Merge tag 'omap-for-v4.12/defconfig-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/defconfig

Defconfig updates for omaps for v4.12 merge window. Mostly
to update to use new ti-cpufreq driver, the rest is just
to enable drivers found on various devices:

- Update to use ti-cpufreq driver that we now have

- Enable SATA for ti81xx as a loadable module

- Enable Ethernet PHY for DP83848

- Enable modem related modules for PPP, QMI and USB ACM
  as loadable modules

- Enable droid 4 related drivers as lodable modules except
  for PMIC and regulator so eMMC can be used for root

* tag 'omap-for-v4.12/defconfig-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: omap2plus_defconfig: Enable droid 4 devices
  ARM: omap2plus_defconfig: Add QMI, ACM and PPP as loadable modules
  ARM: omap2plus_defconfig: Enable TI Ethernet PHY
  ARM: omap2plus_defconfig: enable ahci-dm816 module
  ARM: omap2plus_defconfig: Enable support for ti-cpufreq
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'imx-defconfig-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/defconfig

i.MX defconfig updates for 4.12:
 - Enable MAX11801 and HID_MULTITOUCH touch drivers.
 - Enable SMSC_PHY driver, as imx6sl-evk board has a LAN8720A ethernet
   phy supported by it.

* tag 'imx-defconfig-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: imx_v6_v7_defconfig: Select SMSC_PHY
  ARM: imx_v6_v7_defconfig: Select hid-multitouchdriver
  ARM: imx_v6_v7_defconfig: Select max11801_ts touchscreen driver
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'samsung-defconfig-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/defconfig

Samsung defconfig ARM update for v4.12:
1. Enable DYNAMIC_DEBUG because it is useful for debugging.
2. Increase CMA memory region to allow handling H.264 1080p videos.

* tag 'samsung-defconfig-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  ARM: exynos_defconfig: Increase CONFIG_CMA_SIZE_MBYTES to 96
  ARM: exynos_defconfig: Enable DYNAMIC_DEBUG and get rid of old ext3
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'qcom-defconfig-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/defconfig

Qualcomm ARM Based defconfig Updates for v4.12

* Enable QCOM remoteproc and related drivers

* tag 'qcom-defconfig-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
  ARM: qcom_defconfig: Enable Qualcomm remoteproc and related drivers
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'sunxi-defconfig-for-4.12' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into next/defconfig

Allwinner defconfig changes for 4.12

Some patches to enable new modules in the defconfig.

* tag 'sunxi-defconfig-for-4.12' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  ARM: multi_v7_defconfig: Switch AXP20x driver from module to built-in
  ARM: multi_v7_defconfig: Enable AC100 RTC driver
  ARM: multi_v7_defconfig: Switch sunxi RSB driver from module to built-in
  ARM: sunxi_defconfig: Enable AC100 RTC driver
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'socfpga_defconfig_updates_for_v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into next/defconfig

SoCFPGA defconfig updates for v4.12
- enables TSE(Triple-Speed-Ethernet) support

* tag 'socfpga_defconfig_updates_for_v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
  ARM: socfpga: updates for socfpga_defconfig
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'davinci-for-v4.12/defconfig-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/defconfig

Shift to the newly introduced PalmChip
PATA driver for DaVinci.

* tag 'davinci-for-v4.12/defconfig-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: davinci_all_defconfig: convert to use libata PATA
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'stm32-defconfig-for-v4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32 into next/defconfig

STM32 defconfig updates for v4.12, round 1.

Highlights:
----------
 - Enable I2C
 - Add config fragment for RAM start point

* tag 'stm32-defconfig-for-v4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32:
  ARM: configs: Add new config fragment to change RAM start point
  ARM: configs: stm32: Add I2C support
Signed-off-by: Olof Johansson <olof@lixom.net>

The phy is necessary for the dwc2 controllers driving the usb ports
on all arm32 Rockchip socs. Both the dwc2 as well as usb downstream
drivers (mass-storage as well as usb networking) are already built-in,
so only the phy is missing to allow booting from usb-devices without
to much hassle.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Olof Johansson <olof@lixom.net>

We only need to have MFD_CPCAP and CPCAP_REGULATOR as built-in to
be able to mount root on the eMMC. And then POWER_RESET_GPIO
is good to have built-in. The rest of the devices can be loadable
modules.

This gets various devices such as regulators, touchscreen, power
button, HDMI audio, LEDs, RTC, and ADC working.

Note that omapdrm needs to be configured manually as we're still
using omapfb by default.
Signed-off-by: Tony Lindgren <tony@atomide.com>

We have devices with modems connected, so let's make them usable.
Signed-off-by: Tony Lindgren <tony@atomide.com>

DP83848_PHY i.e. [TI TLK10X 10/100 Mbps PHY] is used on the
am335x-icev2 board. Enable the PHY driver for it.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Add a new fragment to over-ride the RAM start point to 0xd0000000.
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>

This patch adds I2C support for STM32 default configuration
Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>

These cause warnings in linux-next, as the symbols have become 'bool' there:

arch/arm/configs/multi_v7_defconfig:600:warning: symbol value 'm' invalid for ROCKCHIP_INNO_HDMI
arch/arm/configs/multi_v7_defconfig:599:warning: symbol value 'm' invalid for ROCKCHIP_DW_MIPI_DSI
arch/arm/configs/multi_v7_defconfig:598:warning: symbol value 'm' invalid for ROCKCHIP_DW_HDMI
arch/arm/configs/multi_v7_defconfig:597:warning: symbol value 'm' invalid for ROCKCHIP_ANALOGIX_DP
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Pull "Broadcom defconfig changes for 4.12" from Florian Fainelli:

This pull request contains Broadcom ARM-based SoCs defconfig updates for 4.12,
please pull the following:

- Gerd enables the BCM2835 MMC driver which yields better performance than the
  default one (iProc)

* tag 'arm-soc/for-4.12/defconfig' of http://github.com/Broadcom/stblinux:
  arm: set CONFIG_MMC_BCM2835=y in bcm2835_defconfig and multi_v7_defconfig
  ARM: bcm2835: Enable missing CMA settings for VC4 driver

Merge tag 'davinci-for-v4.12/defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/defconfig

Pull "DaVinci defconfig updates for v4.12" from Sekhar Nori:

DaVinci defconfig updates for enabling
Video capture and display on DA850 and
an ADC driver thats used by Lego EV3.

* tag 'davinci-for-v4.12/defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: davinci_all_defconfig: Enable TI ADS7950
  ARM: davinci_all_defconfig: enable IRQ support for pca953x
  ARM: davinci_all_defconfig: enable VPIF display modules

stm32_defconfig is used for several STM32 MCU: STM32F429, STM32F469,
STM32F746 and now STM32H743. Each of MCU listed have different interrupts
number mapped on NVIC. STM32F429: 81, STM32F469: 92, STM32F746: 97 and
STM32H743: 149. I could set CPU_V7M_NUM_IRQ to 149 but in order to avoid
forgetting to update this value for next STM32 MCU I prefer to set it to
max value: 240.
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

The imx6sl-evk board has a LAN8720A ethernet phy supported by SMSC_PHY.
Add this driver to the default imx config since the device is present on
one of the evaluation boards.

This used to work mostly fine with the generic phy driver until
commit 0878fff1 ("net: phy: Do not perform software reset for
Generic PHY"). The fact that soft reset is no longer performed
apparently causes RX to sometimes failes which can cause netboot to
timeout on DHCP. This is eventually retried and it works after link
up/down but can takes 90 seconds to reach the login prompt.

This was generated with "make savedefconfig" and it includes a few
additional minor cleanups.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

IDE subsystem has been deprecated since 2009 and the majority
(if not all) of Linux distributions have switched to use
libata for ATA support exclusively.  However there are still
some users (mostly old or/and embedded non-x86 systems) that
have not converted from using IDE subsystem to libata PATA
drivers.  This doesn't seem to be good thing in the long-term
for Linux as while there is less and less PATA systems left
in use:

* testing efforts are divided between two subsystems

* having duplicate drivers for same hardware confuses users

This patch converts davinci_all_defconfig to use libata PATA
drivers.
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
[b.zolnierkie: split from bigger patch + added patch description]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

An adsp-pil node is present in at least the MSM8974 SoC. Simply enable
all Qualcomm remoteproc drivers to avoid more work in the future.

The SMP2P driver is required for adsp-pil to initialize correctly.

Enable the SMSM driver at Bjorn Andersson's request: "We also need
CONFIG_QCOM_SMSM=y here, its currently used to signal state of the ring
buffers for WiFi."

CONFIG_QCOM_WCNSS_CTRL is required to load firmware/configuration data
into the WCNSS core, which handles WiFi and Bluetooth.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

Pull char/misc driver fixes from Greg KH:
 "A smattering of different small fixes for some random driver
  subsystems. Nothing all that major, just resolutions for reported
  issues and bugs.

  All have been in linux-next with no reported issues"

* tag 'char-misc-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (21 commits)
  extcon: int3496: Set the id pin to direction-input if necessary
  extcon: int3496: Use gpiod_get instead of gpiod_get_index
  extcon: int3496: Add dependency on X86 as it's Intel specific
  extcon: int3496: Add GPIO ACPI mapping table
  extcon: int3496: Rename GPIO pins in accordance with binding
  vmw_vmci: handle the return value from pci_alloc_irq_vectors correctly
  ppdev: fix registering same device name
  parport: fix attempt to write duplicate procfiles
  auxdisplay: img-ascii-lcd: add missing sentinel entry in img_ascii_lcd_matches
  Drivers: hv: vmbus: Don't leak memory when a channel is rescinded
  Drivers: hv: vmbus: Don't leak channel ids
  Drivers: hv: util: don't forget to init host_ts.lock
  Drivers: hv: util: move waiting for release to hv_utils_transport itself
  vmbus: remove hv_event_tasklet_disable/enable
  vmbus: use rcu for per-cpu channel list
  mei: don't wait for os version message reply
  mei: fix deadlock on mei reset
  intel_th: pci: Add Gemini Lake support
  intel_th: pci: Add Denverton SOC support
  intel_th: Don't leak module refcount on failure to activate
  ...

Merge tag 'driver-core-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fix from Greg KH:
 "Here is a single kernfs fix for 4.11-rc4 that resolves a reported
  issue.

  It has been in linux-next with no reported issues"

* tag 'driver-core-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  kernfs: Check KERNFS_HAS_RELEASE before calling kernfs_release_file()

Pull tty/serial driver fixes from Greg KH:
 "Here are some tty and serial driver fixes for 4.11-rc4.

  One of these fix a long-standing issue in the ldisc code that was
  found by Dmitry Vyukov with his great fuzzing work. The other fixes
  resolve other reported issues, and there is one revert of a patch in
  4.11-rc1 that wasn't correct.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: fix data race in tty_ldisc_ref_wait()
  tty: don't panic on OOM in tty_set_ldisc()
  Revert "tty: serial: pl011: add ttyAMA for matching pl011 console"
  tty: acpi/spcr: QDF2400 E44 checks for wrong OEM revision
  serial: 8250_dw: Fix breakage when HAVE_CLK=n
  serial: 8250_dw: Honor clk_round_rate errors in dw8250_set_termios

Pull IIO driver fixes from Greg KH:
 "Here are some small IIO driver fixes for 4.11-rc4 that resolve a
  number of tiny reported issues. All of these have been in linux-next
  for a while with no reported issues"

* tag 'staging-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  iio: imu: st_lsm6dsx: fix FIFO_CTRL2 overwrite during watermark configuration
  iio: adc: ti_am335x_adc: fix fifo overrun recovery
  iio: sw-device: Fix config group initialization
  iio: magnetometer: ak8974: remove incorrect __exit markups
  iio: hid-sensor-trigger: Change get poll value function order to avoid sensor properties losing after resume from S3

Pull USB/PHY fixes from Greg KH:
 "Here are a number of small USB and PHY driver fixes for 4.11-rc4.

  Nothing major here, just an bunch of small fixes, and a handfull of
  good fixes from Johan for devices with crazy descriptors. There are a
  few new device ids in here as well.

  All of these have been in linux-next with no reported issues"

* tag 'usb-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (26 commits)
  usb: gadget: f_hid: fix: Don't access hidg->req without spinlock held
  usb: gadget: udc: remove pointer dereference after free
  usb: gadget: f_uvc: Sanity check wMaxPacketSize for SuperSpeed
  usb: gadget: f_uvc: Fix SuperSpeed companion descriptor's wBytesPerInterval
  usb: gadget: acm: fix endianness in notifications
  usb: dwc3: gadget: delay unmap of bounced requests
  USB: serial: qcserial: add Dell DW5811e
  usb: hub: Fix crash after failure to read BOS descriptor
  ACM gadget: fix endianness in notifications
  USB: usbtmc: fix probe error path
  USB: usbtmc: add missing endpoint sanity check
  USB: serial: option: add Quectel UC15, UC20, EC21, and EC25 modems
  usb: musb: fix possible spinlock deadlock
  usb: musb: dsps: fix iounmap in error and exit paths
  usb: musb: cppi41: don't check early-TX-interrupt for Isoch transfer
  usb-core: Add LINEAR_FRAME_INTR_BINTERVAL USB quirk
  uwb: i1480-dfu: fix NULL-deref at probe
  uwb: hwa-rc: fix NULL-deref at probe
  USB: wusbcore: fix NULL-deref at probe
  USB: uss720: fix NULL-deref at probe
  ...

Pull more powerpc fixes from Michael Ellerman:
 "These are all pretty minor. The fix for idle wakeup would be a bad bug
  but has not been observed in practice.

  The update to the gcc-plugins docs was Cc'ed to Kees and Jon, Kees
  OK'ed it going via powerpc and I didn't hear from Jon.

   - cxl: Route eeh events to all slices for pci_channel_io_perm_failure state

   - powerpc/64s: Fix idle wakeup potential to clobber registers

   - Revert "powerpc/64: Disable use of radix under a hypervisor"

   - gcc-plugins: update architecture list in documentation

  Thanks to: Andrew Donnellan, Nicholas Piggin, Paul Mackerras, Vaibhav
  Jain"

* tag 'powerpc-4.11-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  gcc-plugins: update architecture list in documentation
  Revert "powerpc/64: Disable use of radix under a hypervisor"
  powerpc/64s: Fix idle wakeup potential to clobber registers
  cxl: Route eeh events to all slices for pci_channel_io_perm_failure state

Pull ext4 fixes from Ted Ts'o:
 "Fix a memory leak on an error path, and two races when modifying
  inodes relating to the inline_data and metadata checksum features"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix two spelling nits
  ext4: lock the xattr block before checksuming it
  jbd2: don't leak memory if setting up journal fails
  ext4: mark inode dirty after converting inline directory

Pull fscrypto fixes from Ted Ts'o:
 "A code cleanup and bugfix for fs/crypto"

* tag 'fscrypt-for-linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt:
  fscrypt: eliminate ->prepare_context() operation
  fscrypt: remove broken support for detecting keyring key revocation

Merge tag 'hwmon-for-linus-v4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - bug fixes in asus_atk0110, it87 and max31790 drivers

 - added missing API definition to hwmon core

* tag 'hwmon-for-linus-v4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (asus_atk0110) fix uninitialized data access
  hwmon: Add missing HWMON_T_ALARM
  hwmon: (it87) Avoid registering the same chip on both SIO addresses
  hwmon: (max31790) Set correct PWM value

Pull rdma fixes from Doug Ledford:
 "This has been a slow -rc cycle for the RDMA subsystem. We really
  haven't had a lot of rc fixes come in. This pull request is the first
  of this entire rc cycle and it has all of the suitable fixes so far
  and it's still only about 20 patches. The fix for the minor breakage
  cause by the dma mapping patchset is in here, as well as a couple
  other potential oops fixes, but the rest is more minor.

  Summary:

   - fix for dma_ops change in this kernel, resolving the s390, powerpc,
     and IOMMU operation

   - a few other oops fixes

   - the rest are all minor fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  IB/qib: fix false-postive maybe-uninitialized warning
  RDMA/iser: Fix possible mr leak on device removal event
  IB/device: Convert ib-comp-wq to be CPU-bound
  IB/cq: Don't process more than the given budget
  IB/rxe: increment msn only when completing a request
  uapi: fix rdma/mlx5-abi.h userspace compilation errors
  IB/core: Restore I/O MMU, s390 and powerpc support
  IB/rxe: Update documentation link
  RDMA/ocrdma: fix a type issue in ocrdma_put_pd_num()
  IB/rxe: double free on error
  RDMA/vmw_pvrdma: Activate device on ethernet link up
  RDMA/vmw_pvrdma: Dont hardcode QP header page
  RDMA/vmw_pvrdma: Cleanup unused variables
  infiniband: Fix alignment of mmap cookies to support VIPT caching
  IB/core: Protect against self-requeue of a cq work item
  i40iw: Receive netdev events post INET_NOTIFIER state

Pull audit fix from Paul Moore:
 "We've got an audit fix, and unfortunately it is big.

  While I'm not excited that we need to be sending you something this
  large during the -rcX phase, it does fix some very real, and very
  tangled, problems relating to locking, backlog queues, and the audit
  daemon connection.

  This code has passed our testsuite without problem and it has held up
  to my ad-hoc stress tests (arguably better than the existing code),
  please consider pulling this as fix for the next v4.11-rcX tag"

* 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit:
  audit: fix auditd/kernel connection state tracking

Signed-off-by: Theodore Ts'o <tytso@mit.edu>

We must lock the xattr block before calculating or verifying the
checksum in order to avoid spurious checksum failures.

https://bugzilla.kernel.org/show_bug.cgi?id=193661Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org

Pull clk fixes from Stephen Boyd:
 "A handful of Sunxi and Rockchip clk driver fixes and a core framework
  one where we need to copy a string because we can't guarantee it isn't
  freed sometime later"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: sunxi-ng: fix recalc_rate formula of NKMP clocks
  clk: sunxi-ng: Fix div/mult settings for osc12M on A64
  clk: rockchip: Make uartpll a child of the gpll on rk3036
  clk: rockchip: add "," to mux_pll_src_apll_dpll_gpll_usb480m_p on rk3036
  clk: core: Copy connection id
  dt-bindings: arm: update Armada CP110 system controller binding
  clk: sunxi-ng: sun6i: Fix enable bit offset for hdmi-ddc module clock
  clk: sunxi: ccu-sun5i needs nkmp
  clk: sunxi-ng: mp: Adjust parent rate for pre-dividers

aarch64-linux-gcc-7 complains about code it doesn't fully understand:

drivers/infiniband/hw/qib/qib_iba7322.c: In function 'qib_7322_txchk_change':
include/asm-generic/bitops/non-atomic.h:105:35: error: 'shadow' may be used uninitialized in this function [-Werror=maybe-uninitialized]

The code is right, and despite trying hard, I could not come up with a version
that I liked better than just adding a fake initialization here to shut up the
warning.

Fixes: f931551b ("IB/qib: Add new qib driver for QLogic PCIe InfiniBand adapters")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

When the rdma device is removed, we must cleanup all
the rdma resources within the DEVICE_REMOVAL event
handler to let the device teardown gracefully. When
this happens with live I/O, some memory regions are
occupied. Thus, track them too and dereg all the mr's.

We are safe with mr access by iscsi_iser_cleanup_task.
Reported-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

This workqueue is used by our storage target mode ULPs
via the new CQ API. Recent observations when working
with very high-end flash storage devices reveal that
UNBOUND workqueue threads can migrate between cpu cores
and even numa nodes (although some numa locality is accounted
for).

While this attribute can be useful in some workloads,
it does not fit in very nicely with the normal
run-to-completion model we usually use in our target-mode
ULPs and the block-mq irq<->cpu affinity facilities.

The whole block-mq concept is that the completion will
land on the same cpu where the submission was performed.
The fact that our submitter thread is migrating cpus
can break this locality.

We assume that as a target mode ULP, we will serve multiple
initiators/clients and we can spread the load enough without
having to use unbound kworkers.

Also, while we're at it, expose this workqueue via sysfs which
is harmless and can be useful for debug.
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>--
Signed-off-by: Doug Ledford <dledford@redhat.com>

The caller might not want this overhead.
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>