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2019-04-25SUNRPC: Fix up task signallingTrond Myklebust1-2/+4
The RPC_TASK_KILLED flag should really not be set from another context because it can clobber data in the struct task when task->tk_flags is changed non-atomically. Let's therefore swap out RPC_TASK_KILLED with an atomic flag, and add a function to set that flag and safely wake up the task. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25ext4: Support case-insensitive file name lookupsGabriel Krisman Bertazi1-0/+2
This patch implements the actual support for case-insensitive file name lookups in ext4, based on the feature bit and the encoding stored in the superblock. A filesystem that has the casefold feature set is able to configure directories with the +F (EXT4_CASEFOLD_FL) attribute, enabling lookups to succeed in that directory in a case-insensitive fashion, i.e: match a directory entry even if the name used by userspace is not a byte per byte match with the disk name, but is an equivalent case-insensitive version of the Unicode string. This operation is called a case-insensitive file name lookup. The feature is configured as an inode attribute applied to directories and inherited by its children. This attribute can only be enabled on empty directories for filesystems that support the encoding feature, thus preventing collision of file names that only differ by case. * dcache handling: For a +F directory, Ext4 only stores the first equivalent name dentry used in the dcache. This is done to prevent unintentional duplication of dentries in the dcache, while also allowing the VFS code to quickly find the right entry in the cache despite which equivalent string was used in a previous lookup, without having to resort to ->lookup(). d_hash() of casefolded directories is implemented as the hash of the casefolded string, such that we always have a well-known bucket for all the equivalencies of the same string. d_compare() uses the utf8_strncasecmp() infrastructure, which handles the comparison of equivalent, same case, names as well. For now, negative lookups are not inserted in the dcache, since they would need to be invalidated anyway, because we can't trust missing file dentries. This is bad for performance but requires some leveraging of the vfs layer to fix. We can live without that for now, and so does everyone else. * on-disk data: Despite using a specific version of the name as the internal representation within the dcache, the name stored and fetched from the disk is a byte-per-byte match with what the user requested, making this implementation 'name-preserving'. i.e. no actual information is lost when writing to storage. DX is supported by modifying the hashes used in +F directories to make them case/encoding-aware. The new disk hashes are calculated as the hash of the full casefolded string, instead of the string directly. This allows us to efficiently search for file names in the htree without requiring the user to provide an exact name. * Dealing with invalid sequences: By default, when a invalid UTF-8 sequence is identified, ext4 will treat it as an opaque byte sequence, ignoring the encoding and reverting to the old behavior for that unique file. This means that case-insensitive file name lookup will not work only for that file. An optional bit can be set in the superblock telling the filesystem code and userspace tools to enforce the encoding. When that optional bit is set, any attempt to create a file name using an invalid UTF-8 sequence will fail and return an error to userspace. * Normalization algorithm: The UTF-8 algorithms used to compare strings in ext4 is implemented lives in fs/unicode, and is based on a previous version developed by SGI. It implements the Canonical decomposition (NFD) algorithm described by the Unicode specification 12.1, or higher, combined with the elimination of ignorable code points (NFDi) and full case-folding (CF) as documented in fs/unicode/utf8_norm.c. NFD seems to be the best normalization method for EXT4 because: - It has a lower cost than NFC/NFKC (which requires decomposing to NFD as an intermediary step) - It doesn't eliminate important semantic meaning like compatibility decompositions. Although: - This implementation is not completely linguistic accurate, because different languages have conflicting rules, which would require the specialization of the filesystem to a given locale, which brings all sorts of problems for removable media and for users who use more than one language. Signed-off-by: Gabriel Krisman Bertazi <[email protected]> Signed-off-by: Theodore Ts'o <[email protected]>
2019-04-25clk: ti: dra7: disable the RNG and TIMER12 clkctrl clocks on HS devicesTero Kristo1-0/+1
RNG and TIMER12 are reserved for secure side usage only on HS devices, so disable their clkctrl clocks on HS SoCs also. Signed-off-by: Tero Kristo <[email protected]> Tested-by: Andrew F. Davis <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-04-25unicode: implement higher level API for string handlingGabriel Krisman Bertazi1-0/+30
This patch integrates the utf8n patches with some higher level API to perform UTF-8 string comparison, normalization and casefolding operations. Implemented is a variation of NFD, and casefold is performed by doing full casefold on top of NFD. These algorithms are based on the core implemented by Olaf Weber from SGI. Signed-off-by: Gabriel Krisman Bertazi <[email protected]> Signed-off-by: Theodore Ts'o <[email protected]>
2019-04-25clk: ti: export the omap2_clk_is_hw_omap callTero Kristo1-0/+1
There is one instance outside the TI clock driver that needs the info whether a clock is an OMAP HW clock or not. Thus, move the function declaration into the public header. Signed-off-by: Tero Kristo <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-04-25nvmem: core: add nvmem_cell_read_u16Fabrice Gasnier1-0/+7
Add nvmem_cell_read_u16() helper to ease read of an u16 value on consumer side. This is inspired by nvmem_cell_read_u32() function. This helper is useful on stm32 that has 16 bits data cells stored in non volatile memory. Signed-off-by: Fabrice Gasnier <[email protected]> Signed-off-by: Srinivas Kandagatla <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-04-25clk: Add missing stubs for a few functionsDmitry Osipenko1-0/+16
Compilation fails if any of undeclared clk_set_*() functions are in use and CONFIG_HAVE_CLK=n. Reported-by: kbuild test robot <[email protected]> Signed-off-by: Dmitry Osipenko <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-04-25nvme-rdma: fix typo in struct commentMinwoo Im1-1/+1
struct nvme_rdma_cm_rej has two different attributes: recfmt and sts. And sts will have value what this comment wanted to show. Signed-off-by: Minwoo Im <[email protected]> Reviewed-by: Sagi Grimberg <[email protected]> Reviewed-by: Chaitanya Kulkarni <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]>
2019-04-25Merge branch 'mlx5_tir_icm' into rdma.git for-nextJason Gunthorpe2-5/+49
Ariel Levkovich says: ==================== The series exposes the ICM address of the receive transport interface (TIR) of Raw Packet and RSS QPs to the user since they are required to properly create and insert steering rules that direct flows to these QPs. ==================== For dependencies this branch is based on mlx5-next from git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux * branch 'mlx5_tir_icm': IB/mlx5: Expose TIR ICM address to user space net/mlx5: Introduce new TIR creation core API net/mlx5: Expose TIR ICM address in command outbox Signed-off-by: Jason Gunthorpe <[email protected]>
2019-04-25afs: Add file locking tracepointsDavid Howells1-0/+1
Add two tracepoints for monitoring AFS file locking. Firstly, add one that follows the operational part: echo 1 >/sys/kernel/debug/tracing/events/afs/afs_flock_op/enable And add a second that more follows the event-driven part: echo 1 >/sys/kernel/debug/tracing/events/afs/afs_flock_ev/enable Individual file_lock structs seen by afs are tagged with debugging IDs that are displayed in the trace log to make it easier to see what's going on, especially as setting the first lock always seems to involve copying the file_lock twice. Signed-off-by: David Howells <[email protected]>
2019-04-25docs: serial: convert docs to ReST and rename to *.rstMauro Carvalho Chehab1-1/+1
The converted files are focused at the Kernel internal API, so, this is a good candidate for the kernel API set of books. The conversion is actually: - add blank lines and identation in order to identify paragraphs; - fix tables markups; - add some lists markups; - mark literal blocks; - adjust title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-04-25Merge tag 'hyperv-fixes-signed' of ↵Greg Kroah-Hartman1-1/+6
git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux into char-misc-linus Sasha writes: Three fixes: 1. Fix for a race condition in the hyper-v ringbuffer code by Kimberly Brown. 2. Fix to show monitor data only when monitor pages are actually allocated, also by Kimberly Brown. 3. Fix cpu reference counting in the vmbus code by Dexuan Cui. * tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: Drivers: hv: vmbus: Remove the undesired put_cpu_ptr() in hv_synic_cleanup() Drivers: hv: vmbus: Fix race condition with new ring_buffer_info mutex Drivers: hv: vmbus: Set ring_info field to 0 and remove memset Drivers: hv: vmbus: Refactor chan->state if statement Drivers: hv: vmbus: Expose monitor data only when monitor pages are used
2019-04-25usb/hcd: Send a uevent signaling that the host controller had diedRaul E Rangel1-0/+1
This change will send an OFFLINE event to udev with the ERROR=DEAD environment variable set when the HC dies. By notifying user space the appropriate policies can be applied. i.e., * Collect error logs. * Notify the user that USB is no longer functional. * Perform a graceful reboot. Reported-by: kbuild test robot <[email protected]> Signed-off-by: Raul E Rangel <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-04-25usb: typec: Add driver for NVIDIA Alt ModesAjay Gupta1-0/+5
Latest NVIDIA GPUs support VirtualLink device. Since USBIF has not assigned a Standard ID (SID) for VirtualLink so using NVIDA VID 0x955 as SVID. Signed-off-by: Ajay Gupta <[email protected]> Signed-off-by: Heikki Krogerus <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-04-25Merge tag 'iio-for-5.2b' of ↵Greg Kroah-Hartman1-1/+10
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: Second set of IIO new device support, features and cleanup for the 5.2 cycle. New device suport * ad7606 - Support the AD7616 16 channel, 12bit ADC. * fxas21002c - New driver for this gyroscope with I2C and SPI support. * lsm6dsx - Support the lsm6dsr, new device information structure and dt bindings. * srf04 - Addition device IDs for mb1000, mb1010, mb1020, mb1030 and mb1040 + support of different required trigger pulse lengths. * st-accel - Support the ls2de12, new device info and dt bindings. * ti-ads8344 - New driver for this 8 channel, 16 bit SPI ADC. Binding conversions to yaml - we have started doing these in general for IIO. * avia-hx711 * bmp085 Cleanups and minor fixes / additions * ad5758 - Fixup for some changes between preproduction parts and final part. * ad7606 - Refactor handling of oversampling to make it easy to vary between supported devices. * ad9832 - Organise includes. - Clock framework to handle clocks. * ad9834 - Drop unnecessary parenthesis. * bmc150 - Use __func__ rather than hardcoding. * dummy_evgen. - Fix a memleak on error in probe. * kxcjk1013 - Add KXCJ91008 ACPI ID as seen in the wild. - Use __func__ rather than hardcoding. * imx7d - Local dev variable to simplify code a bit. - dev_err replaces pr_err to give more info. - devm_platform_ioremap_resource for small reduction in boilerplate. - Simplify probe and remove by sharing suspend / resume logic. - Devm for iio_device_register as remove only contains the unregister. * lsm6dsx - Remove a variable that was never read. - Open code values where they are effectively described by what is assigned to them rather than using uninformative defines. * max31856 - Avoid an unintialized ret variable in a path that can't actually occur but is hard for a static checker to know. * max9611 - White space * mpu3050 - Reduce a sleep worst case by switching from msleep to usleep_range. * qcom-spmi-adc5 - Add MODULE_DEVICE_TABLE to assist autoloading of this as a module. * stm32-dfsdm - Fix missing dependencies. * stm32-timer trigger - Fix a build issue when disabled. * ti-ads7950 - Fix mising dependency on CONFIG_GPIOLIB. * tag 'iio-for-5.2b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (42 commits) iio: adc: qcom-spmi-adc5: Fix of-based module autoloading iio: dummy_evgen: fix possible memleak in evgen init iio:accel:Switch hardcoded function name with a reference to __func__ making the code more maintainable iio: adc: stm32-dfsdm: fix triggered buffer build dependency iio: adc: stm32-dfsdm: fix unmet direct dependencies detected iio: trigger: stm32-timer: fix build issue when disabled iio: imx7d_adc: Use devm_iio_device_register() iio: imx7d_adc: Simplify imx7d_adc_remove() with imx7d_adc_suspend() iio: imx7d_adc: Simplify imx7d_adc_probe() with imx7d_adc_resume() drivers/iio/gyro/mpu3050-core.c: This patch fix the following checkpatch warning. iio: dac: ad5758: Modifications for new revision iio: imu: st_lsm6dsx: inline per-sensor data iio: adc: Add driver for the TI ADS8344 A/DC chips dt-bindings: iio: adc: Add bindings for TI ADS8344 A/DC chips MAINTAINERS: add entry for fxas21002c gyro driver iio: gyro: fxas21002c: add spi driver iio: gyro: fxas21002c: add i2c driver iio: gyro: add core driver for fxas21002c iio: gyro: add DT bindings to fxas21002c Kconfig: change configuration of srf04 ultrasonic iio sensor ...
2019-04-25Merge tag 'phy-for-5.2' of ↵Greg Kroah-Hartman1-0/+2
git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next Kishon writes: phy: for 5.2 *) Add a new *release* phy_ops invoked when the consumer relinquishes PHY that can be used to undo the operation performed in xlate *) Add new driver to support USB2 PHY and shared USB3 + PCIE PHY in Amlogic G12A SoC Family. *) Add new driver to support for Broadcom's Stingray USB PHY (Type 1 has one super speed PHY and one high speed PHY, Type 2 has one high speed PHY) *) Add new driver to support USB PHY in hi3660 SoC of Hisilicon *) Add new driver to support UFS M-PHY in MediaTek SoC *) Add new driver to support XUSB pad controller in Tegra186 SoCs *) Add new driver to support SERDES in TI's AM654 platform *) Add support for generation 2 USB2 PHY and gneration 3 USB2 PHY in r8a77470 to phy-rcar-gen2.c and phy-rcar-gen3-usb2.c respectively *) Add support for PCIe QMP PHY support in msm8998 to phy-qcom-qmp.c *) Add support for SERDES6G in phy-ocelot-serdes.c *) Add support to set drive impedance from device tree in phy-rockchip-emmc.c *) Add support to power up/down the VBUS voltage rail in phy-fsl-imx8mq-usb.c *) Add support to shut off regulators that power UFS during system suspend *) Re-design phy-rcar-gen3-usb2.c to create separate PHY instances for each channel which helps to enable/disable interrupts for each instance independently *) Fix PCIe power up sequence to follow the TRM in order to ensure the DPLL & PHY operates correctly over the entire temperature range. *) Use devm_clk_get_optional to get optional clocks instead of adding custom error checks Signed-off-by: Kishon Vijay Abraham I <[email protected]> * tag 'phy-for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy: (51 commits) dt-bindings: phy-qcom-qmp: Tweak qcom,msm8998-qmp-ufs-phy dt-bindings: phy-qcom-qmp: Add qcom,msm8998-qmp-pcie-phy phy: Add usb phy support for hi3660 Soc of Hisilicon dt-bindings: phy: Add support for HiSilicon's hi3660 USB PHY scsi: phy: mediatek: fix typo in author's email address phy: ocelot-serdes: Add support for SERDES6G muxing phy: fsl-imx8mq-usb: add support for VBUS power control dt-bindings: phy-imx8mq-usb: add optional vbus supply regulator phy: qcom-qmp: Add msm8998 PCIe QMP PHY support phy: ti: am654-serdes: Support all clksel values phy: ti: Add a new SERDES driver for TI's AM654x SoC dt-bindings: phy: ti: Add dt binding documentation for SERDES in AM654x SoC phy: core: Invoke pm_runtime_get_*/pm_runtime_put_* before invoking reset callback phy: core: Add *release* phy_ops invoked when the consumer relinquishes PHY phy: phy-meson-gxl-usb2: get optional clock by devm_clk_get_optional() phy: socionext: get optional clock by devm_clk_get_optional() phy: qcom-qusb2: get optional clock by devm_clk_get_optional() phy: phy-mtk-tphy: get optional clock by devm_clk_get_optional() phy: renesas: rcar-gen3-usb2: enable/disable independent irqs phy: renesas: rcar-gen3-usb2: Use pdev's device pointer on dev_vdbg() ...
2019-04-25crypto: shash - remove shash_desc::flagsEric Biggers1-1/+0
The flags field in 'struct shash_desc' never actually does anything. The only ostensibly supported flag is CRYPTO_TFM_REQ_MAY_SLEEP. However, no shash algorithm ever sleeps, making this flag a no-op. With this being the case, inevitably some users who can't sleep wrongly pass MAY_SLEEP. These would all need to be fixed if any shash algorithm actually started sleeping. For example, the shash_ahash_*() functions, which wrap a shash algorithm with the ahash API, pass through MAY_SLEEP from the ahash API to the shash API. However, the shash functions are called under kmap_atomic(), so actually they're assumed to never sleep. Even if it turns out that some users do need preemption points while hashing large buffers, we could easily provide a helper function crypto_shash_update_large() which divides the data into smaller chunks and calls crypto_shash_update() and cond_resched() for each chunk. It's not necessary to have a flag in 'struct shash_desc', nor is it necessary to make individual shash algorithms aware of this at all. Therefore, remove shash_desc::flags, and document that the crypto_shash_*() functions can be called from any context. Signed-off-by: Eric Biggers <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
2019-04-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds1-0/+12
Pull networking fixes from David Miller: "Just the usual assortment of small'ish fixes: 1) Conntrack timeout is sometimes not initialized properly, from Alexander Potapenko. 2) Add a reasonable range limit to tcp_min_rtt_wlen to avoid undefined behavior. From ZhangXiaoxu. 3) des1 field of descriptor in stmmac driver is initialized with the wrong variable. From Yue Haibing. 4) Increase mlxsw pci sw reset timeout a little bit more, from Ido Schimmel. 5) Match IOT2000 stmmac devices more accurately, from Su Bao Cheng. 6) Fallback refcount fix in TLS code, from Jakub Kicinski. 7) Fix max MTU check when using XDP in mlx5, from Maxim Mikityanskiy. 8) Fix recursive locking in team driver, from Hangbin Liu. 9) Fix tls_set_device_offload_Rx() deadlock, from Jakub Kicinski. 10) Don't use napi_alloc_frag() outside of softiq context of socionext driver, from Ilias Apalodimas. 11) MAC address increment overflow in ncsi, from Tao Ren. 12) Fix a regression in 8K/1M pool switching of RDS, from Zhu Yanjun. 13) ipv4_link_failure has to validate the headers that are actually there because RAW sockets can pass in arbitrary garbage, from Eric Dumazet" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (43 commits) ipv4: add sanity checks in ipv4_link_failure() net/rose: fix unbound loop in rose_loopback_timer() rxrpc: fix race condition in rxrpc_input_packet() net: rds: exchange of 8K and 1M pool net: vrf: Fix operation not supported when set vrf mac net/ncsi: handle overflow when incrementing mac address net: socionext: replace napi_alloc_frag with the netdev variant on init net: atheros: fix spelling mistake "underun" -> "underrun" spi: ST ST95HF NFC: declare missing of table spi: Micrel eth switch: declare missing of table net: stmmac: move stmmac_check_ether_addr() to driver probe netfilter: fix nf_l4proto_log_invalid to log invalid packets netfilter: never get/set skb->tstamp netfilter: ebtables: CONFIG_COMPAT: drop a bogus WARN_ON Documentation: decnet: remove reference to CONFIG_DECNET_ROUTE_FWMARK dt-bindings: add an explanation for internal phy-mode net/tls: don't leak IV and record seq when offload fails net/tls: avoid potential deadlock in tls_set_device_offload_rx() selftests/net: correct the return value for run_afpackettests team: fix possible recursive locking when add slaves ...
2019-04-24net/mlx5: Introduce new TIR creation core APIAriel Levkovich1-0/+3
Introducing new TIR creation core API which allows caller to receive back from the call the full command outbox. This comes as a preparation for the next patch that will retrieve the TIR ICM address from the command outbox. Signed-off-by: Ariel Levkovich <[email protected]> Reviewed-by: Eli Cohen <[email protected]> Reviewed-by: Mark Bloch <[email protected]> Signed-off-by: Leon Romanovsky <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2019-04-24net/mlx5: Expose TIR ICM address in command outboxAriel Levkovich1-3/+3
Adding the TIR ICM address to the create_tir command outbox through which the device reports the ICM address of the newly created TIR. The TIR address can be used for direct attachment to a steering rule in SW managed steering mode. Signed-off-by: Ariel Levkovich <[email protected]> Reviewed-by: Eli Cohen <[email protected]> Reviewed-by: Mark Bloch <[email protected]> Signed-off-by: Leon Romanovsky <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2019-04-24net/mlx5: Expose SW ICM related device memory capabilitiesAriel Levkovich1-2/+43
Add SW ICM related fields to the device memory capabilities structure and sw ownership capability in flow table properties. The currently supported SW ICM types are steering and header modify and the changes exposes the device memory capabilities for each of these two types. SW ICM memory can be allocated by SW and then be accessed by RDMA operations for direct management of the HW packet handling tables. Signed-off-by: Ariel Levkovich <[email protected]> Reviewed-by: Eli Cohen <[email protected]> Reviewed-by: Mark Bloch <[email protected]> Signed-off-by: Leon Romanovsky <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2019-04-24Merge branch 'rdma_mmap' into rdma.git for-nextJason Gunthorpe34-112/+207
Jason Gunthorpe says: ==================== Upon review it turns out there are some long standing problems in BAR mapping area: * BAR pages intended for read-only can be switched to writable via mprotect. * Missing use of rdma_user_mmap_io for the mlx5 clock BAR page. * Disassociate causes SIGBUS when touching the pages. * CPU pages are being mapped through to the process via remap_pfn_range instead of the more appropriate vm_insert_page, causing weird behaviors during disassociation. This series adds the missing VM_* flag manipulation, adds faulting a zero page for disassociation and revises the CPU page mappings to use vm_insert_page. ==================== For dependencies this branch is based on for-rc from git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git * branch 'rdma_mmap': RDMA: Remove rdma_user_mmap_page RDMA/mlx5: Use get_zeroed_page() for clock_info RDMA/ucontext: Fix regression with disassociate RDMA/mlx5: Use rdma_user_map_io for mapping BAR pages RDMA/mlx5: Do not allow the user to write to the clock page Signed-off-by: Jason Gunthorpe <[email protected]>
2019-04-24RDMA/mlx5: Use get_zeroed_page() for clock_infoJason Gunthorpe1-1/+0
get_zeroed_page() returns a virtual address for the page which is better than allocating a struct page and doing a permanent kmap on it. Cc: [email protected] Signed-off-by: Jason Gunthorpe <[email protected]> Reviewed-by: Haggai Eran <[email protected]> Signed-off-by: Leon Romanovsky <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2019-04-24lockd: Pass the user cred from knfsd when starting the lockd serverTrond Myklebust1-1/+2
When starting up a new knfsd server, pass the user cred to the supporting lockd server. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2019-04-24SUNRPC: Cache the process user cred in the RPC server listenerTrond Myklebust2-2/+5
In order to be able to interpret uids and gids correctly in knfsd, we should cache the user namespace of the process that created the RPC server's listener. To do so, we refcount the credential of that process. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2019-04-24SUNRPC: Allow further customisation of RPC program registrationTrond Myklebust1-0/+15
Add a callback to allow customisation of the rpcbind registration. When clients have the ability to turn on and off version support, we want to allow them to also prevent registration of those versions with the rpc portmapper. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2019-04-24SUNRPC: Add a callback to initialise server requestsTrond Myklebust1-0/+16
Add a callback to help initialise server requests before they are processed. This will allow us to clean up the NFS server version support, and to make it container safe. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2019-04-24SUNRPC/nfs: Fix return value for nfs4_callback_compound()Trond Myklebust1-0/+2
RPC server procedures are normally expected to return a __be32 encoded status value of type 'enum rpc_accept_stat', however at least one function wants to return an authentication status of type 'enum rpc_auth_stat' in the case where authentication fails. This patch adds functionality to allow this. Fixes: a4e187d83d88 ("NFS: Don't drop CB requests with invalid principals") Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2019-04-24HID: input: make sure the wheel high resolution multiplier is setBenjamin Tissoires1-1/+1
Some old mice have a tendency to not accept the high resolution multiplier. They reply with a -EPIPE which was previously ignored. Force the call to resolution multiplier to be synchronous and actually check for the answer. If this fails, consider the mouse like a normal one. Fixes: 2dc702c991e377 ("HID: input: use the Resolution Multiplier for high-resolution scrolling") Link: https://bugzilla.redhat.com/show_bug.cgi?id=1700071 Reported-and-tested-by: James Feeney <[email protected]> Cc: [email protected] # v5.0+ Signed-off-by: Benjamin Tissoires <[email protected]>
2019-04-24smpboot: Place the __percpu annotation correctlySebastian Andrzej Siewior1-1/+1
The test robot reported a wrong assignment of a per-CPU variable which it detected by using sparse and sent a report. The assignment itself is correct. The annotation for sparse was wrong and hence the report. The first pointer is a "normal" pointer and points to the per-CPU memory area. That means that the __percpu annotation has to be moved. Move the __percpu annotation to pointer which points to the per-CPU area. This change affects only the sparse tool (and is ignored by the compiler). Reported-by: kbuild test robot <[email protected]> Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Paul E. McKenney <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Fixes: f97f8f06a49fe ("smpboot: Provide infrastructure for percpu hotplug threads") Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
2019-04-23net/ncsi: handle overflow when incrementing mac addressTao Ren1-0/+12
Previously BMC's MAC address is calculated by simply adding 1 to the last byte of network controller's MAC address, and it produces incorrect result when network controller's MAC address ends with 0xFF. The problem can be fixed by calling eth_addr_inc() function to increment MAC address; besides, the MAC address is also validated before assigning to BMC. Fixes: cb10c7c0dfd9 ("net/ncsi: Add NCSI Broadcom OEM command") Signed-off-by: Tao Ren <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Acked-by: Samuel Mendoza-Jonas <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-24Merge tag 'drm/tegra/for-5.2-rc1' of ↵Dave Airlie1-26/+87
git://anongit.freedesktop.org/tegra/linux into drm-next drm/tegra: Changes for v5.2-rc1 This contains a fix for the usage of shared resets that previously generated a WARN on boot. In addition, there's a fix for CPU cache maintenance of GEM buffers allocated using get_pages(). (airlied: contains a merge from a shared tegra tree) Signed-off-by: Dave Airlie <[email protected]> From: Thierry Reding <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-04-24Merge tag 'drm-misc-next-2019-04-18' of ↵Dave Airlie2-6/+22
git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for v5.2: UAPI Changes: - Document which feature flags belong to which command in virtio_gpu.h - Make the FB_DAMAGE_CLIPS available for atomic userspace only, it's useless for legacy. Cross-subsystem Changes: - Add device tree bindings for lg,acx467akm-7 panel and ST-Ericsson Multi Channel Display Engine MCDE - Add parameters to the device tree bindings for tfp410 - iommu/io-pgtable: Add ARM Mali midgard MMU page table format - dma-buf: Only do a 64-bits seqno compare when driver explicitly asks for it, else wraparound. - Use the 64-bits compare for dma-fence-chains Core Changes: - Make the fb conversion functions use __iomem dst. - Rename drm_client_add to drm_client_register - Move intel_fb_initial_config to core. - Add a drm_gem_objects_lookup helper - Add drm_gem_fence_array helpers, and use it in lima. - Add drm_format_helper.c to kerneldoc. Driver Changes: - Add panfrost driver for mali midgard/bitfrost. - Converts bochs to use the simple display type. - Small fixes to sun4i, tinydrm, ti-fp410. - Fid aspeed's Kconfig options. - Make some symbols/functions static in lima, sun4i and meson. - Add a driver for the lg,acx467akm-7 panel. Signed-off-by: Dave Airlie <[email protected]> From: Maarten Lankhorst <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-04-23Merge tag 'mlx5-updates-2019-04-22' of ↵David S. Miller2-0/+7
git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux Saeed Mahameed says: ==================== mlx5-updates-2019-04-22 This series includes updates to mlx5e driver RX data path and some significant XDP RX/TX improvements to overcome/mitigate HW and PCIE bottlenecks. From Tariq: 1) Some Enhancements in rq->flags 2) Stabilize RX packet rate (on Striding RQ) with multiple outstanding UMR posts In this patch, we add support for multiple outstanding UMR posts, to allow faster gap closure between consuming MPWQEs and reposting them back into the WQ. Performance test: As expected, huge improvement in large-scale (48 cores). xdp_redirect_map, 64B UDP multi-stream. Redirect from ConnectX-5 100Gbps to ConnectX-6 100Gbps. CPU: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz. Before: Unstable, 7 to 30 Mpps After: Stable, at 70.5 Mpps From Shay: 3) XDP, Inline small packets into the TX MPWQE in XDP xmit flow Upon high packet rate with multiple CPUs TX workloads, much of the HCA's resources are spent on prefetching TX descriptors, thus affecting transmission rates. This patch comes to mitigate this problem by moving some workload to the CPU and reducing the HW data prefetch overhead for small packets (<= 256B). When forwarding packets with XDP, a packet that is smaller than a certain size (set to ~256 bytes) would be sent inline within its WQE TX descrptor (mem-copied), when the hardware tx queue is congested beyond a pre-defined water-mark. Performance: Tested packet rate for UDP 64Byte multi-stream over two dual port ConnectX-5 100Gbps NICs. CPU: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz * Tested with hyper-threading disabled XDP_TX: | | before | after | | | 24 rings | 51Mpps | 116Mpps | +126% | | 1 ring | 12Mpps | 12Mpps | same | XDP_REDIRECT: ** Below is the transmit rate, not the redirection rate which might be larger, and is not affected by this patch. | | before | after | | | 32 rings | 64Mpps | 92Mpps | +43% | | 1 ring | 6.4Mpps | 6.4Mpps | same | As we can see, feature significantly improves scaling, without hurting single ring performance. From Maxim: 4) Some trivial refactoring and code improvements prior to a larger series to support AF_XDP. ==================== Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-23PCI/ACPI: Advertise _HPX Type 3 support via _OSCAlexandru Gagniuc1-1/+2
_OSC now has a way to inform firmware that OS has the capability to interpret _HPX Type 3 setting records. This was added by the following PCI Firmware Specification ECN: ECN: _HPX and PCIe Completion Timeout related _OSC Enhancements Date: September 12, 2018 Affected Document: PCI Firmware Specification, Rev. 3.2 Signed-off-by: Alexandru Gagniuc <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]>
2019-04-23PCI/ACPI: Implement _HPX Type 3 Setting RecordAlexandru Gagniuc1-0/+48
The _HPX Type 3 Setting Record is intended to be more generic and allow configuration of settings not possible with Type 2 records. For example, firmware could ensure that the completion timeout value is set accordingly throughout the PCI tree. Implement support for _HPX Type 3 Setting Records, which were added in the ACPI 6.3 spec. Link: https://lore.kernel.org/lkml/[email protected] Signed-off-by: Alexandru Gagniuc <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]>
2019-04-23PCI/ACPI: Remove the need for 'struct hotplug_params'Alexandru Gagniuc1-10/+8
We used to first parse all the _HPP and _HPX tables before using the information to program registers of PCIe devices. Up through HPX Type 2, there was only one structure of each type, so we could cheat and store it on the stack. With HPX Type 3 we get an arbitrary number of entries, so the above model doesn't scale that well. Instead of parsing all tables at once, parse and program each entry separately. For _HPP and _HPX Types 0 through 2, this is functionally equivalent. The change enables the upcoming _HPX Type 3 to integrate more easily. Link: https://lore.kernel.org/lkml/[email protected] Signed-off-by: Alexandru Gagniuc <[email protected]> [bhelgaas: fix build errors] Signed-off-by: Bjorn Helgaas <[email protected]>
2019-04-23net/mlx5e: XDP, Inline small packets into the TX MPWQE in XDP xmit flowShay Agroskin1-0/+1
Upon high packet rate with multiple CPUs TX workloads, much of the HCA's resources are spent on prefetching TX descriptors, thus affecting transmission rates. This patch comes to mitigate this problem by moving some workload to the CPU and reducing the HW data prefetch overhead for small packets (<= 256B). When forwarding packets with XDP, a packet that is smaller than a certain size (set to ~256 bytes) would be sent inline within its WQE TX descrptor (mem-copied), when the hardware tx queue is congested beyond a pre-defined water-mark. This is added to better utilize the HW resources (which now makes one less packet data prefetch) and allow better scalability, on the account of CPU usage (which now 'memcpy's the packet into the WQE). To load balance between HW and CPU and get max packet rate, we use watermarks to detect how much the HW is congested and move the work loads back and forth between HW and CPU. Performance: Tested packet rate for UDP 64Byte multi-stream over two dual port ConnectX-5 100Gbps NICs. CPU: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz * Tested with hyper-threading disabled XDP_TX: | | before | after | | | 24 rings | 51Mpps | 116Mpps | +126% | | 1 ring | 12Mpps | 12Mpps | same | XDP_REDIRECT: ** Below is the transmit rate, not the redirection rate which might be larger, and is not affected by this patch. | | before | after | | | 32 rings | 64Mpps | 92Mpps | +43% | | 1 ring | 6.4Mpps | 6.4Mpps | same | As we can see, feature significantly improves scaling, without hurting single ring performance. Signed-off-by: Shay Agroskin <[email protected]> Signed-off-by: Tariq Toukan <[email protected]> Signed-off-by: Saeed Mahameed <[email protected]>
2019-04-23Merge branch 'mlx5-next' of ↵Saeed Mahameed1-0/+6
git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux
2019-04-23clk: core: replace clk_{readl,writel} with {readl,writel}Jonas Gorski1-15/+0
Now that clk_{readl,writel} is just an alias for {readl,writel}, we can switch all users of clk_* to use the accessors directly and remove the helpers. Signed-off-by: Jonas Gorski <[email protected]> [[email protected]: Also convert renesas file so that this can be compile independently] Signed-off-by: Stephen Boyd <[email protected]>
2019-04-23clk: core: remove powerpc special handlingJonas Gorski1-16/+0
Now that the powerpc clocks are properly marked as big endian, we can remove the special handling for PowerPC. Signed-off-by: Jonas Gorski <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-04-23clk: mux: add explicit big endian supportJonas Gorski1-0/+4
Add a clock specific flag to switch register accesses to big endian, to allow runtime configuration of big endian mux clocks. Signed-off-by: Jonas Gorski <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-04-23clk: multiplier: add explicit big endian supportJonas Gorski1-0/+4
Add a clock specific flag to switch register accesses to big endian, to allow runtime configuration of big endian multiplier clocks. Signed-off-by: Jonas Gorski <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-04-23clk: gate: add explicit big endian supportJonas Gorski1-0/+4
Add a clock specific flag to switch register accesses to big endian, to allow runtime configuration of big endian gated clocks. Signed-off-by: Jonas Gorski <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-04-23clk: fractional-divider: add explicit big endian supportJonas Gorski1-0/+4
Add a clock specific flag to switch register accesses to big endian, to allow runtime configuration of big endian fractional divider clocks. Signed-off-by: Jonas Gorski <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-04-23clk: divider: add explicit big endian supportJonas Gorski1-0/+4
Add a clock specific flag to switch register accesses to big endian, to allow runtime configuration of big endian divider clocks. Signed-off-by: Jonas Gorski <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-04-23net: phy: marvell: add new default led configure for m88e151xJian Shen1-0/+1
The default m88e151x LED configuration is 0x1177, used LED[0] for 1000M link, LED[1] for 100M link, and LED[2] for active. But for some boards, which use LED[0] for link, and LED[1] for active, prefer to be 0x1040. To be compatible with this case, this patch defines a new dev_flag, and set it before connect phy in HNS3 driver. When phy initializing, using the new LED configuration if this dev_flag is set. Signed-off-by: Jian Shen <[email protected]> Signed-off-by: Huazhong Tan <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-04-23net: pass net_device argument to the eth_get_headlenStanislav Fomichev1-1/+1
Update all users of eth_get_headlen to pass network device, fetch network namespace from it and pass it down to the flow dissector. This commit is a noop until administrator inserts BPF flow dissector program. Cc: Maxim Krasnyansky <[email protected]> Cc: Saeed Mahameed <[email protected]> Cc: Jeff Kirsher <[email protected]> Cc: [email protected] Cc: Yisen Zhuang <[email protected]> Cc: Salil Mehta <[email protected]> Cc: Michael Chan <[email protected]> Cc: Igor Russkikh <[email protected]> Signed-off-by: Stanislav Fomichev <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2019-04-23flow_dissector: handle no-skb use caseStanislav Fomichev1-5/+0
When called without skb, gather all required data from the __skb_flow_dissect's arguments and use recently introduces no-skb mode of bpf flow dissector. Note: WARN_ON_ONCE(!net) will now trigger for eth_get_headlen users. Signed-off-by: Stanislav Fomichev <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2019-04-23net: plumb network namespace into __skb_flow_dissectStanislav Fomichev1-8/+11
This new argument will be used in the next patches for the eth_get_headlen use case. eth_get_headlen calls flow dissector with only data (without skb) so there is currently no way to pull attached BPF flow dissector program. With this new argument, we can amend the callers to explicitly pass network namespace so we can use attached BPF program. Signed-off-by: Stanislav Fomichev <[email protected]> Reviewed-by: Saeed Mahameed <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
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