86f9bee9c0b90b2f7661607bfbb30ca52777e3b3
102 Commits
| Author | SHA1 | Message | Date | |
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Greg Kroah-Hartman
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33740c9227 |
Merge 5.10.69 into android12-5.10-lts
Changes in 5.10.69 PCI: pci-bridge-emul: Add PCIe Root Capabilities Register PCI: aardvark: Fix reporting CRS value console: consume APC, DM, DCS s390/pci_mmio: fully validate the VMA before calling follow_pte() ARM: Qualify enabling of swiotlb_init() ARM: 9077/1: PLT: Move struct plt_entries definition to header ARM: 9078/1: Add warn suppress parameter to arm_gen_branch_link() ARM: 9079/1: ftrace: Add MODULE_PLTS support ARM: 9098/1: ftrace: MODULE_PLT: Fix build problem without DYNAMIC_FTRACE Revert "net/mlx5: Register to devlink ingress VLAN filter trap" sctp: validate chunk size in __rcv_asconf_lookup sctp: add param size validation for SCTP_PARAM_SET_PRIMARY staging: rtl8192u: Fix bitwise vs logical operator in TranslateRxSignalStuff819xUsb() coredump: fix memleak in dump_vma_snapshot() um: virtio_uml: fix memory leak on init failures dmaengine: acpi: Avoid comparison GSI with Linux vIRQ perf test: Fix bpf test sample mismatch reporting tools lib: Adopt memchr_inv() from kernel perf tools: Allow build-id with trailing zeros thermal/drivers/exynos: Fix an error code in exynos_tmu_probe() 9p/trans_virtio: Remove sysfs file on probe failure prctl: allow to setup brk for et_dyn executables nilfs2: use refcount_dec_and_lock() to fix potential UAF profiling: fix shift-out-of-bounds bugs PM: sleep: core: Avoid setting power.must_resume to false pwm: lpc32xx: Don't modify HW state in .probe() after the PWM chip was registered pwm: mxs: Don't modify HW state in .probe() after the PWM chip was registered dmaengine: idxd: fix wq slot allocation index check platform/chrome: sensorhub: Add trace events for sample platform/chrome: cros_ec_trace: Fix format warnings ceph: allow ceph_put_mds_session to take NULL or ERR_PTR ceph: cancel delayed work instead of flushing on mdsc teardown Kconfig.debug: drop selecting non-existing HARDLOCKUP_DETECTOR_ARCH tools/bootconfig: Fix tracing_on option checking in ftrace2bconf.sh thermal/core: Fix thermal_cooling_device_register() prototype drm/amdgpu: Disable PCIE_DPM on Intel RKL Platform drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION() dma-buf: DMABUF_MOVE_NOTIFY should depend on DMA_SHARED_BUFFER parisc: Move pci_dev_is_behind_card_dino to where it is used iommu/amd: Relocate GAMSup check to early_enable_iommus dmaengine: idxd: depends on !UML dmaengine: sprd: Add missing MODULE_DEVICE_TABLE dmaengine: ioat: depends on !UML dmaengine: xilinx_dma: Set DMA mask for coherent APIs ceph: request Fw caps before updating the mtime in ceph_write_iter ceph: remove the capsnaps when removing caps ceph: lockdep annotations for try_nonblocking_invalidate btrfs: update the bdev time directly when closing btrfs: fix lockdep warning while mounting sprout fs nilfs2: fix memory leak in nilfs_sysfs_create_device_group nilfs2: fix NULL pointer in nilfs_##name##_attr_release nilfs2: fix memory leak in nilfs_sysfs_create_##name##_group nilfs2: fix memory leak in nilfs_sysfs_delete_##name##_group nilfs2: fix memory leak in nilfs_sysfs_create_snapshot_group nilfs2: fix memory leak in nilfs_sysfs_delete_snapshot_group habanalabs: add validity check for event ID received from F/W pwm: img: Don't modify HW state in .remove() callback pwm: rockchip: Don't modify HW state in .remove() callback pwm: stm32-lp: Don't modify HW state in .remove() callback blk-throttle: fix UAF by deleteing timer in blk_throtl_exit() blk-mq: allow 4x BLK_MAX_REQUEST_COUNT at blk_plug for multiple_queues rtc: rx8010: select REGMAP_I2C sched/idle: Make the idle timer expire in hard interrupt context drm/nouveau/nvkm: Replace -ENOSYS with -ENODEV Linux 5.10.69 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I982349e3a65b83e92e9b808154bf8c84d094f1d6 |
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Sebastian Andrzej Siewior
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83a3cb200e |
sched/idle: Make the idle timer expire in hard interrupt context
[ Upstream commit 9848417926353daa59d2b05eb26e185063dbac6e ] The intel powerclamp driver will setup a per-CPU worker with RT priority. The worker will then invoke play_idle() in which it remains in the idle poll loop until it is stopped by the timer it started earlier. That timer needs to expire in hard interrupt context on PREEMPT_RT. Otherwise the timer will expire in ksoftirqd as a SOFT timer but that task won't be scheduled on the CPU because its priority is lower than the priority of the worker which is in the idle loop. Always expire the idle timer in hard interrupt context. Reported-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20210906113034.jgfxrjdvxnjqgtmc@linutronix.de Signed-off-by: Sasha Levin <sashal@kernel.org> |
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Greg Kroah-Hartman
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d8c7f0a3cd |
Merge 5.10.20 into android12-5.10
Changes in 5.10.20 vmlinux.lds.h: add DWARF v5 sections vdpa/mlx5: fix param validation in mlx5_vdpa_get_config() debugfs: be more robust at handling improper input in debugfs_lookup() debugfs: do not attempt to create a new file before the filesystem is initalized scsi: libsas: docs: Remove notify_ha_event() scsi: qla2xxx: Fix mailbox Ch erroneous error kdb: Make memory allocations more robust w1: w1_therm: Fix conversion result for negative temperatures PCI: qcom: Use PHY_REFCLK_USE_PAD only for ipq8064 PCI: Decline to resize resources if boot config must be preserved virt: vbox: Do not use wait_event_interruptible when called from kernel context bfq: Avoid false bfq queue merging ALSA: usb-audio: Fix PCM buffer allocation in non-vmalloc mode MIPS: vmlinux.lds.S: add missing PAGE_ALIGNED_DATA() section vmlinux.lds.h: Define SANTIZER_DISCARDS with CONFIG_GCOV_KERNEL=y random: fix the RNDRESEEDCRNG ioctl ALSA: pcm: Call sync_stop at disconnection ALSA: pcm: Assure sync with the pending stop operation at suspend ALSA: pcm: Don't call sync_stop if it hasn't been stopped drm/i915/gt: One more flush for Baytrail clear residuals ath10k: Fix error handling in case of CE pipe init failure Bluetooth: btqcomsmd: Fix a resource leak in error handling paths in the probe function Bluetooth: hci_uart: Fix a race for write_work scheduling Bluetooth: Fix initializing response id after clearing struct arm64: dts: renesas: beacon kit: Fix choppy Bluetooth Audio arm64: dts: renesas: beacon: Fix audio-1.8V pin enable ARM: dts: exynos: correct PMIC interrupt trigger level on Artik 5 ARM: dts: exynos: correct PMIC interrupt trigger level on Monk ARM: dts: exynos: correct PMIC interrupt trigger level on Rinato ARM: dts: exynos: correct PMIC interrupt trigger level on Spring ARM: dts: exynos: correct PMIC interrupt trigger level on Arndale Octa ARM: dts: exynos: correct PMIC interrupt trigger level on Odroid XU3 family arm64: dts: exynos: correct PMIC interrupt trigger level on TM2 arm64: dts: exynos: correct PMIC interrupt trigger level on Espresso memory: mtk-smi: Fix PM usage counter unbalance in mtk_smi ops Bluetooth: hci_qca: Fix memleak in qca_controller_memdump staging: vchiq: Fix bulk userdata handling staging: vchiq: Fix bulk transfers on 64-bit builds arm64: dts: qcom: msm8916-samsung-a5u: Fix iris compatible net: stmmac: dwmac-meson8b: fix enabling the timing-adjustment clock bpf: Add bpf_patch_call_args prototype to include/linux/bpf.h bpf: Avoid warning when re-casting __bpf_call_base into __bpf_call_base_args firmware: arm_scmi: Fix call site of scmi_notification_exit arm64: dts: allwinner: A64: properly connect USB PHY to port 0 arm64: dts: allwinner: H6: properly connect USB PHY to port 0 arm64: dts: allwinner: Drop non-removable from SoPine/LTS SD card arm64: dts: allwinner: H6: Allow up to 150 MHz MMC bus frequency arm64: dts: allwinner: A64: Limit MMC2 bus frequency to 150 MHz arm64: dts: qcom: msm8916-samsung-a2015: Fix sensors cpufreq: brcmstb-avs-cpufreq: Free resources in error path cpufreq: brcmstb-avs-cpufreq: Fix resource leaks in ->remove() arm64: dts: rockchip: rk3328: Add clock_in_out property to gmac2phy node ACPICA: Fix exception code class checks usb: gadget: u_audio: Free requests only after callback arm64: dts: qcom: sdm845-db845c: Fix reset-pin of ov8856 node soc: qcom: socinfo: Fix an off by one in qcom_show_pmic_model() soc: ti: pm33xx: Fix some resource leak in the error handling paths of the probe function staging: media: atomisp: Fix size_t format specifier in hmm_alloc() debug statemenet Bluetooth: drop HCI device reference before return Bluetooth: Put HCI device if inquiry procedure interrupts memory: ti-aemif: Drop child node when jumping out loop ARM: dts: Configure missing thermal interrupt for 4430 usb: dwc2: Do not update data length if it is 0 on inbound transfers usb: dwc2: Abort transaction after errors with unknown reason usb: dwc2: Make "trimming xfer length" a debug message staging: rtl8723bs: wifi_regd.c: Fix incorrect number of regulatory rules x86/MSR: Filter MSR writes through X86_IOC_WRMSR_REGS ioctl too arm64: dts: renesas: beacon: Fix EEPROM compatible value can: mcp251xfd: mcp251xfd_probe(): fix errata reference ARM: dts: armada388-helios4: assign pinctrl to LEDs ARM: dts: armada388-helios4: assign pinctrl to each fan arm64: dts: armada-3720-turris-mox: rename u-boot mtd partition to a53-firmware opp: Correct debug message in _opp_add_static_v2() Bluetooth: btusb: Fix memory leak in btusb_mtk_wmt_recv soc: qcom: ocmem: don't return NULL in of_get_ocmem arm64: dts: msm8916: Fix reserved and rfsa nodes unit address arm64: dts: meson: fix broken wifi node for Khadas VIM3L iwlwifi: mvm: set enabled in the PPAG command properly ARM: s3c: fix fiq for clang IAS optee: simplify i2c access staging: wfx: fix possible panic with re-queued frames ARM: at91: use proper asm syntax in pm_suspend ath10k: Fix suspicious RCU usage warning in ath10k_wmi_tlv_parse_peer_stats_info() ath10k: Fix lockdep assertion warning in ath10k_sta_statistics ath11k: fix a locking bug in ath11k_mac_op_start() soc: aspeed: snoop: Add clock control logic iwlwifi: mvm: fix the type we use in the PPAG table validity checks iwlwifi: mvm: store PPAG enabled/disabled flag properly iwlwifi: mvm: send stored PPAG command instead of local iwlwifi: mvm: assign SAR table revision to the command later iwlwifi: mvm: don't check if CSA event is running before removing bpf_lru_list: Read double-checked variable once without lock iwlwifi: pnvm: set the PNVM again if it was already loaded iwlwifi: pnvm: increment the pointer before checking the TLV ath9k: fix data bus crash when setting nf_override via debugfs selftests/bpf: Convert test_xdp_redirect.sh to bash ibmvnic: Set to CLOSED state even on error bnxt_en: reverse order of TX disable and carrier off bnxt_en: Fix devlink info's stored fw.psid version format. xen/netback: fix spurious event detection for common event case dpaa2-eth: fix memory leak in XDP_REDIRECT net: phy: consider that suspend2ram may cut off PHY power net/mlx5e: Don't change interrupt moderation params when DIM is enabled net/mlx5e: Change interrupt moderation channel params also when channels are closed net/mlx5: Fix health error state handling net/mlx5e: Replace synchronize_rcu with synchronize_net net/mlx5e: kTLS, Use refcounts to free kTLS RX priv context net/mlx5: Disable devlink reload for multi port slave device net/mlx5: Disallow RoCE on multi port slave device net/mlx5: Disallow RoCE on lag device net/mlx5: Disable devlink reload for lag devices net/mlx5e: CT: manage the lifetime of the ct entry object net/mlx5e: Check tunnel offload is required before setting SWP mac80211: fix potential overflow when multiplying to u32 integers libbpf: Ignore non function pointer member in struct_ops bpf: Fix an unitialized value in bpf_iter bpf, devmap: Use GFP_KERNEL for xdp bulk queue allocation bpf: Fix bpf_fib_lookup helper MTU check for SKB ctx selftests: mptcp: fix ACKRX debug message tcp: fix SO_RCVLOWAT related hangs under mem pressure net: axienet: Handle deferred probe on clock properly cxgb4/chtls/cxgbit: Keeping the max ofld immediate data size same in cxgb4 and ulds b43: N-PHY: Fix the update of coef for the PHY revision >= 3case bpf: Clear subreg_def for global function return values ibmvnic: add memory barrier to protect long term buffer ibmvnic: skip send_request_unmap for timeout reset net: dsa: felix: perform teardown in reverse order of setup net: dsa: felix: don't deinitialize unused ports net: phy: mscc: adding LCPLL reset to VSC8514 net: amd-xgbe: Reset the PHY rx data path when mailbox command timeout net: amd-xgbe: Fix NETDEV WATCHDOG transmit queue timeout warning net: amd-xgbe: Reset link when the link never comes back net: amd-xgbe: Fix network fluctuations when using 1G BELFUSE SFP net: mvneta: Remove per-cpu queue mapping for Armada 3700 net: enetc: fix destroyed phylink dereference during unbind tty: convert tty_ldisc_ops 'read()' function to take a kernel pointer tty: implement read_iter fbdev: aty: SPARC64 requires FB_ATY_CT drm/gma500: Fix error return code in psb_driver_load() gma500: clean up error handling in init drm/fb-helper: Add missed unlocks in setcmap_legacy() drm/panel: mantix: Tweak init sequence drm/vc4: hdmi: Take into account the clock doubling flag in atomic_check crypto: sun4i-ss - linearize buffers content must be kept crypto: sun4i-ss - fix kmap usage crypto: arm64/aes-ce - really hide slower algos when faster ones are enabled hwrng: ingenic - Fix a resource leak in an error handling path media: allegro: Fix use after free on error kcsan: Rewrite kcsan_prandom_u32_max() without prandom_u32_state() drm: rcar-du: Fix PM reference leak in rcar_cmm_enable() drm: rcar-du: Fix crash when using LVDS1 clock for CRTC drm: rcar-du: Fix the return check of of_parse_phandle and of_find_device_by_node drm/amdgpu: Fix macro name _AMDGPU_TRACE_H_ in preprocessor if condition MIPS: c-r4k: Fix section mismatch for loongson2_sc_init MIPS: lantiq: Explicitly compare LTQ_EBU_PCC_ISTAT against 0 drm/virtio: make sure context is created in gem open drm/fourcc: fix Amlogic format modifier masks media: ipu3-cio2: Build only for x86 media: i2c: ov5670: Fix PIXEL_RATE minimum value media: imx: Unregister csc/scaler only if registered media: imx: Fix csc/scaler unregister media: mtk-vcodec: fix error return code in vdec_vp9_decode() media: camss: missing error code in msm_video_register() media: vsp1: Fix an error handling path in the probe function media: em28xx: Fix use-after-free in em28xx_alloc_urbs media: media/pci: Fix memleak in empress_init media: tm6000: Fix memleak in tm6000_start_stream media: aspeed: fix error return code in aspeed_video_setup_video() ASoC: cs42l56: fix up error handling in probe ASoC: qcom: qdsp6: Move frontend AIFs to q6asm-dai evm: Fix memleak in init_desc crypto: bcm - Rename struct device_private to bcm_device_private sched/fair: Avoid stale CPU util_est value for schedutil in task dequeue drm/sun4i: tcon: fix inverted DCLK polarity media: imx7: csi: Fix regression for parallel cameras on i.MX6UL media: imx7: csi: Fix pad link validation media: ti-vpe: cal: fix write to unallocated memory MIPS: properly stop .eh_frame generation MIPS: Compare __SYNC_loongson3_war against 0 drm/tegra: Fix reference leak when pm_runtime_get_sync() fails drm/amdgpu: toggle on DF Cstate after finishing xgmi injection bsg: free the request before return error code macintosh/adb-iop: Use big-endian autopoll mask drm/amd/display: Fix 10/12 bpc setup in DCE output bit depth reduction. drm/amd/display: Fix HDMI deep color output for DCE 6-11. media: software_node: Fix refcounts in software_node_get_next_child() media: lmedm04: Fix misuse of comma media: vidtv: psi: fix missing crc for PMT media: atomisp: Fix a buffer overflow in debug code media: qm1d1c0042: fix error return code in qm1d1c0042_init() media: cx25821: Fix a bug when reallocating some dma memory media: mtk-vcodec: fix argument used when DEBUG is defined media: pxa_camera: declare variable when DEBUG is defined media: uvcvideo: Accept invalid bFormatIndex and bFrameIndex values sched/eas: Don't update misfit status if the task is pinned f2fs: compress: fix potential deadlock ASoC: qcom: lpass-cpu: Remove bit clock state check ASoC: SOF: Intel: hda: cancel D0i3 work during runtime suspend perf/arm-cmn: Fix PMU instance naming perf/arm-cmn: Move IRQs when migrating context mtd: parser: imagetag: fix error codes in bcm963xx_parse_imagetag_partitions() crypto: talitos - Work around SEC6 ERRATA (AES-CTR mode data size error) crypto: talitos - Fix ctr(aes) on SEC1 drm/nouveau: bail out of nouveau_channel_new if channel init fails mm: proc: Invalidate TLB after clearing soft-dirty page state ata: ahci_brcm: Add back regulators management ASoC: cpcap: fix microphone timeslot mask ASoC: codecs: add missing max_register in regmap config mtd: parsers: afs: Fix freeing the part name memory in failure f2fs: fix to avoid inconsistent quota data drm/amdgpu: Prevent shift wrapping in amdgpu_read_mask() f2fs: fix a wrong condition in __submit_bio ASoC: qcom: Fix typo error in HDMI regmap config callbacks KVM: nSVM: Don't strip host's C-bit from guest's CR3 when reading PDPTRs drm/mediatek: Check if fb is null Drivers: hv: vmbus: Avoid use-after-free in vmbus_onoffer_rescind() ASoC: Intel: sof_sdw: add missing TGL_HDMI quirk for Dell SKU 0A5E ASoC: Intel: sof_sdw: add missing TGL_HDMI quirk for Dell SKU 0A3E locking/lockdep: Avoid unmatched unlock ASoC: qcom: lpass: Fix i2s ctl register bit map ASoC: rt5682: Fix panic in rt5682_jack_detect_handler happening during system shutdown ASoC: SOF: debug: Fix a potential issue on string buffer termination btrfs: clarify error returns values in __load_free_space_cache btrfs: fix double accounting of ordered extent for subpage case in btrfs_invalidapge KVM: x86: Restore all 64 bits of DR6 and DR7 during RSM on x86-64 s390/zcrypt: return EIO when msg retry limit reached drm/vc4: hdmi: Move hdmi reset to bind drm/vc4: hdmi: Fix register offset with longer CEC messages drm/vc4: hdmi: Fix up CEC registers drm/vc4: hdmi: Restore cec physical address on reconnect drm/vc4: hdmi: Compute the CEC clock divider from the clock rate drm/vc4: hdmi: Update the CEC clock divider on HSM rate change drm/lima: fix reference leak in lima_pm_busy drm/dp_mst: Don't cache EDIDs for physical ports hwrng: timeriomem - Fix cooldown period calculation crypto: ecdh_helper - Ensure 'len >= secret.len' in decode_key() io_uring: fix possible deadlock in io_uring_poll nvmet-tcp: fix receive data digest calculation for multiple h2cdata PDUs nvmet-tcp: fix potential race of tcp socket closing accept_work nvme-multipath: set nr_zones for zoned namespaces nvmet: remove extra variable in identify ns nvmet: set status to 0 in case for invalid nsid ASoC: SOF: sof-pci-dev: add missing Up-Extreme quirk ima: Free IMA measurement buffer on error ima: Free IMA measurement buffer after kexec syscall ASoC: simple-card-utils: Fix device module clock fs/jfs: fix potential integer overflow on shift of a int jffs2: fix use after free in jffs2_sum_write_data() ubifs: Fix memleak in ubifs_init_authentication ubifs: replay: Fix high stack usage, again ubifs: Fix error return code in alloc_wbufs() irqchip/imx: IMX_INTMUX should not default to y, unconditionally smp: Process pending softirqs in flush_smp_call_function_from_idle() drm/amdgpu/display: remove hdcp_srm sysfs on device removal capabilities: Don't allow writing ambiguous v3 file capabilities HSI: Fix PM usage counter unbalance in ssi_hw_init power: supply: cpcap: Add missing IRQF_ONESHOT to fix regression clk: meson: clk-pll: fix initializing the old rate (fallback) for a PLL clk: meson: clk-pll: make "ret" a signed integer clk: meson: clk-pll: propagate the error from meson_clk_pll_set_rate() selftests/powerpc: Make the test check in eeh-basic.sh posix compliant regulator: qcom-rpmh-regulator: add pm8009-1 chip revision arm64: dts: qcom: qrb5165-rb5: fix pm8009 regulators quota: Fix memory leak when handling corrupted quota file i2c: iproc: handle only slave interrupts which are enabled i2c: iproc: update slave isr mask (ISR_MASK_SLAVE) i2c: iproc: handle master read request spi: cadence-quadspi: Abort read if dummy cycles required are too many clk: sunxi-ng: h6: Fix CEC clock clk: renesas: r8a779a0: Remove non-existent S2 clock clk: renesas: r8a779a0: Fix parent of CBFUSA clock HID: core: detect and skip invalid inputs to snto32() RDMA/siw: Fix handling of zero-sized Read and Receive Queues. dmaengine: fsldma: Fix a resource leak in the remove function dmaengine: fsldma: Fix a resource leak in an error handling path of the probe function dmaengine: owl-dma: Fix a resource leak in the remove function dmaengine: hsu: disable spurious interrupt mfd: bd9571mwv: Use devm_mfd_add_devices() power: supply: cpcap-charger: Fix missing power_supply_put() power: supply: cpcap-battery: Fix missing power_supply_put() power: supply: cpcap-charger: Fix power_supply_put on null battery pointer fdt: Properly handle "no-map" field in the memory region of/fdt: Make sure no-map does not remove already reserved regions RDMA/rtrs: Extend ibtrs_cq_qp_create RDMA/rtrs-srv: Release lock before call into close_sess RDMA/rtrs-srv: Use sysfs_remove_file_self for disconnect RDMA/rtrs-clt: Set mininum limit when create QP RDMA/rtrs: Call kobject_put in the failure path RDMA/rtrs-srv: Fix missing wr_cqe RDMA/rtrs-clt: Refactor the failure cases in alloc_clt RDMA/rtrs-srv: Init wr_cnt as 1 power: reset: at91-sama5d2_shdwc: fix wkupdbc mask rtc: s5m: select REGMAP_I2C dmaengine: idxd: set DMA channel to be private power: supply: fix sbs-charger build, needs REGMAP_I2C clocksource/drivers/ixp4xx: Select TIMER_OF when needed clocksource/drivers/mxs_timer: Add missing semicolon when DEBUG is defined spi: imx: Don't print error on -EPROBEDEFER RDMA/mlx5: Use the correct obj_id upon DEVX TIR creation IB/mlx5: Add mutex destroy call to cap_mask_mutex mutex clk: sunxi-ng: h6: Fix clock divider range on some clocks platform/chrome: cros_ec_proto: Use EC_HOST_EVENT_MASK not BIT platform/chrome: cros_ec_proto: Add LID and BATTERY to default mask regulator: axp20x: Fix reference cout leak watch_queue: Drop references to /dev/watch_queue certs: Fix blacklist flag type confusion regulator: s5m8767: Fix reference count leak spi: atmel: Put allocated master before return regulator: s5m8767: Drop regulators OF node reference power: supply: axp20x_usb_power: Init work before enabling IRQs power: supply: smb347-charger: Fix interrupt usage if interrupt is unavailable regulator: core: Avoid debugfs: Directory ... already present! error isofs: release buffer head before return watchdog: intel-mid_wdt: Postpone IRQ handler registration till SCU is ready auxdisplay: ht16k33: Fix refresh rate handling objtool: Fix error handling for STD/CLD warnings objtool: Fix retpoline detection in asm code objtool: Fix ".cold" section suffix check for newer versions of GCC scsi: lpfc: Fix ancient double free iommu: Switch gather->end to the inclusive end IB/umad: Return EIO in case of when device disassociated IB/umad: Return EPOLLERR in case of when device disassociated KVM: PPC: Make the VMX instruction emulation routines static powerpc/47x: Disable 256k page size powerpc/time: Enable sched clock for irqtime mmc: owl-mmc: Fix a resource leak in an error handling path and in the remove function mmc: sdhci-sprd: Fix some resource leaks in the remove function mmc: usdhi6rol0: Fix a resource leak in the error handling path of the probe mmc: renesas_sdhi_internal_dmac: Fix DMA buffer alignment from 8 to 128-bytes ARM: 9046/1: decompressor: Do not clear SCTLR.nTLSMD for ARMv7+ cores i2c: qcom-geni: Store DMA mapping data in geni_i2c_dev struct amba: Fix resource leak for drivers without .remove iommu: Move iotlb_sync_map out from __iommu_map iommu: Properly pass gfp_t in _iommu_map() to avoid atomic sleeping IB/mlx5: Return appropriate error code instead of ENOMEM IB/cm: Avoid a loop when device has 255 ports tracepoint: Do not fail unregistering a probe due to memory failure rtc: zynqmp: depend on HAS_IOMEM perf tools: Fix DSO filtering when not finding a map for a sampled address perf vendor events arm64: Fix Ampere eMag event typo RDMA/rxe: Fix coding error in rxe_recv.c RDMA/rxe: Fix coding error in rxe_rcv_mcast_pkt RDMA/rxe: Correct skb on loopback path spi: stm32: properly handle 0 byte transfer mfd: altera-sysmgr: Fix physical address storing more mfd: wm831x-auxadc: Prevent use after free in wm831x_auxadc_read_irq() powerpc/pseries/dlpar: handle ibm, configure-connector delay status powerpc/8xx: Fix software emulation interrupt clk: qcom: gcc-msm8998: Fix Alpha PLL type for all GPLLs kunit: tool: fix unit test cleanup handling kselftests: dmabuf-heaps: Fix Makefile's inclusion of the kernel's usr/include dir RDMA/hns: Fixed wrong judgments in the goto branch RDMA/siw: Fix calculation of tx_valid_cpus size RDMA/hns: Fix type of sq_signal_bits RDMA/hns: Disable RQ inline by default clk: divider: fix initialization with parent_hw spi: pxa2xx: Fix the controller numbering for Wildcat Point powerpc/uaccess: Avoid might_fault() when user access is enabled powerpc/kuap: Restore AMR after replaying soft interrupts regulator: qcom-rpmh: fix pm8009 ldo7 clk: aspeed: Fix APLL calculate formula from ast2600-A2 selftests/ftrace: Update synthetic event syntax errors perf symbols: Use (long) for iterator for bfd symbols regulator: bd718x7, bd71828, Fix dvs voltage levels spi: dw: Avoid stack content exposure spi: Skip zero-length transfers in spi_transfer_one_message() printk: avoid prb_first_valid_seq() where possible perf symbols: Fix return value when loading PE DSO nfsd: register pernet ops last, unregister first svcrdma: Hold private mutex while invoking rdma_accept() ceph: fix flush_snap logic after putting caps RDMA/hns: Fixes missing error code of CMDQ RDMA/ucma: Fix use-after-free bug in ucma_create_uevent RDMA/rtrs-srv: Fix stack-out-of-bounds RDMA/rtrs: Only allow addition of path to an already established session RDMA/rtrs-srv: fix memory leak by missing kobject free RDMA/rtrs-srv-sysfs: fix missing put_device RDMA/rtrs-srv: Do not pass a valid pointer to PTR_ERR() Input: sur40 - fix an error code in sur40_probe() perf record: Fix continue profiling after draining the buffer perf intel-pt: Fix missing CYC processing in PSB perf intel-pt: Fix premature IPC perf intel-pt: Fix IPC with CYC threshold perf test: Fix unaligned access in sample parsing test Input: elo - fix an error code in elo_connect() sparc64: only select COMPAT_BINFMT_ELF if BINFMT_ELF is set sparc: fix led.c driver when PROC_FS is not enabled Input: zinitix - fix return type of zinitix_init_touch() ARM: 9065/1: OABI compat: fix build when EPOLL is not enabled misc: eeprom_93xx46: Fix module alias to enable module autoprobe phy: rockchip-emmc: emmc_phy_init() always return 0 phy: cadence-torrent: Fix error code in cdns_torrent_phy_probe() misc: eeprom_93xx46: Add module alias to avoid breaking support for non device tree users PCI: rcar: Always allocate MSI addresses in 32bit space soundwire: cadence: fix ACK/NAK handling pwm: rockchip: Enable APB clock during register access while probing pwm: rockchip: rockchip_pwm_probe(): Remove superfluous clk_unprepare() pwm: rockchip: Eliminate potential race condition when probing PCI: xilinx-cpm: Fix reference count leak on error path VMCI: Use set_page_dirty_lock() when unregistering guest memory PCI: Align checking of syscall user config accessors mei: hbm: call mei_set_devstate() on hbm stop response drm/msm: Fix MSM_INFO_GET_IOVA with carveout drm/msm/dsi: Correct io_start for MSM8994 (20nm PHY) drm/msm/mdp5: Fix wait-for-commit for cmd panels drm/msm: Fix race of GPU init vs timestamp power management. drm/msm: Fix races managing the OOB state for timestamp vs timestamps. drm/msm/dp: trigger unplug event in msm_dp_display_disable vfio/iommu_type1: Populate full dirty when detach non-pinned group vfio/iommu_type1: Fix some sanity checks in detach group vfio-pci/zdev: fix possible segmentation fault issue ext4: fix potential htree index checksum corruption phy: USB_LGM_PHY should depend on X86 coresight: etm4x: Skip accessing TRCPDCR in save/restore nvmem: core: Fix a resource leak on error in nvmem_add_cells_from_of() nvmem: core: skip child nodes not matching binding soundwire: bus: use sdw_update_no_pm when initializing a device soundwire: bus: use sdw_write_no_pm when setting the bus scale registers soundwire: export sdw_write/read_no_pm functions soundwire: bus: fix confusion on device used by pm_runtime misc: fastrpc: fix incorrect usage of dma_map_sgtable remoteproc/mediatek: acknowledge watchdog IRQ after handled regmap: sdw: use _no_pm functions in regmap_read/write ext: EXT4_KUNIT_TESTS should depend on EXT4_FS instead of selecting it mailbox: sprd: correct definition of SPRD_OUTBOX_FIFO_FULL device-dax: Fix default return code of range_parse() PCI: pci-bridge-emul: Fix array overruns, improve safety PCI: cadence: Fix DMA range mapping early return error i40e: Fix flow for IPv6 next header (extension header) i40e: Add zero-initialization of AQ command structures i40e: Fix overwriting flow control settings during driver loading i40e: Fix addition of RX filters after enabling FW LLDP agent i40e: Fix VFs not created Take mmap lock in cacheflush syscall nios2: fixed broken sys_clone syscall i40e: Fix add TC filter for IPv6 octeontx2-af: Fix an off by one in rvu_dbg_qsize_write() pwm: iqs620a: Fix overflow and optimize calculations vfio/type1: Use follow_pte() ice: report correct max number of TCs ice: Account for port VLAN in VF max packet size calculation ice: Fix state bits on LLDP mode switch ice: update the number of available RSS queues net: stmmac: fix CBS idleslope and sendslope calculation net/mlx4_core: Add missed mlx4_free_cmd_mailbox() PCI: rockchip: Make 'ep-gpios' DT property optional vxlan: move debug check after netdev unregister wireguard: device: do not generate ICMP for non-IP packets wireguard: kconfig: use arm chacha even with no neon ocfs2: fix a use after free on error mm: memcontrol: fix NR_ANON_THPS accounting in charge moving mm: memcontrol: fix slub memory accounting mm/memory.c: fix potential pte_unmap_unlock pte error mm/hugetlb: fix potential double free in hugetlb_register_node() error path mm/hugetlb: suppress wrong warning info when alloc gigantic page mm/compaction: fix misbehaviors of fast_find_migrateblock() r8169: fix jumbo packet handling on RTL8168e NFSv4: Fixes for nfs4_bitmask_adjust() KVM: SVM: Intercept INVPCID when it's disabled to inject #UD KVM: x86/mmu: Expand collapsible SPTE zap for TDP MMU to ZONE_DEVICE and HugeTLB pages arm64: Add missing ISB after invalidating TLB in __primary_switch i2c: brcmstb: Fix brcmstd_send_i2c_cmd condition i2c: exynos5: Preserve high speed master code mm,thp,shmem: make khugepaged obey tmpfs mount flags mm: fix memory_failure() handling of dax-namespace metadata mm/rmap: fix potential pte_unmap on an not mapped pte proc: use kvzalloc for our kernel buffer csky: Fix a size determination in gpr_get() scsi: bnx2fc: Fix Kconfig warning & CNIC build errors scsi: sd: sd_zbc: Don't pass GFP_NOIO to kvcalloc block: reopen the device in blkdev_reread_part ide/falconide: Fix module unload scsi: sd: Fix Opal support blk-settings: align max_sectors on "logical_block_size" boundary soundwire: intel: fix possible crash when no device is detected ACPI: property: Fix fwnode string properties matching ACPI: configfs: add missing check after configfs_register_default_group() cpufreq: ACPI: Set cpuinfo.max_freq directly if max boost is known HID: logitech-dj: add support for keyboard events in eQUAD step 4 Gaming HID: wacom: Ignore attempts to overwrite the touch_max value from HID Input: raydium_ts_i2c - do not send zero length Input: xpad - add support for PowerA Enhanced Wired Controller for Xbox Series X|S Input: joydev - prevent potential read overflow in ioctl Input: i8042 - add ASUS Zenbook Flip to noselftest list media: mceusb: Fix potential out-of-bounds shift USB: serial: option: update interface mapping for ZTE P685M usb: musb: Fix runtime PM race in musb_queue_resume_work usb: dwc3: gadget: Fix setting of DEPCFG.bInterval_m1 usb: dwc3: gadget: Fix dep->interval for fullspeed interrupt USB: serial: ftdi_sio: fix FTX sub-integer prescaler USB: serial: pl2303: fix line-speed handling on newer chips USB: serial: mos7840: fix error code in mos7840_write() USB: serial: mos7720: fix error code in mos7720_write() phy: lantiq: rcu-usb2: wait after clock enable ALSA: fireface: fix to parse sync status register of latter protocol ALSA: hda: Add another CometLake-H PCI ID ALSA: hda/hdmi: Drop bogus check at closing a stream ALSA: hda/realtek: modify EAPD in the ALC886 ALSA: hda/realtek: Quirk for HP Spectre x360 14 amp setup MIPS: Ingenic: Disable HPTLB for D0 XBurst CPUs too MIPS: Support binutils configured with --enable-mips-fix-loongson3-llsc=yes MIPS: VDSO: Use CLANG_FLAGS instead of filtering out '--target=' Revert "MIPS: Octeon: Remove special handling of CONFIG_MIPS_ELF_APPENDED_DTB=y" Revert "bcache: Kill btree_io_wq" bcache: Give btree_io_wq correct semantics again bcache: Move journal work to new flush wq Revert "drm/amd/display: Update NV1x SR latency values" drm/amd/display: Add FPU wrappers to dcn21_validate_bandwidth() drm/amd/display: Remove Assert from dcn10_get_dig_frontend drm/amd/display: Add vupdate_no_lock interrupts for DCN2.1 drm/amdkfd: Fix recursive lock warnings drm/amdgpu: Set reference clock to 100Mhz on Renoir (v2) drm/nouveau/kms: handle mDP connectors drm/modes: Switch to 64bit maths to avoid integer overflow drm/sched: Cancel and flush all outstanding jobs before finish. drm/panel: kd35t133: allow using non-continuous dsi clock drm/rockchip: Require the YTR modifier for AFBC ASoC: siu: Fix build error by a wrong const prefix selinux: fix inconsistency between inode_getxattr and inode_listsecurity erofs: initialized fields can only be observed after bit is set tpm_tis: Fix check_locality for correct locality acquisition tpm_tis: Clean up locality release KEYS: trusted: Fix incorrect handling of tpm_get_random() KEYS: trusted: Fix migratable=1 failing KEYS: trusted: Reserve TPM for seal and unseal operations btrfs: do not cleanup upper nodes in btrfs_backref_cleanup_node btrfs: do not warn if we can't find the reloc root when looking up backref btrfs: add asserts for deleting backref cache nodes btrfs: abort the transaction if we fail to inc ref in btrfs_copy_root btrfs: fix reloc root leak with 0 ref reloc roots on recovery btrfs: splice remaining dirty_bg's onto the transaction dirty bg list btrfs: handle space_info::total_bytes_pinned inside the delayed ref itself btrfs: account for new extents being deleted in total_bytes_pinned btrfs: fix extent buffer leak on failure to copy root drm/i915/gt: Flush before changing register state drm/i915/gt: Correct surface base address for renderclear crypto: arm64/sha - add missing module aliases crypto: aesni - prevent misaligned buffers on the stack crypto: michael_mic - fix broken misalignment handling crypto: sun4i-ss - checking sg length is not sufficient crypto: sun4i-ss - IV register does not work on A10 and A13 crypto: sun4i-ss - handle BigEndian for cipher crypto: sun4i-ss - initialize need_fallback soc: samsung: exynos-asv: don't defer early on not-supported SoCs soc: samsung: exynos-asv: handle reading revision register error seccomp: Add missing return in non-void function arm64: ptrace: Fix seccomp of traced syscall -1 (NO_SYSCALL) misc: rtsx: init of rts522a add OCP power off when no card is present drivers/misc/vmw_vmci: restrict too big queue size in qp_host_alloc_queue pstore: Fix typo in compression option name dts64: mt7622: fix slow sd card access arm64: dts: agilex: fix phy interface bit shift for gmac1 and gmac2 staging/mt7621-dma: mtk-hsdma.c->hsdma-mt7621.c staging: gdm724x: Fix DMA from stack staging: rtl8188eu: Add Edimax EW-7811UN V2 to device table floppy: reintroduce O_NDELAY fix media: i2c: max9286: fix access to unallocated memory media: ir_toy: add another IR Droid device media: ipu3-cio2: Fix mbus_code processing in cio2_subdev_set_fmt() media: marvell-ccic: power up the device on mclk enable media: smipcie: fix interrupt handling and IR timeout x86/virt: Eat faults on VMXOFF in reboot flows x86/reboot: Force all cpus to exit VMX root if VMX is supported x86/fault: Fix AMD erratum #91 errata fixup for user code x86/entry: Fix instrumentation annotation powerpc/prom: Fix "ibm,arch-vec-5-platform-support" scan rcu: Pull deferred rcuog wake up to rcu_eqs_enter() callers rcu/nocb: Perform deferred wake up before last idle's need_resched() check kprobes: Fix to delay the kprobes jump optimization arm64: Extend workaround for erratum 1024718 to all versions of Cortex-A55 iommu/arm-smmu-qcom: Fix mask extraction for bootloader programmed SMRs arm64: kexec_file: fix memory leakage in create_dtb() when fdt_open_into() fails arm64: uprobe: Return EOPNOTSUPP for AARCH32 instruction probing arm64 module: set plt* section addresses to 0x0 arm64: spectre: Prevent lockdep splat on v4 mitigation enable path riscv: Disable KSAN_SANITIZE for vDSO watchdog: qcom: Remove incorrect usage of QCOM_WDT_ENABLE_IRQ watchdog: mei_wdt: request stop on unregister coresight: etm4x: Handle accesses to TRCSTALLCTLR mtd: spi-nor: sfdp: Fix last erase region marking mtd: spi-nor: sfdp: Fix wrong erase type bitmask for overlaid region mtd: spi-nor: core: Fix erase type discovery for overlaid region mtd: spi-nor: core: Add erase size check for erase command initialization mtd: spi-nor: hisi-sfc: Put child node np on error path fs/affs: release old buffer head on error path seq_file: document how per-entry resources are managed. x86: fix seq_file iteration for pat/memtype.c mm: memcontrol: fix swap undercounting in cgroup2 mm: memcontrol: fix get_active_memcg return value hugetlb: fix update_and_free_page contig page struct assumption hugetlb: fix copy_huge_page_from_user contig page struct assumption mm/vmscan: restore zone_reclaim_mode ABI mm, compaction: make fast_isolate_freepages() stay within zone KVM: nSVM: fix running nested guests when npt=0 nvmem: qcom-spmi-sdam: Fix uninitialized pdev pointer module: Ignore _GLOBAL_OFFSET_TABLE_ when warning for undefined symbols mmc: sdhci-esdhc-imx: fix kernel panic when remove module mmc: sdhci-pci-o2micro: Bug fix for SDR104 HW tuning failure powerpc/32: Preserve cr1 in exception prolog stack check to fix build error powerpc/kexec_file: fix FDT size estimation for kdump kernel powerpc/32s: Add missing call to kuep_lock on syscall entry spmi: spmi-pmic-arb: Fix hw_irq overflow mei: fix transfer over dma with extended header mei: me: emmitsburg workstation DID mei: me: add adler lake point S DID mei: me: add adler lake point LP DID gpio: pcf857x: Fix missing first interrupt mfd: gateworks-gsc: Fix interrupt type printk: fix deadlock when kernel panic exfat: fix shift-out-of-bounds in exfat_fill_super() zonefs: Fix file size of zones in full condition kcmp: Support selection of SYS_kcmp without CHECKPOINT_RESTORE thermal: cpufreq_cooling: freq_qos_update_request() returns < 0 on error cpufreq: qcom-hw: drop devm_xxx() calls from init/exit hooks cpufreq: intel_pstate: Change intel_pstate_get_hwp_max() argument cpufreq: intel_pstate: Get per-CPU max freq via MSR_HWP_CAPABILITIES if available proc: don't allow async path resolution of /proc/thread-self components s390/vtime: fix inline assembly clobber list virtio/s390: implement virtio-ccw revision 2 correctly um: mm: check more comprehensively for stub changes um: defer killing userspace on page table update failures irqchip/loongson-pch-msi: Use bitmap_zalloc() to allocate bitmap f2fs: fix out-of-repair __setattr_copy() f2fs: enforce the immutable flag on open files f2fs: flush data when enabling checkpoint back sparc32: fix a user-triggerable oops in clear_user() spi: fsl: invert spisel_boot signal on MPC8309 spi: spi-synquacer: fix set_cs handling gfs2: fix glock confusion in function signal_our_withdraw gfs2: Don't skip dlm unlock if glock has an lvb gfs2: Lock imbalance on error path in gfs2_recover_one gfs2: Recursive gfs2_quota_hold in gfs2_iomap_end dm: fix deadlock when swapping to encrypted device dm table: fix iterate_devices based device capability checks dm table: fix DAX iterate_devices based device capability checks dm table: fix zoned iterate_devices based device capability checks dm writecache: fix performance degradation in ssd mode dm writecache: return the exact table values that were set dm writecache: fix writing beyond end of underlying device when shrinking dm era: Recover committed writeset after crash dm era: Update in-core bitset after committing the metadata dm era: Verify the data block size hasn't changed dm era: Fix bitset memory leaks dm era: Use correct value size in equality function of writeset tree dm era: Reinitialize bitset cache before digesting a new writeset dm era: only resize metadata in preresume drm/i915: Reject 446-480MHz HDMI clock on GLK kgdb: fix to kill breakpoints on initmem after boot ipv6: silence compilation warning for non-IPV6 builds net: icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending wireguard: selftests: test multiple parallel streams wireguard: queueing: get rid of per-peer ring buffers net: sched: fix police ext initialization net: qrtr: Fix memory leak in qrtr_tun_open net_sched: fix RTNL deadlock again caused by request_module() ARM: dts: aspeed: Add LCLK to lpc-snoop Linux 5.10.20 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I3fbcecd9413ce212dac68d5cc800c9457feba56a |
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Frederic Weisbecker
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e713bdd791 |
rcu/nocb: Perform deferred wake up before last idle's need_resched() check
commit 43789ef3f7d61aa7bed0cb2764e588fc990c30ef upstream.
Entering RCU idle mode may cause a deferred wake up of an RCU NOCB_GP
kthread (rcuog) to be serviced.
Usually a local wake up happening while running the idle task is handled
in one of the need_resched() checks carefully placed within the idle
loop that can break to the scheduler.
Unfortunately the call to rcu_idle_enter() is already beyond the last
generic need_resched() check and we may halt the CPU with a resched
request unhandled, leaving the task hanging.
Fix this with splitting the rcuog wakeup handling from rcu_idle_enter()
and place it before the last generic need_resched() check in the idle
loop. It is then assumed that no call to call_rcu() will be performed
after that in the idle loop until the CPU is put in low power mode.
Fixes:
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Sangmoon Kim
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18ebdc3746 |
ANDROID: sched: add vendor hooks for bad scheduling
Add hooks to gather data of bad scheduling and summarize it with other information. Bug: 177483057 Signed-off-by: Sangmoon Kim <sangmoon.kim@samsung.com> Change-Id: I08a7097b60dd8eebc5c0205b31c463a36f576121 |
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Peter Zijlstra
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58c644ba51 |
sched/idle: Fix arch_cpu_idle() vs tracing
We call arch_cpu_idle() with RCU disabled, but then use
local_irq_{en,dis}able(), which invokes tracing, which relies on RCU.
Switch all arch_cpu_idle() implementations to use
raw_local_irq_{en,dis}able() and carefully manage the
lockdep,rcu,tracing state like we do in entry.
(XXX: we really should change arch_cpu_idle() to not return with
interrupts enabled)
Reported-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lkml.kernel.org/r/20201120114925.594122626@infradead.org
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Joe Perches
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33def8498f |
treewide: Convert macro and uses of __section(foo) to __section("foo")
Use a more generic form for __section that requires quotes to avoid
complications with clang and gcc differences.
Remove the quote operator # from compiler_attributes.h __section macro.
Convert all unquoted __section(foo) uses to quoted __section("foo").
Also convert __attribute__((section("foo"))) uses to __section("foo")
even if the __attribute__ has multiple list entry forms.
Conversion done using the script at:
https://lore.kernel.org/lkml/75393e5ddc272dc7403de74d645e6c6e0f4e70eb.camel@perches.com/2-convert_section.pl
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@gooogle.com>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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||
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Peter Zijlstra
|
9864f5b594 |
cpuidle: Move trace_cpu_idle() into generic code
Remove trace_cpu_idle() from the arch_cpu_idle() implementations and put it in the generic code, right before disabling RCU. Gets rid of more trace_*_rcuidle() users. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Tested-by: Marco Elver <elver@google.com> Link: https://lkml.kernel.org/r/20200821085348.428433395@infradead.org |
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Peter Zijlstra
|
1098582a0f |
sched,idle,rcu: Push rcu_idle deeper into the idle path
Lots of things take locks, due to a wee bug, rcu_lockdep didn't notice
that the locking tracepoints were using RCU.
Push rcu_idle_{enter,exit}() as deep as possible into the idle paths,
this also resolves a lot of _rcuidle()/RCU_NONIDLE() usage.
Specifically, sched_clock_idle_wakeup_event() will use ktime which
will use seqlocks which will tickle lockdep, and
stop_critical_timings() uses lock.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Marco Elver <elver@google.com>
Link: https://lkml.kernel.org/r/20200821085348.310943801@infradead.org
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Peter Zijlstra
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faa2fd7cba | Merge branch 'sched/urgent' | ||
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Rafael J. Wysocki
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10e8b11eb3 |
cpuidle: Rearrange s2idle-specific idle state entry code
Implement call_cpuidle_s2idle() in analogy with call_cpuidle() for the s2idle-specific idle state entry and invoke it from cpuidle_idle_call() to make the s2idle-specific idle entry code path look more similar to the "regular" idle entry one. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Chen Yu <yu.c.chen@intel.com> |
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Steven Rostedt (VMware)
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a87e749e8f |
sched: Remove struct sched_class::next field
Now that the sched_class descriptors are defined in order via the linker script vmlinux.lds.h, there's no reason to have a "next" pointer to the previous priroity structure. The order of the sturctures can be aligned as an array, and used to index and find the next sched_class descriptor. Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20191219214558.845353593@goodmis.org |
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Steven Rostedt (VMware)
|
590d697963 |
sched: Force the address order of each sched class descriptor
In order to make a micro optimization in pick_next_task(), the order of the sched class descriptor address must be in the same order as their priority to each other. That is: &idle_sched_class < &fair_sched_class < &rt_sched_class < &dl_sched_class < &stop_sched_class In order to guarantee this order of the sched class descriptors, add each one into their own data section and force the order in the linker script. Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/157675913272.349305.8936736338884044103.stgit@localhost.localdomain |
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Dietmar Eggemann
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e3e76a6a04 |
sched/idle,stop: Remove .get_rr_interval from sched_class
The idle task and stop task sched_classes return 0 in this function.
The single call site in sched_rr_get_interval() calls
p->sched_class->get_rr_interval() only conditional in case it is
defined. Otherwise time_slice=0 will be used.
The deadline sched class does not define it. Commit
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Peter Zijlstra
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a148866489 |
sched: Replace rq::wake_list
The recent commit:
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Peter Zijlstra
|
b2a02fc43a |
smp: Optimize send_call_function_single_ipi()
Just like the ttwu_queue_remote() IPI, make use of _TIF_POLLING_NRFLAG to avoid sending IPIs to idle CPUs. [ mingo: Fix UP build bug. ] Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20200526161907.953304789@infradead.org |
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Hewenliang
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3e0de271ff |
idle: fix spelling mistake "iterrupts" -> "interrupts"
There is a spelling misake in comments of cpuidle_idle_call. Fix it. Signed-off-by: Hewenliang <hewenliang4@huawei.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: https://lkml.kernel.org/r/20200110025604.34373-1-hewenliang4@huawei.com |
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Linus Torvalds
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9e7a03233e |
Merge tag 'pm-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These include cpuidle changes to use nanoseconds (instead of
microseconds) as the unit of time and to simplify checks for disabled
idle states in the idle loop, some cpuidle fixes and governor updates,
assorted cpufreq updates (driver updates mostly and a few core fixes
and cleanups), devfreq updates (dominated by the tegra30 driver
changes), new CPU IDs for the RAPL power capping driver, relatively
minor updates of the generic power domains (genpd) and operation
performance points (OPP) frameworks, and assorted fixes and cleanups.
There are also two maintainer information updates: Chanwoo Choi will
be maintaining the devfreq subsystem going forward and Todd Brandt is
going to maintain the pm-graph utility (created by him).
Specifics:
- Use nanoseconds (instead of microseconds) as the unit of time in
the cpuidle core and simplify checks for disabled idle states in
the idle loop (Rafael Wysocki)
- Fix and clean up the teo cpuidle governor (Rafael Wysocki)
- Fix the cpuidle registration error code path (Zhenzhong Duan)
- Avoid excessive vmexits in the ACPI cpuidle driver (Yin Fengwei)
- Extend the idle injection infrastructure to be able to measure the
requested duration in nanoseconds and to allow an exit latency
limit for idle states to be specified (Daniel Lezcano)
- Fix cpufreq driver registration and clarify a comment in the
cpufreq core (Viresh Kumar)
- Add NULL checks to the show() and store() methods of sysfs
attributes exposed by cpufreq (Kai Shen)
- Update cpufreq drivers:
* Fix for a plain int as pointer warning from sparse in
intel_pstate (Jamal Shareef)
* Fix for a hardcoded number of CPUs and stack bloat in the
powernv driver (John Hubbard)
* Updates to the ti-cpufreq driver and DT files to support new
platforms and migrate bindings from opp-v1 to opp-v2 (Adam Ford,
H. Nikolaus Schaller)
* Merging of the arm_big_little and vexpress-spc drivers and
related cleanup (Sudeep Holla)
* Fix for imx's default speed grade value (Anson Huang)
* Minor cleanup of the s3c64xx driver (Nathan Chancellor)
* CPU speed bin detection fix for sun50i (Ondrej Jirman)
- Appoint Chanwoo Choi as the new devfreq maintainer.
- Update the devfreq core:
* Check NULL governor in available_governors_show sysfs to prevent
showing wrong governor information and fix a race condition
between devfreq_update_status() and trans_stat_show() (Leonard
Crestez)
* Add new 'interrupt-driven' flag for devfreq governors to allow
interrupt-driven governors to prevent the devfreq core from
polling devices for status (Dmitry Osipenko)
* Improve an error message in devfreq_add_device() (Matthias
Kaehlcke)
- Update devfreq drivers:
* tegra30 driver fixes and cleanups (Dmitry Osipenko)
* Removal of unused property from dt-binding documentation for the
exynos-bus driver (Kamil Konieczny)
* exynos-ppmu cleanup and DT bindings update (Lukasz Luba, Marek
Szyprowski)
- Add new CPU IDs for CometLake Mobile and Desktop to the Intel RAPL
power capping driver (Zhang Rui)
- Allow device initialization in the generic power domains (genpd)
framework to be more straightforward and clean it up (Ulf Hansson)
- Add support for adjusting OPP voltages at run time to the OPP
framework (Stephen Boyd)
- Avoid freeing memory that has never been allocated in the
hibernation core (Andy Whitcroft)
- Clean up function headers in a header file and coding style in the
wakeup IRQs handling code (Ulf Hansson, Xiaofei Tan)
- Clean up the SmartReflex adaptive voltage scaling (AVS) driver for
ARM (Ben Dooks, Geert Uytterhoeven)
- Wrap power management documentation to fit in 80 columns (Bjorn
Helgaas)
- Add pm-graph utility entry to MAINTAINERS (Todd Brandt)
- Update the cpupower utility:
* Fix the handling of set and info subcommands (Abhishek Goel)
* Fix build warnings (Nathan Chancellor)
* Improve mperf_monitor handling (Janakarajan Natarajan)"
* tag 'pm-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (83 commits)
PM: Wrap documentation to fit in 80 columns
cpuidle: Pass exit latency limit to cpuidle_use_deepest_state()
cpuidle: Allow idle injection to apply exit latency limit
cpuidle: Introduce cpuidle_driver_state_disabled() for driver quirks
cpuidle: teo: Avoid code duplication in conditionals
cpufreq: Register drivers only after CPU devices have been registered
cpuidle: teo: Avoid using "early hits" incorrectly
cpuidle: teo: Exclude cpuidle overhead from computations
PM / Domains: Convert to dev_to_genpd_safe() in genpd_syscore_switch()
mmc: tmio: Avoid boilerplate code in ->runtime_suspend()
PM / Domains: Implement the ->start() callback for genpd
PM / Domains: Introduce dev_pm_domain_start()
ARM: OMAP2+: SmartReflex: add omap_sr_pdata definition
PM / wakeirq: remove unnecessary parentheses
power: avs: smartreflex: Remove superfluous cast in debugfs_create_file() call
cpuidle: Use nanoseconds as the unit of time
PM / OPP: Support adjusting OPP voltages at runtime
PM / core: Clean up some function headers in power.h
cpufreq: Add NULL checks to show() and store() methods of cpufreq
cpufreq: intel_pstate: Fix plain int as pointer warning from sparse
...
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Rafael J. Wysocki
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6221403952 |
Merge branch 'pm-cpuidle'
* pm-cpuidle: cpuidle: Pass exit latency limit to cpuidle_use_deepest_state() cpuidle: Allow idle injection to apply exit latency limit cpuidle: Introduce cpuidle_driver_state_disabled() for driver quirks cpuidle: teo: Avoid code duplication in conditionals cpuidle: teo: Avoid using "early hits" incorrectly cpuidle: teo: Exclude cpuidle overhead from computations cpuidle: Use nanoseconds as the unit of time cpuidle: Consolidate disabled state checks ACPI: processor_idle: Skip dummy wait if kernel is in guest cpuidle: Do not unset the driver if it is there already cpuidle: teo: Fix "early hits" handling for disabled idle states cpuidle: teo: Consider hits and misses metrics of disabled states cpuidle: teo: Rename local variable in teo_select() cpuidle: teo: Ignore disabled idle states that are too deep |
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Daniel Lezcano
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5aa9ba6312 |
cpuidle: Pass exit latency limit to cpuidle_use_deepest_state()
Modify cpuidle_use_deepest_state() to take an additional exit latency limit argument to be passed to find_deepest_idle_state() and make cpuidle_idle_call() pass dev->forced_idle_latency_limit_ns to it for forced idle. Suggested-by: Rafael J. Wysocki <rafael@kernel.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> [ rjw: Rebase and rearrange code, subject & changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Daniel Lezcano
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c55b51a06b |
cpuidle: Allow idle injection to apply exit latency limit
In some cases it may be useful to specify an exit latency limit for the idle state to be used during CPU idle time injection. Instead of duplicating the information in struct cpuidle_device or propagating the latency limit in the call stack, replace the use_deepest_state field with forced_latency_limit_ns to represent that limit, so that the deepest idle state with exit latency within that limit is forced (i.e. no governors) when it is set. A zero exit latency limit for forced idle means to use governors in the usual way (analogous to use_deepest_state equal to "false" before this change). Additionally, add play_idle_precise() taking two arguments, the duration of forced idle and the idle state exit latency limit, both in nanoseconds, and redefine play_idle() as a wrapper around that new function. This change is preparatory, no functional impact is expected. Suggested-by: Rafael J. Wysocki <rafael@kernel.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> [ rjw: Subject, changelog, cpuidle_use_deepest_state() kerneldoc, whitespace ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Rafael J. Wysocki
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c1d51f684c |
cpuidle: Use nanoseconds as the unit of time
Currently, the cpuidle subsystem uses microseconds as the unit of time which (among other things) causes the idle loop to incur some integer division overhead for no clear benefit. In order to allow cpuidle to measure time in nanoseconds, add two new fields, exit_latency_ns and target_residency_ns, to represent the exit latency and target residency of an idle state in nanoseconds, respectively, to struct cpuidle_state and initialize them with the help of the corresponding values in microseconds provided by drivers. Additionally, change cpuidle_governor_latency_req() to return the idle state exit latency constraint in nanoseconds. Also meeasure idle state residency (last_residency_ns in struct cpuidle_device and time_ns in struct cpuidle_driver) in nanoseconds and update the cpuidle core and governors accordingly. However, the menu governor still computes typical intervals in microseconds to avoid integer overflows. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Doug Smythies <dsmythies@telus.net> Tested-by: Doug Smythies <dsmythies@telus.net> |
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Peter Zijlstra
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a0e813f26e |
sched/core: Further clarify sched_class::set_next_task()
It turns out there really is something special to the first
set_next_task() invocation. In specific the 'change' pattern really
should not cause balance callbacks.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bsegall@google.com
Cc: dietmar.eggemann@arm.com
Cc: juri.lelli@redhat.com
Cc: ktkhai@virtuozzo.com
Cc: mgorman@suse.de
Cc: qais.yousef@arm.com
Cc: qperret@google.com
Cc: rostedt@goodmis.org
Cc: valentin.schneider@arm.com
Cc: vincent.guittot@linaro.org
Fixes:
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Peter Zijlstra
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98c2f700ed |
sched/core: Simplify sched_class::pick_next_task()
Now that the indirect class call never uses the last two arguments of pick_next_task(), remove them. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: bsegall@google.com Cc: dietmar.eggemann@arm.com Cc: juri.lelli@redhat.com Cc: ktkhai@virtuozzo.com Cc: mgorman@suse.de Cc: qais.yousef@arm.com Cc: qperret@google.com Cc: rostedt@goodmis.org Cc: valentin.schneider@arm.com Cc: vincent.guittot@linaro.org Link: https://lkml.kernel.org/r/20191108131909.660595546@infradead.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Peter Zijlstra
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5d7d605642 |
sched/core: Optimize pick_next_task()
Ever since we moved the sched_class definitions into their own files,
the constant expression {fair,idle}_sched_class.pick_next_task() is
not in fact a compile time constant anymore and results in an indirect
call (barring LTO).
Fix that by exposing pick_next_task_{fair,idle}() directly, this gets
rid of the indirect call (and RETPOLINE) on the fast path.
Also remove the unlikely() from the idle case, it is in fact /the/ way
we select idle -- and that is a very common thing to do.
Performance for will-it-scale/sched_yield improves by 2% (as reported
by 0-day).
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bsegall@google.com
Cc: dietmar.eggemann@arm.com
Cc: juri.lelli@redhat.com
Cc: ktkhai@virtuozzo.com
Cc: mgorman@suse.de
Cc: qais.yousef@arm.com
Cc: qperret@google.com
Cc: rostedt@goodmis.org
Cc: valentin.schneider@arm.com
Cc: vincent.guittot@linaro.org
Link: https://lkml.kernel.org/r/20191108131909.603037345@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Peter Zijlstra
|
f488e1057b |
sched/core: Make pick_next_task_idle() more consistent
Only pick_next_task_fair() needs the @prev and @rf argument; these are required to implement the cpu-cgroup optimization. None of the other pick_next_task() methods need this. Make pick_next_task_idle() more consistent. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: bsegall@google.com Cc: dietmar.eggemann@arm.com Cc: juri.lelli@redhat.com Cc: ktkhai@virtuozzo.com Cc: mgorman@suse.de Cc: qais.yousef@arm.com Cc: qperret@google.com Cc: rostedt@goodmis.org Cc: valentin.schneider@arm.com Cc: vincent.guittot@linaro.org Link: https://lkml.kernel.org/r/20191108131909.545730862@infradead.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Peter Zijlstra
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6e2df0581f |
sched: Fix pick_next_task() vs 'change' pattern race
Commit |
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Nicholas Piggin
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13224794cb |
mm: remove quicklist page table caches
Patch series "mm: remove quicklist page table caches". A while ago Nicholas proposed to remove quicklist page table caches [1]. I've rebased his patch on the curren upstream and switched ia64 and sh to use generic versions of PTE allocation. [1] https://lore.kernel.org/linux-mm/20190711030339.20892-1-npiggin@gmail.com This patch (of 3): Remove page table allocator "quicklists". These have been around for a long time, but have not got much traction in the last decade and are only used on ia64 and sh architectures. The numbers in the initial commit look interesting but probably don't apply anymore. If anybody wants to resurrect this it's in the git history, but it's unhelpful to have this code and divergent allocator behaviour for minor archs. Also it might be better to instead make more general improvements to page allocator if this is still so slow. Link: http://lkml.kernel.org/r/1565250728-21721-2-git-send-email-rppt@linux.ibm.com Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
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77dcfe2b9e |
Merge tag 'pm-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These include a rework of the main suspend-to-idle code flow (related
to the handling of spurious wakeups), a switch over of several users
of cpufreq notifiers to QoS-based limits, a new devfreq driver for
Tegra20, a new cpuidle driver and governor for virtualized guests, an
extension of the wakeup sources framework to expose wakeup sources as
device objects in sysfs, and more.
Specifics:
- Rework the main suspend-to-idle control flow to avoid repeating
"noirq" device resume and suspend operations in case of spurious
wakeups from the ACPI EC and decouple the ACPI EC wakeups support
from the LPS0 _DSM support (Rafael Wysocki).
- Extend the wakeup sources framework to expose wakeup sources as
device objects in sysfs (Tri Vo, Stephen Boyd).
- Expose system suspend statistics in sysfs (Kalesh Singh).
- Introduce a new haltpoll cpuidle driver and a new matching governor
for virtualized guests wanting to do guest-side polling in the idle
loop (Marcelo Tosatti, Joao Martins, Wanpeng Li, Stephen Rothwell).
- Fix the menu and teo cpuidle governors to allow the scheduler tick
to be stopped if PM QoS is used to limit the CPU idle state exit
latency in some cases (Rafael Wysocki).
- Increase the resolution of the play_idle() argument to microseconds
for more fine-grained injection of CPU idle cycles (Daniel
Lezcano).
- Switch over some users of cpuidle notifiers to the new QoS-based
frequency limits and drop the CPUFREQ_ADJUST and CPUFREQ_NOTIFY
policy notifier events (Viresh Kumar).
- Add new cpufreq driver based on nvmem for sun50i (Yangtao Li).
- Add support for MT8183 and MT8516 to the mediatek cpufreq driver
(Andrew-sh.Cheng, Fabien Parent).
- Add i.MX8MN support to the imx-cpufreq-dt cpufreq driver (Anson
Huang).
- Add qcs404 to cpufreq-dt-platdev blacklist (Jorge Ramirez-Ortiz).
- Update the qcom cpufreq driver (among other things, to make it
easier to extend and to use kryo cpufreq for other nvmem-based
SoCs) and add qcs404 support to it (Niklas Cassel, Douglas
RAILLARD, Sibi Sankar, Sricharan R).
- Fix assorted issues and make assorted minor improvements in the
cpufreq code (Colin Ian King, Douglas RAILLARD, Florian Fainelli,
Gustavo Silva, Hariprasad Kelam).
- Add new devfreq driver for NVidia Tegra20 (Dmitry Osipenko, Arnd
Bergmann).
- Add new Exynos PPMU events to devfreq events and extend that
mechanism (Lukasz Luba).
- Fix and clean up the exynos-bus devfreq driver (Kamil Konieczny).
- Improve devfreq documentation and governor code, fix spelling typos
in devfreq (Ezequiel Garcia, Krzysztof Kozlowski, Leonard Crestez,
MyungJoo Ham, Gaël PORTAY).
- Add regulators enable and disable to the OPP (operating performance
points) framework (Kamil Konieczny).
- Update the OPP framework to support multiple opp-suspend properties
(Anson Huang).
- Fix assorted issues and make assorted minor improvements in the OPP
code (Niklas Cassel, Viresh Kumar, Yue Hu).
- Clean up the generic power domains (genpd) framework (Ulf Hansson).
- Clean up assorted pieces of power management code and documentation
(Akinobu Mita, Amit Kucheria, Chuhong Yuan).
- Update the pm-graph tool to version 5.5 including multiple fixes
and improvements (Todd Brandt).
- Update the cpupower utility (Benjamin Weis, Geert Uytterhoeven,
Sébastien Szymanski)"
* tag 'pm-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (126 commits)
cpuidle-haltpoll: Enable kvm guest polling when dedicated physical CPUs are available
cpuidle-haltpoll: do not set an owner to allow modunload
cpuidle-haltpoll: return -ENODEV on modinit failure
cpuidle-haltpoll: set haltpoll as preferred governor
cpuidle: allow governor switch on cpuidle_register_driver()
PM: runtime: Documentation: add runtime_status ABI document
pm-graph: make setVal unbuffered again for python2 and python3
powercap: idle_inject: Use higher resolution for idle injection
cpuidle: play_idle: Increase the resolution to usec
cpuidle-haltpoll: vcpu hotplug support
cpufreq: Add qcs404 to cpufreq-dt-platdev blacklist
cpufreq: qcom: Add support for qcs404 on nvmem driver
cpufreq: qcom: Refactor the driver to make it easier to extend
cpufreq: qcom: Re-organise kryo cpufreq to use it for other nvmem based qcom socs
dt-bindings: opp: Add qcom-opp bindings with properties needed for CPR
dt-bindings: opp: qcom-nvmem: Support pstates provided by a power domain
Documentation: cpufreq: Update policy notifier documentation
cpufreq: Remove CPUFREQ_ADJUST and CPUFREQ_NOTIFY policy notifier events
PM / Domains: Verify PM domain type in dev_pm_genpd_set_performance_state()
PM / Domains: Simplify genpd_lookup_dev()
...
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Linus Torvalds
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7e67a85999 |
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
- MAINTAINERS: Add Mark Rutland as perf submaintainer, Juri Lelli and
Vincent Guittot as scheduler submaintainers. Add Dietmar Eggemann,
Steven Rostedt, Ben Segall and Mel Gorman as scheduler reviewers.
As perf and the scheduler is getting bigger and more complex,
document the status quo of current responsibilities and interests,
and spread the review pain^H^H^H^H fun via an increase in the Cc:
linecount generated by scripts/get_maintainer.pl. :-)
- Add another series of patches that brings the -rt (PREEMPT_RT) tree
closer to mainline: split the monolithic CONFIG_PREEMPT dependencies
into a new CONFIG_PREEMPTION category that will allow the eventual
introduction of CONFIG_PREEMPT_RT. Still a few more hundred patches
to go though.
- Extend the CPU cgroup controller with uclamp.min and uclamp.max to
allow the finer shaping of CPU bandwidth usage.
- Micro-optimize energy-aware wake-ups from O(CPUS^2) to O(CPUS).
- Improve the behavior of high CPU count, high thread count
applications running under cpu.cfs_quota_us constraints.
- Improve balancing with SCHED_IDLE (SCHED_BATCH) tasks present.
- Improve CPU isolation housekeeping CPU allocation NUMA locality.
- Fix deadline scheduler bandwidth calculations and logic when cpusets
rebuilds the topology, or when it gets deadline-throttled while it's
being offlined.
- Convert the cpuset_mutex to percpu_rwsem, to allow it to be used from
setscheduler() system calls without creating global serialization.
Add new synchronization between cpuset topology-changing events and
the deadline acceptance tests in setscheduler(), which were broken
before.
- Rework the active_mm state machine to be less confusing and more
optimal.
- Rework (simplify) the pick_next_task() slowpath.
- Improve load-balancing on AMD EPYC systems.
- ... and misc cleanups, smaller fixes and improvements - please see
the Git log for more details.
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (53 commits)
sched/psi: Correct overly pessimistic size calculation
sched/fair: Speed-up energy-aware wake-ups
sched/uclamp: Always use 'enum uclamp_id' for clamp_id values
sched/uclamp: Update CPU's refcount on TG's clamp changes
sched/uclamp: Use TG's clamps to restrict TASK's clamps
sched/uclamp: Propagate system defaults to the root group
sched/uclamp: Propagate parent clamps
sched/uclamp: Extend CPU's cgroup controller
sched/topology: Improve load balancing on AMD EPYC systems
arch, ia64: Make NUMA select SMP
sched, perf: MAINTAINERS update, add submaintainers and reviewers
sched/fair: Use rq_lock/unlock in online_fair_sched_group
cpufreq: schedutil: fix equation in comment
sched: Rework pick_next_task() slow-path
sched: Allow put_prev_task() to drop rq->lock
sched/fair: Expose newidle_balance()
sched: Add task_struct pointer to sched_class::set_curr_task
sched: Rework CPU hotplug task selection
sched/{rt,deadline}: Fix set_next_task vs pick_next_task
sched: Fix kerneldoc comment for ia64_set_curr_task
...
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Daniel Lezcano
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82e430a6df |
cpuidle: play_idle: Increase the resolution to usec
The play_idle resolution is 1ms. The intel_powerclamp bases the idle duration on jiffies. The idle injection API is also using msec based duration but has no user yet. Unfortunately, msec based time does not fit well when we want to inject idle cycle precisely with shallow idle state. In order to set the scene for the incoming idle injection user, move the precision up to usec when calling play_idle. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Peter Zijlstra
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e78a7614f3 |
idle: Prevent late-arriving interrupts from disrupting offline
Scheduling-clock interrupts can arrive late in the CPU-offline process, after idle entry and the subsequent call to cpuhp_report_idle_dead(). Once execution passes the call to rcu_report_dead(), RCU is ignoring the CPU, which results in lockdep complaints when the interrupt handler uses RCU: ------------------------------------------------------------------------ ============================= WARNING: suspicious RCU usage 5.2.0-rc1+ #681 Not tainted ----------------------------- kernel/sched/fair.c:9542 suspicious rcu_dereference_check() usage! other info that might help us debug this: RCU used illegally from offline CPU! rcu_scheduler_active = 2, debug_locks = 1 no locks held by swapper/5/0. stack backtrace: CPU: 5 PID: 0 Comm: swapper/5 Not tainted 5.2.0-rc1+ #681 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS Bochs 01/01/2011 Call Trace: <IRQ> dump_stack+0x5e/0x8b trigger_load_balance+0xa8/0x390 ? tick_sched_do_timer+0x60/0x60 update_process_times+0x3b/0x50 tick_sched_handle+0x2f/0x40 tick_sched_timer+0x32/0x70 __hrtimer_run_queues+0xd3/0x3b0 hrtimer_interrupt+0x11d/0x270 ? sched_clock_local+0xc/0x74 smp_apic_timer_interrupt+0x79/0x200 apic_timer_interrupt+0xf/0x20 </IRQ> RIP: 0010:delay_tsc+0x22/0x50 Code: ff 0f 1f 80 00 00 00 00 65 44 8b 05 18 a7 11 48 0f ae e8 0f 31 48 89 d6 48 c1 e6 20 48 09 c6 eb 0e f3 90 65 8b 05 fe a6 11 48 <41> 39 c0 75 18 0f ae e8 0f 31 48 c1 e2 20 48 09 c2 48 89 d0 48 29 RSP: 0000:ffff8f92c0157ed0 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000005 RBX: ffff8c861f356400 RCX: ffff8f92c0157e64 RDX: 000000321214c8cc RSI: 00000032120daa7f RDI: 0000000000260f15 RBP: 0000000000000005 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8c861ee18000 R15: ffff8c861ee18000 cpuhp_report_idle_dead+0x31/0x60 do_idle+0x1d5/0x200 ? _raw_spin_unlock_irqrestore+0x2d/0x40 cpu_startup_entry+0x14/0x20 start_secondary+0x151/0x170 secondary_startup_64+0xa4/0xb0 ------------------------------------------------------------------------ This happens rarely, but can be forced by happen more often by placing delays in cpuhp_report_idle_dead() following the call to rcu_report_dead(). With this in place, the following rcutorture scenario reproduces the problem within a few minutes: tools/testing/selftests/rcutorture/bin/kvm.sh --cpus 8 --duration 5 --kconfig "CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y" --configs "TREE04" This commit uses the crude but effective expedient of moving the disabling of interrupts within the idle loop to precede the cpu_is_offline() check. It also invokes tick_nohz_idle_stop_tick() instead of tick_nohz_idle_stop_tick_protected() to shut off the scheduling-clock interrupt. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> [ paulmck: Revert tick_nohz_idle_stop_tick_protected() removal, new callers. ] Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com> |
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Peter Zijlstra
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67692435c4 |
sched: Rework pick_next_task() slow-path
Avoid the RETRY_TASK case in the pick_next_task() slow path. By doing the put_prev_task() early, we get the rt/deadline pull done, and by testing rq->nr_running we know if we need newidle_balance(). This then gives a stable state to pick a task from. Since the fast-path is fair only; it means the other classes will always have pick_next_task(.prev=NULL, .rf=NULL) and we can simplify. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Aaron Lu <aaron.lwe@gmail.com> Cc: Valentin Schneider <valentin.schneider@arm.com> Cc: mingo@kernel.org Cc: Phil Auld <pauld@redhat.com> Cc: Julien Desfossez <jdesfossez@digitalocean.com> Cc: Nishanth Aravamudan <naravamudan@digitalocean.com> Link: https://lkml.kernel.org/r/aa34d24b36547139248f32a30138791ac6c02bd6.1559129225.git.vpillai@digitalocean.com |
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Peter Zijlstra
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5f2a45fc9e |
sched: Allow put_prev_task() to drop rq->lock
Currently the pick_next_task() loop is convoluted and ugly because of how it can drop the rq->lock and needs to restart the picking. For the RT/Deadline classes, it is put_prev_task() where we do balancing, and we could do this before the picking loop. Make this possible. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Valentin Schneider <valentin.schneider@arm.com> Cc: Aaron Lu <aaron.lwe@gmail.com> Cc: mingo@kernel.org Cc: Phil Auld <pauld@redhat.com> Cc: Julien Desfossez <jdesfossez@digitalocean.com> Cc: Nishanth Aravamudan <naravamudan@digitalocean.com> Link: https://lkml.kernel.org/r/e4519f6850477ab7f3d257062796e6425ee4ba7c.1559129225.git.vpillai@digitalocean.com |
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Peter Zijlstra
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03b7fad167 |
sched: Add task_struct pointer to sched_class::set_curr_task
In preparation of further separating pick_next_task() and set_curr_task() we have to pass the actual task into it, while there, rename the thing to better pair with put_prev_task(). Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Aaron Lu <aaron.lwe@gmail.com> Cc: Valentin Schneider <valentin.schneider@arm.com> Cc: mingo@kernel.org Cc: Phil Auld <pauld@redhat.com> Cc: Julien Desfossez <jdesfossez@digitalocean.com> Cc: Nishanth Aravamudan <naravamudan@digitalocean.com> Link: https://lkml.kernel.org/r/a96d1bcdd716db4a4c5da2fece647a1456c0ed78.1559129225.git.vpillai@digitalocean.com |
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Thomas Gleixner
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457c899653 |
treewide: Add SPDX license identifier for missed files
Add SPDX license identifiers to all files which: - Have no license information of any form - Have EXPORT_.*_SYMBOL_GPL inside which was used in the initial scan/conversion to ignore the file These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Christophe Leroy
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977e4be5eb |
x86/stackprotector: Remove the call to boot_init_stack_canary() from cpu_startup_entry()
The following commit:
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Rafael J. Wysocki
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7059b36636 |
sched: idle: Avoid retaining the tick when it has been stopped
If the tick has been stopped already, but the governor has not asked to
stop it (which it can do sometimes), the idle loop should invoke
tick_nohz_idle_stop_tick(), to let tick_nohz_stop_tick() take care
of this case properly.
Fixes:
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Rafael J. Wysocki
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554c8aa8ec |
sched: idle: Select idle state before stopping the tick
In order to address the issue with short idle duration predictions by the idle governor after the scheduler tick has been stopped, reorder the code in cpuidle_idle_call() so that the governor idle state selection runs before tick_nohz_idle_go_idle() and use the "nohz" hint returned by cpuidle_select() to decide whether or not to stop the tick. This isn't straightforward, because menu_select() invokes tick_nohz_get_sleep_length() to get the time to the next timer event and the number returned by the latter comes from __tick_nohz_idle_stop_tick(). Fortunately, however, it is possible to compute that number without actually stopping the tick and with the help of the existing code. Namely, tick_nohz_get_sleep_length() can be made call tick_nohz_next_event(), introduced earlier, to get the time to the next non-highres timer event. If that happens, tick_nohz_next_event() need not be called by __tick_nohz_idle_stop_tick() again. If it turns out that the scheduler tick cannot be stopped going forward or the next timer event is too close for the tick to be stopped, tick_nohz_get_sleep_length() can simply return the time to the next event currently programmed into the corresponding clock event device. In addition to knowing the return value of tick_nohz_next_event(), however, tick_nohz_get_sleep_length() needs to know the time to the next highres timer event, but with the scheduler tick timer excluded, which can be computed with the help of hrtimer_get_next_event(). That minimum of that number and the tick_nohz_next_event() return value is the total time to the next timer event with the assumption that the tick will be stopped. It can be returned to the idle governor which can use it for predicting idle duration (under the assumption that the tick will be stopped) and deciding whether or not it makes sense to stop the tick before putting the CPU into the selected idle state. With the above, the sleep_length field in struct tick_sched is not necessary any more, so drop it. Link: https://bugzilla.kernel.org/show_bug.cgi?id=199227 Reported-by: Doug Smythies <dsmythies@telus.net> Reported-by: Thomas Ilsche <thomas.ilsche@tu-dresden.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> |
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Rafael J. Wysocki
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45f1ff59e2 |
cpuidle: Return nohz hint from cpuidle_select()
Add a new pointer argument to cpuidle_select() and to the ->select
cpuidle governor callback to allow a boolean value indicating
whether or not the tick should be stopped before entering the
selected state to be returned from there.
Make the ladder governor ignore that pointer (to preserve its
current behavior) and make the menu governor return 'false" through
it if:
(1) the idle exit latency is constrained at 0, or
(2) the selected state is a polling one, or
(3) the expected idle period duration is within the tick period
range.
In addition to that, the correction factor computations in the menu
governor need to take the possibility that the tick may not be
stopped into account to avoid artificially small correction factor
values. To that end, add a mechanism to record tick wakeups, as
suggested by Peter Zijlstra, and use it to modify the menu_update()
behavior when tick wakeup occurs. Namely, if the CPU is woken up by
the tick and the return value of tick_nohz_get_sleep_length() is not
within the tick boundary, the predicted idle duration is likely too
short, so make menu_update() try to compensate for that by updating
the governor statistics as though the CPU was idle for a long time.
Since the value returned through the new argument pointer of
cpuidle_select() is not used by its caller yet, this change by
itself is not expected to alter the functionality of the code.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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Rafael J. Wysocki
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ed98c34919 |
sched: idle: Do not stop the tick before cpuidle_idle_call()
Make cpuidle_idle_call() decide whether or not to stop the tick. First, the cpuidle_enter_s2idle() path deals with the tick (and with the entire timekeeping for that matter) by itself and it doesn't need the tick to be stopped beforehand. Second, to address the issue with short idle duration predictions by the idle governor after the tick has been stopped, it will be necessary to change the ordering of cpuidle_select() with respect to tick_nohz_idle_stop_tick(). To prepare for that, put a tick_nohz_idle_stop_tick() call in the same branch in which cpuidle_select() is called. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> |
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Rafael J. Wysocki
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2aaf709a51 |
sched: idle: Do not stop the tick upfront in the idle loop
Push the decision whether or not to stop the tick somewhat deeper into the idle loop. Stopping the tick upfront leads to unpleasant outcomes in case the idle governor doesn't agree with the nohz code on the duration of the upcoming idle period. Specifically, if the tick has been stopped and the idle governor predicts short idle, the situation is bad regardless of whether or not the prediction is accurate. If it is accurate, the tick has been stopped unnecessarily which means excessive overhead. If it is not accurate, the CPU is likely to spend too much time in the (shallow, because short idle has been predicted) idle state selected by the governor [1]. As the first step towards addressing this problem, change the code to make the tick stopping decision inside of the loop in do_idle(). In particular, do not stop the tick in the cpu_idle_poll() code path. Also don't do that in tick_nohz_irq_exit() which doesn't really have enough information on whether or not to stop the tick. Link: https://marc.info/?l=linux-pm&m=150116085925208&w=2 # [1] Link: https://tu-dresden.de/zih/forschung/ressourcen/dateien/projekte/haec/powernightmares.pdf Suggested-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> |
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Rafael J. Wysocki
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0e7767687f |
time: tick-sched: Reorganize idle tick management code
Prepare the scheduler tick code for reworking the idle loop to avoid stopping the tick in some cases. The idea is to split the nohz idle entry call to decouple the idle time stats accounting and preparatory work from the actual tick stop code, in order to later be able to delay the tick stop once we reach more power-knowledgeable callers. Move away the tick_nohz_start_idle() invocation from __tick_nohz_idle_enter(), rename the latter to __tick_nohz_idle_stop_tick() and define tick_nohz_idle_stop_tick() as a wrapper around it for calling it from the outside. Make tick_nohz_idle_enter() only call tick_nohz_start_idle() instead of calling the entire __tick_nohz_idle_enter(), add another wrapper disabling and enabling interrupts around tick_nohz_idle_stop_tick() and make the current callers of tick_nohz_idle_enter() call it too to retain their current functionality. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> |
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Ingo Molnar
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a92057e14b |
sched/idle: Merge kernel/sched/idle.c and kernel/sched/idle_task.c
Merge these two small .c modules as they implement two aspects of idle task handling. Cc: 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> |
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Ingo Molnar
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325ea10c08 |
sched/headers: Simplify and clean up header usage in the scheduler
Do the following cleanups and simplifications: - sched/sched.h already includes <asm/paravirt.h>, so no need to include it in sched/core.c again. - order the <linux/sched/*.h> headers alphabetically - add all <linux/sched/*.h> headers to kernel/sched/sched.h - remove all unnecessary includes from the .c files that are already included in kernel/sched/sched.h. Finally, make all scheduler .c files use a single common header: #include "sched.h" ... which now contains a union of the relied upon headers. This makes the various .c files easier to read and easier to handle. Cc: 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> |
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Ingo Molnar
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97fb7a0a89 |
sched: Clean up and harmonize the coding style of the scheduler code base
A good number of small style inconsistencies have accumulated
in the scheduler core, so do a pass over them to harmonize
all these details:
- fix speling in comments,
- use curly braces for multi-line statements,
- remove unnecessary parentheses from integer literals,
- capitalize consistently,
- remove stray newlines,
- add comments where necessary,
- remove invalid/unnecessary comments,
- align structure definitions and other data types vertically,
- add missing newlines for increased readability,
- fix vertical tabulation where it's misaligned,
- harmonize preprocessor conditional block labeling
and vertical alignment,
- remove line-breaks where they uglify the code,
- add newline after local variable definitions,
No change in functionality:
md5:
1191fa0a890cfa8132156d2959d7e9e2 built-in.o.before.asm
1191fa0a890cfa8132156d2959d7e9e2 built-in.o.after.asm
Cc: 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>
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Cheng Jian
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54b933c6c9 |
sched/idle: Micro-optimize the idle loop
Move the loop-invariant calculation of 'cpu' in do_idle() out of the loop body, because the current CPU is always constant. This improves the generated code both on x86-64 and ARM64: x86-64: Before patch (execution in loop): 864: 0f ae e8 lfence 867: 65 8b 05 c2 38 f1 7e mov %gs:0x7ef138c2(%rip),%eax 86e: 89 c0 mov %eax,%eax 870: 48 0f a3 05 68 19 08 bt %rax,0x1081968(%rip) 877: 01 After patch (execution in loop): 872: 0f ae e8 lfence 875: 4c 0f a3 25 63 19 08 bt %r12,0x1081963(%rip) 87c: 01 ARM64: Before patch (execution in loop): c58: d5033d9f dsb ld c5c: d538d080 mrs x0, tpidr_el1 c60: b8606a61 ldr w1, [x19,x0] c64: 1100fc20 add w0, w1, #0x3f c68: 7100003f cmp w1, #0x0 c6c: 1a81b000 csel w0, w0, w1, lt c70: 13067c00 asr w0, w0, #6 c74: 93407c00 sxtw x0, w0 c78: f8607a80 ldr x0, [x20,x0,lsl #3] c7c: 9ac12401 lsr x1, x0, x1 c80: 36000581 tbz w1, #0, d30 <do_idle+0x128> After patch (execution in loop): c84: d5033d9f dsb ld c88: f9400260 ldr x0, [x19] c8c: ea14001f tst x0, x20 c90: 54000580 b.eq d40 <do_idle+0x138> Signed-off-by: Cheng Jian <cj.chengjian@huawei.com> [ Rewrote the title and the changelog. ] Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: huawei.libin@huawei.com Cc: xiexiuqi@huawei.com Link: http://lkml.kernel.org/r/1508930907-107755-1-git-send-email-cj.chengjian@huawei.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Peter Zijlstra
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62cb1188ed |
sched/idle: Move quiet_vmstate() into the NOHZ code
quiet_vmstat() is an expensive function that only makes sense when we go into NOHZ. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: 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: aubrey.li@linux.intel.com Cc: cl@linux.com Cc: fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Rafael J. Wysocki
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28ba086ed3 |
PM / s2idle: Rename ->enter_freeze to ->enter_s2idle
Rename the ->enter_freeze cpuidle driver callback to ->enter_s2idle to make it clear that it is used for entering suspend-to-idle and rename the related functions, variables and so on accordingly. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Rafael J. Wysocki
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f02f4f9d82 |
PM / s2idle: Rename freeze_state enum and related items
Rename the freeze_state enum representing the suspend-to-idle state machine states to s2idle_states and rename the related variables and functions accordingly. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |