129 Commits

Author	SHA1	Message	Date
Greg Kroah-Hartman	8fd5b33ea5	Merge 5.15.61 into android13-5.15-lts ... Changes in 5.15.61 Makefile: link with -z noexecstack --no-warn-rwx-segments x86: link vdso and boot with -z noexecstack --no-warn-rwx-segments Revert "pNFS: nfs3_set_ds_client should set NFS_CS_NOPING" scsi: Revert "scsi: qla2xxx: Fix disk failure to rediscover" pNFS/flexfiles: Report RDMA connection errors to the server NFSD: Clean up the show_nf_flags() macro nfsd: eliminate the NFSD_FILE_BREAK_* flags ALSA: usb-audio: Add quirk for Behringer UMC202HD ALSA: bcd2000: Fix a UAF bug on the error path of probing ALSA: hda/realtek: Add quirk for Clevo NV45PZ ALSA: hda/realtek: Add quirk for HP Spectre x360 15-eb0xxx wifi: mac80211_hwsim: fix race condition in pending packet wifi: mac80211_hwsim: add back erroneously removed cast wifi: mac80211_hwsim: use 32-bit skb cookie add barriers to buffer_uptodate and set_buffer_uptodate lockd: detect and reject lock arguments that overflow HID: hid-input: add Surface Go battery quirk HID: wacom: Only report rotation for art pen HID: wacom: Don't register pad_input for touch switch KVM: nVMX: Snapshot pre-VM-Enter BNDCFGS for !nested_run_pending case KVM: nVMX: Snapshot pre-VM-Enter DEBUGCTL for !nested_run_pending case KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0 KVM: s390: pv: don't present the ecall interrupt twice KVM: x86: Split kvm_is_valid_cr4() and export only the non-vendor bits KVM: nVMX: Let userspace set nVMX MSR to any _host_ supported value KVM: nVMX: Account for KVM reserved CR4 bits in consistency checks KVM: nVMX: Inject #UD if VMXON is attempted with incompatible CR0/CR4 KVM: x86: Mark TSS busy during LTR emulation _after_ all fault checks KVM: x86: Set error code to segment selector on LLDT/LTR non-canonical #GP KVM: nVMX: Always enable TSC scaling for L2 when it was enabled for L1 KVM: x86: Tag kvm_mmu_x86_module_init() with __init KVM: x86: do not report preemption if the steal time cache is stale KVM: x86: revalidate steal time cache if MSR value changes riscv: set default pm_power_off to NULL ALSA: hda/conexant: Add quirk for LENOVO 20149 Notebook model ALSA: hda/cirrus - support for iMac 12,1 model ALSA: hda/realtek: Add quirk for another Asus K42JZ model ALSA: hda/realtek: Add a quirk for HP OMEN 15 (8786) mute LED tty: vt: initialize unicode screen buffer vfs: Check the truncate maximum size in inode_newsize_ok() fs: Add missing umask strip in vfs_tmpfile thermal: sysfs: Fix cooling_device_stats_setup() error code path fbcon: Fix boundary checks for fbcon=vc:n1-n2 parameters fbcon: Fix accelerated fbdev scrolling while logo is still shown usbnet: Fix linkwatch use-after-free on disconnect fix short copy handling in copy_mc_pipe_to_iter() crypto: ccp - Use kzalloc for sev ioctl interfaces to prevent kernel memory leak ovl: drop WARN_ON() dentry is NULL in ovl_encode_fh() parisc: Fix device names in /proc/iomem parisc: Drop pa_swapper_pg_lock spinlock parisc: Check the return value of ioremap() in lba_driver_probe() parisc: io_pgetevents_time64() needs compat syscall in 32-bit compat mode riscv:uprobe fix SR_SPIE set/clear handling dt-bindings: riscv: fix SiFive l2-cache's cache-sets RISC-V: kexec: Fixup use of smp_processor_id() in preemptible context RISC-V: Fixup get incorrect user mode PC for kernel mode regs RISC-V: Fixup schedule out issue in machine_crash_shutdown() RISC-V: Add modules to virtual kernel memory layout dump rtc: rx8025: fix 12/24 hour mode detection on RX-8035 drm/gem: Properly annotate WW context on drm_gem_lock_reservations() error drm/shmem-helper: Add missing vunmap on error drm/vc4: hdmi: Disable audio if dmas property is present but empty drm/hyperv-drm: Include framebuffer and EDID headers drm/nouveau: fix another off-by-one in nvbios_addr drm/nouveau: Don't pm_runtime_put_sync(), only pm_runtime_put_autosuspend() drm/nouveau/acpi: Don't print error when we get -EINPROGRESS from pm_runtime drm/nouveau/kms: Fix failure path for creating DP connectors drm/amdgpu: Check BO's requested pinning domains against its preferred_domains drm/amdgpu: fix check in fbdev init bpf: Fix KASAN use-after-free Read in compute_effective_progs btrfs: reject log replay if there is unsupported RO compat flag mtd: rawnand: arasan: Fix clock rate in NV-DDR mtd: rawnand: arasan: Update NAND bus clock instead of system clock um: Remove straying parenthesis um: seed rng using host OS rng iio: fix iio_format_avail_range() printing for none IIO_VAL_INT iio: light: isl29028: Fix the warning in isl29028_remove() scsi: sg: Allow waiting for commands to complete on removed device scsi: qla2xxx: Fix incorrect display of max frame size scsi: qla2xxx: Zero undefined mailbox IN registers soundwire: qcom: Check device status before reading devid ksmbd: fix memory leak in smb2_handle_negotiate ksmbd: prevent out of bound read for SMB2_TREE_CONNNECT ksmbd: fix use-after-free bug in smb2_tree_disconect fuse: limit nsec fuse: ioctl: translate ENOSYS serial: mvebu-uart: uart2 error bits clearing md-raid: destroy the bitmap after destroying the thread md-raid10: fix KASAN warning mbcache: don't reclaim used entries mbcache: add functions to delete entry if unused media: [PATCH] pci: atomisp_cmd: fix three missing checks on list iterator ia64, processor: fix -Wincompatible-pointer-types in ia64_get_irr() PCI: Add defines for normal and subtractive PCI bridges powerpc/fsl-pci: Fix Class Code of PCIe Root Port powerpc/ptdump: Fix display of RW pages on FSL_BOOK3E powerpc/powernv: Avoid crashing if rng is NULL MIPS: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK coresight: Clear the connection field properly usb: typec: ucsi: Acknowledge the GET_ERROR_STATUS command completion USB: HCD: Fix URB giveback issue in tasklet function ARM: dts: uniphier: Fix USB interrupts for PXs2 SoC arm64: dts: uniphier: Fix USB interrupts for PXs3 SoC usb: dwc3: gadget: refactor dwc3_repare_one_trb usb: dwc3: gadget: fix high speed multiplier setting netfilter: nf_tables: do not allow SET_ID to refer to another table netfilter: nf_tables: do not allow CHAIN_ID to refer to another table netfilter: nf_tables: do not allow RULE_ID to refer to another chain netfilter: nf_tables: fix null deref due to zeroed list head epoll: autoremove wakers even more aggressively x86: Handle idle=nomwait cmdline properly for x86_idle arch: make TRACE_IRQFLAGS_NMI_SUPPORT generic arm64: Do not forget syscall when starting a new thread. arm64: fix oops in concurrently setting insn_emulation sysctls arm64: kasan: Revert "arm64: mte: reset the page tag in page->flags" ext2: Add more validity checks for inode counts sched/fair: Introduce SIS_UTIL to search idle CPU based on sum of util_avg genirq: Don't return error on missing optional irq_request_resources() irqchip/mips-gic: Only register IPI domain when SMP is enabled genirq: GENERIC_IRQ_IPI depends on SMP sched/core: Always flush pending blk_plug irqchip/mips-gic: Check the return value of ioremap() in gic_of_init() wait: Fix __wait_event_hrtimeout for RT/DL tasks ARM: dts: imx6ul: add missing properties for sram ARM: dts: imx6ul: change operating-points to uint32-matrix ARM: dts: imx6ul: fix keypad compatible ARM: dts: imx6ul: fix csi node compatible ARM: dts: imx6ul: fix lcdif node compatible ARM: dts: imx6ul: fix qspi node compatible ARM: dts: BCM5301X: Add DT for Meraki MR26 ARM: dts: ux500: Fix Codina accelerometer mounting matrix ARM: dts: ux500: Fix Gavini accelerometer mounting matrix spi: synquacer: Add missing clk_disable_unprepare() ARM: OMAP2+: display: Fix refcount leak bug ARM: OMAP2+: pdata-quirks: Fix refcount leak bug ACPI: EC: Remove duplicate ThinkPad X1 Carbon 6th entry from DMI quirks ACPI: EC: Drop the EC_FLAGS_IGNORE_DSDT_GPE quirk ACPI: PM: save NVS memory for Lenovo G40-45 ACPI: LPSS: Fix missing check in register_device_clock() ARM: dts: qcom: sdx55: Fix the IRQ trigger type for UART arm64: dts: qcom: ipq8074: fix NAND node name arm64: dts: allwinner: a64: orangepi-win: Fix LED node name ARM: shmobile: rcar-gen2: Increase refcount for new reference firmware: tegra: Fix error check return value of debugfs_create_file() hwmon: (dell-smm) Add Dell XPS 13 7390 to fan control whitelist hwmon: (sht15) Fix wrong assumptions in device remove callback PM: hibernate: defer device probing when resuming from hibernation selinux: fix memleak in security_read_state_kernel() selinux: Add boundary check in put_entry() kasan: test: Silence GCC 12 warnings drm/amdgpu: Remove one duplicated ef removal powerpc/64s: Disable stack variable initialisation for prom_init spi: spi-rspi: Fix PIO fallback on RZ platforms ARM: findbit: fix overflowing offset meson-mx-socinfo: Fix refcount leak in meson_mx_socinfo_init arm64: dts: renesas: beacon: Fix regulator node names spi: spi-altera-dfl: Fix an error handling path ARM: bcm: Fix refcount leak in bcm_kona_smc_init ACPI: processor/idle: Annotate more functions to live in cpuidle section ARM: dts: imx7d-colibri-emmc: add cpu1 supply soc: renesas: r8a779a0-sysc: Fix A2DP1 and A2CV[2357] PDR values scsi: hisi_sas: Use managed PCI functions dt-bindings: iio: accel: Add DT binding doc for ADXL355 soc: amlogic: Fix refcount leak in meson-secure-pwrc.c arm64: dts: renesas: Fix thermal-sensors on single-zone sensors x86/pmem: Fix platform-device leak in error path ARM: dts: ast2500-evb: fix board compatible ARM: dts: ast2600-evb: fix board compatible ARM: dts: ast2600-evb-a1: fix board compatible arm64: dts: mt8192: Fix idle-states nodes naming scheme arm64: dts: mt8192: Fix idle-states entry-method arm64: select TRACE_IRQFLAGS_NMI_SUPPORT arm64: cpufeature: Allow different PMU versions in ID_DFR0_EL1 locking/lockdep: Fix lockdep_init_map_*() confusion arm64: dts: qcom: sc7180: Remove ipa_fw_mem node on trogdor soc: fsl: guts: machine variable might be unset block: fix infinite loop for invalid zone append ARM: dts: qcom: mdm9615: add missing PMIC GPIO reg ARM: OMAP2+: Fix refcount leak in omapdss_init_of ARM: OMAP2+: Fix refcount leak in omap3xxx_prm_late_init arm64: dts: qcom: sdm630: disable GPU by default arm64: dts: qcom: sdm630: fix the qusb2phy ref clock arm64: dts: qcom: sdm630: fix gpu's interconnect path arm64: dts: qcom: sdm636-sony-xperia-ganges-mermaid: correct sdc2 pinconf cpufreq: zynq: Fix refcount leak in zynq_get_revision regulator: qcom_smd: Fix pm8916_pldo range ACPI: APEI: Fix _EINJ vs EFI_MEMORY_SP ARM: dts: qcom-msm8974: fix irq type on blsp2_uart1 soc: qcom: ocmem: Fix refcount leak in of_get_ocmem soc: qcom: aoss: Fix refcount leak in qmp_cooling_devices_register ARM: dts: qcom: pm8841: add required thermal-sensor-cells bus: hisi_lpc: fix missing platform_device_put() in hisi_lpc_acpi_probe() stack: Declare {randomize_,}kstack_offset to fix Sparse warnings arm64: dts: qcom: msm8916: Fix typo in pronto remoteproc node ACPI: APEI: explicit init of HEST and GHES in apci_init() drivers/iio: Remove all strcpy() uses ACPI: VIOT: Fix ACS setup arm64: dts: qcom: sm6125: Move sdc2 pinctrl from seine-pdx201 to sm6125 arm64: dts: qcom: sm6125: Append -state suffix to pinctrl nodes arm64: dts: qcom: sm8250: add missing PCIe PHY clock-cells arm64: dts: mt7622: fix BPI-R64 WPS button arm64: tegra: Fixup SYSRAM references arm64: tegra: Update Tegra234 BPMP channel addresses arm64: tegra: Mark BPMP channels as no-memory-wc arm64: tegra: Fix SDMMC1 CD on P2888 erofs: avoid consecutive detection for Highmem memory blk-mq: don't create hctx debugfs dir until q->debugfs_dir is created spi: Fix simplification of devm_spi_register_controller spi: tegra20-slink: fix UAF in tegra_slink_remove() hwmon: (drivetemp) Add module alias blktrace: Trace remapped requests correctly PM: domains: Ensure genpd_debugfs_dir exists before remove dm writecache: return void from functions dm writecache: count number of blocks read, not number of read bios dm writecache: count number of blocks written, not number of write bios dm writecache: count number of blocks discarded, not number of discard bios regulator: of: Fix refcount leak bug in of_get_regulation_constraints() soc: qcom: Make QCOM_RPMPD depend on PM arm64: dts: qcom: qcs404: Fix incorrect USB2 PHYs assignment irqdomain: Report irq number for NOMAP domains drivers/perf: arm_spe: Fix consistency of SYS_PMSCR_EL1.CX nohz/full, sched/rt: Fix missed tick-reenabling bug in dequeue_task_rt() x86/extable: Fix ex_handler_msr() print condition selftests/seccomp: Fix compile warning when CC=clang thermal/tools/tmon: Include pthread and time headers in tmon.h dm: return early from dm_pr_call() if DM device is suspended pwm: sifive: Simplify offset calculation for PWMCMP registers pwm: sifive: Ensure the clk is enabled exactly once per running PWM pwm: sifive: Shut down hardware only after pwmchip_remove() completed pwm: lpc18xx-sct: Reduce number of devm memory allocations pwm: lpc18xx-sct: Simplify driver by not using pwm_[gs]et_chip_data() pwm: lpc18xx: Fix period handling drm/dp: Export symbol / kerneldoc fixes for DP AUX bus drm/bridge: tc358767: Move (e)DP bridge endpoint parsing into dedicated function ath10k: do not enforce interrupt trigger type drm/st7735r: Fix module autoloading for Okaya RH128128T drm/panel: Fix build error when CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20=y && CONFIG_DRM_DISPLAY_HELPER=m wifi: rtlwifi: fix error codes in rtl_debugfs_set_write_h2c() ath11k: fix netdev open race drm/mipi-dbi: align max_chunk to 2 in spi_transfer ath11k: Fix incorrect debug_mask mappings drm/radeon: fix potential buffer overflow in ni_set_mc_special_registers() drm/mediatek: Modify dsi funcs to atomic operations drm/mediatek: Separate poweron/poweroff from enable/disable and define new funcs drm/mediatek: Add pull-down MIPI operation in mtk_dsi_poweroff function drm/meson: encoder_hdmi: switch to bridge DRM_BRIDGE_ATTACH_NO_CONNECTOR drm/meson: encoder_hdmi: Fix refcount leak in meson_encoder_hdmi_init drm/bridge: lt9611uxc: Cancel only driver's work i2c: npcm: Remove own slave addresses 2:10 i2c: npcm: Correct slave role behavior i2c: mxs: Silence a clang warning virtio-gpu: fix a missing check to avoid NULL dereference drm/shmem-helper: Unexport drm_gem_shmem_create_with_handle() drm/shmem-helper: Export dedicated wrappers for GEM object functions drm/shmem-helper: Pass GEM shmem object in public interfaces drm/virtio: Fix NULL vs IS_ERR checking in virtio_gpu_object_shmem_init drm: adv7511: override i2c address of cec before accessing it crypto: sun8i-ss - do not allocate memory when handling hash requests crypto: sun8i-ss - fix error codes in allocate_flows() net: fix sk_wmem_schedule() and sk_rmem_schedule() errors can: netlink: allow configuring of fixed bit rates without need for do_set_bittiming callback can: netlink: allow configuring of fixed data bit rates without need for do_set_data_bittiming callback i2c: Fix a potential use after free crypto: sun8i-ss - fix infinite loop in sun8i_ss_setup_ivs() media: atmel: atmel-sama7g5-isc: fix warning in configs without OF media: tw686x: Register the irq at the end of probe media: imx-jpeg: Correct some definition according specification media: imx-jpeg: Leave a blank space before the configuration data media: imx-jpeg: Add pm-runtime support for imx-jpeg media: imx-jpeg: use NV12M to represent non contiguous NV12 media: imx-jpeg: Set V4L2_BUF_FLAG_LAST at eos media: imx-jpeg: Refactor function mxc_jpeg_parse media: imx-jpeg: Identify and handle precision correctly media: imx-jpeg: Handle source change in a function media: imx-jpeg: Support dynamic resolution change media: imx-jpeg: Align upwards buffer size media: imx-jpeg: Implement drain using v4l2-mem2mem helpers ath9k: fix use-after-free in ath9k_hif_usb_rx_cb wifi: iwlegacy: 4965: fix potential off-by-one overflow in il4965_rs_fill_link_cmd() drm/radeon: fix incorrrect SPDX-License-Identifiers rcutorture: Warn on individual rcu_torture_init() error conditions rcutorture: Don't cpuhp_remove_state() if cpuhp_setup_state() failed rcutorture: Fix ksoftirqd boosting timing and iteration test_bpf: fix incorrect netdev features crypto: ccp - During shutdown, check SEV data pointer before using drm: bridge: adv7511: Add check for mipi_dsi_driver_register media: imx-jpeg: Disable slot interrupt when frame done drm/mcde: Fix refcount leak in mcde_dsi_bind media: hdpvr: fix error value returns in hdpvr_read media: v4l2-mem2mem: prevent pollerr when last_buffer_dequeued is set media: driver/nxp/imx-jpeg: fix a unexpected return value problem media: tw686x: Fix memory leak in tw686x_video_init drm/vc4: plane: Remove subpixel positioning check drm/vc4: plane: Fix margin calculations for the right/bottom edges drm/bridge: Add a function to abstract away panels drm/vc4: dsi: Switch to devm_drm_of_get_bridge drm/vc4: Use of_device_get_match_data() drm/vc4: dsi: Release workaround buffer and DMA drm/vc4: dsi: Correct DSI divider calculations drm/vc4: dsi: Correct pixel order for DSI0 drm/vc4: dsi: Register dsi0 as the correct vc4 encoder type drm/vc4: dsi: Fix dsi0 interrupt support drm/vc4: dsi: Add correct stop condition to vc4_dsi_encoder_disable iteration drm/vc4: hdmi: Fix HPD GPIO detection drm/vc4: hdmi: Avoid full hdmi audio fifo writes drm/vc4: hdmi: Reset HDMI MISC_CONTROL register drm/vc4: hdmi: Fix timings for interlaced modes drm/vc4: hdmi: Correct HDMI timing registers for interlaced modes crypto: arm64/gcm - Select AEAD for GHASH_ARM64_CE selftests/xsk: Destroy BPF resources only when ctx refcount drops to 0 drm/rockchip: vop: Don't crash for invalid duplicate_state() drm/rockchip: Fix an error handling path rockchip_dp_probe() drm/mediatek: dpi: Remove output format of YUV drm/mediatek: dpi: Only enable dpi after the bridge is enabled drm: bridge: sii8620: fix possible off-by-one hinic: Use the bitmap API when applicable net: hinic: fix bug that ethtool get wrong stats net: hinic: avoid kernel hung in hinic_get_stats64() drm/msm/mdp5: Fix global state lock backoff crypto: hisilicon/sec - don't sleep when in softirq crypto: hisilicon - Kunpeng916 crypto driver don't sleep when in softirq media: platform: mtk-mdp: Fix mdp_ipi_comm structure alignment drm/msm: Avoid dirtyfb stalls on video mode displays (v2) drm/msm/dpu: Fix for non-visible planes mt76: mt76x02u: fix possible memory leak in __mt76x02u_mcu_send_msg mt76: mt7615: do not update pm stats in case of error ieee80211: add EHT 1K aggregation definitions mt76: mt7921: fix aggregation subframes setting to HE max mt76: mt7921: enlarge maximum VHT MPDU length to 11454 mediatek: mt76: mac80211: Fix missing of_node_put() in mt76_led_init() mediatek: mt76: eeprom: fix missing of_node_put() in mt76_find_power_limits_node() skmsg: Fix invalid last sg check in sk_msg_recvmsg() drm/exynos/exynos7_drm_decon: free resources when clk_set_parent() failed. tcp: make retransmitted SKB fit into the send window libbpf: Fix the name of a reused map selftests: timers: valid-adjtimex: build fix for newer toolchains selftests: timers: clocksource-switch: fix passing errors from child bpf: Fix subprog names in stack traces. fs: check FMODE_LSEEK to control internal pipe splicing media: cedrus: h265: Fix flag name media: hantro: postproc: Fix motion vector space size media: hantro: Simplify postprocessor media: hevc: Embedded indexes in RPS media: staging: media: hantro: Fix typos wifi: wil6210: debugfs: fix info leak in wil_write_file_wmi() wifi: p54: Fix an error handling path in p54spi_probe() wifi: p54: add missing parentheses in p54_flush() selftests/bpf: fix a test for snprintf() overflow libbpf: fix an snprintf() overflow check can: pch_can: do not report txerr and rxerr during bus-off can: rcar_can: do not report txerr and rxerr during bus-off can: sja1000: do not report txerr and rxerr during bus-off can: hi311x: do not report txerr and rxerr during bus-off can: sun4i_can: do not report txerr and rxerr during bus-off can: kvaser_usb_hydra: do not report txerr and rxerr during bus-off can: kvaser_usb_leaf: do not report txerr and rxerr during bus-off can: usb_8dev: do not report txerr and rxerr during bus-off can: error: specify the values of data[5..7] of CAN error frames can: pch_can: pch_can_error(): initialize errc before using it Bluetooth: hci_intel: Add check for platform_driver_register i2c: cadence: Support PEC for SMBus block read i2c: mux-gpmux: Add of_node_put() when breaking out of loop wifi: wil6210: debugfs: fix uninitialized variable use in `wil_write_file_wmi()` wifi: iwlwifi: mvm: fix double list_add at iwl_mvm_mac_wake_tx_queue wifi: libertas: Fix possible refcount leak in if_usb_probe() media: cedrus: hevc: Add check for invalid timestamp net/mlx5e: Remove WARN_ON when trying to offload an unsupported TLS cipher/version net/mlx5e: Fix the value of MLX5E_MAX_RQ_NUM_MTTS net/mlx5: Adjust log_max_qp to be 18 at most crypto: hisilicon/hpre - don't use GFP_KERNEL to alloc mem during softirq crypto: inside-secure - Add missing MODULE_DEVICE_TABLE for of crypto: hisilicon/sec - fix auth key size error inet: add READ_ONCE(sk->sk_bound_dev_if) in INET_MATCH() ipv6: add READ_ONCE(sk->sk_bound_dev_if) in INET6_MATCH() net: allow unbound socket for packets in VRF when tcp_l3mdev_accept set netdevsim: fib: Fix reference count leak on route deletion failure wifi: rtw88: check the return value of alloc_workqueue() iavf: Fix max_rate limiting iavf: Fix 'tc qdisc show' listing too many queues netdevsim: Avoid allocation warnings triggered from user space net: rose: fix netdev reference changes net: ionic: fix error check for vlan flags in ionic_set_nic_features() dccp: put dccp_qpolicy_full() and dccp_qpolicy_push() in the same lock net: usb: make USB_RTL8153_ECM non user configurable wireguard: ratelimiter: use hrtimer in selftest wireguard: allowedips: don't corrupt stack when detecting overflow HID: amd_sfh: Don't show client init failed as error when discovery fails clk: renesas: r9a06g032: Fix UART clkgrp bitsel mtd: maps: Fix refcount leak in of_flash_probe_versatile mtd: maps: Fix refcount leak in ap_flash_init mtd: rawnand: meson: Fix a potential double free issue of: check previous kernel's ima-kexec-buffer against memory bounds scsi: qla2xxx: edif: Reduce Initiator-Initiator thrashing scsi: qla2xxx: edif: Fix potential stuck session in sa update scsi: qla2xxx: edif: Reduce connection thrash scsi: qla2xxx: edif: Fix inconsistent check of db_flags scsi: qla2xxx: edif: Synchronize NPIV deletion with authentication application scsi: qla2xxx: edif: Add retry for ELS passthrough scsi: qla2xxx: edif: Fix n2n discovery issue with secure target scsi: qla2xxx: edif: Fix n2n login retry for secure device KVM: SVM: Unwind "speculative" RIP advancement if INTn injection "fails" KVM: SVM: Stuff next_rip on emulated INT3 injection if NRIPS is supported phy: samsung: exynosautov9-ufs: correct TSRV register configurations PCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains() PCI: tegra194: Fix PM error handling in tegra_pcie_config_ep() HID: cp2112: prevent a buffer overflow in cp2112_xfer() mtd: sm_ftl: Fix deadlock caused by cancel_work_sync in sm_release mtd: partitions: Fix refcount leak in parse_redboot_of mtd: parsers: ofpart: Fix refcount leak in bcm4908_partitions_fw_offset mtd: st_spi_fsm: Add a clk_disable_unprepare() in .probe()'s error path PCI: mediatek-gen3: Fix refcount leak in mtk_pcie_init_irq_domains() fpga: altera-pr-ip: fix unsigned comparison with less than zero usb: host: Fix refcount leak in ehci_hcd_ppc_of_probe usb: ohci-nxp: Fix refcount leak in ohci_hcd_nxp_probe usb: gadget: tegra-xudc: Fix error check in tegra_xudc_powerdomain_init() usb: xhci: tegra: Fix error check netfilter: xtables: Bring SPDX identifier back scsi: qla2xxx: edif: Send LOGO for unexpected IKE message scsi: qla2xxx: edif: Reduce disruption due to multiple app start scsi: qla2xxx: edif: Fix no login after app start scsi: qla2xxx: edif: Tear down session if keys have been removed scsi: qla2xxx: edif: Fix session thrash scsi: qla2xxx: edif: Fix no logout on delete for N2N iio: accel: bma400: Fix the scale min and max macro values platform/chrome: cros_ec: Always expose last resume result iio: accel: bma400: Reordering of header files clk: mediatek: reset: Fix written reset bit offset lib/test_hmm: avoid accessing uninitialized pages memremap: remove support for external pgmap refcounts mm/memremap: fix memunmap_pages() race with get_dev_pagemap() KVM: Don't set Accessed/Dirty bits for ZERO_PAGE mwifiex: Ignore BTCOEX events from the 88W8897 firmware mwifiex: fix sleep in atomic context bugs caused by dev_coredumpv scsi: iscsi: Allow iscsi_if_stop_conn() to be called from kernel scsi: iscsi: Add helper to remove a session from the kernel scsi: iscsi: Fix session removal on shutdown dmaengine: dw-edma: Fix eDMA Rd/Wr-channels and DMA-direction semantics mtd: dataflash: Add SPI ID table clk: qcom: camcc-sm8250: Fix halt on boot by reducing driver's init level misc: rtsx: Fix an error handling path in rtsx_pci_probe() driver core: fix potential deadlock in __driver_attach clk: qcom: clk-krait: unlock spin after mux completion clk: qcom: gcc-msm8939: Add missing SYSTEM_MM_NOC_BFDCD_CLK_SRC clk: qcom: gcc-msm8939: Fix bimc_ddr_clk_src rcgr base address clk: qcom: gcc-msm8939: Add missing system_mm_noc_bfdcd_clk_src clk: qcom: gcc-msm8939: Point MM peripherals to system_mm_noc clock usb: host: xhci: use snprintf() in xhci_decode_trb() RDMA/rxe: Fix deadlock in rxe_do_local_ops() clk: qcom: ipq8074: fix NSS core PLL-s clk: qcom: ipq8074: SW workaround for UBI32 PLL lock clk: qcom: ipq8074: fix NSS port frequency tables clk: qcom: ipq8074: set BRANCH_HALT_DELAY flag for UBI clocks clk: qcom: camcc-sdm845: Fix topology around titan_top power domain clk: qcom: camcc-sm8250: Fix topology around titan_top power domain clk: qcom: clk-rcg2: Fail Duty-Cycle configuration if MND divider is not enabled. clk: qcom: clk-rcg2: Make sure to not write d=0 to the NMD register mm/mempolicy: fix get_nodes out of bound access PCI: dwc: Stop link on host_init errors and de-initialization PCI: dwc: Add unroll iATU space support to dw_pcie_disable_atu() PCI: dwc: Disable outbound windows only for controllers using iATU PCI: dwc: Set INCREASE_REGION_SIZE flag based on limit address PCI: dwc: Deallocate EPC memory on dw_pcie_ep_init() errors PCI: dwc: Always enable CDM check if "snps,enable-cdm-check" exists soundwire: bus_type: fix remove and shutdown support soundwire: revisit driver bind/unbind and callbacks KVM: arm64: Don't return from void function dmaengine: sf-pdma: Add multithread support for a DMA channel PCI: endpoint: Don't stop controller when unbinding endpoint function scsi: qla2xxx: Check correct variable in qla24xx_async_gffid() intel_th: Fix a resource leak in an error handling path intel_th: msu-sink: Potential dereference of null pointer intel_th: msu: Fix vmalloced buffers binder: fix redefinition of seq_file attributes staging: rtl8192u: Fix sleep in atomic context bug in dm_fsync_timer_callback mmc: sdhci-of-esdhc: Fix refcount leak in esdhc_signal_voltage_switch mmc: mxcmmc: Silence a clang warning mmc: renesas_sdhi: Get the reset handle early in the probe memstick/ms_block: Fix some incorrect memory allocation memstick/ms_block: Fix a memory leak mmc: sdhci-of-at91: fix set_uhs_signaling rewriting of MC1R of: device: Fix missing of_node_put() in of_dma_set_restricted_buffer mmc: block: Add single read for 4k sector cards KVM: s390: pv: leak the topmost page table when destroy fails PCI/portdrv: Don't disable AER reporting in get_port_device_capability() PCI: qcom: Set up rev 2.1.0 PARF_PHY before enabling clocks scsi: smartpqi: Fix DMA direction for RAID requests xtensa: iss/network: provide release() callback xtensa: iss: fix handling error cases in iss_net_configure() usb: gadget: udc: amd5536 depends on HAS_DMA usb: aspeed-vhub: Fix refcount leak bug in ast_vhub_init_desc() usb: dwc3: core: Deprecate GCTL.CORESOFTRESET usb: dwc3: core: Do not perform GCTL_CORE_SOFTRESET during bootup usb: dwc3: qcom: fix missing optional irq warnings eeprom: idt_89hpesx: uninitialized data in idt_dbgfs_csr_write() phy: stm32: fix error return in stm32_usbphyc_phy_init interconnect: imx: fix max_node_id um: random: Don't initialise hwrng struct with zero RDMA/irdma: Fix a window for use-after-free RDMA/irdma: Fix VLAN connection with wildcard address RDMA/irdma: Fix setting of QP context err_rq_idx_valid field RDMA/rtrs-srv: Fix modinfo output for stringify RDMA/rtrs: Fix warning when use poll mode on client side. RDMA/rtrs: Replace duplicate check with is_pollqueue helper RDMA/rtrs: Introduce destroy_cq helper RDMA/rtrs: Do not allow sessname to contain special symbols / and . RDMA/rtrs: Rename rtrs_sess to rtrs_path RDMA/rtrs-srv: Rename rtrs_srv_sess to rtrs_srv_path RDMA/rtrs-clt: Rename rtrs_clt_sess to rtrs_clt_path RDMA/rtrs-clt: Replace list_next_or_null_rr_rcu with an inline function RDMA/qedr: Fix potential memory leak in __qedr_alloc_mr() RDMA/hns: Fix incorrect clearing of interrupt status register RDMA/siw: Fix duplicated reported IW_CM_EVENT_CONNECT_REPLY event iio: cros: Register FIFO callback after sensor is registered clk: qcom: gcc-msm8939: Fix weird field spacing in ftbl_gcc_camss_cci_clk RDMA/hfi1: fix potential memory leak in setup_base_ctxt() gpio: gpiolib-of: Fix refcount bugs in of_mm_gpiochip_add_data() HID: mcp2221: prevent a buffer overflow in mcp_smbus_write() HID: amd_sfh: Add NULL check for hid device dmaengine: imx-dma: Cast of_device_get_match_data() with (uintptr_t) scripts/gdb: lx-dmesg: read records individually scripts/gdb: fix 'lx-dmesg' on 32 bits arch RDMA/rxe: Fix mw bind to allow any consumer key portion mmc: cavium-octeon: Add of_node_put() when breaking out of loop mmc: cavium-thunderx: Add of_node_put() when breaking out of loop HID: alps: Declare U1_UNICORN_LEGACY support RDMA/rxe: For invalidate compare according to set keys in mr PCI: tegra194: Fix Root Port interrupt handling PCI: tegra194: Fix link up retry sequence HID: amd_sfh: Handle condition of "no sensors" USB: serial: fix tty-port initialized comments usb: cdns3: change place of 'priv_ep' assignment in cdns3_gadget_ep_dequeue(), cdns3_gadget_ep_enable() mtd: spi-nor: fix spi_nor_spimem_setup_op() call in spi_nor_erase_{sector,chip}() KVM: nVMX: Set UMIP bit CR4_FIXED1 MSR when emulating UMIP platform/olpc: Fix uninitialized data in debugfs write RDMA/srpt: Duplicate port name members RDMA/srpt: Introduce a reference count in struct srpt_device RDMA/srpt: Fix a use-after-free android: binder: stop saving a pointer to the VMA mm/mmap.c: fix missing call to vm_unacct_memory in mmap_region selftests: kvm: set rax before vmcall of/fdt: declared return type does not match actual return type RDMA/mlx5: Add missing check for return value in get namespace flow RDMA/rxe: Add memory barriers to kernel queues RDMA/rxe: Remove the is_user members of struct rxe_sq/rxe_rq/rxe_srq RDMA/rxe: Fix error unwind in rxe_create_qp() block/rnbd-srv: Set keep_id to true after mutex_trylock null_blk: fix ida error handling in null_add_dev() nvme: use command_id instead of req->tag in trace_nvme_complete_rq() nvme: define compat_ioctl again to unbreak 32-bit userspace. nvme: disable namespace access for unsupported metadata nvme: don't return an error from nvme_configure_metadata nvme: catch -ENODEV from nvme_revalidate_zones again block/bio: remove duplicate append pages code block: ensure iov_iter advances for added pages jbd2: fix outstanding credits assert in jbd2_journal_commit_transaction() ext4: recover csum seed of tmp_inode after migrating to extents jbd2: fix assertion 'jh->b_frozen_data == NULL' failure when journal aborted usb: cdns3: Don't use priv_dev uninitialized in cdns3_gadget_ep_enable() opp: Fix error check in dev_pm_opp_attach_genpd() ASoC: cros_ec_codec: Fix refcount leak in cros_ec_codec_platform_probe ASoC: samsung: Fix error handling in aries_audio_probe ASoC: imx-audmux: Silence a clang warning ASoC: mediatek: mt8173: Fix refcount leak in mt8173_rt5650_rt5676_dev_probe ASoC: mt6797-mt6351: Fix refcount leak in mt6797_mt6351_dev_probe ASoC: codecs: da7210: add check for i2c_add_driver ASoC: mediatek: mt8173-rt5650: Fix refcount leak in mt8173_rt5650_dev_probe serial: 8250: Export ICR access helpers for internal use serial: 8250: dma: Allow driver operations before starting DMA transfers serial: 8250_dw: Store LSR into lsr_saved_flags in dw8250_tx_wait_empty() ASoC: codecs: msm8916-wcd-digital: move gains from SX_TLV to S8_TLV ASoC: codecs: wcd9335: move gains from SX_TLV to S8_TLV rpmsg: char: Add mutex protection for rpmsg_eptdev_open() rpmsg: mtk_rpmsg: Fix circular locking dependency remoteproc: k3-r5: Fix refcount leak in k3_r5_cluster_of_init selftests/livepatch: better synchronize test_klp_callbacks_busy profiling: fix shift too large makes kernel panic remoteproc: imx_rproc: Fix refcount leak in imx_rproc_addr_init ASoC: samsung: h1940_uda1380: include proepr GPIO consumer header powerpc/perf: Optimize clearing the pending PMI and remove WARN_ON for PMI check in power_pmu_disable ASoC: samsung: change gpiod_speaker_power and rx1950_audio from global to static variables tty: n_gsm: Delete gsmtty open SABM frame when config requester tty: n_gsm: fix user open not possible at responder until initiator open tty: n_gsm: fix tty registration before control channel open tty: n_gsm: fix wrong queuing behavior in gsm_dlci_data_output() tty: n_gsm: fix missing timer to handle stalled links tty: n_gsm: fix non flow control frames during mux flow off tty: n_gsm: fix packet re-transmission without open control channel tty: n_gsm: fix race condition in gsmld_write() tty: n_gsm: fix resource allocation order in gsm_activate_mux() ASoC: qcom: Fix missing of_node_put() in asoc_qcom_lpass_cpu_platform_probe() ASoC: imx-card: Fix DSD/PDM mclk frequency remoteproc: qcom: wcnss: Fix handling of IRQs vfio/ccw: Do not change FSM state in subchannel event serial: 8250_fsl: Don't report FE, PE and OE twice tty: n_gsm: fix wrong T1 retry count handling tty: n_gsm: fix DM command tty: n_gsm: fix missing corner cases in gsmld_poll() MIPS: vdso: Utilize __pa() for gic_pfn swiotlb: fail map correctly with failed io_tlb_default_mem ASoC: mt6359: Fix refcount leak bug serial: 8250_bcm7271: Save/restore RTS in suspend/resume iommu/exynos: Handle failed IOMMU device registration properly 9p: fix a bunch of checkpatch warnings 9p: Drop kref usage 9p: Add client parameter to p9_req_put() net: 9p: fix refcount leak in p9_read_work() error handling MIPS: Fixed __debug_virt_addr_valid() rpmsg: qcom_smd: Fix refcount leak in qcom_smd_parse_edge kfifo: fix kfifo_to_user() return type lib/smp_processor_id: fix imbalanced instrumentation_end() call proc: fix a dentry lock race between release_task and lookup remoteproc: qcom: pas: Check if coredump is enabled remoteproc: sysmon: Wait for SSCTL service to come up mfd: t7l66xb: Drop platform disable callback mfd: max77620: Fix refcount leak in max77620_initialise_fps iommu/arm-smmu: qcom_iommu: Add of_node_put() when breaking out of loop perf tools: Fix dso_id inode generation comparison s390/dump: fix old lowcore virtual vs physical address confusion s390/maccess: fix semantics of memcpy_real() and its callers s390/crash: fix incorrect number of bytes to copy to user space s390/zcore: fix race when reading from hardware system area ASoC: fsl_asrc: force cast the asrc_format type ASoC: fsl-asoc-card: force cast the asrc_format type ASoC: fsl_easrc: use snd_pcm_format_t type for sample_format ASoC: imx-card: use snd_pcm_format_t type for asrc_format ASoC: qcom: q6dsp: Fix an off-by-one in q6adm_alloc_copp() fuse: Remove the control interface for virtio-fs ASoC: audio-graph-card: Add of_node_put() in fail path watchdog: sp5100_tco: Fix a memory leak of EFCH MMIO resource watchdog: armada_37xx_wdt: check the return value of devm_ioremap() in armada_37xx_wdt_probe() video: fbdev: amba-clcd: Fix refcount leak bugs video: fbdev: sis: fix typos in SiS_GetModeID() ASoC: mchp-spdifrx: disable end of block interrupt on failures powerpc/32: Call mmu_mark_initmem_nx() regardless of data block mapping. powerpc/32: Do not allow selection of e5500 or e6500 CPUs on PPC32 powerpc/iommu: Fix iommu_table_in_use for a small default DMA window case powerpc/pci: Prefer PCI domain assignment via DT 'linux,pci-domain' and alias tty: serial: fsl_lpuart: correct the count of break characters s390/dump: fix os_info virtual vs physical address confusion s390/smp: cleanup target CPU callback starting s390/smp: cleanup control register update routines s390/maccess: rework absolute lowcore accessors s390/smp: enforce lowcore protection on CPU restart f2fs: fix to remove F2FS_COMPR_FL and tag F2FS_NOCOMP_FL at the same time powerpc/spufs: Fix refcount leak in spufs_init_isolated_loader powerpc/xive: Fix refcount leak in xive_get_max_prio powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address perf symbol: Fail to read phdr workaround kprobes: Forbid probing on trampoline and BPF code areas x86/bus_lock: Don't assume the init value of DEBUGCTLMSR.BUS_LOCK_DETECT to be zero powerpc/pci: Fix PHB numbering when using opal-phbid genelf: Use HAVE_LIBCRYPTO_SUPPORT, not the never defined HAVE_LIBCRYPTO scripts/faddr2line: Fix vmlinux detection on arm64 sched/deadline: Merge dl_task_can_attach() and dl_cpu_busy() sched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed x86/numa: Use cpumask_available instead of hardcoded NULL check video: fbdev: arkfb: Fix a divide-by-zero bug in ark_set_pixclock() tools/thermal: Fix possible path truncations sched: Fix the check of nr_running at queue wakelist sched: Remove the limitation of WF_ON_CPU on wakelist if wakee cpu is idle sched/core: Do not requeue task on CPU excluded from cpus_mask x86/entry: Build thunk_$(BITS) only if CONFIG_PREEMPTION=y f2fs: allow compression for mmap files in compress_mode=user f2fs: do not allow to decompress files have FI_COMPRESS_RELEASED video: fbdev: vt8623fb: Check the size of screen before memset_io() video: fbdev: arkfb: Check the size of screen before memset_io() video: fbdev: s3fb: Check the size of screen before memset_io() scsi: ufs: core: Correct ufshcd_shutdown() flow scsi: zfcp: Fix missing auto port scan and thus missing target ports scsi: qla2xxx: Fix imbalance vha->vref_count scsi: qla2xxx: Fix discovery issues in FC-AL topology scsi: qla2xxx: Turn off multi-queue for 8G adapters scsi: qla2xxx: Fix crash due to stale SRB access around I/O timeouts scsi: qla2xxx: Fix excessive I/O error messages by default scsi: qla2xxx: Fix erroneous mailbox timeout after PCI error injection scsi: qla2xxx: Wind down adapter after PCIe error scsi: qla2xxx: Fix losing FCP-2 targets on long port disable with I/Os scsi: qla2xxx: Fix losing target when it reappears during delete scsi: qla2xxx: Fix losing FCP-2 targets during port perturbation tests x86/bugs: Enable STIBP for IBPB mitigated RETBleed ftrace/x86: Add back ftrace_expected assignment x86/kprobes: Update kcb status flag after singlestepping x86/olpc: fix 'logical not is only applied to the left hand side' SMB3: fix lease break timeout when multiple deferred close handles for the same file. posix-cpu-timers: Cleanup CPU timers before freeing them during exec Input: gscps2 - check return value of ioremap() in gscps2_probe() __follow_mount_rcu(): verify that mount_lock remains unchanged spmi: trace: fix stack-out-of-bound access in SPMI tracing functions drm/mediatek: Allow commands to be sent during video mode drm/mediatek: Keep dsi as LP00 before dcs cmds transfer crypto: blake2s - remove shash module drm/dp/mst: Read the extended DPCD capabilities during system resume drm/vc4: drv: Adopt the dma configuration from the HVS or V3D component usbnet: smsc95xx: Don't clear read-only PHY interrupt usbnet: smsc95xx: Avoid link settings race on interrupt reception usbnet: smsc95xx: Forward PHY interrupts to PHY driver to avoid polling usbnet: smsc95xx: Fix deadlock on runtime resume firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails scsi: lpfc: Fix EEH support for NVMe I/O scsi: lpfc: SLI path split: Refactor lpfc_iocbq scsi: lpfc: SLI path split: Refactor fast and slow paths to native SLI4 scsi: lpfc: SLI path split: Refactor SCSI paths scsi: lpfc: Remove extra atomic_inc on cmd_pending in queuecommand after VMID intel_th: pci: Add Meteor Lake-P support intel_th: pci: Add Raptor Lake-S PCH support intel_th: pci: Add Raptor Lake-S CPU support KVM: set_msr_mce: Permit guests to ignore single-bit ECC errors KVM: x86: Signal #GP, not -EPERM, on bad WRMSR(MCi_CTL/STATUS) iommu/vt-d: avoid invalid memory access via node_online(NUMA_NO_NODE) PCI/AER: Iterate over error counters instead of error strings PCI: qcom: Power on PHY before IPQ8074 DBI register accesses serial: 8250_pci: Refactor the loop in pci_ite887x_init() serial: 8250_pci: Replace dev_*() by pci_*() macros serial: 8250: Fold EndRun device support into OxSemi Tornado code serial: 8250: Add proper clock handling for OxSemi PCIe devices tty: 8250: Add support for Brainboxes PX cards. dm writecache: set a default MAX_WRITEBACK_JOBS kexec, KEYS, s390: Make use of built-in and secondary keyring for signature verification dm thin: fix use-after-free crash in dm_sm_register_threshold_callback net/9p: Initialize the iounit field during fid creation ARM: remove some dead code timekeeping: contribute wall clock to rng on time change locking/csd_lock: Change csdlock_debug from early_param to __setup block: remove the struct blk_queue_ctx forward declaration block: don't allow the same type rq_qos add more than once btrfs: ensure pages are unlocked on cow_file_range() failure btrfs: reset block group chunk force if we have to wait btrfs: properly flag filesystem with BTRFS_FEATURE_INCOMPAT_BIG_METADATA ACPI: CPPC: Do not prevent CPPC from working in the future powerpc/powernv/kvm: Use darn for H_RANDOM on Power9 KVM: x86/pmu: Introduce the ctrl_mask value for fixed counter KVM: VMX: Mark all PERF_GLOBAL_(OVF)_CTRL bits reserved if there's no vPMU KVM: x86/pmu: Ignore pmu->global_ctrl check if vPMU doesn't support global_ctrl KVM: VMX: Add helper to check if the guest PMU has PERF_GLOBAL_CTRL KVM: nVMX: Attempt to load PERF_GLOBAL_CTRL on nVMX xfer iff it exists dm raid: fix address sanitizer warning in raid_status dm raid: fix address sanitizer warning in raid_resume tracing: Add '__rel_loc' using trace event macros tracing: Avoid -Warray-bounds warning for __rel_loc macro ext4: update s_overhead_clusters in the superblock during an on-line resize ext4: fix extent status tree race in writeback error recovery path ext4: add EXT4_INODE_HAS_XATTR_SPACE macro in xattr.h ext4: fix use-after-free in ext4_xattr_set_entry ext4: correct max_inline_xattr_value_size computing ext4: correct the misjudgment in ext4_iget_extra_inode ext4: fix warning in ext4_iomap_begin as race between bmap and write ext4: check if directory block is within i_size ext4: make sure ext4_append() always allocates new block ext4: remove EA inode entry from mbcache on inode eviction ext4: use kmemdup() to replace kmalloc + memcpy ext4: unindent codeblock in ext4_xattr_block_set() ext4: fix race when reusing xattr blocks KEYS: asymmetric: enforce SM2 signature use pkey algo tpm: eventlog: Fix section mismatch for DEBUG_SECTION_MISMATCH xen-blkback: fix persistent grants negotiation xen-blkback: Apply 'feature_persistent' parameter when connect xen-blkfront: Apply 'feature_persistent' parameter when connect powerpc: Fix eh field when calling lwarx on PPC32 tracing: Use a struct alignof to determine trace event field alignment net_sched: cls_route: remove from list when handle is 0 mac80211: fix a memory leak where sta_info is not freed tcp: fix over estimation in sk_forced_mem_schedule() crypto: lib/blake2s - reduce stack frame usage in self test Revert "mwifiex: fix sleep in atomic context bugs caused by dev_coredumpv" Revert "s390/smp: enforce lowcore protection on CPU restart" drm/bridge: tc358767: Fix (e)DP bridge endpoint parsing in dedicated function net: phy: smsc: Disable Energy Detect Power-Down in interrupt mode drm/vc4: change vc4_dma_range_matches from a global to static tracing/perf: Avoid -Warray-bounds warning for __rel_loc macro drm/msm: Fix dirtyfb refcounting drm/meson: Fix refcount leak in meson_encoder_hdmi_init io_uring: mem-account pbuf buckets Revert "net: usb: ax88179_178a needs FLAG_SEND_ZLP" Bluetooth: L2CAP: Fix l2cap_global_chan_by_psm regression drm/bridge: Move devm_drm_of_get_bridge to bridge/panel.c scsi: lpfc: Fix locking for lpfc_sli_iocbq_lookup() scsi: lpfc: Fix element offset in __lpfc_sli_release_iocbq_s4() scsi: lpfc: Resolve some cleanup issues following SLI path refactoring Linux 5.15.61 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I0849e49fb265651bf6277e4ead9c440d50ed7536	2022-08-22 14:29:30 +02:00
Juri Lelli	8df06a2753	wait: Fix __wait_event_hrtimeout for RT/DL tasks ... [ Upstream commit cceeeb6a6d02e7b9a74ddd27a3225013b34174aa ] Changes to hrtimer mode (potentially made by __hrtimer_init_sleeper on PREEMPT_RT) are not visible to hrtimer_start_range_ns, thus not accounted for by hrtimer_start_expires call paths. In particular, __wait_event_hrtimeout suffers from this problem as we have, for example: fs/aio.c::read_events wait_event_interruptible_hrtimeout __wait_event_hrtimeout hrtimer_init_sleeper_on_stack <- this might "mode |= HRTIMER_MODE_HARD" on RT if task runs at RT/DL priority hrtimer_start_range_ns WARN_ON_ONCE(!(mode & HRTIMER_MODE_HARD) ^ !timer->is_hard) fires since the latter doesn't see the change of mode done by init_sleeper Fix it by making __wait_event_hrtimeout call hrtimer_sleeper_start_expires, which is aware of the special RT/DL case, instead of hrtimer_start_range_ns. Reported-by: Bruno Goncalves <bgoncalv@redhat.com> Signed-off-by: Juri Lelli <juri.lelli@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Daniel Bristot de Oliveira <bristot@kernel.org> Reviewed-by: Valentin Schneider <vschneid@redhat.com> Link: https://lore.kernel.org/r/20220627095051.42470-1-juri.lelli@redhat.com Signed-off-by: Sasha Levin <sashal@kernel.org>	2022-08-17 14:23:01 +02:00
Pradeep P V K	5de2ef69b6	FROMLIST: fuse: give wakeup hints to the scheduler ... The synchronous wakeup interface is available only for the interruptible wakeup. Add it for normal wakeup and use this synchronous wakeup interface to wakeup the userspace daemon. Scheduler can make use of this hint to find a better CPU for the waker task. With this change the performance numbers for compress, decompress and copy use-cases on /sdcard path has improved by ~30%. Use-case details: 1. copy 10000 files of each 4k size into /sdcard path 2. use any File explorer application that has compress/decompress support 3. start compress/decompress and capture the time. ------------------------------------------------- | Default | wakeup support | Improvement/Diff | ------------------------------------------------- | 13.8 sec | 9.9 sec | 3.9 sec (28.26%) | ------------------------------------------------- Co-developed-by: Pavankumar Kondeti <quic_pkondeti@quicinc.com> Signed-off-by: Pradeep P V K <quic_pragalla@quicinc.com> Bug: 216261533 Link: https://lore.kernel.org/lkml/1638780405-38026-1-git-send-email-quic_pragalla@quicinc.com/ Change-Id: I9ac89064e34b1e0605064bf4d2d3a310679cb605 Signed-off-by: Pradeep P V K <quic_pragalla@quicinc.com> Signed-off-by: Alessio Balsini <balsini@google.com>	2022-04-04 10:18:55 +00:00
Eric Biggers	1ebb6cd8c7	wait: add wake_up_pollfree() ... commit 42288cb44c4b5fff7653bc392b583a2b8bd6a8c0 upstream. Several ->poll() implementations are special in that they use a waitqueue whose lifetime is the current task, rather than the struct file as is normally the case. This is okay for blocking polls, since a blocking poll occurs within one task; however, non-blocking polls require another solution. This solution is for the queue to be cleared before it is freed, using 'wake_up_poll(wq, EPOLLHUP | POLLFREE);'. However, that has a bug: wake_up_poll() calls __wake_up() with nr_exclusive=1. Therefore, if there are multiple "exclusive" waiters, and the wakeup function for the first one returns a positive value, only that one will be called. That's *not* what's needed for POLLFREE; POLLFREE is special in that it really needs to wake up everyone. Considering the three non-blocking poll systems: - io_uring poll doesn't handle POLLFREE at all, so it is broken anyway. - aio poll is unaffected, since it doesn't support exclusive waits. However, that's fragile, as someone could add this feature later. - epoll doesn't appear to be broken by this, since its wakeup function returns 0 when it sees POLLFREE. But this is fragile. Although there is a workaround (see epoll), it's better to define a function which always sends POLLFREE to all waiters. Add such a function. Also make it verify that the queue really becomes empty after all waiters have been woken up. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20211209010455.42744-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2021-12-14 10:57:15 +01:00
Linus Torvalds	5d3c0db459	Merge tag 'sched-core-2021-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Pull scheduler updates from Ingo Molnar: - The biggest change in this cycle is scheduler support for asymmetric scheduling affinity, to support the execution of legacy 32-bit tasks on AArch32 systems that also have 64-bit-only CPUs. Architectures can fill in this functionality by defining their own task_cpu_possible_mask(p). When this is done, the scheduler will make sure the task will only be scheduled on CPUs that support it. (The actual arm64 specific changes are not part of this tree.) For other architectures there will be no change in functionality. - Add cgroup SCHED_IDLE support - Increase node-distance flexibility & delay determining it until a CPU is brought online. (This enables platforms where node distance isn't final until the CPU is only.) - Deadline scheduler enhancements & fixes - Misc fixes & cleanups. * tag 'sched-core-2021-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits) eventfd: Make signal recursion protection a task bit sched/fair: Mark tg_is_idle() an inline in the !CONFIG_FAIR_GROUP_SCHED case sched: Introduce dl_task_check_affinity() to check proposed affinity sched: Allow task CPU affinity to be restricted on asymmetric systems sched: Split the guts of sched_setaffinity() into a helper function sched: Introduce task_struct::user_cpus_ptr to track requested affinity sched: Reject CPU affinity changes based on task_cpu_possible_mask() cpuset: Cleanup cpuset_cpus_allowed_fallback() use in select_fallback_rq() cpuset: Honour task_cpu_possible_mask() in guarantee_online_cpus() cpuset: Don't use the cpu_possible_mask as a last resort for cgroup v1 sched: Introduce task_cpu_possible_mask() to limit fallback rq selection sched: Cgroup SCHED_IDLE support sched/topology: Skip updating masks for non-online nodes sched: Replace deprecated CPU-hotplug functions. sched: Skip priority checks with SCHED_FLAG_KEEP_PARAMS sched: Fix UCLAMP_FLAG_IDLE setting sched/deadline: Fix missing clock update in migrate_task_rq_dl() sched/fair: Avoid a second scan of target in select_idle_cpu sched/fair: Use prev instead of new target as recent_used_cpu sched: Don't report SCHED_FLAG_SUGOV in sched_getattr() ...	2021-08-30 13:42:10 -07:00
Julian Wiedmann	77eccd0dfa	wait: use LIST_HEAD_INIT() to initialize wait_queue_head ... Replace the open-coded initialization with the right macro. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20210601151120.329223-1-jwi@linux.ibm.com	2021-06-28 15:42:25 +02:00
Jan Kara	11c7aa0dde	rq-qos: fix missed wake-ups in rq_qos_throttle try two ... Commit 545fbd0775 ("rq-qos: fix missed wake-ups in rq_qos_throttle") tried to fix a problem that a process could be sleeping in rq_qos_wait() without anyone to wake it up. However the fix is not complete and the following can still happen: CPU1 (waiter1) CPU2 (waiter2) CPU3 (waker) rq_qos_wait() rq_qos_wait() acquire_inflight_cb() -> fails acquire_inflight_cb() -> fails completes IOs, inflight decreased prepare_to_wait_exclusive() prepare_to_wait_exclusive() has_sleeper = !wq_has_single_sleeper() -> true as there are two sleepers has_sleeper = !wq_has_single_sleeper() -> true io_schedule() io_schedule() Deadlock as now there's nobody to wakeup the two waiters. The logic automatically blocking when there are already sleepers is really subtle and the only way to make it work reliably is that we check whether there are some waiters in the queue when adding ourselves there. That way, we are guaranteed that at least the first process to enter the wait queue will recheck the waiting condition before going to sleep and thus guarantee forward progress. Fixes: 545fbd0775 ("rq-qos: fix missed wake-ups in rq_qos_throttle") CC: stable@vger.kernel.org Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20210607112613.25344-1-jack@suse.cz Signed-off-by: Jens Axboe <axboe@kernel.dk>	2021-06-08 15:12:57 -06:00
David Woodhouse	c4d51a52c6	sched/wait: Add add_wait_queue_priority() ... This allows an exclusive wait_queue_entry to be added at the head of the queue, instead of the tail as normal. Thus, it gets to consume events first without allowing non-exclusive waiters to be woken at all. The (first) intended use is for KVM IRQFD, which currently has inconsistent behaviour depending on whether posted interrupts are available or not. If they are, KVM will bypass the eventfd completely and deliver interrupts directly to the appropriate vCPU. If not, events are delivered through the eventfd and userspace will receive them when polling on the eventfd. By using add_wait_queue_priority(), KVM will be able to consistently consume events within the kernel without accidentally exposing them to userspace when they're supposed to be bypassed. This, in turn, means that userspace doesn't have to jump through hoops to avoid listening on the erroneously noisy eventfd and injecting duplicate interrupts. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Message-Id: <20201027143944.648769-2-dwmw2@infradead.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>	2020-11-15 09:49:09 -05:00
Linus Torvalds	5ef64cc898	mm: allow a controlled amount of unfairness in the page lock ... Commit 2a9127fcf2 ("mm: rewrite wait_on_page_bit_common() logic") made the page locking entirely fair, in that if a waiter came in while the lock was held, the lock would be transferred to the lockers strictly in order. That was intended to finally get rid of the long-reported watchdog failures that involved the page lock under extreme load, where a process could end up waiting essentially forever, as other page lockers stole the lock from under it. It also improved some benchmarks, but it ended up causing huge performance regressions on others, simply because fair lock behavior doesn't end up giving out the lock as aggressively, causing better worst-case latency, but potentially much worse average latencies and throughput. Instead of reverting that change entirely, this introduces a controlled amount of unfairness, with a sysctl knob to tune it if somebody needs to. But the default value should hopefully be good for any normal load, allowing a few rounds of lock stealing, but enforcing the strict ordering before the lock has been stolen too many times. There is also a hint from Matthieu Baerts that the fair page coloring may end up exposing an ABBA deadlock that is hidden by the usual optimistic lock stealing, and while the unfairness doesn't fix the fundamental issue (and I'm still looking at that), it avoids it in practice. The amount of unfairness can be modified by writing a new value to the 'sysctl_page_lock_unfairness' variable (default value of 5, exposed through /proc/sys/vm/page_lock_unfairness), but that is hopefully something we'd use mainly for debugging rather than being necessary for any deep system tuning. This whole issue has exposed just how critical the page lock can be, and how contended it gets under certain locks. And the main contention doesn't really seem to be anything related to IO (which was the origin of this lock), but for things like just verifying that the page file mapping is stable while faulting in the page into a page table. Link: https://lore.kernel.org/linux-fsdevel/ed8442fd-6f54-dd84-cd4a-941e8b7ee603@MichaelLarabel.com/ Link: https://www.phoronix.com/scan.php?page=article&item=linux-50-59&num=1 Link: https://lore.kernel.org/linux-fsdevel/c560a38d-8313-51fb-b1ec-e904bd8836bc@tessares.net/ Reported-and-tested-by: Michael Larabel <Michael@michaellarabel.com> Tested-by: Matthieu Baerts <matthieu.baerts@tessares.net> Cc: Dave Chinner <david@fromorbit.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Chris Mason <clm@fb.com> Cc: Jan Kara <jack@suse.cz> Cc: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2020-09-17 10:26:41 -07:00
Paul E. McKenney	2beaf3280e	sched/core: Add function to sample state of locked-down task ... A running task's state can be sampled in a consistent manner (for example, for diagnostic purposes) simply by invoking smp_call_function_single() on its CPU, which may be obtained using task_cpu(), then having the IPI handler verify that the desired task is in fact still running. However, if the task is not running, this sampling can in theory be done immediately and directly. In practice, the task might start running at any time, including during the sampling period. Gaining a consistent sample of a not-running task therefore requires that something be done to lock down the target task's state. This commit therefore adds a try_invoke_on_locked_down_task() function that invokes a specified function if the specified task can be locked down, returning true if successful and if the specified function returns true. Otherwise this function simply returns false. Given that the function passed to try_invoke_on_nonrunning_task() might be invoked with a runqueue lock held, that function had better be quite lightweight. The function is passed the target task's task_struct pointer and the argument passed to try_invoke_on_locked_down_task(), allowing easy access to task state and to a location for further variables to be passed in and out. Note that the specified function will be called even if the specified task is currently running. The function can use ->on_rq and task_curr() to quickly and easily determine the task's state, and can return false if this state is not to the function's liking. The caller of the try_invoke_on_locked_down_task() would then see the false return value, and could take appropriate action, for example, trying again later or sending an IPI if matters are more urgent. It is expected that use cases such as the RCU CPU stall warning code will simply return false if the task is currently running. However, there are use cases involving nohz_full CPUs where the specified function might instead fall back to an alternative sampling scheme that relies on heavier synchronization (such as memory barriers) in the target task. Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Juri Lelli <juri.lelli@redhat.com> Cc: Vincent Guittot <vincent.guittot@linaro.org> Cc: Dietmar Eggemann <dietmar.eggemann@arm.com> Cc: Ben Segall <bsegall@google.com> Cc: Mel Gorman <mgorman@suse.de> [ paulmck: Apply feedback from Peter Zijlstra and Steven Rostedt. ] [ paulmck: Invoke if running to handle feedback from Mathieu Desnoyers. ] Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>	2020-04-27 11:03:50 -07:00
Peter Zijlstra	7f26482a87	locking/percpu-rwsem: Remove the embedded rwsem ... The filesystem freezer uses percpu-rwsem in a way that is effectively write_non_owner() and achieves this with a few horrible hacks that rely on the rwsem (!percpu) implementation. When PREEMPT_RT replaces the rwsem implementation with a PI aware variant this comes apart. Remove the embedded rwsem and implement it using a waitqueue and an atomic_t. - make readers_block an atomic, and use it, with the waitqueue for a blocking test-and-set write-side. - have the read-side wait for the 'lock' state to clear. Have the waiters use FIFO queueing and mark them (reader/writer) with a new WQ_FLAG. Use a custom wake_function to wake either a single writer or all readers until a writer. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Davidlohr Bueso <dbueso@suse.de> Acked-by: Will Deacon <will@kernel.org> Acked-by: Waiman Long <longman@redhat.com> Tested-by: Juri Lelli <juri.lelli@redhat.com> Link: https://lkml.kernel.org/r/20200204092403.GB14879@hirez.programming.kicks-ass.net	2020-02-11 13:10:56 +01:00
David Howells	f94df9890e	Add wake_up_interruptible_sync_poll_locked() ... Add a wakeup call for a case whereby the caller already has the waitqueue spinlock held. This can be used by pipes to alter the ring buffer indices and issue a wakeup under the same spinlock. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>	2019-10-31 15:12:23 +00:00
David Howells	ce4dd4429b	Remove the nr_exclusive argument from __wake_up_sync_key() ... Remove the nr_exclusive argument from __wake_up_sync_key() and derived functions as everything seems to set it to 1. Note also that if it wasn't set to 1, it would clear WF_SYNC anyway. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>	2019-10-23 17:02:34 +01:00
Linus Torvalds	7f2444d38f	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Pull core timer updates from Thomas Gleixner: "Timers and timekeeping updates: - A large overhaul of the posix CPU timer code which is a preparation for moving the CPU timer expiry out into task work so it can be properly accounted on the task/process. An update to the bogus permission checks will come later during the merge window as feedback was not complete before heading of for travel. - Switch the timerqueue code to use cached rbtrees and get rid of the homebrewn caching of the leftmost node. - Consolidate hrtimer_init() + hrtimer_init_sleeper() calls into a single function - Implement the separation of hrtimers to be forced to expire in hard interrupt context even when PREEMPT_RT is enabled and mark the affected timers accordingly. - Implement a mechanism for hrtimers and the timer wheel to protect RT against priority inversion and live lock issues when a (hr)timer which should be canceled is currently executing the callback. Instead of infinitely spinning, the task which tries to cancel the timer blocks on a per cpu base expiry lock which is held and released by the (hr)timer expiry code. - Enable the Hyper-V TSC page based sched_clock for Hyper-V guests resulting in faster access to timekeeping functions. - Updates to various clocksource/clockevent drivers and their device tree bindings. - The usual small improvements all over the place" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (101 commits) posix-cpu-timers: Fix permission check regression posix-cpu-timers: Always clear head pointer on dequeue hrtimer: Add a missing bracket and hide `migration_base' on !SMP posix-cpu-timers: Make expiry_active check actually work correctly posix-timers: Unbreak CONFIG_POSIX_TIMERS=n build tick: Mark sched_timer to expire in hard interrupt context hrtimer: Add kernel doc annotation for HRTIMER_MODE_HARD x86/hyperv: Hide pv_ops access for CONFIG_PARAVIRT=n posix-cpu-timers: Utilize timerqueue for storage posix-cpu-timers: Move state tracking to struct posix_cputimers posix-cpu-timers: Deduplicate rlimit handling posix-cpu-timers: Remove pointless comparisons posix-cpu-timers: Get rid of 64bit divisions posix-cpu-timers: Consolidate timer expiry further posix-cpu-timers: Get rid of zero checks rlimit: Rewrite non-sensical RLIMIT_CPU comment posix-cpu-timers: Respect INFINITY for hard RTTIME limit posix-cpu-timers: Switch thread group sampling to array posix-cpu-timers: Restructure expiry array posix-cpu-timers: Remove cputime_expires ...	2019-09-17 12:35:15 -07:00
Sebastian Andrzej Siewior	dbc1625fc9	hrtimer: Consolidate hrtimer_init() + hrtimer_init_sleeper() calls ... hrtimer_init_sleeper() calls require prior initialisation of the hrtimer object which is embedded into the hrtimer_sleeper. Combine the initialization and spare a function call. Fixup all call sites. This is also a preparatory change for PREEMPT_RT to do hrtimer sleeper specific initializations of the embedded hrtimer without modifying any of the call sites. No functional change. [ anna-maria: Minor cleanups ] [ tglx: Adopted to the removal of the task argument of hrtimer_init_sleeper() and trivial polishing. Folded a fix from Stephen Rothwell for the vsoc code ] Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20190726185752.887468908@linutronix.de	2019-08-01 17:43:15 +02:00
Thomas Gleixner	b744948725	hrtimer: Remove task argument from hrtimer_init_sleeper() ... All callers hand in 'current' and that's the only task pointer which actually makes sense. Remove the task argument and set current in the function. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20190726185752.791885290@linutronix.de	2019-07-30 23:57:51 +02:00
Josef Bacik	a6d81d30d3	wait: add wq_has_single_sleeper helper ... rq-qos sits in the io path so we want to take locks as sparingly as possible. To accomplish this we try not to take the waitqueue head lock unless we are sure we need to go to sleep, and we have an optimization to make sure that we don't starve out existing waiters. Since we check if there are existing waiters locklessly we need to be able to update our view of the waitqueue list after we've added ourselves to the waitqueue. Accomplish this by adding this helper to see if there is more than just ourselves on the list. Reviewed-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>	2019-07-18 10:20:13 -06:00
Tobin C. Harding	8c1007fdc7	docs: Add colon clearing sphinx warning ... Sphinx emits various warnings all caused by a missing colon before code block: WARNING: Block quote ends without a blank line; unexpected unindent. ERROR: Unexpected indentation. WARNING: Block quote ends without a blank line; unexpected unindent. Add the colon, clearing sphinx warnings. Signed-off-by: Tobin C. Harding <tobin@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>	2019-04-09 15:14:49 -06:00
Hugo Lefeuvre	2b9c2a4859	sched/wait: Use freezable_schedule() when possible ... Replace 'schedule(); try_to_freeze();' with a call to freezable_schedule(). Tasks calling freezable_schedule() set the PF_FREEZER_SKIP flag before calling schedule(). Unlike tasks calling schedule(); try_to_freeze() tasks calling freezable_schedule() are not awaken by try_to_freeze_tasks(). Instead they call try_to_freeze() when they wake up if the freeze is still underway. It is not a problem since sleeping tasks can't do anything which isn't allowed for a frozen task while sleeping. The result is a potential performance gain during freeze, since less tasks have to be awaken. For instance on a bare Debian vm running a 4.19 stable kernel, the number of tasks skipped in freeze_task() went up from 12 without the patch to 32 with the patch (out of 448), an increase of > x2.5. Signed-off-by: Hugo Lefeuvre <hle@owl.eu.com> Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20190207200352.GA27859@behemoth.owl.eu.com.local Signed-off-by: Ingo Molnar <mingo@kernel.org>	2019-02-11 08:34:04 +01:00
Nicholas Bellinger	25ab0bc334	scsi: sched/wait: Add wait_event_lock_irq_timeout for TASK_UNINTERRUPTIBLE usage ... Short of reverting commit 00d909a107 ("scsi: target: Make the session shutdown code also wait for commands that are being aborted") for v4.19, target-core needs a wait_event_t macro can be executed using TASK_UNINTERRUPTIBLE to function correctly with existing fabric drivers that expect to run with signals pending during session shutdown and active se_cmd I/O quiesce. The most notable is iscsi-target/iser-target, while ibmvscsi_tgt invokes session shutdown logic from userspace via configfs attribute that could also potentially have signals pending. So go ahead and introduce wait_event_lock_irq_timeout() to achieve this, and update + rename __wait_event_lock_irq_timeout() to make it accept 'state' as a parameter. Fixes: 00d909a107 ("scsi: target: Make the session shutdown code also wait for commands that are being aborted") Cc: <stable@vger.kernel.org> # v4.19+ Cc: Bart Van Assche <bvanassche@acm.org> Cc: Mike Christie <mchristi@redhat.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Sagi Grimberg <sagi@grimberg.me> Cc: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Reviewed-by: Bryant G. Ly <bly@catalogicsoftware.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>	2018-10-16 00:11:13 -04:00
NeilBrown	0957a2c1d9	sched/wait: add wait_event_idle() functions. ... The new TASK_IDLE state (TASK_UNINTERRUPTIBLE | __TASK_NOLOAD) is not much used. One way to make it easier to use is to add wait_event*() family functions that make use of it. This patch adds: wait_event_idle() wait_event_idle_timeout() wait_event_idle_exclusive() wait_event_idle_exclusive_timeout() This set was chosen because lustre needs them before it can discard its own l_wait_event() macro. Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: James Simmons <jsimmons@infradead.org> Signed-off-by: NeilBrown <neilb@suse.com> Reviewed-by: Patrick Farrell <paf@cray.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2018-02-16 15:19:09 +01:00
Al Viro	3ad6f93e98	annotate poll-related wait keys ... __poll_t is also used as wait key in some waitqueues. Verify that wait_..._poll() gets __poll_t as key and provide a helper for wakeup functions to get back to that __poll_t value. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2017-11-27 16:19:54 -05:00
Greg Kroah-Hartman	b24413180f	License cleanup: add SPDX GPL-2.0 license identifier to files with no license ... Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2017-11-02 11:10:55 +01:00
Tim Chen	11a19c7b09	sched/wait: Introduce wakeup boomark in wake_up_page_bit ... Now that we have added breaks in the wait queue scan and allow bookmark on scan position, we put this logic in the wake_up_page_bit function. We can have very long page wait list in large system where multiple pages share the same wait list. We break the wake up walk here to allow other cpus a chance to access the list, and not to disable the interrupts when traversing the list for too long. This reduces the interrupt and rescheduling latency, and excessive page wait queue lock hold time. [ v2: Remove bookmark_wake_function ] Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2017-09-14 09:56:18 -07:00
Tim Chen	2554db9165	sched/wait: Break up long wake list walk ... We encountered workloads that have very long wake up list on large systems. A waker takes a long time to traverse the entire wake list and execute all the wake functions. We saw page wait list that are up to 3700+ entries long in tests of large 4 and 8 socket systems. It took 0.8 sec to traverse such list during wake up. Any other CPU that contends for the list spin lock will spin for a long time. It is a result of the numa balancing migration of hot pages that are shared by many threads. Multiple CPUs waking are queued up behind the lock, and the last one queued has to wait until all CPUs did all the wakeups. The page wait list is traversed with interrupt disabled, which caused various problems. This was the original cause that triggered the NMI watch dog timer in: https://patchwork.kernel.org/patch/9800303/ . Only extending the NMI watch dog timer there helped. This patch bookmarks the waker's scan position in wake list and break the wake up walk, to allow access to the list before the waker resume its walk down the rest of the wait list. It lowers the interrupt and rescheduling latency. This patch also provides a performance boost when combined with the next patch to break up page wakeup list walk. We saw 22% improvement in the will-it-scale file pread2 test on a Xeon Phi system running 256 threads. [ v2: Merged in Linus' changes to remove the bookmark_wake_function, and simply access to flags. ] Reported-by: Kan Liang <kan.liang@intel.com> Tested-by: Kan Liang <kan.liang@intel.com> Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2017-09-14 09:56:17 -07:00
Luis R. Rodriguez	8ada92799e	wait: add wait_event_killable_timeout() ... These are the few pending fixes I have queued up for v4.13-final. One is a a generic regression fix for recursive loops on kmod and the other one is a trivial print out correction. During the v4.13 development we assumed that recursive kmod loops were no longer possible. Clearly that is not true. The regression fix makes use of a new killable wait. We use a killable wait to be paranoid in how signals might be sent to modprobe and only accept a proper SIGKILL. The signal will only be available to userspace to issue *iff* a thread has already entered a wait state, and that happens only if we've already throttled after 50 kmod threads have been hit. Note that although it may seem excessive to trigger a failure afer 5 seconds if all kmod thread remain busy, prior to the series of changes that went into v4.13 we would actually *always* fatally fail any request which came in if the limit was already reached. The new waiting implemented in v4.13 actually gives us *more* breathing room -- the wait for 5 seconds is a wait for *any* kmod thread to finish. We give up and fail *iff* no kmod thread has finished and they're *all* running straight for 5 consecutive seconds. If 50 kmod threads are running consecutively for 5 seconds something else must be really bad. Recursive loops with kmod are bad but they're also hard to implement properly as a selftest without currently fooling current userspace tools like kmod [1]. For instance kmod will complain when you run depmod if it finds a recursive loop with symbol dependency between modules as such this type of recursive loop cannot go upstream as the modules_install target will fail after running depmod. These tests already exist on userspace kmod upstream though (refer to the testsuite/module-playground/mod-loop-*.c files). The same is not true if request_module() is used though, or worst if aliases are used. Likewise the issue with 64-bit kernels booting 32-bit userspace without a binfmt handler built-in is also currently not detected and proactively avoided by userspace kmod tools, or kconfig for all architectures. Although we could complain in the kernel when some of these individual recursive issues creep up, proactively avoiding these situations in userspace at build time is what we should keep striving for. Lastly, since recursive loops could happen with kmod it may mean recursive loops may also be possible with other kernel usermode helpers, this should be investigated and long term if we can come up with a more sensible generic solution even better! [0] https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git/log/?h=20170809-kmod-for-v4.13-final [1] https://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git This patch (of 3): This wait is similar to wait_event_interruptible_timeout() but only accepts SIGKILL interrupt signal. Other signals are ignored. Link: http://lkml.kernel.org/r/20170809234635.13443-2-mcgrof@kernel.org Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Kees Cook <keescook@chromium.org> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Jessica Yu <jeyu@redhat.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Michal Marek <mmarek@suse.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Miroslav Benes <mbenes@suse.cz> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Matt Redfearn <matt.redfearn@imgtec.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Colin Ian King <colin.king@canonical.com> Cc: Daniel Mentz <danielmentz@google.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Matt Redfearn <matt.redfearn@imgetc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2017-08-18 15:32:01 -07:00
Jonathan Corbet	6c423f5751	sched/wait: Clean up some documentation warnings ... A couple of kerneldoc comments in <linux/wait.h> had incorrect names for macro parameters, with this unsightly result: ./include/linux/wait.h:555: warning: No description found for parameter 'wq' ./include/linux/wait.h:555: warning: Excess function parameter 'wq_head' description in 'wait_event_interruptible_hrtimeout' ./include/linux/wait.h:759: warning: No description found for parameter 'wq_head' ./include/linux/wait.h:759: warning: Excess function parameter 'wq' description in 'wait_event_killable' Correct the comments and kill the warnings. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-doc@vger.kernel.org Link: http://lkml.kernel.org/r/20170724135800.769c4042@lwn.net Signed-off-by: Ingo Molnar <mingo@kernel.org>	2017-07-25 11:17:02 +02:00
Ingo Molnar	2055da9738	sched/wait: Disambiguate wq_entry->task_list and wq_head->task_list naming ... So I've noticed a number of instances where it was not obvious from the code whether ->task_list was for a wait-queue head or a wait-queue entry. Furthermore, there's a number of wait-queue users where the lists are not for 'tasks' but other entities (poll tables, etc.), in which case the 'task_list' name is actively confusing. To clear this all up, name the wait-queue head and entry list structure fields unambiguously: struct wait_queue_head::task_list => ::head struct wait_queue_entry::task_list => ::entry For example, this code: rqw->wait.task_list.next != &wait->task_list ... is was pretty unclear (to me) what it's doing, while now it's written this way: rqw->wait.head.next != &wait->entry ... which makes it pretty clear that we are iterating a list until we see the head. Other examples are: list_for_each_entry_safe(pos, next, &x->task_list, task_list) { list_for_each_entry(wq, &fence->wait.task_list, task_list) { ... where it's unclear (to me) what we are iterating, and during review it's hard to tell whether it's trying to walk a wait-queue entry (which would be a bug), while now it's written as: list_for_each_entry_safe(pos, next, &x->head, entry) { list_for_each_entry(wq, &fence->wait.head, entry) { Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>	2017-06-20 12:19:14 +02:00
Ingo Molnar	5dd43ce2f6	sched/wait: Split out the wait_bit*() APIs from <linux/wait.h> into <linux/wait_bit.h> ... The wait_bit*() types and APIs are mixed into wait.h, but they are a pretty orthogonal extension of wait-queues. Furthermore, only about 50 kernel files use these APIs, while over 1000 use the regular wait-queue functionality. So clean up the main wait.h by moving the wait-bit functionality out of it, into a separate .h and .c file: include/linux/wait_bit.h for types and APIs kernel/sched/wait_bit.c for the implementation Update all header dependencies. This reduces the size of wait.h rather significantly, by about 30%. Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>	2017-06-20 12:19:09 +02:00
Ingo Molnar	4b1c480bfa	sched/wait: Re-adjust macro line continuation backslashes in <linux/wait.h> ... So there's over 300 CPP macro line-continuation backslashes in include/linux/wait.h (!!), which are aligned vertically to make the macro maze a bit more navigable. The recent renames and reorganization broke some of them, and instead of re-aligning them in every patch (which would add a lot of stylistic noise to the patches and make them less readable), I just ignored them - and fixed them up in a single go in this patch. Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>	2017-06-20 12:18:29 +02:00
Ingo Molnar	939798a072	sched/wait: Improve the bit-wait API parameter names in the API function prototypes ... Contrary to kernel tradition, most of the bit-wait function prototypes in <linux/wait.h> don't fully define the parameter names, they only list the types: int out_of_line_wait_on_bit_timeout(void *, int, wait_bit_action_f *, unsigned, unsigned long); ... which is pretty passive-aggressive in terms of informing the reader about what these functions are doing. Fill in the parameter names, such as: int out_of_line_wait_on_bit_timeout(void *word, int, wait_bit_action_f *action, unsigned int mode, unsigned long timeout); Also turn spurious (and inconsistently utilized) cases of 'unsigned' into 'unsigned int'. Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>	2017-06-20 12:18:29 +02:00
Ingo Molnar	76c85ddc46	sched/wait: Standardize wait_bit_queue naming ... So wait-bit-queue head variables are often named: struct wait_bit_queue *q ... which is a bit ambiguous and super confusing, because they clearly suggest wait-queue head semantics and behavior (they rhyme with the old wait_queue_t *q naming), while they are extended wait-queue _entries_, not heads! They are misnomers in two ways: - the 'wait_bit_queue' leaves open the question of whether it's an entry or a head - the 'q' parameter and local variable naming falsely implies that it's a 'queue' - while it's an entry. This resulted in sometimes confusing cases such as: finish_wait(wq, &q->wait); where the 'q' is not a wait-queue head, but a wait-bit-queue entry. So improve this all by standardizing wait-bit-queue nomenclature similar to wait-queue head naming: struct wait_bit_queue => struct wait_bit_queue_entry q => wbq_entry Which makes it all a much clearer: struct wait_bit_queue_entry *wbq_entry ... and turns the former confusing piece of code into: finish_wait(wq_head, &wbq_entry->wq_entry; which IMHO makes it apparently clear what we are doing, without having to analyze the context of the code: we are adding a wait-queue entry to a regular wait-queue head, which entry is embedded in a wait-bit-queue entry. I'm not a big fan of acronyms, but repeating wait_bit_queue_entry in field and local variable names is too long, so Hopefully it's clear enough that 'wq_' prefixes stand for wait-queues, while 'wbq_' prefixes stand for wait-bit-queues. Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>	2017-06-20 12:18:29 +02:00
Ingo Molnar	2141713616	sched/wait: Standardize 'struct wait_bit_queue' wait-queue entry field name ... Rename 'struct wait_bit_queue::wait' to ::wq_entry, to more clearly name it as a wait-queue entry. Propagate it to a couple of usage sites where the wait-bit-queue internals are exposed. Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>	2017-06-20 12:18:28 +02:00
Ingo Molnar	9d9d676f59	sched/wait: Standardize internal naming of wait-queue heads ... The wait-queue head parameters and variables are named in a couple of ways, we have the following variants currently: wait_queue_head_t *q wait_queue_head_t *wq wait_queue_head_t *head In particular the 'wq' naming is ambiguous in the sense whether it's a wait-queue head or entry name - as entries were often named 'wait'. ( Not to mention the confusion of any readers coming over from workqueue-land. ) Standardize all this around a single, unambiguous parameter and variable name: struct wait_queue_head *wq_head which is easy to grep for and also rhymes nicely with the wait-queue entry naming: struct wait_queue_entry *wq_entry Also rename: struct __wait_queue_head => struct wait_queue_head ... and use this struct type to migrate from typedefs usage to 'struct' usage, which is more in line with existing kernel practices. Don't touch any external users and preserve the main wait_queue_head_t typedef. Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>	2017-06-20 12:18:28 +02:00
Ingo Molnar	50816c4899	sched/wait: Standardize internal naming of wait-queue entries ... So the various wait-queue entry variables in include/linux/wait.h and kernel/sched/wait.c are named in a colorfully inconsistent way: wait_queue_entry_t *wait wait_queue_entry_t *__wait (even in plain C code!) wait_queue_entry_t *q (!) wait_queue_entry_t *new (making anyone who knows C++ cringe) wait_queue_entry_t *old I think part of the reason for the inconsistency is the constant apparent confusion about what a wait queue 'head' versus 'entry' is. ( Some of the documentation talks about a 'wait descriptor', which is the wait-queue entry itself - further adding to the confusion. ) The most common name is 'wait', but that in itself is somewhat ambiguous as well, as it does not really make it clear whether it's a wait-queue entry or head. To improve all this name the wait-queue entry structure parameters and variables consistently and push through this naming into all the wait.h and wait.c code: struct wait_queue_entry *wq_entry The 'wq_' prefix makes it easy to grep for, and we also use the opportunity to move away from the typedef to a plain 'struct' naming: in the kernel we typically reserve typedefs for cases where a C structure is really small and somewhat opaque - such as pte_t. wait-queue entries are neither small nor opaque, so use the more standard 'struct xxx_entry' list management code nomenclature instead. ( We don't touch external users, and we preserve the typedef as well for actual wait-queue users, to reduce unnecessary churn. ) Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>	2017-06-20 12:18:27 +02:00
Ingo Molnar	ac6424b981	sched/wait: Rename wait_queue_t => wait_queue_entry_t ... Rename: wait_queue_t => wait_queue_entry_t 'wait_queue_t' was always a slight misnomer: its name implies that it's a "queue", but in reality it's a queue *entry*. The 'real' queue is the wait queue head, which had to carry the name. Start sorting this out by renaming it to 'wait_queue_entry_t'. This also allows the real structure name 'struct __wait_queue' to lose its double underscore and become 'struct wait_queue_entry', which is the more canonical nomenclature for such data types. Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>	2017-06-20 12:18:27 +02:00
Linus Torvalds	bd0f9b356d	sched/headers: fix up header file dependency on <linux/sched/signal.h> ... The scheduler header file split and cleanups ended up exposing a few nasty header file dependencies, and in particular it showed how we in <linux/wait.h> ended up depending on "signal_pending()", which now comes from <linux/sched/signal.h>. That's a very subtle and annoying dependency, which already caused a semantic merge conflict (see commit e58bc92783 "Pull overlayfs updates from Miklos Szeredi", which added that fixup in the merge commit). It turns out that we can avoid this dependency _and_ improve code generation by moving the guts of the fairly nasty helper #define __wait_event_interruptible_locked() to out-of-line code. The code that includes the signal_pending() check is all in the slow-path where we actually go to sleep waiting for the event anyway, so using a helper function is the right thing to do. Using a helper function is also what we already did for the non-locked versions, see the "__wait_event*()" macros and the "prepare_to_wait*()" set of helper functions. We might want to try to unify all these macro games, we have a _lot_ of subtly different wait-event loops. But this is the minimal patch to fix the annoying header dependency. Acked-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2017-03-08 10:36:03 -08:00
Ingo Molnar	5b825c3af1	sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h> ... Add #include <linux/cred.h> dependencies to all .c files rely on sched.h doing that for them. Note that even if the count where we need to add extra headers seems high, it's still a net win, because <linux/sched.h> is included in over 2,200 files ... Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>	2017-03-02 08:42:31 +01:00
Thomas Gleixner	2456e85535	ktime: Get rid of the union ... ktime is a union because the initial implementation stored the time in scalar nanoseconds on 64 bit machine and in a endianess optimized timespec variant for 32bit machines. The Y2038 cleanup removed the timespec variant and switched everything to scalar nanoseconds. The union remained, but become completely pointless. Get rid of the union and just keep ktime_t as simple typedef of type s64. The conversion was done with coccinelle and some manual mopping up. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org>	2016-12-25 17:21:22 +01:00
Oleg Nesterov	0176beaffb	sched/wait: Introduce init_wait_entry() ... The partial initialization of wait_queue_t in prepare_to_wait_event() looks ugly. This was done to shrink .text, but we can simply add the new helper which does the full initialization and shrink the compiled code a bit more. And. This way prepare_to_wait_event() can have more users. In particular we are ready to remove the signal_pending_state() checks from wait_bit_action_f helpers and change __wait_on_bit_lock() to use prepare_to_wait_event(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Neil Brown <neilb@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20160906140055.GA6167@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>	2016-09-30 10:54:03 +02:00
Oleg Nesterov	eaf9ef5224	sched/wait: Avoid abort_exclusive_wait() in __wait_on_bit_lock() ... __wait_on_bit_lock() doesn't need abort_exclusive_wait() too. Right now it can't use prepare_to_wait_event() (see the next change), but it can do the additional finish_wait() if action() fails. abort_exclusive_wait() no longer has callers, remove it. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Neil Brown <neilb@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20160906140053.GA6164@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>	2016-09-30 10:54:03 +02:00
Oleg Nesterov	b1ea06a90f	sched/wait: Avoid abort_exclusive_wait() in ___wait_event() ... ___wait_event() doesn't really need abort_exclusive_wait(), we can simply change prepare_to_wait_event() to remove the waiter from q->task_list if it was interrupted. This simplifies the code/logic, and this way prepare_to_wait_event() can have more users, see the next change. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Neil Brown <neilb@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20160908164815.GA18801@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> -- include/linux/wait.h | 7 +------ kernel/sched/wait.c | 35 +++++++++++++++++++++++++---------- 2 files changed, 26 insertions(+), 16 deletions(-)	2016-09-30 10:53:44 +02:00
Oleg Nesterov	38a3e1fc1d	sched/wait: Fix abort_exclusive_wait(), it should pass TASK_NORMAL to wake_up() ... Otherwise this logic only works if mode is "compatible" with another exclusive waiter. If some wq has both TASK_INTERRUPTIBLE and TASK_UNINTERRUPTIBLE waiters, abort_exclusive_wait() won't wait an uninterruptible waiter. The main user is __wait_on_bit_lock() and currently it is fine but only because TASK_KILLABLE includes TASK_UNINTERRUPTIBLE and we do not have lock_page_interruptible() yet. Just use TASK_NORMAL and remove the "mode" arg from abort_exclusive_wait(). Yes, this means that (say) wake_up_interruptible() can wake up the non- interruptible waiter(s), but I think this is fine. And in fact I think that abort_exclusive_wait() must die, see the next change. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Neil Brown <neilb@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20160906140047.GA6157@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>	2016-09-30 10:53:19 +02:00
Al Viro	6a0fb30673	new helper: wait_event_killable_exclusive() ... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2016-07-19 03:08:07 -04:00
Stafford Horne	f4bcfa1da6	sched/wait: Fix wait_event_freezable() documentation ... I noticed the comment label 'wait_event' was wrong. Signed-off-by: Stafford Horne <shorne@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1456234768-24933-1-git-send-email-shorne@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>	2016-02-24 09:09:45 +01:00
Linus Torvalds	aee3bfa330	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next ... Pull networking updates from Davic Miller: 1) Support busy polling generically, for all NAPI drivers. From Eric Dumazet. 2) Add byte/packet counter support to nft_ct, from Floriani Westphal. 3) Add RSS/XPS support to mvneta driver, from Gregory Clement. 4) Implement IPV6_HDRINCL socket option for raw sockets, from Hannes Frederic Sowa. 5) Add support for T6 adapter to cxgb4 driver, from Hariprasad Shenai. 6) Add support for VLAN device bridging to mlxsw switch driver, from Ido Schimmel. 7) Add driver for Netronome NFP4000/NFP6000, from Jakub Kicinski. 8) Provide hwmon interface to mlxsw switch driver, from Jiri Pirko. 9) Reorganize wireless drivers into per-vendor directories just like we do for ethernet drivers. From Kalle Valo. 10) Provide a way for administrators "destroy" connected sockets via the SOCK_DESTROY socket netlink diag operation. From Lorenzo Colitti. 11) Add support to add/remove multicast routes via netlink, from Nikolay Aleksandrov. 12) Make TCP keepalive settings per-namespace, from Nikolay Borisov. 13) Add forwarding and packet duplication facilities to nf_tables, from Pablo Neira Ayuso. 14) Dead route support in MPLS, from Roopa Prabhu. 15) TSO support for thunderx chips, from Sunil Goutham. 16) Add driver for IBM's System i/p VNIC protocol, from Thomas Falcon. 17) Rationalize, consolidate, and more completely document the checksum offloading facilities in the networking stack. From Tom Herbert. 18) Support aborting an ongoing scan in mac80211/cfg80211, from Vidyullatha Kanchanapally. 19) Use per-bucket spinlock for bpf hash facility, from Tom Leiming. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1375 commits) net: bnxt: always return values from _bnxt_get_max_rings net: bpf: reject invalid shifts phonet: properly unshare skbs in phonet_rcv() dwc_eth_qos: Fix dma address for multi-fragment skbs phy: remove an unneeded condition mdio: remove an unneed condition mdio_bus: NULL dereference on allocation error net: Fix typo in netdev_intersect_features net: freescale: mac-fec: Fix build error from phy_device API change net: freescale: ucc_geth: Fix build error from phy_device API change bonding: Prevent IPv6 link local address on enslaved devices IB/mlx5: Add flow steering support net/mlx5_core: Export flow steering API net/mlx5_core: Make ipv4/ipv6 location more clear net/mlx5_core: Enable flow steering support for the IB driver net/mlx5_core: Initialize namespaces only when supported by device net/mlx5_core: Set priority attributes net/mlx5_core: Connect flow tables net/mlx5_core: Introduce modify flow table command net/mlx5_core: Managing root flow table ...	2016-01-12 18:57:02 -08:00
Ingo Molnar	567bee2803	Merge branch 'sched/urgent' into sched/core, to pick up fixes before merging new patches ... Signed-off-by: Ingo Molnar <mingo@kernel.org>	2016-01-06 11:02:29 +01:00
David S. Miller	b3e0d3d7ba	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net ... Conflicts: drivers/net/geneve.c Here we had an overlapping change, where in 'net' the extraneous stats bump was being removed whilst in 'net-next' the final argument to udp_tunnel6_xmit_skb() was being changed. Signed-off-by: David S. Miller <davem@davemloft.net>	2015-12-17 22:08:28 -05:00
Peter Zijlstra	dfd01f0260	sched/wait: Fix the signal handling fix ... Jan Stancek reported that I wrecked things for him by fixing things for Vladimir :/ His report was due to an UNINTERRUPTIBLE wait getting -EINTR, which should not be possible, however my previous patch made this possible by unconditionally checking signal_pending(). We cannot use current->state as was done previously, because the instruction after the store to that variable it can be changed. We must instead pass the initial state along and use that. Fixes: 68985633bc ("sched/wait: Fix signal handling in bit wait helpers") Reported-by: Jan Stancek <jstancek@redhat.com> Reported-by: Chris Mason <clm@fb.com> Tested-by: Jan Stancek <jstancek@redhat.com> Tested-by: Vladimir Murzin <vladimir.murzin@arm.com> Tested-by: Chris Mason <clm@fb.com> Reviewed-by: Paul Turner <pjt@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: tglx@linutronix.de Cc: Oleg Nesterov <oleg@redhat.com> Cc: hpa@zytor.com Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2015-12-13 14:30:59 -08:00
Herbert Xu	1ce0bf50ae	net: Generalise wq_has_sleeper helper ... The memory barrier in the helper wq_has_sleeper is needed by just about every user of waitqueue_active. This patch generalises it by making it take a wait_queue_head_t directly. The existing helper is renamed to skwq_has_sleeper. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>	2015-11-30 14:47:33 -05:00