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author | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-08-11 13:15:19 +0300 |
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committer | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-08-11 13:15:19 +0300 |
commit | da86748bf60068e0d6ad56e5c919ca7e6782c4ba (patch) | |
tree | a33aed6aebab2333d9d5661c4fb3a2501d8de7a6 /Documentation | |
parent | 76a832254ab05502c9394cc51ded6f0abe0e0bee (diff) | |
parent | ed128e8b757b4e759e5585df720888b30a7f2196 (diff) | |
download | linux-da86748bf60068e0d6ad56e5c919ca7e6782c4ba.tar.xz |
Merge tag 'nand/for-4.19' of git://git.infradead.org/linux-mtd into mtd/next
Pull NAND updates from Miquel Raynal:
"
NAND core changes:
- Add the SPI-NAND framework.
- Create a helper to find the best ECC configuration.
- Create NAND controller operations.
- Allocate dynamically ONFI parameters structure.
- Add defines for ONFI version bits.
- Add manufacturer fixup for ONFI parameter page.
- Add an option to specify NAND chip as a boot device.
- Add Reed-Solomon error correction algorithm.
- Better name for the controller structure.
- Remove unused caller_is_module() definition.
- Make subop helpers return unsigned values.
- Expose _notsupp() helpers for raw page accessors.
- Add default values for dynamic timings.
- Kill the chip->scan_bbt() hook.
- Rename nand_default_bbt() into nand_create_bbt().
- Start to clean the nand_chip structure.
- Remove stale prototype from rawnand.h.
Raw NAND controllers drivers changes:
- Qcom: structuring cleanup.
- Denali: use core helper to find the best ECC configuration.
- Possible build of almost all drivers by adding a dependency on
COMPILE_TEST for almost all of them in Kconfig, implies various
fixes, Kconfig cleanup, GPIO headers inclusion cleanup, and even
changes in sparc64 and ia64 architectures.
- Clean the ->probe() functions error path of a lot of drivers.
- Migrate all drivers to use nand_scan() instead of
nand_scan_ident()/nand_scan_tail() pair.
- Use mtd_device_register() where applicable to simplify the code.
- Marvell:
* Handle on-die ECC.
* Better clocks handling.
* Remove bogus comment.
* Add suspend and resume support.
- Tegra: add NAND controller driver.
- Atmel:
* Add module param to avoid using dma.
* Drop Wenyou Yang from MAINTAINERS.
- Denali: optimize timings handling.
- FSMC: Stop using chip->read_buf().
- FSL:
* Switch to SPDX license tag identifiers.
* Fix qualifiers in MXC init functions.
Raw NAND chip drivers changes:
- Micron:
* Add fixup for ONFI revision.
* Update ecc_stats.corrected.
* Make ECC activation stateful.
* Avoid enabling/disabling ECC when it can't be disabled.
* Get the actual number of bitflips.
* Allow forced on-die ECC.
* Support 8/512 on-die ECC.
* Fix on-die ECC detection logic.
- Hynix:
* Fix decoding the OOB size on H27UCG8T2BTR.
* Use ->exec_op() in hynix_nand_reg_write_op().
"
Diffstat (limited to 'Documentation')
21 files changed, 255 insertions, 147 deletions
diff --git a/Documentation/admin-guide/pm/intel_pstate.rst b/Documentation/admin-guide/pm/intel_pstate.rst index ab2fe0eda1d7..8f1d3de449b5 100644 --- a/Documentation/admin-guide/pm/intel_pstate.rst +++ b/Documentation/admin-guide/pm/intel_pstate.rst @@ -324,8 +324,7 @@ Global Attributes ``intel_pstate`` exposes several global attributes (files) in ``sysfs`` to control its functionality at the system level. They are located in the -``/sys/devices/system/cpu/cpufreq/intel_pstate/`` directory and affect all -CPUs. +``/sys/devices/system/cpu/intel_pstate/`` directory and affect all CPUs. Some of them are not present if the ``intel_pstate=per_cpu_perf_limits`` argument is passed to the kernel in the command line. @@ -379,6 +378,17 @@ argument is passed to the kernel in the command line. but it affects the maximum possible value of per-policy P-state limits (see `Interpretation of Policy Attributes`_ below for details). +``hwp_dynamic_boost`` + This attribute is only present if ``intel_pstate`` works in the + `active mode with the HWP feature enabled <Active Mode With HWP_>`_ in + the processor. If set (equal to 1), it causes the minimum P-state limit + to be increased dynamically for a short time whenever a task previously + waiting on I/O is selected to run on a given logical CPU (the purpose + of this mechanism is to improve performance). + + This setting has no effect on logical CPUs whose minimum P-state limit + is directly set to the highest non-turbo P-state or above it. + .. _status_attr: ``status`` @@ -410,7 +420,7 @@ argument is passed to the kernel in the command line. That only is supported in some configurations, though (for example, if the `HWP feature is enabled in the processor <Active Mode With HWP_>`_, the operation mode of the driver cannot be changed), and if it is not - supported in the current configuration, writes to this attribute with + supported in the current configuration, writes to this attribute will fail with an appropriate error. Interpretation of Policy Attributes diff --git a/Documentation/core-api/kernel-api.rst b/Documentation/core-api/kernel-api.rst index 8e44aea366c2..76fe2d0f5e7d 100644 --- a/Documentation/core-api/kernel-api.rst +++ b/Documentation/core-api/kernel-api.rst @@ -284,7 +284,7 @@ Resources Management MTRR Handling ------------- -.. kernel-doc:: arch/x86/kernel/cpu/mtrr/main.c +.. kernel-doc:: arch/x86/kernel/cpu/mtrr/mtrr.c :export: Security Framework diff --git a/Documentation/devicetree/bindings/input/sprd,sc27xx-vibra.txt b/Documentation/devicetree/bindings/input/sprd,sc27xx-vibra.txt new file mode 100644 index 000000000000..f2ec0d4f2dff --- /dev/null +++ b/Documentation/devicetree/bindings/input/sprd,sc27xx-vibra.txt @@ -0,0 +1,23 @@ +Spreadtrum SC27xx PMIC Vibrator + +Required properties: +- compatible: should be "sprd,sc2731-vibrator". +- reg: address of vibrator control register. + +Example : + + sc2731_pmic: pmic@0 { + compatible = "sprd,sc2731"; + reg = <0>; + spi-max-frequency = <26000000>; + interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>; + interrupt-controller; + #interrupt-cells = <2>; + #address-cells = <1>; + #size-cells = <0>; + + vibrator@eb4 { + compatible = "sprd,sc2731-vibrator"; + reg = <0xeb4>; + }; + }; diff --git a/Documentation/devicetree/bindings/mtd/denali-nand.txt b/Documentation/devicetree/bindings/mtd/denali-nand.txt index 0ee8edb60efc..f33da8782741 100644 --- a/Documentation/devicetree/bindings/mtd/denali-nand.txt +++ b/Documentation/devicetree/bindings/mtd/denali-nand.txt @@ -8,6 +8,9 @@ Required properties: - reg : should contain registers location and length for data and reg. - reg-names: Should contain the reg names "nand_data" and "denali_reg" - interrupts : The interrupt number. + - clocks: should contain phandle of the controller core clock, the bus + interface clock, and the ECC circuit clock. + - clock-names: should contain "nand", "nand_x", "ecc" Optional properties: - nand-ecc-step-size: see nand.txt for details. If present, the value must be @@ -31,5 +34,7 @@ nand: nand@ff900000 { compatible = "altr,socfpga-denali-nand"; reg = <0xff900000 0x20>, <0xffb80000 0x1000>; reg-names = "nand_data", "denali_reg"; + clocks = <&nand_clk>, <&nand_x_clk>, <&nand_ecc_clk>; + clock-names = "nand", "nand_x", "ecc"; interrupts = <0 144 4>; }; diff --git a/Documentation/devicetree/bindings/mtd/nand.txt b/Documentation/devicetree/bindings/mtd/nand.txt index 8bb11d809429..e949c778e983 100644 --- a/Documentation/devicetree/bindings/mtd/nand.txt +++ b/Documentation/devicetree/bindings/mtd/nand.txt @@ -25,7 +25,7 @@ Optional NAND chip properties: Deprecated values: "soft_bch": use "soft" and nand-ecc-algo instead - nand-ecc-algo: string, algorithm of NAND ECC. - Supported values are: "hamming", "bch". + Valid values are: "hamming", "bch", "rs". - nand-bus-width : 8 or 16 bus width if not present 8 - nand-on-flash-bbt: boolean to enable on flash bbt option if not present false @@ -43,6 +43,10 @@ Optional NAND chip properties: This is particularly useful when only the in-band area is used by the upper layers, and you want to make your NAND as reliable as possible. +- nand-is-boot-medium: Whether the NAND chip is a boot medium. Drivers might use + this information to select ECC algorithms supported by + the boot ROM or similar restrictions. + - nand-rb: shall contain the native Ready/Busy ids. The ECC strength and ECC step size properties define the correction capability diff --git a/Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt b/Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt new file mode 100644 index 000000000000..b2f2ca12f9e6 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt @@ -0,0 +1,64 @@ +NVIDIA Tegra NAND Flash controller + +Required properties: +- compatible: Must be one of: + - "nvidia,tegra20-nand" +- reg: MMIO address range +- interrupts: interrupt output of the NFC controller +- clocks: Must contain an entry for each entry in clock-names. + See ../clocks/clock-bindings.txt for details. +- clock-names: Must include the following entries: + - nand +- resets: Must contain an entry for each entry in reset-names. + See ../reset/reset.txt for details. +- reset-names: Must include the following entries: + - nand + +Optional children nodes: +Individual NAND chips are children of the NAND controller node. Currently +only one NAND chip supported. + +Required children node properties: +- reg: An integer ranging from 1 to 6 representing the CS line to use. + +Optional children node properties: +- nand-ecc-mode: String, operation mode of the NAND ecc mode. Currently only + "hw" is supported. +- nand-ecc-algo: string, algorithm of NAND ECC. + Supported values with "hw" ECC mode are: "rs", "bch". +- nand-bus-width : See nand.txt +- nand-on-flash-bbt: See nand.txt +- nand-ecc-strength: integer representing the number of bits to correct + per ECC step (always 512). Supported strength using HW ECC + modes are: + - RS: 4, 6, 8 + - BCH: 4, 8, 14, 16 +- nand-ecc-maximize: See nand.txt +- nand-is-boot-medium: Makes sure only ECC strengths supported by the boot ROM + are chosen. +- wp-gpios: GPIO specifier for the write protect pin. + +Optional child node of NAND chip nodes: +Partitions: see partition.txt + + Example: + nand-controller@70008000 { + compatible = "nvidia,tegra20-nand"; + reg = <0x70008000 0x100>; + interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&tegra_car TEGRA20_CLK_NDFLASH>; + clock-names = "nand"; + resets = <&tegra_car 13>; + reset-names = "nand"; + + nand@0 { + reg = <0>; + #address-cells = <1>; + #size-cells = <1>; + nand-bus-width = <8>; + nand-on-flash-bbt; + nand-ecc-algo = "bch"; + nand-ecc-strength = <8>; + wp-gpios = <&gpio TEGRA_GPIO(S, 0) GPIO_ACTIVE_LOW>; + }; + }; diff --git a/Documentation/devicetree/bindings/mtd/qcom_nandc.txt b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt index 73d336befa08..1123cc6d56ef 100644 --- a/Documentation/devicetree/bindings/mtd/qcom_nandc.txt +++ b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt @@ -45,11 +45,12 @@ Required properties: number (e.g., 0, 1, 2, etc.) - #address-cells: see partition.txt - #size-cells: see partition.txt -- nand-ecc-strength: see nand.txt -- nand-ecc-step-size: must be 512. see nand.txt for more details. Optional properties: - nand-bus-width: see nand.txt +- nand-ecc-strength: see nand.txt. If not specified, then ECC strength will + be used according to chip requirement and available + OOB size. Each nandcs device node may optionally contain a 'partitions' sub-node, which further contains sub-nodes describing the flash partition mapping. See @@ -77,7 +78,6 @@ nand-controller@1ac00000 { reg = <0>; nand-ecc-strength = <4>; - nand-ecc-step-size = <512>; nand-bus-width = <8>; partitions { @@ -117,7 +117,6 @@ nand-controller@79b0000 { nand@0 { reg = <0>; nand-ecc-strength = <4>; - nand-ecc-step-size = <512>; nand-bus-width = <8>; partitions { diff --git a/Documentation/devicetree/bindings/mtd/spi-nand.txt b/Documentation/devicetree/bindings/mtd/spi-nand.txt new file mode 100644 index 000000000000..8b51f3b6d55c --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/spi-nand.txt @@ -0,0 +1,5 @@ +SPI NAND flash + +Required properties: +- compatible: should be "spi-nand" +- reg: should encode the chip-select line used to access the NAND chip diff --git a/Documentation/driver-api/infrastructure.rst b/Documentation/driver-api/infrastructure.rst index bee1b9a1702f..6172f3cc3d0b 100644 --- a/Documentation/driver-api/infrastructure.rst +++ b/Documentation/driver-api/infrastructure.rst @@ -49,10 +49,10 @@ Device Drivers Base Device Drivers DMA Management ----------------------------- -.. kernel-doc:: drivers/base/dma-coherent.c +.. kernel-doc:: kernel/dma/coherent.c :export: -.. kernel-doc:: drivers/base/dma-mapping.c +.. kernel-doc:: kernel/dma/mapping.c :export: Device drivers PnP support diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index 2c391338c675..37bf0a9de75c 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -441,8 +441,6 @@ prototypes: int (*iterate) (struct file *, struct dir_context *); int (*iterate_shared) (struct file *, struct dir_context *); __poll_t (*poll) (struct file *, struct poll_table_struct *); - struct wait_queue_head * (*get_poll_head)(struct file *, __poll_t); - __poll_t (*poll_mask) (struct file *, __poll_t); long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long); long (*compat_ioctl) (struct file *, unsigned int, unsigned long); int (*mmap) (struct file *, struct vm_area_struct *); @@ -473,7 +471,7 @@ prototypes: }; locking rules: - All except for ->poll_mask may block. + All may block. ->llseek() locking has moved from llseek to the individual llseek implementations. If your fs is not using generic_file_llseek, you @@ -505,9 +503,6 @@ in sys_read() and friends. the lease within the individual filesystem to record the result of the operation -->poll_mask can be called with or without the waitqueue lock for the waitqueue -returned from ->get_poll_head. - --------------------------- dquot_operations ------------------------------- prototypes: int (*write_dquot) (struct dquot *); diff --git a/Documentation/filesystems/cifs/AUTHORS b/Documentation/filesystems/cifs/AUTHORS index 9f4f87e16240..75865da2ce14 100644 --- a/Documentation/filesystems/cifs/AUTHORS +++ b/Documentation/filesystems/cifs/AUTHORS @@ -42,9 +42,11 @@ Jeff Layton (many, many fixes, as well as great work on the cifs Kerberos code) Scott Lovenberg Pavel Shilovsky (for great work adding SMB2 support, and various SMB3 features) Aurelien Aptel (for DFS SMB3 work and some key bug fixes) -Ronnie Sahlberg (for SMB3 xattr work and bug fixes) +Ronnie Sahlberg (for SMB3 xattr work, bug fixes, and lots of great work on compounding) Shirish Pargaonkar (for many ACL patches over the years) Sachin Prabhu (many bug fixes, including for reconnect, copy offload and security) +Paulo Alcantara +Long Li (some great work on RDMA, SMB Direct) Test case and Bug Report contributors @@ -58,5 +60,4 @@ mention to the Stanford Checker (SWAT) which pointed out many minor bugs in error paths. Valuable suggestions also have come from Al Viro and Dave Miller. -And thanks to the IBM LTC and Power test teams and SuSE testers for -finding multiple bugs during excellent stress test runs. +And thanks to the IBM LTC and Power test teams and SuSE and Citrix and RedHat testers for finding multiple bugs during excellent stress test runs. diff --git a/Documentation/filesystems/cifs/CHANGES b/Documentation/filesystems/cifs/CHANGES index bc0025cdd1c9..455e1cc494a9 100644 --- a/Documentation/filesystems/cifs/CHANGES +++ b/Documentation/filesystems/cifs/CHANGES @@ -1,3 +1,6 @@ +See https://wiki.samba.org/index.php/LinuxCIFSKernel for +more current information. + Version 1.62 ------------ Add sockopt=TCP_NODELAY mount option. EA (xattr) routines hardened diff --git a/Documentation/filesystems/cifs/TODO b/Documentation/filesystems/cifs/TODO index c5adf149b57f..852499aed64b 100644 --- a/Documentation/filesystems/cifs/TODO +++ b/Documentation/filesystems/cifs/TODO @@ -9,14 +9,14 @@ is a partial list of the known problems and missing features: a) SMB3 (and SMB3.02) missing optional features: - multichannel (started), integration with RDMA - - directory leases (improved metadata caching) - - T10 copy offload (copy chunk, and "Duplicate Extents" ioctl + - directory leases (improved metadata caching), started (root dir only) + - T10 copy offload ie "ODX" (copy chunk, and "Duplicate Extents" ioctl currently the only two server side copy mechanisms supported) b) improved sparse file support c) Directory entry caching relies on a 1 second timer, rather than -using Directory Leases +using Directory Leases, currently only the root file handle is cached longer d) quota support (needs minor kernel change since quota calls to make it to network filesystems or deviceless filesystems) @@ -42,6 +42,8 @@ mount or a per server basis to client UIDs or nobody if no mapping exists. Also better integration with winbind for resolving SID owners k) Add tools to take advantage of more smb3 specific ioctls and features +(passthrough ioctl/fsctl for sending various SMB3 fsctls to the server +is in progress) l) encrypted file support @@ -71,9 +73,8 @@ t) split cifs and smb3 support into separate modules so legacy (and less secure) CIFS dialect can be disabled in environments that don't need it and simplify the code. -u) Finish up SMB3.1.1 dialect support - -v) POSIX Extensions for SMB3.1.1 +v) POSIX Extensions for SMB3.1.1 (started, create and mkdir support added +so far). KNOWN BUGS ==================================== @@ -92,8 +93,8 @@ Misc testing to do 1) check out max path names and max path name components against various server types. Try nested symlinks (8 deep). Return max path name in stat -f information -2) Improve xfstest's cifs enablement and adapt xfstests where needed to test -cifs better +2) Improve xfstest's cifs/smb3 enablement and adapt xfstests where needed to test +cifs/smb3 better 3) Additional performance testing and optimization using iozone and similar - there are some easy changes that can be done to parallelize sequential writes, diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt index 829a7b7857a4..f608180ad59d 100644 --- a/Documentation/filesystems/vfs.txt +++ b/Documentation/filesystems/vfs.txt @@ -857,8 +857,6 @@ struct file_operations { ssize_t (*write_iter) (struct kiocb *, struct iov_iter *); int (*iterate) (struct file *, struct dir_context *); __poll_t (*poll) (struct file *, struct poll_table_struct *); - struct wait_queue_head * (*get_poll_head)(struct file *, __poll_t); - __poll_t (*poll_mask) (struct file *, __poll_t); long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long); long (*compat_ioctl) (struct file *, unsigned int, unsigned long); int (*mmap) (struct file *, struct vm_area_struct *); @@ -903,17 +901,6 @@ otherwise noted. activity on this file and (optionally) go to sleep until there is activity. Called by the select(2) and poll(2) system calls - get_poll_head: Returns the struct wait_queue_head that callers can - wait on. Callers need to check the returned events using ->poll_mask - once woken. Can return NULL to indicate polling is not supported, - or any error code using the ERR_PTR convention to indicate that a - grave error occured and ->poll_mask shall not be called. - - poll_mask: return the mask of EPOLL* values describing the file descriptor - state. Called either before going to sleep on the waitqueue returned by - get_poll_head, or after it has been woken. If ->get_poll_head and - ->poll_mask are implemented ->poll does not need to be implement. - unlocked_ioctl: called by the ioctl(2) system call. compat_ioctl: called by the ioctl(2) system call when 32 bit system calls diff --git a/Documentation/kbuild/kconfig-language.txt b/Documentation/kbuild/kconfig-language.txt index 3534a84d206c..64e0775a62d4 100644 --- a/Documentation/kbuild/kconfig-language.txt +++ b/Documentation/kbuild/kconfig-language.txt @@ -430,6 +430,12 @@ This sets the config program's title bar if the config program chooses to use it. It should be placed at the top of the configuration, before any other statement. +'#' Kconfig source file comment: + +An unquoted '#' character anywhere in a source file line indicates +the beginning of a source file comment. The remainder of that line +is a comment. + Kconfig hints ------------- diff --git a/Documentation/networking/e100.rst b/Documentation/networking/e100.rst index d4d837027925..9708f5fa76de 100644 --- a/Documentation/networking/e100.rst +++ b/Documentation/networking/e100.rst @@ -1,3 +1,4 @@ +============================================================== Linux* Base Driver for the Intel(R) PRO/100 Family of Adapters ============================================================== @@ -86,83 +87,84 @@ Event Log Message Level: The driver uses the message level flag to log events Additional Configurations ========================= - Configuring the Driver on Different Distributions - ------------------------------------------------- +Configuring the Driver on Different Distributions +------------------------------------------------- - Configuring a network driver to load properly when the system is started is - distribution dependent. Typically, the configuration process involves adding - an alias line to /etc/modprobe.d/*.conf as well as editing other system - startup scripts and/or configuration files. Many popular Linux - distributions ship with tools to make these changes for you. To learn the - proper way to configure a network device for your system, refer to your - distribution documentation. If during this process you are asked for the - driver or module name, the name for the Linux Base Driver for the Intel - PRO/100 Family of Adapters is e100. +Configuring a network driver to load properly when the system is started +is distribution dependent. Typically, the configuration process involves +adding an alias line to /etc/modprobe.d/*.conf as well as editing other +system startup scripts and/or configuration files. Many popular Linux +distributions ship with tools to make these changes for you. To learn +the proper way to configure a network device for your system, refer to +your distribution documentation. If during this process you are asked +for the driver or module name, the name for the Linux Base Driver for +the Intel PRO/100 Family of Adapters is e100. - As an example, if you install the e100 driver for two PRO/100 adapters - (eth0 and eth1), add the following to a configuration file in /etc/modprobe.d/ +As an example, if you install the e100 driver for two PRO/100 adapters +(eth0 and eth1), add the following to a configuration file in +/etc/modprobe.d/:: alias eth0 e100 alias eth1 e100 - Viewing Link Messages - --------------------- - In order to see link messages and other Intel driver information on your - console, you must set the dmesg level up to six. This can be done by - entering the following on the command line before loading the e100 driver:: - - dmesg -n 6 +Viewing Link Messages +--------------------- - If you wish to see all messages issued by the driver, including debug - messages, set the dmesg level to eight. +In order to see link messages and other Intel driver information on your +console, you must set the dmesg level up to six. This can be done by +entering the following on the command line before loading the e100 +driver:: - NOTE: This setting is not saved across reboots. + dmesg -n 6 +If you wish to see all messages issued by the driver, including debug +messages, set the dmesg level to eight. - ethtool - ------- +NOTE: This setting is not saved across reboots. - The driver utilizes the ethtool interface for driver configuration and - diagnostics, as well as displaying statistical information. The ethtool - version 1.6 or later is required for this functionality. +ethtool +------- - The latest release of ethtool can be found from - https://www.kernel.org/pub/software/network/ethtool/ +The driver utilizes the ethtool interface for driver configuration and +diagnostics, as well as displaying statistical information. The ethtool +version 1.6 or later is required for this functionality. - Enabling Wake on LAN* (WoL) - --------------------------- - WoL is provided through the ethtool* utility. For instructions on enabling - WoL with ethtool, refer to the ethtool man page. +The latest release of ethtool can be found from +https://www.kernel.org/pub/software/network/ethtool/ - WoL will be enabled on the system during the next shut down or reboot. For - this driver version, in order to enable WoL, the e100 driver must be - loaded when shutting down or rebooting the system. +Enabling Wake on LAN* (WoL) +--------------------------- +WoL is provided through the ethtool* utility. For instructions on +enabling WoL with ethtool, refer to the ethtool man page. WoL will be +enabled on the system during the next shut down or reboot. For this +driver version, in order to enable WoL, the e100 driver must be loaded +when shutting down or rebooting the system. - NAPI - ---- +NAPI +---- - NAPI (Rx polling mode) is supported in the e100 driver. +NAPI (Rx polling mode) is supported in the e100 driver. - See https://wiki.linuxfoundation.org/networking/napi for more information - on NAPI. +See https://wiki.linuxfoundation.org/networking/napi for more +information on NAPI. - Multiple Interfaces on Same Ethernet Broadcast Network - ------------------------------------------------------ +Multiple Interfaces on Same Ethernet Broadcast Network +------------------------------------------------------ - Due to the default ARP behavior on Linux, it is not possible to have - one system on two IP networks in the same Ethernet broadcast domain - (non-partitioned switch) behave as expected. All Ethernet interfaces - will respond to IP traffic for any IP address assigned to the system. - This results in unbalanced receive traffic. +Due to the default ARP behavior on Linux, it is not possible to have one +system on two IP networks in the same Ethernet broadcast domain +(non-partitioned switch) behave as expected. All Ethernet interfaces +will respond to IP traffic for any IP address assigned to the system. +This results in unbalanced receive traffic. - If you have multiple interfaces in a server, either turn on ARP - filtering by +If you have multiple interfaces in a server, either turn on ARP +filtering by - (1) entering:: echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter - (this only works if your kernel's version is higher than 2.4.5), or +(1) entering:: echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter + (this only works if your kernel's version is higher than 2.4.5), or - (2) installing the interfaces in separate broadcast domains (either - in different switches or in a switch partitioned to VLANs). +(2) installing the interfaces in separate broadcast domains (either + in different switches or in a switch partitioned to VLANs). Support diff --git a/Documentation/networking/e1000.rst b/Documentation/networking/e1000.rst index 616848940e63..144b87eef153 100644 --- a/Documentation/networking/e1000.rst +++ b/Documentation/networking/e1000.rst @@ -1,3 +1,4 @@ +=========================================================== Linux* Base Driver for Intel(R) Ethernet Network Connection =========================================================== @@ -354,57 +355,58 @@ previously mentioned to force the adapter to the same speed and duplex. Additional Configurations ========================= - Jumbo Frames - ------------ - Jumbo Frames support is enabled by changing the MTU to a value larger than - the default of 1500. Use the ifconfig command to increase the MTU size. - For example:: +Jumbo Frames +------------ +Jumbo Frames support is enabled by changing the MTU to a value larger +than the default of 1500. Use the ifconfig command to increase the MTU +size. For example:: ifconfig eth<x> mtu 9000 up - This setting is not saved across reboots. It can be made permanent if - you add:: +This setting is not saved across reboots. It can be made permanent if +you add:: MTU=9000 - to the file /etc/sysconfig/network-scripts/ifcfg-eth<x>. This example - applies to the Red Hat distributions; other distributions may store this - setting in a different location. +to the file /etc/sysconfig/network-scripts/ifcfg-eth<x>. This example +applies to the Red Hat distributions; other distributions may store this +setting in a different location. + +Notes: Degradation in throughput performance may be observed in some +Jumbo frames environments. If this is observed, increasing the +application's socket buffer size and/or increasing the +/proc/sys/net/ipv4/tcp_*mem entry values may help. See the specific +application manual and /usr/src/linux*/Documentation/ +networking/ip-sysctl.txt for more details. - Notes: - Degradation in throughput performance may be observed in some Jumbo frames - environments. If this is observed, increasing the application's socket buffer - size and/or increasing the /proc/sys/net/ipv4/tcp_*mem entry values may help. - See the specific application manual and /usr/src/linux*/Documentation/ - networking/ip-sysctl.txt for more details. +- The maximum MTU setting for Jumbo Frames is 16110. This value + coincides with the maximum Jumbo Frames size of 16128. - - The maximum MTU setting for Jumbo Frames is 16110. This value coincides - with the maximum Jumbo Frames size of 16128. +- Using Jumbo frames at 10 or 100 Mbps is not supported and may result + in poor performance or loss of link. - - Using Jumbo frames at 10 or 100 Mbps is not supported and may result in - poor performance or loss of link. +- Adapters based on the Intel(R) 82542 and 82573V/E controller do not + support Jumbo Frames. These correspond to the following product names: + Intel(R) PRO/1000 Gigabit Server Adapter Intel(R) PRO/1000 PM Network + Connection - - Adapters based on the Intel(R) 82542 and 82573V/E controller do not - support Jumbo Frames. These correspond to the following product names: - Intel(R) PRO/1000 Gigabit Server Adapter - Intel(R) PRO/1000 PM Network Connection +ethtool +------- +The driver utilizes the ethtool interface for driver configuration and +diagnostics, as well as displaying statistical information. The ethtool +version 1.6 or later is required for this functionality. - ethtool - ------- - The driver utilizes the ethtool interface for driver configuration and - diagnostics, as well as displaying statistical information. The ethtool - version 1.6 or later is required for this functionality. +The latest release of ethtool can be found from +https://www.kernel.org/pub/software/network/ethtool/ - The latest release of ethtool can be found from - https://www.kernel.org/pub/software/network/ethtool/ +Enabling Wake on LAN* (WoL) +--------------------------- +WoL is configured through the ethtool* utility. - Enabling Wake on LAN* (WoL) - --------------------------- - WoL is configured through the ethtool* utility. +WoL will be enabled on the system during the next shut down or reboot. +For this driver version, in order to enable WoL, the e1000 driver must be +loaded when shutting down or rebooting the system. - WoL will be enabled on the system during the next shut down or reboot. - For this driver version, in order to enable WoL, the e1000 driver must be - loaded when shutting down or rebooting the system. Support ======= diff --git a/Documentation/networking/strparser.txt b/Documentation/networking/strparser.txt index 13081b3decef..a7d354ddda7b 100644 --- a/Documentation/networking/strparser.txt +++ b/Documentation/networking/strparser.txt @@ -48,7 +48,7 @@ void strp_pause(struct strparser *strp) Temporarily pause a stream parser. Message parsing is suspended and no new messages are delivered to the upper layer. -void strp_pause(struct strparser *strp) +void strp_unpause(struct strparser *strp) Unpause a paused stream parser. diff --git a/Documentation/trace/histogram.txt b/Documentation/trace/histogram.txt index e73bcf9cb5f3..7ffea6aa22e3 100644 --- a/Documentation/trace/histogram.txt +++ b/Documentation/trace/histogram.txt @@ -1729,35 +1729,35 @@ If a variable isn't a key variable or prefixed with 'vals=', the associated event field will be saved in a variable but won't be summed as a value: - # echo 'hist:keys=next_pid:ts1=common_timestamp ... >> event/trigger + # echo 'hist:keys=next_pid:ts1=common_timestamp ...' >> event/trigger Multiple variables can be assigned at the same time. The below would result in both ts0 and b being created as variables, with both common_timestamp and field1 additionally being summed as values: - # echo 'hist:keys=pid:vals=$ts0,$b:ts0=common_timestamp,b=field1 ... >> \ + # echo 'hist:keys=pid:vals=$ts0,$b:ts0=common_timestamp,b=field1 ...' >> \ event/trigger Note that variable assignments can appear either preceding or following their use. The command below behaves identically to the command above: - # echo 'hist:keys=pid:ts0=common_timestamp,b=field1:vals=$ts0,$b ... >> \ + # echo 'hist:keys=pid:ts0=common_timestamp,b=field1:vals=$ts0,$b ...' >> \ event/trigger Any number of variables not bound to a 'vals=' prefix can also be assigned by simply separating them with colons. Below is the same thing but without the values being summed in the histogram: - # echo 'hist:keys=pid:ts0=common_timestamp:b=field1 ... >> event/trigger + # echo 'hist:keys=pid:ts0=common_timestamp:b=field1 ...' >> event/trigger Variables set as above can be referenced and used in expressions on another event. For example, here's how a latency can be calculated: - # echo 'hist:keys=pid,prio:ts0=common_timestamp ... >> event1/trigger - # echo 'hist:keys=next_pid:wakeup_lat=common_timestamp-$ts0 ... >> event2/trigger + # echo 'hist:keys=pid,prio:ts0=common_timestamp ...' >> event1/trigger + # echo 'hist:keys=next_pid:wakeup_lat=common_timestamp-$ts0 ...' >> event2/trigger In the first line above, the event's timetamp is saved into the variable ts0. In the next line, ts0 is subtracted from the second @@ -1766,7 +1766,7 @@ yet another variable, 'wakeup_lat'. The hist trigger below in turn makes use of the wakeup_lat variable to compute a combined latency using the same key and variable from yet another event: - # echo 'hist:key=pid:wakeupswitch_lat=$wakeup_lat+$switchtime_lat ... >> event3/trigger + # echo 'hist:key=pid:wakeupswitch_lat=$wakeup_lat+$switchtime_lat ...' >> event3/trigger 2.2.2 Synthetic Events ---------------------- @@ -1807,10 +1807,11 @@ the command that defined it with a '!': At this point, there isn't yet an actual 'wakeup_latency' event instantiated in the event subsytem - for this to happen, a 'hist trigger action' needs to be instantiated and bound to actual fields -and variables defined on other events (see Section 6.3.3 below). +and variables defined on other events (see Section 2.2.3 below on +how that is done using hist trigger 'onmatch' action). Once that is +done, the 'wakeup_latency' synthetic event instance is created. -Once that is done, an event instance is created, and a histogram can -be defined using it: +A histogram can now be defined for the new synthetic event: # echo 'hist:keys=pid,prio,lat.log2:sort=pid,lat' >> \ /sys/kernel/debug/tracing/events/synthetic/wakeup_latency/trigger @@ -1960,7 +1961,7 @@ hist trigger specification. back to that pid, the timestamp difference is calculated. If the resulting latency, stored in wakeup_lat, exceeds the current maximum latency, the values specified in the save() fields are - recoreded: + recorded: # echo 'hist:keys=pid:ts0=common_timestamp.usecs \ if comm=="cyclictest"' >> \ diff --git a/Documentation/usb/gadget_configfs.txt b/Documentation/usb/gadget_configfs.txt index 635e57493709..b8cb38a98c19 100644 --- a/Documentation/usb/gadget_configfs.txt +++ b/Documentation/usb/gadget_configfs.txt @@ -226,7 +226,7 @@ $ rm configs/<config name>.<number>/<function> where <config name>.<number> specify the configuration and <function> is a symlink to a function being removed from the configuration, e.g.: -$ rm configfs/c.1/ncm.usb0 +$ rm configs/c.1/ncm.usb0 ... ... diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 495b7742ab58..d10944e619d3 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -4610,7 +4610,7 @@ This capability indicates that kvm will implement the interfaces to handle reset, migration and nested KVM for branch prediction blocking. The stfle facility 82 should not be provided to the guest without this capability. -8.14 KVM_CAP_HYPERV_TLBFLUSH +8.18 KVM_CAP_HYPERV_TLBFLUSH Architectures: x86 |