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The top level QEMU virt machine compatible, linux,dummy-virt, has been
in use for a long time, but never documented. Add a schema for it.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20220310021224.599398-1-robh@kernel.org
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Convert the QEMU fw-cfg binding to DT schema format. As this binding is
also used on Risc-V now, drop any architecture references and move to a
common location. The fw-cfg interface has also gained some DMA support
which is coherent, so add the missing 'dma-coherent'.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Link: https://lore.kernel.org/r/20220310013552.549590-1-robh@kernel.org
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PL022 has two input clocks named sspclk and apb_pclk. Current schema
refers to two notations of sspclk which are indeed same and thus one can
be dropped. Update clock-names property to reflect the same.
Signed-off-by: Kuldeep Singh <singh.kuldeep87k@gmail.com>
Link: https://lore.kernel.org/r/20220309171847.5345-1-singh.kuldeep87k@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add required properties "resets" and "reset_names", which are used to
specify audiosys hw reset for mt8195 afe driver.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://lore.kernel.org/r/20220308072435.22460-3-trevor.wu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add sysfs nodes for the frequency generator and signal counters.
Update SMA selector lists for these, and also add the new
'None', 'VCC' 'GND' selectors.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert the MediaTek UART APDMA Controller binding to DT schema.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20220217095242.13761-1-angelogioacchino.delregno@collabora.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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SoCFPGA dts updates for v5.18, part 2
- More dt-bindings cleanup, this time, USB DWC2 properties
- Add SDR EDAC dts entry for the N5X platform
* tag 'socfpga_dts_update_for_v5.18_part2' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
arm64: dts: n5x: add sdr edac support
arm64: dts: agilex/stratix10: add clock-names to USB DWC2 node
dt-bindings: usb: dwc2: add disable-over-current
dt-bindings: usb: dwc2: add iommus
dt-bindings: usb: dwc2: fix compatible of Intel Agilex
Link: https://lore.kernel.org/r/20220310195740.151250-1-dinguyen@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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It is not obvious from the documentation that using the "port" channel
for the console requires telnetd to be installed (see port_connection()
in arch/um/drivers/port_user.c). Mention this, and the fact that UML
will not boot until a client connects.
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Acked-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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Add documentation for the dtb command line option and the
ability to load/parse device trees.
Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Reviewed-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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* irq/aic-v2:
: .
: Add support for the interrupt controller found is the latest
: incarnation of Apple M1 systems, courtesy of Hector Martin.
: .
irqchip/apple-aic: Add support for AICv2
irqchip/apple-aic: Support multiple dies
irqchip/apple-aic: Dynamically compute register offsets
irqchip/apple-aic: Switch to irq_domain_create_tree and sparse hwirqs
irqchip/apple-aic: Add Fast IPI support
dt-bindings: interrupt-controller: apple,aic2: New binding for AICv2
PCI: apple: Change MSI handling to handle 4-cell AIC fwspec form
Signed-off-by: Marc Zyngier <maz@kernel.org>
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This new incompatible revision of the AIC peripheral introduces
multi-die support. This binding is based on apple,aic, but
changes interrupt-cells to add a new die argument.
Also adds a second reg entry to specify the offset of the event
register. Inexplicably, the capability registers allow us to compute
other register offsets, but not this one. This allows us to keep
forward-compatibility with future SoCs that will likely implement
different die counts, thus shifting the event register. Apple also
specify the offset explicitly in their device tree...
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220309192123.152028-3-marcan@marcan.st
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Marc Kleine-Budde says:
====================
pull-request: can-next 2022-03-10
The first 3 patches are by Oliver Hartkopp, target the CAN ISOTP
protocol and update the CAN frame sending behavior, and increases the
max PDU size to 64 kByte.
The next 2 patches are also by Oliver Hartkopp and update the virtual
VXCAN driver so that CAN frames send into the peer name space show up
as RX'ed CAN frames.
Vincent Mailhol contributes a patch for the etas_es58x driver to fix a
false positive dereference uninitialized variable warning.
2 patches by Ulrich Hecht add r8a779a0 SoC support to the rcar_canfd
driver.
The remaining 21 patches target the gs_usb driver and are by Peter
Fink, Ben Evans, Eric Evenchick and me. This series cleans up the
gs-usb driver, documents some bits of the USB ABI used by the widely
used open source firmware candleLight, adds support for up to 3 CAN
interfaces per USB device, adds CAN-FD support, adds quirks for some
hardware and software workarounds and finally adds support for 2 new
devices.
* tag 'linux-can-next-for-5.18-20220310' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next: (29 commits)
can: gs_usb: add VID/PID for ABE CAN Debugger devices
can: gs_usb: add VID/PID for CES CANext FD devices
can: gs_usb: add extended bt_const feature
can: gs_usb: activate quirks for CANtact Pro unconditionally
can: gs_usb: add quirk for CANtact Pro overlapping GS_USB_BREQ value
can: gs_usb: add usb quirk for NXP LPC546xx controllers
can: gs_usb: add CAN-FD support
can: gs_usb: use union and FLEX_ARRAY for data in struct gs_host_frame
can: gs_usb: support up to 3 channels per device
can: gs_usb: gs_usb_probe(): introduce udev and make use of it
can: gs_usb: document the PAD_PKTS_TO_MAX_PKT_SIZE feature
can: gs_usb: document the USER_ID feature
can: gs_usb: update GS_CAN_FEATURE_IDENTIFY documentation
can: gs_usb: add HW timestamp mode bit
can: gs_usb: gs_make_candev(): call SET_NETDEV_DEV() after handling all bt_const->feature
can: gs_usb: rewrap usb_control_msg() and usb_fill_bulk_urb()
can: gs_usb: rewrap error messages
can: gs_usb: GS_CAN_FLAG_OVERFLOW: make use of BIT()
can: gs_usb: sort include files alphabetically
can: gs_usb: fix checkpatch warning
...
====================
Link: https://lore.kernel.org/r/20220310142903.341658-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Convert Qualcomm cpufreq devicetree binding to YAML.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
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Qcom CPUFREQ HW don't have the support for generic performance domains yet.
So use MediaTek CPUFREQ HW that has the support available in mainline.
This also silences the below dtschema warnings for "cpufreq-qcom-hw.yaml":
Documentation/devicetree/bindings/dvfs/performance-domain.example.dt.yaml: performance-controller@12340000: reg: [[305397760, 4096]] is too short
From schema: Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml
Documentation/devicetree/bindings/dvfs/performance-domain.example.dt.yaml: performance-controller@12340000: 'clocks' is a required property
From schema: Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml
Documentation/devicetree/bindings/dvfs/performance-domain.example.dt.yaml: performance-controller@12340000: 'clock-names' is a required property
From schema: Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml
Documentation/devicetree/bindings/dvfs/performance-domain.example.dt.yaml: performance-controller@12340000: '#freq-domain-cells' is a required property
From schema: Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml
Documentation/devicetree/bindings/dvfs/performance-domain.example.dt.yaml: performance-controller@12340000: '#performance-domain-cells' does not match any of the regexes: 'pinctrl-[0-9]+'
From schema: Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml
Cc: Hector Yuan <hector.yuan@mediatek.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
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Add bindings for the audio clocks on the StarFive JH7100 RISC-V SoC.
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Link: https://lore.kernel.org/r/20220126173953.1016706-5-kernel@esmil.dk
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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net/dsa/dsa2.c
commit afb3cc1a397d ("net: dsa: unlock the rtnl_mutex when dsa_master_setup() fails")
commit e83d56537859 ("net: dsa: replay master state events in dsa_tree_{setup,teardown}_master")
https://lore.kernel.org/all/20220307101436.7ae87da0@canb.auug.org.au/
drivers/net/ethernet/intel/ice/ice.h
commit 97b0129146b1 ("ice: Fix error with handling of bonding MTU")
commit 43113ff73453 ("ice: add TTY for GNSS module for E810T device")
https://lore.kernel.org/all/20220310112843.3233bcf1@canb.auug.org.au/
drivers/staging/gdm724x/gdm_lte.c
commit fc7f750dc9d1 ("staging: gdm724x: fix use after free in gdm_lte_rx()")
commit 4bcc4249b4cf ("staging: Use netif_rx().")
https://lore.kernel.org/all/20220308111043.1018a59d@canb.auug.org.au/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add compatible strings list for SAMA7G5.
Signed-off-by: Sergiu Moga <sergiu.moga@microchip.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220310114553.184763-4-sergiu.moga@microchip.com
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Convert I2C binding for Atmel/Microchip SoCs to Device Tree Schema
format.
Signed-off-by: Sergiu Moga <sergiu.moga@microchip.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220310114553.184763-3-sergiu.moga@microchip.com
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Convert existing txt bindings to yaml format.
Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220304103225.111428-1-clement.leger@bootlin.com
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Add i.MX8MP PCIe compatible string.
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1646644054-24421-5-git-send-email-hongxing.zhu@nxp.com
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Vinod writes:
phy-for-5.18
- New support:
- Mediatek tphy support for MT8186
- Qualcomm usb phy support for sc8180x and sc8280xp
- Qualcomm ufs phy support for sc8180x and sc8280xp
- Qualcomm usb phy support for MSM8953
- Cadence D-Phy Rx support
- Sun4i support for USB phy
- Rockchip naneng combo phy support for RK3568
- Qualcomm eDP PHY for sc7280
- Updates:
- wake on support for Synopsis XHCI controllers
- Yamilify Qualcomm USB HS phy binding
- Charger detection support for TI tusb1210
* tag 'phy-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (53 commits)
phy: qcom-qmp: add sc8280xp UFS PHY
dt-bindings: phy: qcom,qmp: add sc8180x and sc8280xp ufs compatibles
phy: qcom-snps: Add sc8280xp support
dt-bindings: phy: qcom,usb-snps-femto-v2: Add sc8180x and sc8280xp
dt-bindings: Revert "dt-bindings: soc: grf: add naneng combo phy register compatible"
phy: dt-bindings: Add Cadence D-PHY Rx bindings
phy: dt-bindings: cdns,dphy: add power-domains property
phy: dt-bindings: Convert Cadence DPHY binding to YAML
phy: cadence: Add Cadence D-PHY Rx driver
dt-bindings: phy: renesas,usb2-phy: Document RZ/V2L phy bindings
Revert "PCI: aardvark: Fix initialization with old Marvell's Arm Trusted Firmware"
Revert "usb: host: xhci: mvebu: make USB 3.0 PHY optional for Armada 3720"
Revert "ata: ahci: mvebu: Make SATA PHY optional for Armada 3720"
phy: marvell: phy-mvebu-a3700-comphy: Add native kernel implementation
phy: marvell: phy-mvebu-a3700-comphy: Remove port from driver configuration
phy: phy-brcm-usb: fixup BCM4908 support
dt-bindings: phy: mediatek,tphy: Add compatible for MT8192
phy: ti: tusb1210: Add charger detection
phy: ti: tusb1210: Add a delay between power-on and restoring the phy-parameters
phy: ti: tusb1210: Drop tusb->vendor_specific2 != 0 check from tusb1210_power_on()
...
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Vinod writes:
soundwire updates for 5.17-rc1
- stream handling refactoring and renaming to make it consistent
in the core
- runtime pm suport for qcom driver
- in band wake up interrupt support for qcom driver
* tag 'soundwire-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: (27 commits)
soundwire: qcom: use __maybe_unused for swrm_runtime_resume()
soundwire: qcom: constify static struct qcom_swrm_data global variables
soundwire: qcom: add in-band wake up interrupt support
dt-bindings: soundwire: qcom: document optional wake irq
soundwire: qcom: add runtime pm support
soundwire: stream: make enable/disable/deprepare idempotent
soundwire: stream: sdw_stream_add_ functions can be called multiple times
soundwire: stream: introduce sdw_slave_rt_find() helper
soundwire: stream: separate alloc and config within sdw_stream_add_xxx()
soundwire: stream: move list addition to sdw_slave_alloc_rt()
soundwire: stream: rename and move master/slave_rt_free routines
soundwire: stream: group sdw_stream_ functions
soundwire: stream: split sdw_alloc_slave_rt() in alloc and config
soundwire: stream: move sdw_alloc_slave_rt() before 'master' helpers
soundwire: stream: split sdw_alloc_master_rt() in alloc and config
soundwire: stream: simplify sdw_alloc_master_rt()
soundwire: stream: group sdw_port and sdw_master/slave_port functions
soundwire: stream: add 'slave' prefix for port range checks
soundwire: stream: split alloc and config in two functions
soundwire: stream: split port allocation and configuration loops
...
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Add the i.MX8MM PCIe compatible string.
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1646293805-18248-1-git-send-email-hongxing.zhu@nxp.com
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Pull ARM SoC fixes from Arnd Bergmann:
"Here is a third set of fixes for the soc tree, well within the
expected set of changes.
Maintainer list changes:
- Krzysztof Kozlowski and Jisheng Zhang both have new email addresses
- Broadcom iProc has a new git tree
Regressions:
- Robert Foss sends a revert for a Mediatek DPI bridge patch that
caused an inadvertent break in the DT binding
- mstar timers need to be included in Kconfig
Devicetree fixes for:
- Aspeed ast2600 spi pinmux
- Tegra eDP panels on Nyan FHD
- Tegra display IOMMU
- Qualcomm sm8350 UFS clocks
- minor DT changes for Marvell Armada, Qualcomm sdx65, Qualcomm
sm8450, and Broadcom BCM2711"
* tag 'soc-fixes-5.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
arm64: dts: marvell: armada-37xx: Remap IO space to bus address 0x0
MAINTAINERS: Update Jisheng's email address
Revert "arm64: dts: mt8183: jacuzzi: Fix bus properties in anx's DSI endpoint"
dt-bindings: drm/bridge: anx7625: Revert DPI support
ARM: dts: aspeed: Fix AST2600 quad spi group
MAINTAINERS: update Krzysztof Kozlowski's email
MAINTAINERS: Update git tree for Broadcom iProc SoCs
ARM: tegra: Move Nyan FHD panels to AUX bus
arm64: dts: armada-3720-turris-mox: Add missing ethernet0 alias
ARM: mstar: Select HAVE_ARM_ARCH_TIMER
soc: mediatek: mt8192-mmsys: Fix dither to dsi0 path's input sel
arm64: dts: mt8183: jacuzzi: Fix bus properties in anx's DSI endpoint
ARM: boot: dts: bcm2711: Fix HVS register range
arm64: dts: qcom: c630: disable crypto due to serror
arm64: dts: qcom: sm8450: fix apps_smmu interrupts
arm64: dts: qcom: sm8450: enable GCC_USB3_0_CLKREF_EN for usb
arm64: dts: qcom: sm8350: Correct UFS symbol clocks
arm64: tegra: Disable ISO SMMU for Tegra194
Revert "dt-bindings: arm: qcom: Document SDX65 platform and boards"
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The RISC-V CPU idle states will be described in under the
/cpus/idle-states DT node in the same way as ARM CPU idle
states.
This patch adds common bindings documentation for both ARM
and RISC-V idle states.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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Running yamllint is effectively required for binding schemas, so print a
warning if not found rather than silently skipping running it.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20220303221417.2486268-1-robh@kernel.org
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It was added in commit 766121ba5de3 ("arm64/mte: Add userspace interface
for enabling asymmetric mode").
Signed-off-by: Evgenii Stepanov <eugenis@google.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220309215943.87831-1-eugenis@google.com
Signed-off-by: Will Deacon <will@kernel.org>
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* irq/aic-pmu:
: .
: Prefix branch for the M1 PMU support, adding the required
: irqchip changes. Shared with the arm64 tree.
: .
irqchip/apple-aic: Fix cpumask allocation for FIQs
irqchip/apple-aic: Move PMU-specific registers to their own include file
arm64: dts: apple: Add t8303 PMU nodes
arm64: dts: apple: Add t8103 PMU interrupt affinities
irqchip/apple-aic: Wire PMU interrupts
irqchip/apple-aic: Parse FIQ affinities from device-tree
dt-bindings: apple,aic: Add affinity description for per-cpu pseudo-interrupts
dt-bindings: apple,aic: Add CPU PMU per-cpu pseudo-interrupts
dt-bindings: arm-pmu: Document Apple PMU compatible strings
Signed-off-by: Marc Zyngier <maz@kernel.org>
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Document support for rcar_canfd on R8A779A0 (V3U) SoCs.
Link: https://lore.kernel.org/all/20220309162609.3726306-5-uli+renesas@fpond.eu
Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Add device tree bindings for the Microchip fpga fabric based "core" PWM
controller.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Acked-by: Uwe Kleine-K=F6nig <u.kleine-koenig@pengutronix.de>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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Add device tree bindings for the gpio controller on
the Microchip PolarFire SoC.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Acked-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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Add device tree bindings for the real time clock on
the Microchip PolarFire SoC.
Signed-off-by: Daire McNamara <daire.mcnamara@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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The services actually provided by the system controller are not
documented so add some words about what the system controller can
actually do. Add a link to the oneline documentation with the specific
details of each individual service.
Also, drop the unneeded label from the example.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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The Polarfire SoC is currently using two different compatible string
prefixes. Fix this by changing "polarfire-soc-*" strings to "mpfs-*" in
its system controller in order to match the compatible string used in
the soc binding and device tree
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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Back when tcp_tso_autosize() and TCP pacing were introduced,
our focus was really to reduce burst sizes for long distance
flows.
The simple heuristic of using sk_pacing_rate/1024 has worked
well, but can lead to too small packets for hosts in the same
rack/cluster, when thousands of flows compete for the bottleneck.
Neal Cardwell had the idea of making the TSO burst size
a function of both sk_pacing_rate and tcp_min_rtt()
Indeed, for local flows, sending bigger bursts is better
to reduce cpu costs, as occasional losses can be repaired
quite fast.
This patch is based on Neal Cardwell implementation
done more than two years ago.
bbr is adjusting max_pacing_rate based on measured bandwidth,
while cubic would over estimate max_pacing_rate.
/proc/sys/net/ipv4/tcp_tso_rtt_log can be used to tune or disable
this new feature, in logarithmic steps.
Tested:
100Gbit NIC, two hosts in the same rack, 4K MTU.
600 flows rate-limited to 20000000 bytes per second.
Before patch: (TSO sizes would be limited to 20000000/1024/4096 -> 4 segments per TSO)
~# echo 0 >/proc/sys/net/ipv4/tcp_tso_rtt_log
~# nstat -n;perf stat ./super_netperf 600 -H otrv6 -l 20 -- -K dctcp -q 20000000;nstat|egrep "TcpInSegs|TcpOutSegs|TcpRetransSegs|Delivered"
96005
Performance counter stats for './super_netperf 600 -H otrv6 -l 20 -- -K dctcp -q 20000000':
65,945.29 msec task-clock # 2.845 CPUs utilized
1,314,632 context-switches # 19935.279 M/sec
5,292 cpu-migrations # 80.249 M/sec
940,641 page-faults # 14264.023 M/sec
201,117,030,926 cycles # 3049769.216 GHz (83.45%)
17,699,435,405 stalled-cycles-frontend # 8.80% frontend cycles idle (83.48%)
136,584,015,071 stalled-cycles-backend # 67.91% backend cycles idle (83.44%)
53,809,530,436 instructions # 0.27 insn per cycle
# 2.54 stalled cycles per insn (83.36%)
9,062,315,523 branches # 137422329.563 M/sec (83.22%)
153,008,621 branch-misses # 1.69% of all branches (83.32%)
23.182970846 seconds time elapsed
TcpInSegs 15648792 0.0
TcpOutSegs 58659110 0.0 # Average of 3.7 4K segments per TSO packet
TcpExtTCPDelivered 58654791 0.0
TcpExtTCPDeliveredCE 19 0.0
After patch:
~# echo 9 >/proc/sys/net/ipv4/tcp_tso_rtt_log
~# nstat -n;perf stat ./super_netperf 600 -H otrv6 -l 20 -- -K dctcp -q 20000000;nstat|egrep "TcpInSegs|TcpOutSegs|TcpRetransSegs|Delivered"
96046
Performance counter stats for './super_netperf 600 -H otrv6 -l 20 -- -K dctcp -q 20000000':
48,982.58 msec task-clock # 2.104 CPUs utilized
186,014 context-switches # 3797.599 M/sec
3,109 cpu-migrations # 63.472 M/sec
941,180 page-faults # 19214.814 M/sec
153,459,763,868 cycles # 3132982.807 GHz (83.56%)
12,069,861,356 stalled-cycles-frontend # 7.87% frontend cycles idle (83.32%)
120,485,917,953 stalled-cycles-backend # 78.51% backend cycles idle (83.24%)
36,803,672,106 instructions # 0.24 insn per cycle
# 3.27 stalled cycles per insn (83.18%)
5,947,266,275 branches # 121417383.427 M/sec (83.64%)
87,984,616 branch-misses # 1.48% of all branches (83.43%)
23.281200256 seconds time elapsed
TcpInSegs 1434706 0.0
TcpOutSegs 58883378 0.0 # Average of 41 4K segments per TSO packet
TcpExtTCPDelivered 58878971 0.0
TcpExtTCPDeliveredCE 9664 0.0
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Link: https://lore.kernel.org/r/20220309015757.2532973-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Details are added for the event, cpumask and format attributes
in the ABI documentation.
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Reviewed-by: Madhavan Srinivasan <maddy@in.ibm.com>
Link: https://lore.kernel.org/r/20220225143024.47947-5-kjain@linux.ibm.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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The VGA arbiter is really PCI-specific and doesn't depend on any GPU
things. Move it to the PCI subsystem.
Note that misc_init() must be called before vga_arb_device_init(). These
are both subsys_initcalls, so this ordering depends on the link order,
which is determined by drivers/Makefile:
obj-y += pci/
obj-y += char/ <-- misc_init()
obj-y += gpu/ <-- vga_arb_device_init() (before this commit)
The drivers/pci/ subsys_initcalls are called *before* misc_init(), so
convert vga_arb_device_init() to subsys_initcall_sync(), which is called
after *all* subsys_initcalls.
Link: https://lore.kernel.org/r/20220224224753.297579-2-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Translate scheduler/sched-stats.rst into Chinese.
Signed-off-by: Tang Yizhou <tangyizhou@huawei.com>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/20220309153659.24437-1-tangyizhou@huawei.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Translate .../Devicetree/of_unittest.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/da75225df2ac7bee8de653d95b2a872510b34f7d.1646642188.git.siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Translate .../Devicetree/usage-model.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/abc4bfa5a8eb438013913bf8ea5f8a29e5730f33.1646642188.git.siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Translate .../devicetree/index.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/0a01f2eee980da02c0810d3d99b95af9013b646f.1646642188.git.siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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The applying patches document
(Documentation/process/applying-patches.rst) mentions incremental stable
patches, but there is no example of how to apply them. Describe the
process.
While at it, remove note about incremental patches and move the external
link of 5.x.y incremental patches to "Where can I download patches?"
section.
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://lore.kernel.org/r/20220307063340.256671-1-bagasdotme@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Follow-up pull req for v5.18 to pull in some important fixes.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGvwHFHEd+9df-0aBOCfmw+ULvTS3f18sJuq_cvGKLDSjw@mail.gmail.com
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Translate .../peci/peci.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/00577790cb16375e0016513e03d06b671006a3da.1646108017.git.siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Translate .../pici/index.rst into Chinese
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/9fdba94417277ae20db7e3b13418584c652be93f.1646108017.git.siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Translate .../riscv/vm-layout.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/b59965f7f88ea22ec824dc2e92561b018fd370d1.1646108017.git.siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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As a follow-up to the UMN incident[1], the TAB took the responsibility
to document Researcher Guidelines so there would be a common place to
point for describing our expectations as a developer community.
Document best practices researchers should follow to participate
successfully with the Linux developer community.
[1] https://lore.kernel.org/lkml/202105051005.49BFABCE@keescook/
Co-developed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Co-developed-by: Jonathan Corbet <corbet@lwn.net>
Co-developed-by: Stefano Zacchiroli <zack@upsilon.cc>
Signed-off-by: Stefano Zacchiroli <zack@upsilon.cc>
Co-developed-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Steve Rostedt <rostedt@goodmis.org>
Acked-by: Laura Abbott <labbott@kernel.org>
Reviewed-by: Julia Lawall <julia.lawall@inria.fr>
Reviewed-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220304181418.1692016-1-keescook@chromium.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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This adds documentation for the BPF_PROG_RUN command; a short overview of
the command itself, and a more verbose description of the "live packet"
mode for XDP introduced in the previous commit.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20220309105346.100053-3-toke@redhat.com
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Add amd pstate tracer tool introduction
Signed-off-by: Jinzhou Su <Jinzhou.Su@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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As pointed out by Evgenii Stepanov one potential issue with the new ABI for
enabling asymmetric is that if there are multiple places where MTE is
configured in a process, some of which were compiled with the old prctl.h
and some of which were compiled with the new prctl.h, there may be problems
keeping track of which MTE modes are requested. For example some code may
disable only sync and async modes leaving asymmetric mode enabled when it
intended to fully disable MTE.
In order to avoid such mishaps remove asymmetric mode from the prctl(),
instead implicitly allowing it if both sync and async modes are requested.
This should not disrupt userspace since a process requesting both may
already see a mix of sync and async modes due to differing defaults between
CPUs or changes in default while the process is running but it does mean
that userspace is unable to explicitly request asymmetric mode without
changing the system default for CPUs.
Reported-by: Evgenii Stepanov <eugenis@google.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Evgenii Stepanov <eugenis@google.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Joey Gouly <joey.gouly@arm.com>
Cc: Branislav Rankov <branislav.rankov@arm.com>
Link: https://lore.kernel.org/r/20220309131200.112637-1-broonie@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
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Rob Herring
Kuldeep Singh
Trevor Wu
Jonathan Lemon
AngeloGioacchino Del Regno
Arnd Bergmann
Vincent Whitchurch
Anton Ivanov
Marc Zyngier
Hector Martin
Jakub Kicinski
Manivannan Sadhasivam
Emil Renner Berthing
Sergiu Moga
Clément Léger
Richard Zhu
Greg Kroah-Hartman
Linus Torvalds
Anup Patel
Evgenii Stepanov
Ulrich Hecht
Conor Dooley
Eric Dumazet
Kajol Jain
Bjorn Helgaas
Tang Yizhou
Yanteng Si
Bagas Sanjaya
Dave Airlie
Kees Cook
Toke Høiland-Jørgensen
Jinzhou Su
Mark Brown