but thinking about
: ASLR and ways to make ASLR better, I expect that this will continue to
: increase going forward. I would not be surprised if we hit 5000 VMAs on
: the main Android process (system_server) by 2020.
:
: If we assume that the number of VMAs is going to increase over time, then
: doing anything we can do to reduce the overhead of each VMA during PSS
: collection seems like the right way to go, and that means outputting an
: aggregate statistic (to avoid whatever overhead there is per line in
: writing smaps and in reading each line from userspace).
Link: http://lkml.kernel.org/r/20170812022148.178293-1-dancol@google.com
Signed-off-by: Daniel Colascione <dancol@google.com>
Cc: Tim Murray <timmurray@google.com>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Sonny Rao <sonnyrao@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If the system has more than one swap device and swap device has the node
information, we can make use of this information to decide which swap
device to use in get_swap_pages() to get better performance.
The current code uses a priority based list, swap_avail_list, to decide
which swap device to use and if multiple swap devices share the same
priority, they are used round robin. This patch changes the previous
single global swap_avail_list into a per-numa-node list, i.e. for each
numa node, it sees its own priority based list of available swap
devices. Swap device's priority can be promoted on its matching node's
swap_avail_list.
The current swap device's priority is set as: user can set a >=0 value,
or the system will pick one starting from -1 then downwards. The
priority value in the swap_avail_list is the negated value of the swap
device's due to plist being sorted from low to high. The new policy
doesn't change the semantics for priority >=0 cases, the previous
starting from -1 then downwards now becomes starting from -2 then
downwards and -1 is reserved as the promoted value.
Take 4-node EX machine as an example, suppose 4 swap devices are
available, each sit on a different node:
swapA on node 0
swapB on node 1
swapC on node 2
swapD on node 3
After they are all swapped on in the sequence of ABCD.
Current behaviour:
their priorities will be:
swapA: -1
swapB: -2
swapC: -3
swapD: -4
And their position in the global swap_avail_list will be:
swapA -> swapB -> swapC -> swapD
prio:1 prio:2 prio:3 prio:4
New behaviour:
their priorities will be(note that -1 is skipped):
swapA: -2
swapB: -3
swapC: -4
swapD: -5
And their positions in the 4 swap_avail_lists[nid] will be:
swap_avail_lists[0]: /* node 0's available swap device list */
swapA -> swapB -> swapC -> swapD
prio:1 prio:3 prio:4 prio:5
swap_avali_lists[1]: /* node 1's available swap device list */
swapB -> swapA -> swapC -> swapD
prio:1 prio:2 prio:4 prio:5
swap_avail_lists[2]: /* node 2's available swap device list */
swapC -> swapA -> swapB -> swapD
prio:1 prio:2 prio:3 prio:5
swap_avail_lists[3]: /* node 3's available swap device list */
swapD -> swapA -> swapB -> swapC
prio:1 prio:2 prio:3 prio:4
To see the effect of the patch, a test that starts N process, each mmap
a region of anonymous memory and then continually write to it at random
position to trigger both swap in and out is used.
On a 2 node Skylake EP machine with 64GiB memory, two 170GB SSD drives
are used as swap devices with each attached to a different node, the
result is:
runtime=30m/processes=32/total test size=128G/each process mmap region=4G
kernel throughput
vanilla 13306
auto-binding 15169 +14%
runtime=30m/processes=64/total test size=128G/each process mmap region=2G
kernel throughput
vanilla 11885
auto-binding 14879 +25%
[aaron.lu@intel.com: v2]
Link: http://lkml.kernel.org/r/20170814053130.GD2369@aaronlu.sh.intel.com
Link: http://lkml.kernel.org/r/20170816024439.GA10925@aaronlu.sh.intel.com
[akpm@linux-foundation.org: use kmalloc_array()]
Link: http://lkml.kernel.org/r/20170814053130.GD2369@aaronlu.sh.intel.com
Link: http://lkml.kernel.org/r/20170816024439.GA10925@aaronlu.sh.intel.com
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Cc: "Chen, Tim C" <tim.c.chen@intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The sysfs interface to control the VMA based swap readahead is added as
follow,
/sys/kernel/mm/swap/vma_ra_enabled
Enable the VMA based swap readahead algorithm, or use the original
global swap readahead algorithm.
/sys/kernel/mm/swap/vma_ra_max_order
Set the max order of the readahead window size for the VMA based swap
readahead algorithm.
The corresponding ABI documentation is added too.
Link: http://lkml.kernel.org/r/20170807054038.1843-5-ying.huang@intel.com
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Shaohua Li <shli@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Tim Chen <tim.c.chen@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Patch series "Ranged pagevec lookup", v2.
In this series I make pagevec_lookup() update the index (to be
consistent with pagevec_lookup_tag() and also as a preparation for
ranged lookups), provide ranged variant of pagevec_lookup() and use it
in places where it makes sense. This not only removes some common code
but is also a measurable performance win for some use cases (see patch
4/10) where radix tree is sparse and searching & grabing of a page after
the end of the range has measurable overhead.
This patch (of 10):
The callback doesn't ever get called. Remove it.
Link: http://lkml.kernel.org/r/20170726114704.7626-2-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Patch series "cleanup zonelists initialization", v1.
This is aimed at cleaning up the zonelists initialization code we have
but the primary motivation was bug report [2] which got resolved but the
usage of stop_machine is just too ugly to live. Most patches are
straightforward but 3 of them need a special consideration.
Patch 1 removes zone ordered zonelists completely. I am CCing linux-api
because this is a user visible change. As I argue in the patch
description I do not think we have a strong usecase for it these days.
I have kept sysctl in place and warn into the log if somebody tries to
configure zone lists ordering. If somebody has a real usecase for it we
can revert this patch but I do not expect anybody will actually notice
runtime differences. This patch is not strictly needed for the rest but
it made patch 6 easier to implement.
Patch 7 removes stop_machine from build_all_zonelists without adding any
special synchronization between iterators and updater which I _believe_
is acceptable as explained in the changelog. I hope I am not missing
anything.
Patch 8 then removes zonelists_mutex which is kind of ugly as well and
not really needed AFAICS but a care should be taken when double checking
my thinking.
This patch (of 9):
Supporting zone ordered zonelists costs us just a lot of code while the
usefulness is arguable if existent at all. Mel has already made node
ordering default on 64b systems. 32b systems are still using
ZONELIST_ORDER_ZONE because it is considered better to fallback to a
different NUMA node rather than consume precious lowmem zones.
This argument is, however, weaken by the fact that the memory reclaim
has been reworked to be node rather than zone oriented. This means that
lowmem requests have to skip over all highmem pages on LRUs already and
so zone ordering doesn't save the reclaim time much. So the only
advantage of the zone ordering is under a light memory pressure when
highmem requests do not ever hit into lowmem zones and the lowmem
pressure doesn't need to reclaim.
Considering that 32b NUMA systems are rather suboptimal already and it
is generally advisable to use 64b kernel on such a HW I believe we
should rather care about the code maintainability and just get rid of
ZONELIST_ORDER_ZONE altogether. Keep systcl in place and warn if
somebody tries to set zone ordering either from kernel command line or
the sysctl.
[mhocko@suse.com: reading vm.numa_zonelist_order will never terminate]
Link: http://lkml.kernel.org/r/20170721143915.14161-2-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: Shaohua Li <shaohua.li@intel.com>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Cc: <linux-api@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch adds document and kconfig for using of writeback feature.
Link: http://lkml.kernel.org/r/1498459987-24562-10-git-send-email-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Cc: Juneho Choi <juno.choi@lge.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When servicing mmap() reads from file holes the current DAX code
allocates a page cache page of all zeroes and places the struct page
pointer in the mapping->page_tree radix tree.
This has three major drawbacks:
1) It consumes memory unnecessarily. For every 4k page that is read via
a DAX mmap() over a hole, we allocate a new page cache page. This
means that if you read 1GiB worth of pages, you end up using 1GiB of
zeroed memory. This is easily visible by looking at the overall
memory consumption of the system or by looking at /proc/[pid]/smaps:
7f62e72b3000-7f63272b3000 rw-s 00000000 103:00 12 /root/dax/data
Size: 1048576 kB
Rss: 1048576 kB
Pss: 1048576 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 1048576 kB
Private_Dirty: 0 kB
Referenced: 1048576 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Locked: 0 kB
2) It is slower than using a common zero page because each page fault
has more work to do. Instead of just inserting a common zero page we
have to allocate a page cache page, zero it, and then insert it. Here
are the average latencies of dax_load_hole() as measured by ftrace on
a random test box:
Old method, using zeroed page cache pages: 3.4 us
New method, using the common 4k zero page: 0.8 us
This was the average latency over 1 GiB of sequential reads done by
this simple fio script:
[global]
size=1G
filename=/root/dax/data
fallocate=none
[io]
rw=read
ioengine=mmap
3) The fact that we had to check for both DAX exceptional entries and
for page cache pages in the radix tree made the DAX code more
complex.
Solve these issues by following the lead of the DAX PMD code and using a
common 4k zero page instead. As with the PMD code we will now insert a
DAX exceptional entry into the radix tree instead of a struct page
pointer which allows us to remove all the special casing in the DAX
code.
Note that we do still pretty aggressively check for regular pages in the
DAX radix tree, especially where we take action based on the bits set in
the page. If we ever find a regular page in our radix tree now that
most likely means that someone besides DAX is inserting pages (which has
happened lots of times in the past), and we want to find that out early
and fail loudly.
This solution also removes the extra memory consumption. Here is that
same /proc/[pid]/smaps after 1GiB of reading from a hole with the new
code:
7f2054a74000-7f2094a74000 rw-s 00000000 103:00 12 /root/dax/data
Size: 1048576 kB
Rss: 0 kB
Pss: 0 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 0 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Locked: 0 kB
Overall system memory consumption is similarly improved.
Another major change is that we remove dax_pfn_mkwrite() from our fault
flow, and instead rely on the page fault itself to make the PTE dirty
and writeable. The following description from the patch adding the
vm_insert_mixed_mkwrite() call explains this a little more:
"To be able to use the common 4k zero page in DAX we need to have our
PTE fault path look more like our PMD fault path where a PTE entry
can be marked as dirty and writeable as it is first inserted rather
than waiting for a follow-up dax_pfn_mkwrite() =>
finish_mkwrite_fault() call.
Right now we can rely on having a dax_pfn_mkwrite() call because we
can distinguish between these two cases in do_wp_page():
case 1: 4k zero page => writable DAX storage
case 2: read-only DAX storage => writeable DAX storage
This distinction is made by via vm_normal_page(). vm_normal_page()
returns false for the common 4k zero page, though, just as it does
for DAX ptes. Instead of special casing the DAX + 4k zero page case
we will simplify our DAX PTE page fault sequence so that it matches
our DAX PMD sequence, and get rid of the dax_pfn_mkwrite() helper.
We will instead use dax_iomap_fault() to handle write-protection
faults.
This means that insert_pfn() needs to follow the lead of
insert_pfn_pmd() and allow us to pass in a 'mkwrite' flag. If
'mkwrite' is set insert_pfn() will do the work that was previously
done by wp_page_reuse() as part of the dax_pfn_mkwrite() call path"
Link: http://lkml.kernel.org/r/20170724170616.25810-4-ross.zwisler@linux.intel.com
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull networking updates from David Miller:
1) Support ipv6 checksum offload in sunvnet driver, from Shannon
Nelson.
2) Move to RB-tree instead of custom AVL code in inetpeer, from Eric
Dumazet.
3) Allow generic XDP to work on virtual devices, from John Fastabend.
4) Add bpf device maps and XDP_REDIRECT, which can be used to build
arbitrary switching frameworks using XDP. From John Fastabend.
5) Remove UFO offloads from the tree, gave us little other than bugs.
6) Remove the IPSEC flow cache, from Florian Westphal.
7) Support ipv6 route offload in mlxsw driver.
8) Support VF representors in bnxt_en, from Sathya Perla.
9) Add support for forward error correction modes to ethtool, from
Vidya Sagar Ravipati.
10) Add time filter for packet scheduler action dumping, from Jamal Hadi
Salim.
11) Extend the zerocopy sendmsg() used by virtio and tap to regular
sockets via MSG_ZEROCOPY. From Willem de Bruijn.
12) Significantly rework value tracking in the BPF verifier, from Edward
Cree.
13) Add new jump instructions to eBPF, from Daniel Borkmann.
14) Rework rtnetlink plumbing so that operations can be run without
taking the RTNL semaphore. From Florian Westphal.
15) Support XDP in tap driver, from Jason Wang.
16) Add 32-bit eBPF JIT for ARM, from Shubham Bansal.
17) Add Huawei hinic ethernet driver.
18) Allow to report MD5 keys in TCP inet_diag dumps, from Ivan
Delalande.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1780 commits)
i40e: point wb_desc at the nvm_wb_desc during i40e_read_nvm_aq
i40e: avoid NVM acquire deadlock during NVM update
drivers: net: xgene: Remove return statement from void function
drivers: net: xgene: Configure tx/rx delay for ACPI
drivers: net: xgene: Read tx/rx delay for ACPI
rocker: fix kcalloc parameter order
rds: Fix non-atomic operation on shared flag variable
net: sched: don't use GFP_KERNEL under spin lock
vhost_net: correctly check tx avail during rx busy polling
net: mdio-mux: add mdio_mux parameter to mdio_mux_init()
rxrpc: Make service connection lookup always check for retry
net: stmmac: Delete dead code for MDIO registration
gianfar: Fix Tx flow control deactivation
cxgb4: Ignore MPS_TX_INT_CAUSE[Bubble] for T6
cxgb4: Fix pause frame count in t4_get_port_stats
cxgb4: fix memory leak
tun: rename generic_xdp to skb_xdp
tun: reserve extra headroom only when XDP is set
net: dsa: bcm_sf2: Configure IMP port TC2QOS mapping
net: dsa: bcm_sf2: Advertise number of egress queues
...
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Merge tag 'wberr-v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux
Pull writeback error handling updates from Jeff Layton:
"This pile continues the work from last cycle on better tracking
writeback errors. In v4.13 we added some basic errseq_t infrastructure
and converted a few filesystems to use it.
This set continues refining that infrastructure, adds documentation,
and converts most of the other filesystems to use it. The main
exception at this point is the NFS client"
* tag 'wberr-v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
ecryptfs: convert to file_write_and_wait in ->fsync
mm: remove optimizations based on i_size in mapping writeback waits
fs: convert a pile of fsync routines to errseq_t based reporting
gfs2: convert to errseq_t based writeback error reporting for fsync
fs: convert sync_file_range to use errseq_t based error-tracking
mm: add file_fdatawait_range and file_write_and_wait
fuse: convert to errseq_t based error tracking for fsync
mm: consolidate dax / non-dax checks for writeback
Documentation: add some docs for errseq_t
errseq: rename __errseq_set to errseq_set
- Drop the P-state selection algorithm based on a PID controller
from intel_pstate and make it use the same P-state selection
method (based on the CPU load) for all types of systems in the
active mode (Rafael Wysocki, Srinivas Pandruvada).
- Rework the cpufreq core and governors to make it possible to
take cross-CPU utilization updates into account and modify the
schedutil governor to actually do so (Viresh Kumar).
- Clean up the handling of transition latency information in the
cpufreq core and untangle it from the information on which drivers
cannot do dynamic frequency switching (Viresh Kumar).
- Add support for new SoCs (MT2701/MT7623 and MT7622) to the
mediatek cpufreq driver and update its DT bindings (Sean Wang).
- Modify the cpufreq dt-platdev driver to autimatically create
cpufreq devices for the new (v2) Operating Performance Points
(OPP) DT bindings and update its whitelist of supported systems
(Viresh Kumar, Shubhrajyoti Datta, Marc Gonzalez, Khiem Nguyen,
Finley Xiao).
- Add support for Ux500 to the cpufreq-dt driver and drop the
obsolete dbx500 cpufreq driver (Linus Walleij, Arnd Bergmann).
- Add new SoC (R8A7795) support to the cpufreq rcar driver (Khiem
Nguyen).
- Fix and clean up assorted issues in the cpufreq drivers and core
(Arvind Yadav, Christophe Jaillet, Colin Ian King, Gustavo Silva,
Julia Lawall, Leonard Crestez, Rob Herring, Sudeep Holla).
- Update the IO-wait boost handling in the schedutil governor to
make it less aggressive (Joel Fernandes).
- Rework system suspend diagnostics to make it print fewer messages
to the kernel log by default, add a sysfs knob to allow more
suspend-related messages to be printed and add Low Power S0 Idle
constraints checks to the ACPI suspend-to-idle code (Rafael
Wysocki, Srinivas Pandruvada).
- Prefer suspend-to-idle over S3 on ACPI-based systems with the
ACPI_FADT_LOW_POWER_S0 flag set and the Low Power Idle S0 _DSM
interface present in the ACPI tables (Rafael Wysocki).
- Update documentation related to system sleep and rename a number
of items in the code to make it cleare that they are related to
suspend-to-idle (Rafael Wysocki).
- Export a variable allowing device drivers to check the target
system sleep state from the core system suspend code (Florian
Fainelli).
- Clean up the cpuidle subsystem to handle the polling state on
x86 in a more straightforward way and to use %pOF instead of
full_name (Rafael Wysocki, Rob Herring).
- Update the devfreq framework to fix and clean up a few minor
issues (Chanwoo Choi, Rob Herring).
- Extend diagnostics in the generic power domains (genpd) framework
and clean it up slightly (Thara Gopinath, Rob Herring).
- Fix and clean up a couple of issues in the operating performance
points (OPP) framework (Viresh Kumar, Waldemar Rymarkiewicz).
- Add support for RV1108 to the rockchip-io Adaptive Voltage Scaling
(AVS) driver (David Wu).
- Fix the usage of notifiers in CPU power management on some
platforms (Alex Shi).
- Update the pm-graph system suspend/hibernation and boot profiling
utility (Todd Brandt).
- Make it possible to run the cpupower utility without CPU0 (Prarit
Bhargava).
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Merge tag 'pm-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"This time (again) cpufreq gets the majority of changes which mostly
are driver updates (including a major consolidation of intel_pstate),
some schedutil governor modifications and core cleanups.
There also are some changes in the system suspend area, mostly related
to diagnostics and debug messages plus some renames of things related
to suspend-to-idle. One major change here is that suspend-to-idle is
now going to be preferred over S3 on systems where the ACPI tables
indicate to do so and provide requsite support (the Low Power Idle S0
_DSM in particular). The system sleep documentation and the tools
related to it are updated too.
The rest is a few cpuidle changes (nothing major), devfreq updates,
generic power domains (genpd) framework updates and a few assorted
modifications elsewhere.
Specifics:
- Drop the P-state selection algorithm based on a PID controller from
intel_pstate and make it use the same P-state selection method
(based on the CPU load) for all types of systems in the active mode
(Rafael Wysocki, Srinivas Pandruvada).
- Rework the cpufreq core and governors to make it possible to take
cross-CPU utilization updates into account and modify the schedutil
governor to actually do so (Viresh Kumar).
- Clean up the handling of transition latency information in the
cpufreq core and untangle it from the information on which drivers
cannot do dynamic frequency switching (Viresh Kumar).
- Add support for new SoCs (MT2701/MT7623 and MT7622) to the mediatek
cpufreq driver and update its DT bindings (Sean Wang).
- Modify the cpufreq dt-platdev driver to autimatically create
cpufreq devices for the new (v2) Operating Performance Points (OPP)
DT bindings and update its whitelist of supported systems (Viresh
Kumar, Shubhrajyoti Datta, Marc Gonzalez, Khiem Nguyen, Finley
Xiao).
- Add support for Ux500 to the cpufreq-dt driver and drop the
obsolete dbx500 cpufreq driver (Linus Walleij, Arnd Bergmann).
- Add new SoC (R8A7795) support to the cpufreq rcar driver (Khiem
Nguyen).
- Fix and clean up assorted issues in the cpufreq drivers and core
(Arvind Yadav, Christophe Jaillet, Colin Ian King, Gustavo Silva,
Julia Lawall, Leonard Crestez, Rob Herring, Sudeep Holla).
- Update the IO-wait boost handling in the schedutil governor to make
it less aggressive (Joel Fernandes).
- Rework system suspend diagnostics to make it print fewer messages
to the kernel log by default, add a sysfs knob to allow more
suspend-related messages to be printed and add Low Power S0 Idle
constraints checks to the ACPI suspend-to-idle code (Rafael
Wysocki, Srinivas Pandruvada).
- Prefer suspend-to-idle over S3 on ACPI-based systems with the
ACPI_FADT_LOW_POWER_S0 flag set and the Low Power Idle S0 _DSM
interface present in the ACPI tables (Rafael Wysocki).
- Update documentation related to system sleep and rename a number of
items in the code to make it cleare that they are related to
suspend-to-idle (Rafael Wysocki).
- Export a variable allowing device drivers to check the target
system sleep state from the core system suspend code (Florian
Fainelli).
- Clean up the cpuidle subsystem to handle the polling state on x86
in a more straightforward way and to use %pOF instead of full_name
(Rafael Wysocki, Rob Herring).
- Update the devfreq framework to fix and clean up a few minor issues
(Chanwoo Choi, Rob Herring).
- Extend diagnostics in the generic power domains (genpd) framework
and clean it up slightly (Thara Gopinath, Rob Herring).
- Fix and clean up a couple of issues in the operating performance
points (OPP) framework (Viresh Kumar, Waldemar Rymarkiewicz).
- Add support for RV1108 to the rockchip-io Adaptive Voltage Scaling
(AVS) driver (David Wu).
- Fix the usage of notifiers in CPU power management on some
platforms (Alex Shi).
- Update the pm-graph system suspend/hibernation and boot profiling
utility (Todd Brandt).
- Make it possible to run the cpupower utility without CPU0 (Prarit
Bhargava)"
* tag 'pm-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (87 commits)
cpuidle: Make drivers initialize polling state
cpuidle: Move polling state initialization code to separate file
cpuidle: Eliminate the CPUIDLE_DRIVER_STATE_START symbol
cpufreq: imx6q: Fix imx6sx low frequency support
cpufreq: speedstep-lib: make several arrays static, makes code smaller
PM: docs: Delete the obsolete states.txt document
PM: docs: Describe high-level PM strategies and sleep states
PM / devfreq: Fix memory leak when fail to register device
PM / devfreq: Add dependency on PM_OPP
PM / devfreq: Move private devfreq_update_stats() into devfreq
PM / devfreq: Convert to using %pOF instead of full_name
PM / AVS: rockchip-io: add io selectors and supplies for RV1108
cpufreq: ti: Fix 'of_node_put' being called twice in error handling path
cpufreq: dt-platdev: Drop few entries from whitelist
cpufreq: dt-platdev: Automatically create cpufreq device with OPP v2
ARM: ux500: don't select CPUFREQ_DT
cpuidle: Convert to using %pOF instead of full_name
cpufreq: Convert to using %pOF instead of full_name
PM / Domains: Convert to using %pOF instead of full_name
cpufreq: Cap the default transition delay value to 10 ms
...
Core changes
- Allow the GPIO irqchip to allocate IRQs dynamically. This is
an important change on systems where only a restricted number
of IRQs, lesser than the number of GPIO lines, can be utilized.
Now we can allocate these on a first-come-first-served basis
instead of hogging up valuable IRQ lines.
- Serious fix-up of the kerneldoc documentation and inclusion
into the kerneldoc builds.
- Pulled in the IRQ simulator from the IRQ core tree and use
this in the GPIO mockup driver for exhaustive testing of
interrupt abilities.
New drivers
- New driver for ThunderX and OCTEON-TX. This is especially
interesting as it picks up improvements from the IRQ core that
allow us to handle fasteoi ACKs upwards in a hierarchy when
there are IRQ flag latches on several levels in a hierarchy.
Very interesting work here.
- New subdriver for Renesas R-Car r8a7745 (RZ/G1E).
Misc
- Several fixes and improvements for Xilinx Zynq GPIO.
- Support an enablement GPIO for the 74x164 GPIO.
- Switch a bunch of chips to use devres to allocate irq
descriptors.
- A bunch of constification fixes.
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Merge tag 'gpio-v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"This is the bulk of the GPIO changes for the v4.14 cycle.
Not so much changes this time, phew. David Daney and Bartosz
Golaszewski did all the really interesting work in infrastructure
improvement across GPIO and IRQ core, hats off for them and to tglx
and Marc Z for general help with these patch sets.
Core changes:
- Allow the GPIO irqchip to allocate IRQs dynamically. This is an
important change on systems where only a restricted number of IRQs,
lesser than the number of GPIO lines, can be utilized. Now we can
allocate these on a first-come-first-served basis instead of
hogging up valuable IRQ lines.
- Serious fix-up of the kerneldoc documentation and inclusion into
the kerneldoc builds.
- Pulled in the IRQ simulator from the IRQ core tree and use this in
the GPIO mockup driver for exhaustive testing of interrupt
abilities.
New drivers:
- New driver for ThunderX and OCTEON-TX. This is especially
interesting as it picks up improvements from the IRQ core that
allow us to handle fasteoi ACKs upwards in a hierarchy when there
are IRQ flag latches on several levels in a hierarchy. Very
interesting work here.
- New subdriver for Renesas R-Car r8a7745 (RZ/G1E).
Misc:
- Several fixes and improvements for Xilinx Zynq GPIO.
- Support an enablement GPIO for the 74x164 GPIO.
- Switch a bunch of chips to use devres to allocate irq descriptors.
- A bunch of constification fixes"
* tag 'gpio-v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (63 commits)
gpio: mockup: remove unused variable gc
gpio: pl061: constify amba_id
Revert "gpiolib: request the gpio before querying its direction"
gpio: twl6040: remove unneeded forward declaration
gpio: zevio: make gpio_chip const
gpio: add gpio_add_lookup_tables() to add several tables at once
gpio: rcar: Add r8a7745 (RZ/G1E) support
gpio: brcmstb: check return value of gpiochip_irqchip_add()
MAINTAINERS: Add entry for THUNDERX GPIO Driver.
gpio: Add gpio driver support for ThunderX and OCTEON-TX
gpio: mockup: use irq_sim
gpio: mxs: use devres for irq generic chip
gpio: mxc: use devres for irq generic chip
gpio: pch: use devres for irq generic chip
gpio: ml-ioh: use devres for irq generic chip
gpio: sta2x11: use devres for irq generic chip
gpio: sta2x11: disallow unbinding the driver
gpio: mxs: disallow unbinding the driver
gpio: mxc: disallow unbinding the driver
gpio: aspeed: Remove reference to clock name in debounce warning message
...
Core changes:
- Decision to wrap the sleep mode of the Spreadtrum and in the future
others into a specially tagged state. The generic DT bindings and the
new Spreadtrum driver conforms to this. Others should be moved over
if possible.
New drivers:
- New driver for Spreadtrum SoCs especially the SC9860 SoC.
- New driver for Storlink/Cortina Gemini 3512 and 3516 SoCs.
New subdrivers:
- Intel Denverton subdriver.
- Intel Cannon Lake subdriver.
- Intel Lewisburg subdriver.
- Allwinner sunxi: R40 subdriver for A10.
- Socionext uniphier PXs3 subdriver.
- Rockchip RK3128 subdriver.
- Renesas SH-PFC R8A77995 subdriver.
Miscellaneous:
- Qualcomm APQ8064 can handle general purpose clock muxing.
- Mediatek MT7623 PCIe mux data fixed up.
- Intel GPIO IRQs are disabled during suspend.
- Several fixes and addtions to Renesas r8a7796.
- Qualcomm SPMI GPIO supports dtest route and LV/MV subtype.
- Input schmitt trigger support in Rockchip RV1108.
- Aspeed G4 and G5 USB host/device pin control control added.
- Qualcomm IPQ4019 has matured with a few missing pin groups and
control bits put in place.
- Lots of constification, this is the latest in cocinelle fixes.
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Merge tag 'pinctrl-v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"This is the big bulk of pin control changes for the v4.14 kernel.
There are just a few bigger changes (new drivers mostly) and then a
lot of small patches all over the place.
Core changes:
- Decision to wrap the sleep mode of the Spreadtrum and in the future
others into a specially tagged state. The generic DT bindings and
the new Spreadtrum driver conforms to this. Others should be moved
over if possible.
New drivers:
- Spreadtrum SoCs especially the SC9860 SoC.
- Storlink/Cortina Gemini 3512 and 3516 SoCs.
New subdrivers:
- Intel Denverton subdriver.
- Intel Cannon Lake subdriver.
- Intel Lewisburg subdriver.
- Allwinner sunxi: R40 subdriver for A10.
- Socionext uniphier PXs3 subdriver.
- Rockchip RK3128 subdriver.
- Renesas SH-PFC R8A77995 subdriver.
Miscellaneous:
- Qualcomm APQ8064 can handle general purpose clock muxing.
- Mediatek MT7623 PCIe mux data fixed up.
- Intel GPIO IRQs are disabled during suspend.
- Several fixes and addtions to Renesas r8a7796.
- Qualcomm SPMI GPIO supports dtest route and LV/MV subtype.
- Input schmitt trigger support in Rockchip RV1108.
- Aspeed G4 and G5 USB host/device pin control control added.
- Qualcomm IPQ4019 has matured with a few missing pin groups and
control bits put in place.
- Lots of constification, this is the latest in cocinelle fixes"
* tag 'pinctrl-v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (147 commits)
Revert "pinctrl: sunxi: Don't enforce bias disable (for now)"
pinctrl: uniphier: fix members of rmii group for Pro4
pinctrl: Delete an error message
pinctrl: core: Delete an error message
pinctrl: intel: Read back TX buffer state
pinctrl: rockchip: Add rv1108 recalculated iomux support
pinctrl: intel: Decrease indentation in intel_gpio_set()
pinctrl: rza1: Remove suffix from gpiochip label
pinctrl: qcom: spmi-gpio: Correct power_source range check
pinctrl: freescale: make mxs_regs const
pinctrl: aspeed: Rework strap register write logic for the AST2500
pinctrl: rza1: off by one in rza1_parse_gpiochip()
pinctrl: qcom: General Purpose clocks for apq8064
pinctrl: sprd: Add Spreadtrum pin control driver
dt-bindings: pinctrl: Add DT bindings for Spreadtrum SC9860
pinctrl: Add sleep related state to indicate sleep related configs
pinctrl: mediatek: update PCIe mux data for MT7623
pinctrl: intel: Add Intel Lewisburg GPIO support
pinctrl: intel: Add Intel Cannon Lake PCH-H pin controller support
pinctrl: aspeed: Fix ast2500 strap register write logic
...
This is an extremely quiet release for the regulator subsystem, it's all
fairly minor fixes and cleanups plus a few new drivers and ddevice ID
additions:
- Support for MediaTek MT6380, Ricoh RC5T619 and ST Voltage Reference
Buffers.
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Merge tag 'regulator-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"This is an extremely quiet release for the regulator subsystem, it's
all fairly minor fixes and cleanups plus a few new drivers and ddevice
ID additions:
- Support for MediaTek MT6380, Ricoh RC5T619 and ST Voltage Reference
Buffers"
* tag 'regulator-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (24 commits)
regulator: Add support for stm32-vrefbuf
regulator: Add STM32 Voltage Reference Buffer
regulator: pv88090: Exception handling for out of bounds
regulator: da9063: Return an error code on probe failure
regulator: rn5t618: add RC5T619 PMIC support
regulator: ltc3589: constify i2c_device_id
regulator: fan53555: fix I2C device ids
regulator: add fixes with MT6397 dt-bindings shouldn't reference driver
regulator: add fixes with MT6323 dt-bindings shouldn't reference driver
regulator: add fixes with MT6311 dt-bindings shouldn't reference driver
regulator: Add document for MediaTek MT6380 regulator
regulator: mt6380: Add support for MT6380
regulator: pwm-regulator: Remove unneeded gpiod NULL check
regulator: core: fix a possible race in disable_work handling
regulator: fan53555: Use of_device_get_match_data() to simplify probe
regulator: of: regulator_of_get_init_data() missing of_node_get()
regulator: pwm-regulator: fix example syntax
regulator: Convert to using %pOF instead of full_name
regulator: cpcap: Add OF mode mapping
regulator: cpcap: Fix standby mode
...
A fairly quiet release for the SPI subsystem:
- Move to using IDR for allocating bus numbers.
- Modernisation of the ep93xx driver, removing a lot of open coding and
using the framework more.
- The tools have been moved to use the standard tools build system and
an install target added (there will be a fairly trivial conflict
with tip resulting from the changes in the main tools Makefile).
- A refactoring of the Qualcomm QUP driver which enables new variants
to be supported.
- Explicit support for the Freescale i.MX53 and i.MX6 SPI, Renesas
R-Car H3 and Rockchip RV1108 controllers.
There's also a trivial add/add conflict in spi.c with the ACPI tree
adding a header for some Apple support and the IDR code needing a header
too.
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Merge tag 'spi-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"A fairly quiet release for the SPI subsystem:
- Move to using IDR for allocating bus numbers
- Modernisation of the ep93xx driver, removing a lot of open coding
and using the framework more
- The tools have been moved to use the standard tools build system
and an install target added (there will be a fairly trivial
conflict with tip resulting from the changes in the main tools
Makefile)
- A refactoring of the Qualcomm QUP driver which enables new variants
to be supported
- Explicit support for the Freescale i.MX53 and i.MX6 SPI, Renesas
R-Car H3 and Rockchip RV1108 controllers"
* tag 'spi-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (71 commits)
spi: spi-falcon: drop check of boot select
spi: imx: fix use of native chip-selects with devicetree
spi: pl022: constify amba_id
spi: imx: fix little-endian build
spi: omap: Allocate bus number from spi framework
spi: Kernel coding style fixes
spi: imx: dynamic burst length adjust for PIO mode
spi: Pick spi bus number from Linux idr or spi alias
spi: rockchip: configure CTRLR1 according to size and data frame
spi: altera: Consolidate TX/RX data register access
spi: altera: Switch to SPI core transfer queue management
spi: rockchip: add compatible string for rv1108 spi
spi: qup: fix 64-bit build warning
spi: qup: hide warning for uninitialized variable
spi: spi-ep93xx: use the default master transfer queueing mechanism
spi: spi-ep93xx: remove private data 'current_msg'
spi: spi-ep93xx: pass the spi_master pointer around
spi: spi-ep93xx: absorb the interrupt enable/disable helpers
spi: spi-ep93xx: add spi master prepare_transfer_hardware()
spi: spi-ep93xx: use 32-bit read/write for all registers
...
Here is the big char/misc driver update for 4.14-rc1.
Lots of different stuff in here, it's been an active development cycle
for some reason. Highlights are:
- updated binder driver, this brings binder up to date with what
shipped in the Android O release, plus some more changes that
happened since then that are in the Android development trees.
- coresight updates and fixes
- mux driver file renames to be a bit "nicer"
- intel_th driver updates
- normal set of hyper-v updates and changes
- small fpga subsystem and driver updates
- lots of const code changes all over the driver trees
- extcon driver updates
- fmc driver subsystem upadates
- w1 subsystem minor reworks and new features and drivers added
- spmi driver updates
Plus a smattering of other minor driver updates and fixes.
All of these have been in linux-next with no reported issues for a
while.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH:
"Here is the big char/misc driver update for 4.14-rc1.
Lots of different stuff in here, it's been an active development cycle
for some reason. Highlights are:
- updated binder driver, this brings binder up to date with what
shipped in the Android O release, plus some more changes that
happened since then that are in the Android development trees.
- coresight updates and fixes
- mux driver file renames to be a bit "nicer"
- intel_th driver updates
- normal set of hyper-v updates and changes
- small fpga subsystem and driver updates
- lots of const code changes all over the driver trees
- extcon driver updates
- fmc driver subsystem upadates
- w1 subsystem minor reworks and new features and drivers added
- spmi driver updates
Plus a smattering of other minor driver updates and fixes.
All of these have been in linux-next with no reported issues for a
while"
* tag 'char-misc-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (244 commits)
ANDROID: binder: don't queue async transactions to thread.
ANDROID: binder: don't enqueue death notifications to thread todo.
ANDROID: binder: Don't BUG_ON(!spin_is_locked()).
ANDROID: binder: Add BINDER_GET_NODE_DEBUG_INFO ioctl
ANDROID: binder: push new transactions to waiting threads.
ANDROID: binder: remove proc waitqueue
android: binder: Add page usage in binder stats
android: binder: fixup crash introduced by moving buffer hdr
drivers: w1: add hwmon temp support for w1_therm
drivers: w1: refactor w1_slave_show to make the temp reading functionality separate
drivers: w1: add hwmon support structures
eeprom: idt_89hpesx: Support both ACPI and OF probing
mcb: Fix an error handling path in 'chameleon_parse_cells()'
MCB: add support for SC31 to mcb-lpc
mux: make device_type const
char: virtio: constify attribute_group structures.
Documentation/ABI: document the nvmem sysfs files
lkdtm: fix spelling mistake: "incremeted" -> "incremented"
perf: cs-etm: Fix ETMv4 CONFIGR entry in perf.data file
nvmem: include linux/err.h from header
...
Here is the big staging and IIO driver update for 4.14-rc1.
Lots of staging driver fixes and cleanups, including some reorginizing
of the lustre header files to try to impose some sanity on what is, and
what is not, the uapi for that filesystem.
There are some tty core changes in here as well, as the speakup drivers
need them, and that's ok with me, they are sane and the speakup code is
getting nicer because of it.
There is also the addition of the obiligatory new wifi driver, just
because it has been a release or two since we added our last one...
Other than that, lots and lots of small coding style fixes, as usual.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO driver updates from Greg KH:
"Here is the big staging and IIO driver update for 4.14-rc1.
Lots of staging driver fixes and cleanups, including some reorginizing
of the lustre header files to try to impose some sanity on what is,
and what is not, the uapi for that filesystem.
There are some tty core changes in here as well, as the speakup
drivers need them, and that's ok with me, they are sane and the
speakup code is getting nicer because of it.
There is also the addition of the obiligatory new wifi driver, just
because it has been a release or two since we added our last one...
Other than that, lots and lots of small coding style fixes, as usual.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (612 commits)
staging:rtl8188eu:core Fix remove unneccessary else block
staging: typec: fusb302: make structure fusb302_psy_desc static
staging: unisys: visorbus: make two functions static
staging: fsl-dpaa2/eth: fix off-by-one FD ctrl bitmaks
staging: r8822be: Simplify deinit_priv()
staging: r8822be: Remove some dead code
staging: vboxvideo: Use CONFIG_DRM_KMS_FB_HELPER to check for fbdefio availability
staging:rtl8188eu Fix comparison to NULL
staging: rts5208: rename mmc_ddr_tunning_rx_cmd to mmc_ddr_tuning_rx_cmd
Staging: Pi433: style fix - tabs and spaces
staging: pi433: fix spelling mistake: "preample" -> "preamble"
staging:rtl8188eu:core Fix Code Indent
staging: typec: fusb302: Export current-limit through a power_supply class dev
staging: typec: fusb302: Add support for USB2 charger detection through extcon
staging: typec: fusb302: Use client->irq as irq if set
staging: typec: fusb302: Get max snk mv/ma/mw from device-properties
staging: typec: fusb302: Set max supply voltage to 5V
staging: typec: tcpm: Add get_current_limit tcpc_dev callback
staging:rtl8188eu Use __func__ instead of function name
staging: lustre: coding style fixes found by checkpatch.pl
...
Here is the big tty/serial driver update for 4.14-rc1.
Well, not all that big, just a number of small serial driver fixes, and
a new serial driver. Also in here are some much needed goldfish tty
driver (emulator) fixes to try to get that codebase under control.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial updates from Greg KH:
"Here is the big tty/serial driver update for 4.14-rc1.
Well, not all that big, just a number of small serial driver fixes,
and a new serial driver. Also in here are some much needed goldfish
tty driver (emulator) fixes to try to get that codebase under control.
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (94 commits)
tty: goldfish: Implement support for kernel 'earlycon' parameter
tty: goldfish: Use streaming DMA for r/w operations on Ranchu platforms
tty: goldfish: Refactor constants to better reflect their nature
serial: 8250_port: Remove useless NULL checks
earlycon: initialise baud field of earlycon device structure
tty: hvcs: make ktermios const
pty: show associative slave of ptmx in fdinfo
tty: n_gsm: Add compat_ioctl
tty: hvcs: constify vio_device_id
tty: hvc_vio: constify vio_device_id
tty: mips_ejtag_fdc: constify mips_cdmm_device_id
Introduce 8250_men_mcb
mcb: introduce mcb_get_resource()
serial: imx: Avoid post-PIO cleanup if TX DMA is started
tty: serial: imx: disable irq after suspend
serial: 8250_uniphier: add suspend/resume support
serial: 8250_uniphier: use CHAR register for canary to detect power-off
serial: 8250_uniphier: fix serial port index in private data
serial: 8250: of: Add new port type for MediaTek BTIF controller on MT7622/23 SoC
dt-bindings: serial: 8250: Add MediaTek BTIF controller bindings
...
Here is the large USB and PHY driver update for 4.14-rc1.
Not all that exciting, a few new PHY drivers, the usual mess of gadget
driver updates and fixes, and of course, xhci updates to try to tame
that beast.
A number of usb-serial updates and other small fixes all over the USB
driver tree are in here as well. Full details are in the shortlog.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY driver updates from Greg KH:
"Here is the large USB and PHY driver update for 4.14-rc1.
Not all that exciting, a few new PHY drivers, the usual mess of gadget
driver updates and fixes, and of course, xhci updates to try to tame
that beast.
A number of usb-serial updates and other small fixes all over the USB
driver tree are in here as well. Full details are in the shortlog.
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (171 commits)
usbip: vhci-hcd: make vhci_hc_driver const
usb: phy: Avoid unchecked dereference warning
usb: imx21-hcd: make imx21_hc_driver const
usb: host: make ehci_fsl_overrides const and __initconst
dt-bindings: mt8173-mtu3: add generic compatible and rename file
dt-bindings: mt8173-xhci: add generic compatible and rename file
usb: xhci-mtk: add generic compatible string
usbip: auto retry for concurrent attach
USB: serial: option: simplify 3 D-Link device entries
USB: serial: option: add support for D-Link DWM-157 C1
usb: core: usbport: fix "BUG: key not in .data" when lockdep is enabled
usb: chipidea: usb2: check memory allocation failure
usb: Add device quirk for Logitech HD Pro Webcam C920-C
usb: misc: lvstest: add entry to place port in compliance mode
usb: xhci: Support enabling of compliance mode for xhci 1.1
usb:xhci:Fix regression when ATI chipsets detected
usb: quirks: add delay init quirk for Corsair Strafe RGB keyboard
usb: gadget: make snd_pcm_hardware const
usb: common: use of_property_read_bool()
USB: core: constify vm_operations_struct
...
- VMAP_STACK support, allowing the kernel stacks to be allocated in
the vmalloc space with a guard page for trapping stack overflows. One
of the patches introduces THREAD_ALIGN and changes the generic
alloc_thread_stack_node() to use this instead of THREAD_SIZE (no
functional change for other architectures)
- Contiguous PTE hugetlb support re-enabled (after being reverted a
couple of times). We now have the semantics agreed in the generic mm
layer together with API improvements so that the architecture code can
detect between contiguous and non-contiguous huge PTEs
- Initial support for persistent memory on ARM: DC CVAP instruction
exposed to user space (HWCAP) and the in-kernel pmem API implemented
- raid6 improvements for arm64: faster algorithm for the delta syndrome
and implementation of the recovery routines using Neon
- FP/SIMD refactoring and removal of support for Neon in interrupt
context. This is in preparation for full SVE support
- PTE accessors converted from inline asm to cmpxchg so that we can
use LSE atomics if available (ARMv8.1)
- Perf support for Cortex-A35 and A73
- Non-urgent fixes and cleanups
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
- VMAP_STACK support, allowing the kernel stacks to be allocated in the
vmalloc space with a guard page for trapping stack overflows. One of
the patches introduces THREAD_ALIGN and changes the generic
alloc_thread_stack_node() to use this instead of THREAD_SIZE (no
functional change for other architectures)
- Contiguous PTE hugetlb support re-enabled (after being reverted a
couple of times). We now have the semantics agreed in the generic mm
layer together with API improvements so that the architecture code
can detect between contiguous and non-contiguous huge PTEs
- Initial support for persistent memory on ARM: DC CVAP instruction
exposed to user space (HWCAP) and the in-kernel pmem API implemented
- raid6 improvements for arm64: faster algorithm for the delta syndrome
and implementation of the recovery routines using Neon
- FP/SIMD refactoring and removal of support for Neon in interrupt
context. This is in preparation for full SVE support
- PTE accessors converted from inline asm to cmpxchg so that we can use
LSE atomics if available (ARMv8.1)
- Perf support for Cortex-A35 and A73
- Non-urgent fixes and cleanups
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (75 commits)
arm64: cleanup {COMPAT_,}SET_PERSONALITY() macro
arm64: introduce separated bits for mm_context_t flags
arm64: hugetlb: Cleanup setup_hugepagesz
arm64: Re-enable support for contiguous hugepages
arm64: hugetlb: Override set_huge_swap_pte_at() to support contiguous hugepages
arm64: hugetlb: Override huge_pte_clear() to support contiguous hugepages
arm64: hugetlb: Handle swap entries in huge_pte_offset() for contiguous hugepages
arm64: hugetlb: Add break-before-make logic for contiguous entries
arm64: hugetlb: Spring clean huge pte accessors
arm64: hugetlb: Introduce pte_pgprot helper
arm64: hugetlb: set_huge_pte_at Add WARN_ON on !pte_present
arm64: kexec: have own crash_smp_send_stop() for crash dump for nonpanic cores
arm64: dma-mapping: Mark atomic_pool as __ro_after_init
arm64: dma-mapping: Do not pass data to gen_pool_set_algo()
arm64: Remove the !CONFIG_ARM64_HW_AFDBM alternative code paths
arm64: Ignore hardware dirty bit updates in ptep_set_wrprotect()
arm64: Move PTE_RDONLY bit handling out of set_pte_at()
kvm: arm64: Convert kvm_set_s2pte_readonly() from inline asm to cmpxchg()
arm64: Convert pte handling from inline asm to using (cmp)xchg
arm64: neon/efi: Make EFI fpsimd save/restore variables static
...
Pull s390 updates from Martin Schwidefsky:
"The first part of the s390 updates for 4.14:
- Add machine type 0x3906 for IBM z14
- Add IBM z14 TLB flushing improvements for KVM guests
- Exploit the TOD clock epoch extension to provide a continuous TOD
clock afer 2042/09/17
- Add NIAI spinlock hints for IBM z14
- Rework the vmcp driver and use CMA for the respone buffer of z/VM
CP commands
- Drop some s390 specific asm headers and use the generic version
- Add block discard for DASD-FBA devices under z/VM
- Add average request times to DASD statistics
- A few of those constify patches which seem to be in vogue right now
- Cleanup and bug fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (50 commits)
s390/mm: avoid empty zero pages for KVM guests to avoid postcopy hangs
s390/dasd: Add discard support for FBA devices
s390/zcrypt: make CPRBX const
s390/uaccess: avoid mvcos jump label
s390/mm: use generic mm_hooks
s390/facilities: fix typo
s390/vmcp: simplify vmcp_response_free()
s390/topology: Remove the unused parent_node() macro
s390/dasd: Change unsigned long long to unsigned long
s390/smp: convert cpuhp_setup_state() return code to zero on success
s390: fix 'novx' early parameter handling
s390/dasd: add average request times to dasd statistics
s390/scm: use common completion path
s390/pci: log changes to uid checking
s390/vmcp: simplify vmcp_ioctl()
s390/vmcp: return -ENOTTY for unknown ioctl commands
s390/vmcp: split vmcp header file and move to uapi
s390/vmcp: make use of contiguous memory allocator
s390/cpcmd,vmcp: avoid GFP_DMA allocations
s390/vmcp: fix uaccess check and avoid undefined behavior
...
Pull parisc updates from Helge Deller:
"Major changes include:
- Full support of the firmware Page Deallocation Table with
MADV_HWPOISON and MADV_SOFT_OFFLINE. A kernel thread scans
regularily for new bad memory pages.
- Full support for self-extracting kernel.
- Added UBSAN support.
- Lots of section mismatch fixes across all parisc drivers.
- Added examples for %pF and %pS usage in printk-formats.txt"
* 'parisc-4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: (28 commits)
printk-formats.txt: Add examples for %pF and %pS usage
parisc: Fix up devices below a PCI-PCI MegaRAID controller bridge
parisc/core: Fix section mismatches
parisc/ipmi_si_intf: Fix section mismatches on parisc platform
parisc/input/hilkbd: Fix section mismatches
parisc/net/lasi_82596: Fix section mismatches
parisc/serio: Fix section mismatches in gscps2 and hp_sdc drivers
parisc: Fix section mismatches in parisc core drivers
parisc/parport_gsc: Fix section mismatches
parisc/scsi/lasi700: Fix section mismatches
parisc/scsi/zalon: Fix section mismatches
parisc/8250_gsc: Fix section mismatches
parisc/mux: Fix section mismatches
parisc/sticore: Fix section mismatches
parisc/harmony: Fix section mismatches
parisc: Wire up support for self-extracting kernel
parisc: Make existing core files reuseable for bootloader
parisc: Add core code for self-extracting kernel
parisc: Enable UBSAN support
parisc/random: Add machine specific randomness
...
When migrating guests around we need to know the active priorities to
ensure functional virtual interrupt prioritization by the GIC.
This commit clarifies the API and how active priorities of interrupts in
different groups are represented, and implements the accessor functions
for the uaccess register range.
We live with a slight layering violation in accessing GICv3 data
structures from vgic-mmio-v2.c, because anything else just adds too much
complexity for us to deal with (it's not like there's a benefit
elsewhere in the code of an intermediate representation as is the case
with the VMCR). We accept this, because while doing v3 processing from
a file named something-v2.c can look strange at first, this really is
specific to dealing with the user space interface for something that
looks like a GICv2.
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
Pretty much any node can have a status property, so it doesn't need to
be in examples.
Converted with the following command and removed examples with SoC and
board specific splits:
git grep -l -E 'status.*=.*' Documentation/devicetree/ | xargs sed -i -E '/\sstatus.*=.*"(disabled|ok|okay)/d'
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Avoid this warning:
/devel/v4l/docs/Documentation/media/v4l-drivers/qcom_camss.rst:: WARNING: document isn't included in any toctree
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There's a chapter for the legacy APIs. Move the frontend DVBv3
API to it, and update the chapter's introduction accordingly.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Adjust the table to be better displayed on PDF output.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There appears to be an issue in using \small in certain cases on Sphinx
1.4 and 1.5. Other format documents don't use \small either, remove it
from here as well.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
[mchehab@s-opensource.com: kept tabularcolumns - readjusted - and
add a few blank lines for it to display better]
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Right now, Sphinx unconditionally creates a blank page with
just "Contents:" on it, on PDF output. While this makes sense
for html, it doesn't o PDF, as LaTeX does what's required
automatically.
Fix it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
On several tables, the color sample location table preamble is
written as:
Color Sample Location..
Instead of:
Color Sample Location:
I suspect that the repetition of such pattern was due to some
copy-and-paste (or perhaps some error during DocBook conversion).
Anyway, fix it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
While doing a visual inspection with Sphinx 1.5, I noticed that
one of the columns was smaller than the text written there.
As this is the only thing I noticed with Sphinx 1.5, I suspect
that this was also a problem with Sphinx 1.4. Yet, I opted to
touch it in a way that wouldn't cause backward issues.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
On all vivid parameters, there's an space after the parameter,
except for "DV Timings Signal Mode". That makes this single one
to be written in bold, and, at PDF output, at the same line as
its description.
Use the same convention as the other parameters, in order to
adjust its output.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
It doesn't make any sense having a driver programming's chapter
at the uAPI book, as this is related to kernel API. Also,
we now have such kAPI book where V4L2 driver programming is covered.
So, get rid of this left-over.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There's an important note there, but it is not using the
ReST markup. So, it doesn't get any visual highlight on
the output.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Most tables there don't fit on 80 columns. Some are very big.
While those tables are actually generated via scripts, every
time a new board is added, the entire table could be reformatted.
>From the diffstat PoV, that's bad, as it is hard to see what
happened.
One such example is at changeset 4868f6e1fce6 ("media:
em28xx-cardlist.rst: update to reflect last changes"):
The USB ID for "Plextor ConvertX PX-AV100U" was added to card
number 9, with caused the entire table to be reformatted.
So, instead, use flat-tables. While here, fix PDF output,
by adding tablecolumns to the tables that need it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The tables there don't quite fit on PDF output.
Adjust it by adding a tabularcolumns macro.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The "Table of Contents" of a PDF file is generated only once,
at the beginning fo the output. It doesn't produce it on
each part.
So, don't output this text on each part of the document.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Several tables at this media book chapter have issues
when PDF is produced. Adjust them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
A literal box provides a better visual when pdf and html output
is generated for things like the output of a sysfs devnode.
It alsod matches other conventions used within the media book.
So, use it.
While here, use literals for protocol names.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Commit 70b074df4e ("media: fix pdf build with Spinx 1.6") caused
a regression at Sphinx 1.4 PDF build: although it produces a full
document in batch mode, it returns errors on interactive mode:
[63]
Runaway argument?
{\relax
! Paragraph ended before \multicolumn was complete.
<to be read again>
\par
l.7703 \hline\end{tabulary}
The error seems to be due to some bug at Sphinx PDF output:
when multicolumns is used, it doesn't accept an empty string.
Just removing the :cpan:`1` and replacing by two empty
columns fix the issue.
Fixes: 70b074df4e ("media: fix pdf build with Spinx 1.6")
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
On tests with Spinx 1.4, some tables are still writing text
outside cells. Adjust those tables.
PS.: As this was revisited several times, I suspect that this
will only be fully fixed if we add tabularcolumns to all tables
at the V4L2 part of the book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The Tuner Audio Matrix table is broken: the first row has 7
columns instead of 6, causing it to be parsed wrong and displayed
very badly on PDF output.
Fix it and adjust the table to look nice at PDF output
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
In the past, V4L2 versions were 0.x.y, but that changed years
ago. Since Kernel 3.1, however, the numbering schema was changed
to match the Kernel version.
However, the presented example still uses the old numerating
schema, with is a misleading information.
So, update it to the new schema.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Several ioctls are missing descriptions for the third argument
of the ioctl() command. They should have a description, as
otherwise the output won't be ok, and will sound like something
is missing.
So, add them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Usually, CA messages are sent/received via reading/writing at
the CA device node. However, two drivers (dst_ca and firedtv-ci)
also implement it via ioctls.
Apparently, on both cases, the net result is the same.
Anyway, let's document it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The av7110 driver uses CA_SET_DESCR to store the descrambler
control words at the CA descrambler slots.
Document it.
Thanks-to: Honza Petrouš <jpetrous@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
As we did with frontend.h, ca.h and dmx.h, move the struct
definition to net.h.
That should help to keep it updated, as more stuff gets
added there.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Originally, when DVB was introduced, all codecs would be part of
MPEG2 standard. That's not true anymore, as there are a large
number of codec standards used on digital TV nowadays.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The hardware description mentions that some parts are optional.
Make it clearer at the drawing.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This ioctl is supported by the DVB core, but was never
documented.
Add a documentation for it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Do minor editorial changes to improve documentation readability:
- mark literals as such;
- add table markups to hint sizes;
- define what PES means;
- instead of hardcoding devnode numbers to zero (like adapter0/) use a
question mark, to indicate that multiple devnodes may exist;
- add cross-references where useful.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There are several missing items at the API history. Yet,
as we're doing a significant change there, add a new entry.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The struct that contains an union of DVB parameters is
called dvb_frontend_parameters (and not FrontendParameters).
Fix it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
In the past, the documentation used to say that, if a CRC error
was found, a "-ECRC" error would be returned. That's not true:
the DVB core will just silently ignore such errors.
So, add an explicit note about that.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The usage of the term "DVB" at the dvb API docs is confusing,
as, right now, it can refer to either the European digital TV
standard or to the subsystem.
So, prefer calling it as "Digital TV" on most places, to avoid
ambiguity.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The device node name for CA is wrong since ever. I suspect
that the name there was before DVBv3 (with was the first API
introduced at the Kernel).
Anyway, use the right name there.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There are several issues on the return value for ioctls:
- Text is confusing;
- Some error codes don't exist;
- The non-generic error codes should come before the text
that points to the generic error codes;
- Tables don't contain column size hints;
- Some references are not marked as such.
Correct them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This error can be produced at least at the DVB subsystem.
As it is generic enough, document it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Instead of having one chapter per file, place all of them at
the same chapter. That better organize the chapters at the uAPI
documentation.
As a side effect, now all uAPI headers are at the same page,
at the html output, with makes easier to use it as a reference
index for the spec.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Right now, the same undocumented structs are on two places:
at ca_data_types.rst and together with their ioctls.
Move them to just one place and use the standard way to
represent them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
While we don't have any documentation for it, based on what's
there at Kaffeine and VDR, it seems that this command should
be issued before start using CA. So, document it as such.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
For most of the stuff there, documenting is easy, as the
header file contains information.
Yet, I was unable to document two data structs:
ca_msg and ca_descr
As those two structs are used by a few drivers, keep them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This ioctl seems to be some attempt to support a feature
at the bt8xx dst_ca driver. Yet, as said there, it
"needs more work". Right now, the code there is just
a boilerplate.
At the end of the day, no driver uses this ioctl, nor it is
documented anywhere (except for "needs more work").
So, get rid of it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Due to a mistake, the DVB net chapter was actually broken
into two different chapters. Fix it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The demux documentation is pretty poor nowadays: most of the
structs and enums aren't documented at all.
Add proper kernel-doc markups for them and use it.
Now, the demux API data structures are fully documented :-)
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This seems to be a pure fictional API :-)
It only exists at the DVB book, with no code implemeting it.
So, just get rid of it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There's no driver currently using it; it is also not
documented about what it would be supposed to do.
So, get rid of it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There's a flag defined for Digital TV demux that is not used
anywhere, called DMX_KERNEL_CLIENT. Get rid of it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Several frontend properties are specific to a subset of the
delivery systems. Make it clearer when describing each
property.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Now that frontend.h contains most documentation for the frontend,
remove the duplicated information from Documentation/ and use the
kernel-doc auto-generated one instead.
That should simplify maintainership of DVB frontend uAPI, as most
of the documentation will stick with the header file.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Both CA and decoders are optional. Also, the presence or
absence has nothing to do on being a PCI card or not.
Nowadays, most hardware leaves the decoders to either the
GPU or to some ISP inside the SoC, instead of implementing
it inside the Digital TV part of the device.
So, change the wording to reflect the hardware changes.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The references there are only for DVB. Add missing references for
ATSC and ISDB standards.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
On several places at the introduction, a digital TV board and its
kernel support is called as DVB. The reason is simple: by the
time the document was written, there were no other digital TV
standards :-)
Modernize the specs by referring to them as Digital TV.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add Device Tree bindings for RAVE Supervisory Processor, an MCU
implementing varoius bits of housekeeping functionality (watchdoging,
backlight control, LED control, etc) on RAVE family of products by
Zodiac Inflight Innovations.
Acked-by: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Add DT bindings for the ROHM BD9571MWV-M PMIC. This PMIC has
the following features:
- multiple voltage monitors for 1V8, 2V5, 3V3 voltage rail
- one voltage regulator for DVFS
- two GPIOs
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The X-Powers AXP813 is a PMIC designed to be paired with Allwinner's
A83T SoC. There is also an AXP818, which is paired with the H8 SoC.
The two models seem to be identical, apart from the external markings.
This patch introduces the basic mfd and regulator bindings for the
AXP813.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The binding already lists compatibles and regulators for the AXP806,
but it is missing from the list of supported chips at the beginning.
Add it.
Fixes: 204ae2963e ("mfd: axp20x: Add bindings for AXP806 PMIC")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
A new compatible string is introduced for SMC on sama5d2 to manage a
different layout of the registers.
Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
│Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
DA9052 allows using the touchscreen input pins as general purpose
analogue input pin by wiring analogue inputs to X+, X-, Y+ and Y-
and providing a reference voltage at TSIREF pin.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Add a binding for the RTC on the Realtek RTD119x/RTD129x SoC families.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Allwinner V3s has a DMA engine similar to the ones from A31, but with
fewer channels and DRQs.
Add support for it.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Renesas R-Car V3M (R8A77970) SoC also has the R-Car gen2/3 compatible DMA
controllers, so document the SoC specific binding.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Pull x86 cache quality monitoring update from Thomas Gleixner:
"This update provides a complete rewrite of the Cache Quality
Monitoring (CQM) facility.
The existing CQM support was duct taped into perf with a lot of issues
and the attempts to fix those turned out to be incomplete and
horrible.
After lengthy discussions it was decided to integrate the CQM support
into the Resource Director Technology (RDT) facility, which is the
obvious choise as in hardware CQM is part of RDT. This allowed to add
Memory Bandwidth Monitoring support on top.
As a result the mechanisms for allocating cache/memory bandwidth and
the corresponding monitoring mechanisms are integrated into a single
management facility with a consistent user interface"
* 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits)
x86/intel_rdt: Turn off most RDT features on Skylake
x86/intel_rdt: Add command line options for resource director technology
x86/intel_rdt: Move special case code for Haswell to a quirk function
x86/intel_rdt: Remove redundant ternary operator on return
x86/intel_rdt/cqm: Improve limbo list processing
x86/intel_rdt/mbm: Fix MBM overflow handler during CPU hotplug
x86/intel_rdt: Modify the intel_pqr_state for better performance
x86/intel_rdt/cqm: Clear the default RMID during hotcpu
x86/intel_rdt: Show bitmask of shareable resource with other executing units
x86/intel_rdt/mbm: Handle counter overflow
x86/intel_rdt/mbm: Add mbm counter initialization
x86/intel_rdt/mbm: Basic counting of MBM events (total and local)
x86/intel_rdt/cqm: Add CPU hotplug support
x86/intel_rdt/cqm: Add sched_in support
x86/intel_rdt: Introduce rdt_enable_key for scheduling
x86/intel_rdt/cqm: Add mount,umount support
x86/intel_rdt/cqm: Add rmdir support
x86/intel_rdt: Separate the ctrl bits from rmdir
x86/intel_rdt/cqm: Add mon_data
x86/intel_rdt: Prepare for RDT monitor data support
...
Linus Torvalds
Geert Uytterhoeven
Andrew Jeffery
Christopher Bostic
Sean Wang
Martin Blumenstingl
Wim Van Sebroeck
Baruch Siach
Robert P. J. Day
Davidlohr Bueso
Jérôme Glisse
SeongJae Park
Mauro Carvalho Chehab
Radim Krčmář
Zhang Rui
Bjorn Helgaas
Daniel Colascione
Aaron Lu
Huang Ying
Jan Kara
Michal Hocko
Minchan Kim
Ross Zwisler
Vinod Koul
Olof Johansson
Christoffer Dall
Rob Herring
Sakari Ailus
Andrey Smirnov
Marek Vasut
Chen-Yu Tsai
Ludovic Desroches
Sebastian Reichel
Lee Jones
Andreas Färber
Icenowy Zheng
Sergei Shtylyov