70f98fe87ab5b332fa6308ae9f05da170d65e9f6
90 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Sebastian Andrzej Siewior
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34ffd92c36 | kernel/sched/core: add migrate_disable() | ||
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kondors1995
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b20e114357 | Merge branch 'android-4.14-stable' of https://android.googlesource.com/kernel/common into 12.1 | ||
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Greg Kroah-Hartman
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b296bf0cb0 |
Merge 4.14.276 into android-4.14-stable
Changes in 4.14.276 USB: serial: pl2303: add IBM device IDs USB: serial: simple: add Nokia phone driver netdevice: add the case if dev is NULL virtio_console: break out of buf poll on remove ethernet: sun: Free the coherent when failing in probing spi: Fix invalid sgs value spi: Fix erroneous sgs value with min_t() af_key: add __GFP_ZERO flag for compose_sadb_supported in function pfkey_register fuse: fix pipe buffer lifetime for direct_io tpm: fix reference counting for struct tpm_chip block: Add a helper to validate the block size virtio-blk: Use blk_validate_block_size() to validate block size USB: usb-storage: Fix use of bitfields for hardware data in ene_ub6250.c coresight: Fix TRCCONFIGR.QE sysfs interface iio: inkern: apply consumer scale on IIO_VAL_INT cases iio: inkern: apply consumer scale when no channel scale is available iio: inkern: make a best effort on offset calculation clk: uniphier: Fix fixed-rate initialization ptrace: Check PTRACE_O_SUSPEND_SECCOMP permission on PTRACE_SEIZE Documentation: add link to stable release candidate tree Documentation: update stable tree link SUNRPC: avoid race between mod_timer() and del_timer_sync() NFSD: prevent underflow in nfssvc_decode_writeargs() pinctrl: samsung: drop pin banks references on error paths can: ems_usb: ems_usb_start_xmit(): fix double dev_kfree_skb() in error path jffs2: fix use-after-free in jffs2_clear_xattr_subsystem jffs2: fix memory leak in jffs2_do_mount_fs jffs2: fix memory leak in jffs2_scan_medium mm/pages_alloc.c: don't create ZONE_MOVABLE beyond the end of a node mempolicy: mbind_range() set_policy() after vma_merge() scsi: libsas: Fix sas_ata_qc_issue() handling of NCQ NON DATA commands qed: display VF trust config qed: validate and restrict untrusted VFs vlan promisc mode Revert "Input: clear BTN_RIGHT/MIDDLE on buttonpads" ALSA: cs4236: fix an incorrect NULL check on list iterator drbd: fix potential silent data corruption ACPI: properties: Consistently return -ENOENT if there are no more references drivers: hamradio: 6pack: fix UAF bug caused by mod_timer() video: fbdev: sm712fb: Fix crash in smtcfb_read() video: fbdev: atari: Atari 2 bpp (STe) palette bugfix ARM: dts: at91: sama5d2: Fix PMERRLOC resource size ARM: dts: exynos: fix UART3 pins configuration in Exynos5250 ARM: dts: exynos: add missing HDMI supplies on SMDK5250 ARM: dts: exynos: add missing HDMI supplies on SMDK5420 carl9170: fix missing bit-wise or operator for tx_params thermal: int340x: Increase bitmap size lib/raid6/test: fix multiple definition linking error DEC: Limit PMAX memory probing to R3k systems media: davinci: vpif: fix unbalanced runtime PM get brcmfmac: firmware: Allocate space for default boardrev in nvram brcmfmac: pcie: Replace brcmf_pcie_copy_mem_todev with memcpy_toio PCI: pciehp: Clear cmd_busy bit in polling mode crypto: authenc - Fix sleep in atomic context in decrypt_tail crypto: mxs-dcp - Fix scatterlist processing spi: tegra114: Add missing IRQ check in tegra_spi_probe selftests/x86: Add validity check and allow field splitting spi: pxa2xx-pci: Balance reference count for PCI DMA device hwmon: (pmbus) Add mutex to regulator ops hwmon: (sch56xx-common) Replace WDOG_ACTIVE with WDOG_HW_RUNNING PM: hibernate: fix __setup handler error handling PM: suspend: fix return value of __setup handler hwrng: atmel - disable trng on failure path crypto: vmx - add missing dependencies ACPI: APEI: fix return value of __setup handlers crypto: ccp - ccp_dmaengine_unregister release dma channels hwmon: (pmbus) Add Vin unit off handling clocksource: acpi_pm: fix return value of __setup handler sched/debug: Remove mpol_get/put and task_lock/unlock from sched_show_numa perf/core: Fix address filter parser for multiple filters perf/x86/intel/pt: Fix address filter config for 32-bit kernel media: coda: Fix missing put_device() call in coda_get_vdoa_data video: fbdev: smscufx: Fix null-ptr-deref in ufx_usb_probe() video: fbdev: fbcvt.c: fix printing in fb_cvt_print_name() ARM: dts: qcom: ipq4019: fix sleep clock soc: ti: wkup_m3_ipc: Fix IRQ check in wkup_m3_ipc_probe media: usb: go7007: s2250-board: fix leak in probe() ASoC: ti: davinci-i2s: Add check for clk_enable() ALSA: spi: Add check for clk_enable() arm64: dts: ns2: Fix spi-cpol and spi-cpha property arm64: dts: broadcom: Fix sata nodename printk: fix return value of printk.devkmsg __setup handler ASoC: mxs-saif: Handle errors for clk_enable ASoC: atmel_ssc_dai: Handle errors for clk_enable memory: emif: Add check for setup_interrupts memory: emif: check the pointer temp in get_device_details() ALSA: firewire-lib: fix uninitialized flag for AV/C deferred transaction media: stk1160: If start stream fails, return buffers with VB2_BUF_STATE_QUEUED ASoC: atmel: Add missing of_node_put() in at91sam9g20ek_audio_probe ASoC: wm8350: Handle error for wm8350_register_irq ASoC: fsi: Add check for clk_enable video: fbdev: omapfb: Add missing of_node_put() in dvic_probe_of ASoC: dmaengine: do not use a NULL prepare_slave_config() callback ASoC: mxs: Fix error handling in mxs_sgtl5000_probe ASoC: imx-es8328: Fix error return code in imx_es8328_probe() ASoC: msm8916-wcd-digital: Fix missing clk_disable_unprepare() in msm8916_wcd_digital_probe mtd: onenand: Check for error irq drm/edid: Don't clear formats if using deep color ath9k_htc: fix uninit value bugs power: reset: gemini-poweroff: Fix IRQ check in gemini_poweroff_probe ray_cs: Check ioremap return value power: supply: ab8500: Fix memory leak in ab8500_fg_sysfs_init HID: i2c-hid: fix GET/SET_REPORT for unnumbered reports iwlwifi: Fix -EIO error code that is never returned dm crypt: fix get_key_size compiler warning if !CONFIG_KEYS scsi: pm8001: Fix command initialization in pm80XX_send_read_log() scsi: pm8001: Fix command initialization in pm8001_chip_ssp_tm_req() scsi: pm8001: Fix payload initialization in pm80xx_set_thermal_config() scsi: pm8001: Fix abort all task initialization TOMOYO: fix __setup handlers return values ext2: correct max file size computing drm/tegra: Fix reference leak in tegra_dsi_ganged_probe power: supply: bq24190_charger: Fix bq24190_vbus_is_enabled() wrong false return KVM: x86: Fix emulation in writing cr8 KVM: x86/emulator: Defer not-present segment check in __load_segment_descriptor() i2c: xiic: Make bus names unique power: supply: wm8350-power: Handle error for wm8350_register_irq power: supply: wm8350-power: Add missing free in free_charger_irq PCI: Reduce warnings on possible RW1C corruption powerpc/sysdev: fix incorrect use to determine if list is empty mfd: mc13xxx: Add check for mc13xxx_irq_request vxcan: enable local echo for sent CAN frames MIPS: RB532: fix return value of __setup handler mtd: rawnand: atmel: fix refcount issue in atmel_nand_controller_init USB: storage: ums-realtek: fix error code in rts51x_read_mem() af_netlink: Fix shift out of bounds in group mask calculation i2c: mux: demux-pinctrl: do not deactivate a master that is not active tcp: ensure PMTU updates are processed during fastopen mfd: asic3: Add missing iounmap() on error asic3_mfd_probe mxser: fix xmit_buf leak in activate when LSR == 0xff pwm: lpc18xx-sct: Initialize driver data and hardware before pwmchip_add() staging:iio:adc:ad7280a: Fix handing of device address bit reversing. serial: 8250_mid: Balance reference count for PCI DMA device serial: 8250: Fix race condition in RTS-after-send handling iio: adc: Add check for devm_request_threaded_irq clk: qcom: clk-rcg2: Update the frac table for pixel clock remoteproc: qcom_wcnss: Add missing of_node_put() in wcnss_alloc_memory_region clk: loongson1: Terminate clk_div_table with sentinel element clk: clps711x: Terminate clk_div_table with sentinel element clk: tegra: tegra124-emc: Fix missing put_device() call in emc_ensure_emc_driver NFS: remove unneeded check in decode_devicenotify_args() pinctrl: mediatek: Fix missing of_node_put() in mtk_pctrl_init pinctrl: nomadik: Add missing of_node_put() in nmk_pinctrl_probe pinctrl/rockchip: Add missing of_node_put() in rockchip_pinctrl_probe tty: hvc: fix return value of __setup handler kgdboc: fix return value of __setup handler kgdbts: fix return value of __setup handler jfs: fix divide error in dbNextAG netfilter: nf_conntrack_tcp: preserve liberal flag in tcp options xen: fix is_xen_pmu() net: phy: broadcom: Fix brcm_fet_config_init() qlcnic: dcb: default to returning -EOPNOTSUPP net/x25: Fix null-ptr-deref caused by x25_disconnect NFSv4/pNFS: Fix another issue with a list iterator pointing to the head lib/test: use after free in register_test_dev_kmod() selinux: use correct type for context length loop: use sysfs_emit() in the sysfs xxx show() Fix incorrect type in assignment of ipv6 port for audit irqchip/nvic: Release nvic_base upon failure ACPICA: Avoid walking the ACPI Namespace if it is not there ACPI/APEI: Limit printable size of BERT table data PM: core: keep irq flags in device_pm_check_callbacks() spi: tegra20: Use of_device_get_match_data() ext4: don't BUG if someone dirty pages without asking ext4 first ntfs: add sanity check on allocation size video: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow video: fbdev: w100fb: Reset global state video: fbdev: cirrusfb: check pixclock to avoid divide by zero video: fbdev: omapfb: acx565akm: replace snprintf with sysfs_emit ARM: dts: qcom: fix gic_irq_domain_translate warnings for msm8960 ARM: dts: bcm2837: Add the missing L1/L2 cache information video: fbdev: omapfb: panel-dsi-cm: Use sysfs_emit() instead of snprintf() video: fbdev: omapfb: panel-tpo-td043mtea1: Use sysfs_emit() instead of snprintf() ASoC: soc-core: skip zero num_dai component in searching dai name media: cx88-mpeg: clear interrupt status register before streaming video ARM: tegra: tamonten: Fix I2C3 pad setting ARM: mmp: Fix failure to remove sram device video: fbdev: sm712fb: Fix crash in smtcfb_write() media: hdpvr: initialize dev->worker at hdpvr_register_videodev mmc: host: Return an error when ->enable_sdio_irq() ops is missing powerpc/lib/sstep: Fix 'sthcx' instruction powerpc/lib/sstep: Fix build errors with newer binutils scsi: qla2xxx: Fix warning for missing error code scsi: qla2xxx: Suppress a kernel complaint in qla_create_qpair() KVM: Prevent module exit until all VMs are freed ubifs: rename_whiteout: Fix double free for whiteout_ui->data ubifs: Add missing iput if do_tmpfile() failed in rename whiteout ubifs: setflags: Make dirtied_ino_d 8 bytes aligned ubifs: rename_whiteout: correct old_dir size computing can: mcba_usb: mcba_usb_start_xmit(): fix double dev_kfree_skb in error path can: mcba_usb: properly check endpoint type gfs2: Make sure FITRIM minlen is rounded up to fs block size pinctrl: pinconf-generic: Print arguments for bias-pull-* ubi: Fix race condition between ctrl_cdev_ioctl and ubi_cdev_ioctl ACPI: CPPC: Avoid out of bounds access when parsing _CPC data mm/mmap: return 1 from stack_guard_gap __setup() handler mm/memcontrol: return 1 from cgroup.memory __setup() handler ubi: fastmap: Return error code if memory allocation fails in add_aeb() ASoC: topology: Allow TLV control to be either read or write ARM: dts: spear1340: Update serial node properties ARM: dts: spear13xx: Update SPI dma properties openvswitch: Fixed nd target mask field in the flow dump. KVM: x86: Forbid VMM to set SYNIC/STIMER MSRs when SynIC wasn't activated ubifs: Rectify space amount budget for mkdir/tmpfile operations rtc: wm8350: Handle error for wm8350_register_irq ARM: 9187/1: JIVE: fix return value of __setup handler KVM: x86/svm: Clear reserved bits written to PerfEvtSeln MSRs ath5k: fix OOB in ath5k_eeprom_read_pcal_info_5111 ptp: replace snprintf with sysfs_emit powerpc: dts: t104xrdb: fix phy type for FMAN 4/5 scsi: mvsas: Replace snprintf() with sysfs_emit() scsi: bfa: Replace snprintf() with sysfs_emit() power: supply: axp20x_battery: properly report current when discharging powerpc: Set crashkernel offset to mid of RMA region PCI: aardvark: Fix support for MSI interrupts iommu/arm-smmu-v3: fix event handling soft lockup dm ioctl: prevent potential spectre v1 gadget scsi: pm8001: Fix pm8001_mpi_task_abort_resp() scsi: aha152x: Fix aha152x_setup() __setup handler return value net/smc: correct settings of RMB window update limit macvtap: advertise link netns via netlink bnxt_en: Eliminate unintended link toggle during FW reset MIPS: fix fortify panic when copying asm exception handlers scsi: libfc: Fix use after free in fc_exch_abts_resp() usb: dwc3: omap: fix "unbalanced disables for smps10_out1" on omap5evm xtensa: fix DTC warning unit_address_format Bluetooth: Fix use after free in hci_send_acl init/main.c: return 1 from handled __setup() functions w1: w1_therm: fixes w1_seq for ds28ea00 sensors SUNRPC/call_alloc: async tasks mustn't block waiting for memory NFS: swap IO handling is slightly different for O_DIRECT IO NFS: swap-out must always use STABLE writes. serial: samsung_tty: do not unlock port->lock for uart_write_wakeup() virtio_console: eliminate anonymous module_init & module_exit jfs: prevent NULL deref in diFree parisc: Fix CPU affinity for Lasi, WAX and Dino chips ipv6: add missing tx timestamping on IPPROTO_RAW net: add missing SOF_TIMESTAMPING_OPT_ID support mm: fix race between MADV_FREE reclaim and blkdev direct IO read drm/amdgpu: fix off by one in amdgpu_gfx_kiq_acquire() scsi: zorro7xx: Fix a resource leak in zorro7xx_remove_one() net: stmmac: Fix unset max_speed difference between DT and non-DT platforms drm/imx: Fix memory leak in imx_pd_connector_get_modes drbd: Fix five use after free bugs in get_initial_state Revert "mmc: sdhci-xenon: fix annoying 1.8V regulator warning" mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0) mm/mempolicy: fix mpol_new leak in shared_policy_replace x86/pm: Save the MSR validity status at context setup x86/speculation: Restore speculation related MSRs during S3 resume btrfs: fix qgroup reserve overflow the qgroup limit arm64: patch_text: Fixup last cpu should be master perf: qcom_l2_pmu: fix an incorrect NULL check on list iterator tools build: Use $(shell ) instead of `` to get embedded libperl's ccopts dmaengine: Revert "dmaengine: shdma: Fix runtime PM imbalance on error" mm: don't skip swap entry even if zap_details specified arm64: module: remove (NOLOAD) from linker script mm/sparsemem: fix 'mem_section' will never be NULL gcc 12 warning cgroup: Use open-time credentials for process migraton perm checks cgroup: Allocate cgroup_file_ctx for kernfs_open_file->priv cgroup: Use open-time cgroup namespace for process migration perm checks xfrm: policy: match with both mark and mask on user interfaces memory: atmel-ebi: Fix missing of_node_put in atmel_ebi_probe veth: Ensure eth header is in skb's linear part gpiolib: acpi: use correct format characters mlxsw: i2c: Fix initialization error flow net: ethernet: stmmac: fix altr_tse_pcs function when using a fixed-link nfc: nci: add flush_workqueue to prevent uaf cifs: potential buffer overflow in handling symlinks drm/amd: Add USBC connector ID drm/amdkfd: Check for potential null return of kmalloc_array() Drivers: hv: vmbus: Prevent load re-ordering when reading ring buffer scsi: target: tcmu: Fix possible page UAF scsi: ibmvscsis: Increase INITIAL_SRP_LIMIT to 1024 net: micrel: fix KS8851_MLL Kconfig ata: libata-core: Disable READ LOG DMA EXT for Samsung 840 EVOs gpu: ipu-v3: Fix dev_dbg frequency output scsi: mvsas: Add PCI ID of RocketRaid 2640 drivers: net: slip: fix NPD bug in sl_tx_timeout() mm, page_alloc: fix build_zonerefs_node() mm: kmemleak: take a full lowmem check in kmemleak_*_phys() gcc-plugins: latent_entropy: use /dev/urandom ALSA: pcm: Test for "silence" field in struct "pcm_format_data" ARM: davinci: da850-evm: Avoid NULL pointer dereference smp: Fix offline cpu check in flush_smp_call_function_queue() i2c: pasemi: Wait for write xfers to finish Linux 4.14.276 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I45d8292ce654c0236758030a89b4618cf3a3d87b |
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Bharata B Rao
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55dc09d495 |
sched/debug: Remove mpol_get/put and task_lock/unlock from sched_show_numa
[ Upstream commit 28c988c3ec29db74a1dda631b18785958d57df4f ]
The older format of /proc/pid/sched printed home node info which
required the mempolicy and task lock around mpol_get(). However
the format has changed since then and there is no need for
sched_show_numa() any more to have mempolicy argument,
asssociated mpol_get/put and task_lock/unlock. Remove them.
Fixes:
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Sultan Alsawaf
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a851bbf2ac |
sched: Resolve sched_feat() at compile time to improve code optimization
Keeping the compiler in the dark about which sched_feat() toggles are set reduces its ability to optimize scheduler code, which results in a measurably significant performance loss since the affected code is very hot. Turning sched_feat() definitions into macros that the compiler can resolve results in smaller and faster code. The sched_feat() definitions are converted to macros with this sed: sed -i -E \ -e 's/SCHED_FEAT\((.*),(.*)\)/#define SCHED_FEAT_\1\2/' \ -e 's/true/1/' \ -e 's/false/0/' \ kernel/sched/features.h The sched_feat() macros are named SCHED_FEAT_*. With this done, we can now optimize try-to-wake-up code when SCHED_FEAT_TTWU_QUEUE is disabled, which results in a CPU usage reduction of a few percent inside try_to_wake_up(). Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com> |
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kondors1995
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732ff49539 |
Revert 4.19 walt backports
Squashed commit of the following: commit e0da409d20a1120c48f7c7c59a86df2d0e78dff1 Author: kondors1995 <normandija1945@gmail.com> Date: Tue Apr 12 07:15:28 2022 +0000 Revert "Revert "sched/core: Fix migration to invalid CPU in __set_cpus_allowed_ptr()"" This reverts commit |
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Pavankumar Kondeti
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ca3cf0c1f8 |
sched/walt: Improve the scheduler
This change is for general scheduler improvement. Change-Id: I2735e374c0c78b89d0f722aa6346deb7022ed9b3 Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org> |
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Pavankumar Kondeti
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f00a64321e |
sched/walt: Improve the scheduler
This change is for general scheduler improvement. Change-Id: I3af4fccd6db844729863f0422a910e2906c8ff9a Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org> |
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Blagovest Kolenichev
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5d880f1ba0 |
Merge android-4.14.111 (171fc23) into msm-4.14
* refs/heads/tmp-171fc23: Revert "usb: dwc3: gadget: Fix OTG events when gadget driver isn't loaded" Revert "coresight: etm4x: Add support to enable ETMv4.2" Linux 4.14.111 ACPI / video: Extend chassis-type detection with a "Lunch Box" check drm/dp/mst: Configure no_stop_bit correctly for remote i2c xfers dmaengine: tegra: avoid overflow of byte tracking clk: rockchip: fix frac settings of GPLL clock for rk3328 x86/build: Mark per-CPU symbols as absolute explicitly for LLD wlcore: Fix memory leak in case wl12xx_fetch_firmware failure selinux: do not override context on context mounts x86/build: Specify elf_i386 linker emulation explicitly for i386 objects drm/nouveau: Stop using drm_crtc_force_disable drm: Auto-set allow_fb_modifiers when given modifiers at plane init regulator: act8865: Fix act8600_sudcdc_voltage_ranges setting media: s5p-jpeg: Check for fmt_ver_flag when doing fmt enumeration netfilter: physdev: relax br_netfilter dependency dmaengine: qcom_hidma: initialize tx flags in hidma_prep_dma_* dmaengine: qcom_hidma: assign channel cookie correctly dmaengine: imx-dma: fix warning comparison of distinct pointer types cpu/hotplug: Mute hotplug lockdep during init hpet: Fix missing '=' character in the __setup() code of hpet_mmap_enable HID: intel-ish: ipc: handle PIMR before ish_wakeup also clear PISR busy_clear bit soc/tegra: fuse: Fix illegal free of IO base address hwrng: virtio - Avoid repeated init of completion media: mt9m111: set initial frame size other than 0x0 usb: dwc3: gadget: Fix OTG events when gadget driver isn't loaded powerpc/pseries: Perform full re-add of CPU for topology update post-migration tty: increase the default flip buffer limit to 2*640K backlight: pwm_bl: Use gpiod_get_value_cansleep() to get initial state cgroup/pids: turn cgroup_subsys->free() into cgroup_subsys->release() to fix the accounting bpf: fix missing prototype warnings ARM: avoid Cortex-A9 livelock on tight dmb loops ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care of mt7601u: bump supported EEPROM version soc: qcom: gsbi: Fix error handling in gsbi_probe() efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted ARM: dts: lpc32xx: Remove leading 0x and 0s from bindings notation efi/memattr: Don't bail on zero VA if it equals the region's PA sched/debug: Initialize sd_sysctl_cpus if !CONFIG_CPUMASK_OFFSTACK ASoC: fsl-asoc-card: fix object reference leaks in fsl_asoc_card_probe platform/x86: intel_pmc_core: Fix PCH IP sts reading e1000e: fix cyclic resets at link up with active tx cdrom: Fix race condition in cdrom_sysctl_register fbdev: fbmem: fix memory access if logo is bigger than the screen iw_cxgb4: fix srqidx leak during connection abort genirq: Avoid summation loops for /proc/stat bcache: improve sysfs_strtoul_clamp() bcache: fix input overflow to sequential_cutoff bcache: fix input overflow to cache set sysfs file io_error_halflife sched/topology: Fix percpu data types in struct sd_data & struct s_data usb: f_fs: Avoid crash due to out-of-scope stack ptr access ALSA: PCM: check if ops are defined before suspending PCM ARM: 8833/1: Ensure that NEON code always compiles with Clang netfilter: conntrack: fix cloned unconfirmed skb->_nfct race in __nf_conntrack_confirm kprobes: Prohibit probing on bsearch() ACPI / video: Refactor and fix dmi_is_desktop() iwlwifi: pcie: fix emergency path leds: lp55xx: fix null deref on firmware load failure jbd2: fix race when writing superblock HID: intel-ish-hid: avoid binding wrong ishtp_cl_device vfs: fix preadv64v2 and pwritev64v2 compat syscalls with offset == -1 media: mtk-jpeg: Correct return type for mem2mem buffer helpers media: mx2_emmaprp: Correct return type for mem2mem buffer helpers media: s5p-g2d: Correct return type for mem2mem buffer helpers media: s5p-jpeg: Correct return type for mem2mem buffer helpers media: sh_veu: Correct return type for mem2mem buffer helpers SoC: imx-sgtl5000: add missing put_device() perf test: Fix failure of 'evsel-tp-sched' test on s390 scsi: fcoe: make use of fip_mode enum complete scsi: megaraid_sas: return error when create DMA pool failed efi: cper: Fix possible out-of-bounds access cpufreq: acpi-cpufreq: Report if CPU doesn't support boost technologies clk: fractional-divider: check parent rate only if flag is set IB/mlx4: Increase the timeout for CM cache mlxsw: spectrum: Avoid -Wformat-truncation warnings e1000e: Fix -Wformat-truncation warnings mmc: omap: fix the maximum timeout setting powerpc/hugetlb: Handle mmap_min_addr correctly in get_unmapped_area callback iommu/io-pgtable-arm-v7s: Only kmemleak_ignore L2 tables ARM: 8840/1: use a raw_spinlock_t in unwind serial: 8250_pxa: honor the port number from devicetree coresight: etm4x: Add support to enable ETMv4.2 powerpc/xmon: Fix opcode being uninitialized in print_insn_powerpc scsi: core: replace GFP_ATOMIC with GFP_KERNEL in scsi_scan.c usb: chipidea: Grab the (legacy) USB PHY by phandle first crypto: cavium/zip - fix collision with generic cra_driver_name crypto: crypto4xx - add missing of_node_put after of_device_is_available wil6210: check null pointer in _wil_cfg80211_merge_extra_ies PCI/PME: Fix hotplug/sysfs remove deadlock in pcie_pme_remove() tools lib traceevent: Fix buffer overflow in arg_eval fs: fix guard_bio_eod to check for real EOD errors jbd2: fix invalid descriptor block checksum cifs: Fix NULL pointer dereference of devname dm thin: add sanity checks to thin-pool and external snapshot creation cifs: use correct format characters page_poison: play nicely with KASAN fs/file.c: initialize init_files.resize_wait f2fs: do not use mutex lock in atomic context ocfs2: fix a panic problem caused by o2cb_ctl mm/slab.c: kmemleak no scan alien caches mm/vmalloc.c: fix kernel BUG at mm/vmalloc.c:512! mm, mempolicy: fix uninit memory access mm/page_ext.c: fix an imbalance with kmemleak mm/cma.c: cma_declare_contiguous: correct err handling perf c2c: Fix c2c report for empty numa node iio: adc: fix warning in Qualcomm PM8xxx HK/XOADC driver scsi: hisi_sas: Set PHY linkrate when disconnected enic: fix build warning without CONFIG_CPUMASK_OFFSTACK sysctl: handle overflow for file-max include/linux/relay.h: fix percpu annotation in struct rchan gpio: gpio-omap: fix level interrupt idling net/mlx5: Avoid panic when setting vport mac, getting vport config net/mlx5: Avoid panic when setting vport rate tracing: kdb: Fix ftdump to not sleep f2fs: fix to avoid deadlock in f2fs_read_inline_dir() h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux- CIFS: fix POSIX lock leak and invalid ptr deref mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified tty/serial: atmel: RS485 HD w/DMA: enable RX after TX is stopped tty/serial: atmel: Add is_half_duplex helper lib/int_sqrt: optimize initial value compute ext4: cleanup bh release code in ext4_ind_remove_space() arm64: debug: Don't propagate UNKNOWN FAR into si_code for debug signals ANDROID: cuttlefish_defconfig: Enable CONFIG_OVERLAY_FS ANDROID: cuttlefish: enable CONFIG_NET_SCH_INGRESS=y Conflicts: drivers/usb/gadget/function/f_fs.c mm/page_alloc.c net/netfilter/nf_conntrack_core.c Change-Id: I4a3db0717eb4f0f0d89e57f3167129bcd2419599 Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org> |
||
|
Blagovest Kolenichev
|
04cae5d915 |
Merge android-4.14 (fab7352) into msm-4.14
* refs/heads/tmp-fab7352:
f2fs: don't access node/meta inode mapping after iput
f2fs: wait on atomic writes to count F2FS_CP_WB_DATA
ANDROID: sched/fair: correct pelt load information in sched-pelt.h
f2fs: sanity check of xattr entry size
f2fs: fix use-after-free issue when accessing sbi->stat_info
f2fs: check PageWriteback flag for ordered case
f2fs: fix validation of the block count in sanity_check_raw_super
f2fs: fix missing unlock(sbi->gc_mutex)
f2fs: fix to dirty inode synchronously
f2fs: clean up structure extent_node
f2fs: fix block address for __check_sit_bitmap
f2fs: fix sbi->extent_list corruption issue
f2fs: clean up checkpoint flow
f2fs: flush stale issued discard candidates
f2fs: correct wrong spelling, issing_*
f2fs: use kvmalloc, if kmalloc is failed
f2fs: remove redundant comment of unused wio_mutex
f2fs: fix to reorder set_page_dirty and wait_on_page_writeback
f2fs: clear PG_writeback if IPU failed
f2fs: add an ioctl() to explicitly trigger fsck later
f2fs: avoid frequent costly fsck triggers
f2fs: fix m_may_create to make OPU DIO write correctly
f2fs: fix to update new block address correctly for OPU
f2fs: adjust trace print in f2fs_get_victim() to cover all paths
f2fs: fix to allow node segment for GC by ioctl path
f2fs: make "f2fs_fault_name[]" const char *
f2fs: read page index before freeing
f2fs: fix wrong return value of f2fs_acl_create
f2fs: avoid build warn of fall_through
f2fs: fix race between write_checkpoint and write_begin
f2fs: check memory boundary by insane namelen
f2fs: only flush the single temp bio cache which owns the target page
f2fs: fix out-place-update DIO write
f2fs: fix to be aware discard/preflush/dio command in is_idle()
f2fs: add to account direct IO
f2fs: move dir data flush to write checkpoint process
f2fs: change segment to section in f2fs_ioc_gc_range
f2fs: export migration_granularity sysfs entry
f2fs: support subsectional garbage collection
f2fs: introduce __is_large_section() for cleanup
f2fs: clean up f2fs_sb_has_##feature_name
f2fs: remove codes of unused wio_mutex
f2fs: fix count of seg_freed to make sec_freed correct
f2fs: fix to account preflush command for noflush_merge mode
f2fs: avoid GC causing encrypted file corrupted
ANDROID: cuttlefish_defconfig: Enable VIRTIO_INPUT
ANDROID: Revert fs/squashfs back to linux-4.14.y
BACKPORT: mm: Add an F_SEAL_FUTURE_WRITE seal to memfd
FROMGIT: dm verity: log the hash algorithm implementation
FROMGIT: dm crypt: log the encryption algorithm implementation
ANDROID: sched: Clean-up SchedTune documentation
ANDROID: sched/events: Fix out of bound memory access
ANDROID: revert all remaining hisi_thermal.c changes
ANDROID: modpost: add an exception for CFI stubs
FROMGIT: modpost: validate symbol names also in find_elf_symbol
ANDROID: cuttlefish_defconfig: Enable VIRT_WIFI
FROMGIT, BACKPORT: mac80211-next: rtnetlink wifi simulation device
ANDROID: cpufreq: times: add /proc/uid_concurrent_{active,policy}_time
ANDROID: cuttlefish_defconfig: Enable CONFIG_ARM64_LSE_ATOMICS
ANDROID: Move from clang r328903 to r346389b.
Fix merge issue from 4.14.85.
ANDROID: cuttlefish_defconfig: Enable CONFIG_CRYPTO_ADIANTUM
BACKPORT, FROMGIT: fscrypt: add Adiantum support
BACKPORT, FROMGIT: crypto: adiantum - add Adiantum support
FROMGIT: crypto: arm/nhpoly1305 - add NEON-accelerated NHPoly1305
BACKPORT, FROMGIT: crypto: nhpoly1305 - add NHPoly1305 support
FROMGIT: crypto: poly1305 - add Poly1305 core API
FROMGIT: crypto: poly1305 - use structures for key and accumulator
FROMGIT: crypto: arm/chacha - add XChaCha12 support
FROMGIT: crypto: arm/chacha20 - refactor to allow varying number of rounds
FROMGIT: crypto: arm/chacha20 - add XChaCha20 support
FROMGIT: crypto: arm/chacha20 - limit the preemption-disabled section
BACKPORT, FROMGIT: crypto: chacha - add XChaCha12 support
BACKPORT, FROMGIT: crypto: chacha20-generic - refactor to allow varying number of rounds
BACKPORT, FROMGIT: crypto: chacha20-generic - add XChaCha20 support
FROMGIT: crypto: chacha20-generic - don't unnecessarily use atomic walk
FROMGIT: crypto: chacha20-generic - add HChaCha20 library function
FROMGIT: crypto: arm/aes - add some hardening against cache-timing attacks
UPSTREAM: crypto: arm/aes-cipher - move S-box to .rodata section
UPSTREAM: crypto: arm/chacha20 - faster 8-bit rotations and other optimizations
UPSTREAM: crypto: arm/chacha20 - always use vrev for 16-bit rotates
UPSTREAM: crypto: poly1305 - use unaligned access macros to output digest
UPSTREAM: crypto: chacha20 - Fix chacha20_block() keystream alignment (again)
UPSTREAM: crypto: chacha20 - use rol32() macro from bitops.h
UPSTREAM: crypto: chacha20 - Fix keystream alignment for chacha20_block()
UPSTREAM: crypto: chacha20 - Remove cra_alignmask
UPSTREAM: crypto: chacha20 - Use unaligned access macros when loading key and IV
UPSTREAM: crypto: chacha20 - Fix unaligned access when loading constants
BACKPORT: sched/fair: Fix cpu_util_wake() for 'execl' type workloads
ANDROID: arm64 defconfig / build config for cuttlefish
ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple
ANDROID: sdcardfs: Add option to not link obb
ANDROID: sdcardfs: Add sandbox
Revert "proc: Convert proc_mount to use mount_ns."
ANDROID: sched/debug: Make Energy Model read-only
ANDROID: zram: set comp_len to PAGE_SIZE when page is huge
Revert "ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple"
UPSTREAM: arm64: Expose support for optional ARMv8-A features
Conflicts:
Makefile
drivers/block/zram/zram_drv.c
drivers/net/wireless/Kconfig
drivers/net/wireless/Makefile
fs/crypto/fscrypt_private.h
fs/crypto/keyinfo.c
fs/f2fs/inode.c
fs/f2fs/super.c
include/uapi/linux/fs.h
kernel/sched/fair.c
Change-Id: Ib1a971f6893061a5db7cbc3c474981463685c3a9
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
|
||
|
Greg Kroah-Hartman
|
171fc237b3 |
Merge 4.14.111 into android-4.14
Changes in 4.14.111 arm64: debug: Don't propagate UNKNOWN FAR into si_code for debug signals ext4: cleanup bh release code in ext4_ind_remove_space() lib/int_sqrt: optimize initial value compute tty/serial: atmel: Add is_half_duplex helper tty/serial: atmel: RS485 HD w/DMA: enable RX after TX is stopped mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified CIFS: fix POSIX lock leak and invalid ptr deref h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux- f2fs: fix to avoid deadlock in f2fs_read_inline_dir() tracing: kdb: Fix ftdump to not sleep net/mlx5: Avoid panic when setting vport rate net/mlx5: Avoid panic when setting vport mac, getting vport config gpio: gpio-omap: fix level interrupt idling include/linux/relay.h: fix percpu annotation in struct rchan sysctl: handle overflow for file-max enic: fix build warning without CONFIG_CPUMASK_OFFSTACK scsi: hisi_sas: Set PHY linkrate when disconnected iio: adc: fix warning in Qualcomm PM8xxx HK/XOADC driver perf c2c: Fix c2c report for empty numa node mm/cma.c: cma_declare_contiguous: correct err handling mm/page_ext.c: fix an imbalance with kmemleak mm, mempolicy: fix uninit memory access mm/vmalloc.c: fix kernel BUG at mm/vmalloc.c:512! mm/slab.c: kmemleak no scan alien caches ocfs2: fix a panic problem caused by o2cb_ctl f2fs: do not use mutex lock in atomic context fs/file.c: initialize init_files.resize_wait page_poison: play nicely with KASAN cifs: use correct format characters dm thin: add sanity checks to thin-pool and external snapshot creation cifs: Fix NULL pointer dereference of devname jbd2: fix invalid descriptor block checksum fs: fix guard_bio_eod to check for real EOD errors tools lib traceevent: Fix buffer overflow in arg_eval PCI/PME: Fix hotplug/sysfs remove deadlock in pcie_pme_remove() wil6210: check null pointer in _wil_cfg80211_merge_extra_ies crypto: crypto4xx - add missing of_node_put after of_device_is_available crypto: cavium/zip - fix collision with generic cra_driver_name usb: chipidea: Grab the (legacy) USB PHY by phandle first scsi: core: replace GFP_ATOMIC with GFP_KERNEL in scsi_scan.c powerpc/xmon: Fix opcode being uninitialized in print_insn_powerpc coresight: etm4x: Add support to enable ETMv4.2 serial: 8250_pxa: honor the port number from devicetree ARM: 8840/1: use a raw_spinlock_t in unwind iommu/io-pgtable-arm-v7s: Only kmemleak_ignore L2 tables powerpc/hugetlb: Handle mmap_min_addr correctly in get_unmapped_area callback mmc: omap: fix the maximum timeout setting e1000e: Fix -Wformat-truncation warnings mlxsw: spectrum: Avoid -Wformat-truncation warnings IB/mlx4: Increase the timeout for CM cache clk: fractional-divider: check parent rate only if flag is set cpufreq: acpi-cpufreq: Report if CPU doesn't support boost technologies efi: cper: Fix possible out-of-bounds access scsi: megaraid_sas: return error when create DMA pool failed scsi: fcoe: make use of fip_mode enum complete perf test: Fix failure of 'evsel-tp-sched' test on s390 SoC: imx-sgtl5000: add missing put_device() media: sh_veu: Correct return type for mem2mem buffer helpers media: s5p-jpeg: Correct return type for mem2mem buffer helpers media: s5p-g2d: Correct return type for mem2mem buffer helpers media: mx2_emmaprp: Correct return type for mem2mem buffer helpers media: mtk-jpeg: Correct return type for mem2mem buffer helpers vfs: fix preadv64v2 and pwritev64v2 compat syscalls with offset == -1 HID: intel-ish-hid: avoid binding wrong ishtp_cl_device jbd2: fix race when writing superblock leds: lp55xx: fix null deref on firmware load failure iwlwifi: pcie: fix emergency path ACPI / video: Refactor and fix dmi_is_desktop() kprobes: Prohibit probing on bsearch() netfilter: conntrack: fix cloned unconfirmed skb->_nfct race in __nf_conntrack_confirm ARM: 8833/1: Ensure that NEON code always compiles with Clang ALSA: PCM: check if ops are defined before suspending PCM usb: f_fs: Avoid crash due to out-of-scope stack ptr access sched/topology: Fix percpu data types in struct sd_data & struct s_data bcache: fix input overflow to cache set sysfs file io_error_halflife bcache: fix input overflow to sequential_cutoff bcache: improve sysfs_strtoul_clamp() genirq: Avoid summation loops for /proc/stat iw_cxgb4: fix srqidx leak during connection abort fbdev: fbmem: fix memory access if logo is bigger than the screen cdrom: Fix race condition in cdrom_sysctl_register e1000e: fix cyclic resets at link up with active tx platform/x86: intel_pmc_core: Fix PCH IP sts reading ASoC: fsl-asoc-card: fix object reference leaks in fsl_asoc_card_probe sched/debug: Initialize sd_sysctl_cpus if !CONFIG_CPUMASK_OFFSTACK efi/memattr: Don't bail on zero VA if it equals the region's PA ARM: dts: lpc32xx: Remove leading 0x and 0s from bindings notation efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted soc: qcom: gsbi: Fix error handling in gsbi_probe() mt7601u: bump supported EEPROM version ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care of ARM: avoid Cortex-A9 livelock on tight dmb loops bpf: fix missing prototype warnings cgroup/pids: turn cgroup_subsys->free() into cgroup_subsys->release() to fix the accounting backlight: pwm_bl: Use gpiod_get_value_cansleep() to get initial state tty: increase the default flip buffer limit to 2*640K powerpc/pseries: Perform full re-add of CPU for topology update post-migration usb: dwc3: gadget: Fix OTG events when gadget driver isn't loaded media: mt9m111: set initial frame size other than 0x0 hwrng: virtio - Avoid repeated init of completion soc/tegra: fuse: Fix illegal free of IO base address HID: intel-ish: ipc: handle PIMR before ish_wakeup also clear PISR busy_clear bit hpet: Fix missing '=' character in the __setup() code of hpet_mmap_enable cpu/hotplug: Mute hotplug lockdep during init dmaengine: imx-dma: fix warning comparison of distinct pointer types dmaengine: qcom_hidma: assign channel cookie correctly dmaengine: qcom_hidma: initialize tx flags in hidma_prep_dma_* netfilter: physdev: relax br_netfilter dependency media: s5p-jpeg: Check for fmt_ver_flag when doing fmt enumeration regulator: act8865: Fix act8600_sudcdc_voltage_ranges setting drm: Auto-set allow_fb_modifiers when given modifiers at plane init drm/nouveau: Stop using drm_crtc_force_disable x86/build: Specify elf_i386 linker emulation explicitly for i386 objects selinux: do not override context on context mounts wlcore: Fix memory leak in case wl12xx_fetch_firmware failure x86/build: Mark per-CPU symbols as absolute explicitly for LLD clk: rockchip: fix frac settings of GPLL clock for rk3328 dmaengine: tegra: avoid overflow of byte tracking drm/dp/mst: Configure no_stop_bit correctly for remote i2c xfers ACPI / video: Extend chassis-type detection with a "Lunch Box" check Linux 4.14.111 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
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|
Hidetoshi Seto
|
351ea69c29 |
sched/debug: Initialize sd_sysctl_cpus if !CONFIG_CPUMASK_OFFSTACK
[ Upstream commit 1ca4fa3ab604734e38e2a3000c9abf788512ffa7 ] register_sched_domain_sysctl() copies the cpu_possible_mask into sd_sysctl_cpus, but only if sd_sysctl_cpus hasn't already been allocated (ie, CONFIG_CPUMASK_OFFSTACK is set). However, when CONFIG_CPUMASK_OFFSTACK is not set, sd_sysctl_cpus is left uninitialized (all zeroes) and the kernel may fail to initialize sched_domain sysctl entries for all possible CPUs. This is visible to the user if the kernel is booted with maxcpus=n, or if ACPI tables have been modified to leave CPUs offline, and then checking for missing /proc/sys/kernel/sched_domain/cpu* entries. Fix this by separating the allocation and initialization, and adding a flag to initialize the possible CPU entries while system booting only. Tested-by: Syuuichirou Ishii <ishii.shuuichir@jp.fujitsu.com> Tested-by: Tarumizu, Kohei <tarumizu.kohei@jp.fujitsu.com> Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com> Acked-by: Joe Lawrence <joe.lawrence@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masayoshi Mizuma <msys.mizuma@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20190129151245.5073-1-msys.mizuma@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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|
Chris Redpath
|
d8dce63b04 |
ANDROID: sched/debug: Make Energy Model read-only
The energy model is exposed through the sched_domain entry in /proc/sys/kernel. This option only appears when SCHED_DEBUG is enabled, and is only writeable by the owner (root). Various userspace tools may read the energy model, including LISA (which uses it to brute-force calculate optimal energy placement for synthetic tasks), but none change it. Since there is no known use case for changing the energy model, change these procfs nodes to be read-only instead. This removes the need to add validation for values written into these files. Bug: 118694140 Change-Id: Ie997b5c4c9e751b21cc94d82b2b8b99640c524fa Signed-off-by: Chris Redpath <chris.redpath@arm.com> |
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Pavankumar Kondeti
|
eb35eebc5c |
sched: walt: Optimize cpu_util() and cpu_util_cum()
The task demand in 1024 units is readily available in task_struct, so use it directly for cumulative_runnable_avg and cum_window_demand accounting. The cpu_util() and cpu_util_cum() functions which are called multiple times during the task placement can return the scaled values without doing any math. Scaling the sum of unscaled demand of tasks is more accurate compared to the sum of scaled demand of tasks, but it is good enough for task placement decisions. Change-Id: Iba4be93cd34f130bed1cb533ecaa52ab8bae5f3d Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org> |
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Patrick Bellasi
|
8f24e60011 |
BACKPORT: sched/fair: Add util_est on top of PELT
The util_avg signal computed by PELT is too variable for some use-cases.
For example, a big task waking up after a long sleep period will have its
utilization almost completely decayed. This introduces some latency before
schedutil will be able to pick the best frequency to run a task.
The same issue can affect task placement. Indeed, since the task
utilization is already decayed at wakeup, when the task is enqueued in a
CPU, this can result in a CPU running a big task as being temporarily
represented as being almost empty. This leads to a race condition where
other tasks can be potentially allocated on a CPU which just started to run
a big task which slept for a relatively long period.
Moreover, the PELT utilization of a task can be updated every [ms], thus
making it a continuously changing value for certain longer running
tasks. This means that the instantaneous PELT utilization of a RUNNING
task is not really meaningful to properly support scheduler decisions.
For all these reasons, a more stable signal can do a better job of
representing the expected/estimated utilization of a task/cfs_rq.
Such a signal can be easily created on top of PELT by still using it as
an estimator which produces values to be aggregated on meaningful
events.
This patch adds a simple implementation of util_est, a new signal built on
top of PELT's util_avg where:
util_est(task) = max(task::util_avg, f(task::util_avg@dequeue))
This allows to remember how big a task has been reported by PELT in its
previous activations via f(task::util_avg@dequeue), which is the new
_task_util_est(struct task_struct*) function added by this patch.
If a task should change its behavior and it runs longer in a new
activation, after a certain time its util_est will just track the
original PELT signal (i.e. task::util_avg).
The estimated utilization of cfs_rq is defined only for root ones.
That's because the only sensible consumer of this signal are the
scheduler and schedutil when looking for the overall CPU utilization
due to FAIR tasks.
For this reason, the estimated utilization of a root cfs_rq is simply
defined as:
util_est(cfs_rq) = max(cfs_rq::util_avg, cfs_rq::util_est::enqueued)
where:
cfs_rq::util_est::enqueued = sum(_task_util_est(task))
for each RUNNABLE task on that root cfs_rq
It's worth noting that the estimated utilization is tracked only for
objects of interests, specifically:
- Tasks: to better support tasks placement decisions
- root cfs_rqs: to better support both tasks placement decisions as
well as frequencies selection
Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Morten Rasmussen <morten.rasmussen@arm.com>
Cc: Paul Turner <pjt@google.com>
Cc: Rafael J . Wysocki <rafael.j.wysocki@intel.com>
Cc: Steve Muckle <smuckle@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Todd Kjos <tkjos@android.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Link: http://lkml.kernel.org/r/20180309095245.11071-2-patrick.bellasi@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
[
backport from upstream:
commit 7f65ea42eb00 ("sched/fair: Add util_est on top of PELT")
No major changes.
]
Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
Change-Id: Icfa41dd73bd4da674b0044cacb11f320cf39eabf
Git-commit:
|
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Patrick Bellasi
|
700f1172f7 |
BACKPORT: sched/fair: Add util_est on top of PELT
The util_avg signal computed by PELT is too variable for some use-cases.
For example, a big task waking up after a long sleep period will have its
utilization almost completely decayed. This introduces some latency before
schedutil will be able to pick the best frequency to run a task.
The same issue can affect task placement. Indeed, since the task
utilization is already decayed at wakeup, when the task is enqueued in a
CPU, this can result in a CPU running a big task as being temporarily
represented as being almost empty. This leads to a race condition where
other tasks can be potentially allocated on a CPU which just started to run
a big task which slept for a relatively long period.
Moreover, the PELT utilization of a task can be updated every [ms], thus
making it a continuously changing value for certain longer running
tasks. This means that the instantaneous PELT utilization of a RUNNING
task is not really meaningful to properly support scheduler decisions.
For all these reasons, a more stable signal can do a better job of
representing the expected/estimated utilization of a task/cfs_rq.
Such a signal can be easily created on top of PELT by still using it as
an estimator which produces values to be aggregated on meaningful
events.
This patch adds a simple implementation of util_est, a new signal built on
top of PELT's util_avg where:
util_est(task) = max(task::util_avg, f(task::util_avg@dequeue))
This allows to remember how big a task has been reported by PELT in its
previous activations via f(task::util_avg@dequeue), which is the new
_task_util_est(struct task_struct*) function added by this patch.
If a task should change its behavior and it runs longer in a new
activation, after a certain time its util_est will just track the
original PELT signal (i.e. task::util_avg).
The estimated utilization of cfs_rq is defined only for root ones.
That's because the only sensible consumer of this signal are the
scheduler and schedutil when looking for the overall CPU utilization
due to FAIR tasks.
For this reason, the estimated utilization of a root cfs_rq is simply
defined as:
util_est(cfs_rq) = max(cfs_rq::util_avg, cfs_rq::util_est::enqueued)
where:
cfs_rq::util_est::enqueued = sum(_task_util_est(task))
for each RUNNABLE task on that root cfs_rq
It's worth noting that the estimated utilization is tracked only for
objects of interests, specifically:
- Tasks: to better support tasks placement decisions
- root cfs_rqs: to better support both tasks placement decisions as
well as frequencies selection
Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Morten Rasmussen <morten.rasmussen@arm.com>
Cc: Paul Turner <pjt@google.com>
Cc: Rafael J . Wysocki <rafael.j.wysocki@intel.com>
Cc: Steve Muckle <smuckle@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Todd Kjos <tkjos@android.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Link: http://lkml.kernel.org/r/20180309095245.11071-2-patrick.bellasi@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
[
backport from upstream:
commit 7f65ea42eb00 ("sched/fair: Add util_est on top of PELT")
No major changes.
]
Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
Change-Id: Icfa41dd73bd4da674b0044cacb11f320cf39eabf
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Satya Durga Srinivasu Prabhala
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a447a2a029 |
sched/debug: Show WALT specific details in /proc/sched_debug
WALT specific details can be very handy while debugging any issue on live target. Change-Id: I26f323393fd0f8d7c193f38dcea1531976d28272 Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org> |
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Dietmar Eggemann
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ab3f7e73d1 |
ANDROID: sched/debug: Add energy procfs interface
This patch makes the energy data available via procfs. The related files are placed as sub-directory named 'energy' inside the /proc/sys/kernel/sched_domain/cpuX/domainY/groupZ directory for those cpu/domain/group tuples which have energy information. The following example depicts the contents of /proc/sys/kernel/sched_domain/cpu0/domain0/group[01] for a system which has energy information attached to domain level 0. /--cpu0 | /--domain0 | | /--busy_factor | | |--busy_idx | | |--cache_nice_tries | | |--flags | | |--forkexec_idx | | |--group0 | | | /--energy | | | | /--cap_states | | | | |--idle_states | | | | |--nr_cap_states | | | | |--nr_idle_states | | |--group1 | | | /--energy | | | | /--cap_states | | | | |--idle_states | | | | |--nr_cap_states | | | | |--nr_idle_states | | |--idle_idx | | |--imbalance_pct | | |--max_interval | | |--max_newidle_lb_cost | | |--min_interval | | |--name | | |--newidle_idx | | |--wake_idx | |--domain1 | | /--busy_factor | | |--busy_idx | | |--cache_nice_tries | | |--flags | | |--forkexec_idx | | |--idle_idx | | |--imbalance_pct | | |--max_interval | | |--max_newidle_lb_cost | | |--min_interval | | |--name | | |--newidle_idx | | |--wake_idx The files 'nr_idle_states' and 'nr_cap_states' contain a scalar value whereas 'idle_states' and 'cap_states' contain a vector of power consumption at this idle state respectively (compute capacity, power consumption) at this capacity state. Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Change-Id: I2b96d1d46e38d1131e78c206cc1d94900e6d0690 Signed-off-by: Chris Redpath <chris.redpath@arm.com> |
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Peter Zijlstra
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65d5dc47fe |
sched/debug: Remove unused variable
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: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Linus Torvalds
|
ec846ecd63 |
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar: "Three CPU hotplug related fixes and a debugging improvement" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/debug: Add debugfs knob for "sched_debug" sched/core: WARN() when migrating to an offline CPU sched/fair: Plug hole between hotplug and active_load_balance() sched/fair: Avoid newidle balance for !active CPUs |
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Peter Zijlstra
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9469eb01db |
sched/debug: Add debugfs knob for "sched_debug"
I'm forever late for editing my kernel cmdline, add a runtime knob to disable the "sched_debug" thing. 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> Link: http://lkml.kernel.org/r/20170907150614.142924283@infradead.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Davidlohr Bueso
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bfb068892d |
sched/fair: replace cfs_rq->rb_leftmost
... with the generic rbtree flavor instead. No changes in semantics whatsoever. Link: http://lkml.kernel.org/r/20170719014603.19029-8-dave@stgolabs.net Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Peter Zijlstra
|
bbdacdfed2 |
sched/debug: Optimize sched_domain sysctl generation
Currently we unconditionally destroy all sysctl bits and regenerate them after we've rebuild the domains (even if that rebuild is a no-op). And since we unconditionally (re)build the sysctl for all possible CPUs, onlining all CPUs gets us O(n^2) time. Instead change this to only rebuild the bits for CPUs we've actually installed new domains on. Reported-by: Ofer Levi(SW) <oferle@mellanox.com> 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> Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Xie XiuQi
|
20435d84e5 |
sched/debug: Intruduce task_state_to_char() helper function
Now that we have more than one place to get the task state, intruduce the task_state_to_char() helper function to save some code. No functionality changed. Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: <cj.chengjian@huawei.com> Cc: <huawei.libin@huawei.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1502095463-160172-3-git-send-email-xiexiuqi@huawei.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Xie XiuQi
|
e8c164954b |
sched/debug: Show task state in /proc/sched_debug
Currently we print the runnable task in /proc/sched_debug, but there is no task state information. We don't know which task is in the runqueue and which task is sleeping. Add task state in the runnable task list, like this: runnable tasks: S task PID tree-key switches prio wait-time sum-exec sum-sleep ----------------------------------------------------------------------------------------------------------- S watchdog/239 1452 -11.917445 2811 0 0.000000 8.949306 0.000000 7 0 / S migration/239 1453 20686.367740 8 0 0.000000 16215.720897 0.000000 7 0 / S ksoftirqd/239 1454 115383.841071 12 120 0.000000 0.200683 0.000000 7 0 / >R test 21287 4872.190970 407 120 0.000000 4874.911790 0.000000 7 0 /autogroup-150 R test 21288 4868.385454 401 120 0.000000 3672.341489 0.000000 7 0 /autogroup-150 R test 21289 4868.326776 384 120 0.000000 3424.934159 0.000000 7 0 /autogroup-150 Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: <cj.chengjian@huawei.com> Cc: <huawei.libin@huawei.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1502095463-160172-2-git-send-email-xiexiuqi@huawei.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Aleksa Sarai
|
74dc3384fc |
sched/debug: Use task_pid_nr_ns in /proc/$pid/sched
It appears as though the addition of the PID namespace did not update the output code for /proc/*/sched, which resulted in it providing PIDs that were not self-consistent with the /proc mount. This additionally made it trivial to detect whether a process was inside &init_pid_ns from userspace, making container detection trivial: https://github.com/jessfraz/amicontained This leads to situations such as: % unshare -pmf % mount -t proc proc /proc % head -n1 /proc/1/sched head (10047, #threads: 1) Fix this by just using task_pid_nr_ns for the output of /proc/*/sched. All of the other uses of task_pid_nr in kernel/sched/debug.c are from a sysctl context and thus don't need to be namespaced. Signed-off-by: Aleksa Sarai <asarai@suse.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Jess Frazelle <acidburn@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: cyphar@cyphar.com Link: http://lkml.kernel.org/r/20170806044141.5093-1-asarai@suse.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Daniel Bristot de Oliveira
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48365b3884 |
sched/debug: Expose the number of RT/DL tasks that can migrate
Add the value of the rt_rq.rt_nr_migratory and dl_rq.dl_nr_migratory to the sched_debug output, for instance: rt_rq[0]: .rt_nr_running : 2 .rt_nr_migratory : 1 <--- Like this .rt_throttled : 0 .rt_time : 828.645877 .rt_runtime : 1000.000000 This is useful to debug problems related to the RT/DL schedulers. This also fixes the format of some variables, that were unsigned, rather than signed. Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com> Cc: Clark Williams <williams@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luis Claudio R. Goncalves <lgoncalv@redhat.com> Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-rt-users <linux-rt-users@vger.kernel.org> Link: http://lkml.kernel.org/r/7896f71cada54ee7dd8507bb666063a2e051c3d4.1498482127.git.bristot@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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f719ff9bce |
sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>
But first update the code that uses these facilities with the new header. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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589ee62844 |
sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>
Update code that relied on sched.h including various MM types for them. This will allow us to remove the <linux/mm_types.h> include from <linux/sched.h>. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Tommaso Cucinotta
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59f8c29892 |
sched/deadline: Show leftover runtime and abs deadline in /proc/*/sched
This patch allows for reading the current (leftover) runtime and absolute deadline of a SCHED_DEADLINE task through /proc/*/sched (entries dl.runtime and dl.deadline), while debugging/testing. Signed-off-by: Tommaso Cucinotta <tommaso.cucinotta@sssup.it> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Juri Lelli <juri.lelli@arm.com> Reviewed-by: Luca Abeni <luca.abeni@unitn.it> Acked-by: Daniel Bistrot de Oliveira <danielbristot@gmail.com> Cc: Juri Lelli <juri.lelli@gmail.com> 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> Link: http://lkml.kernel.org/r/1477473437-10346-2-git-send-email-tommaso.cucinotta@sssup.it Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Linus Torvalds
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f34d3606f7 |
Merge branch 'for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo: - tracepoints for basic cgroup management operations added - kernfs and cgroup path formatting functions updated to behave in the style of strlcpy() - non-critical bug fixes * 'for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: blkcg: Unlock blkcg_pol_mutex only once when cpd == NULL cgroup: fix error handling regressions in proc_cgroup_show() and cgroup_release_agent() cpuset: fix error handling regression in proc_cpuset_show() cgroup: add tracepoints for basic operations cgroup: make cgroup_path() and friends behave in the style of strlcpy() kernfs: remove kernfs_path_len() kernfs: make kernfs_path*() behave in the style of strlcpy() kernfs: add dummy implementation of kernfs_path_from_node() |
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Josh Poimboeuf
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4fa8d299b4 |
sched/debug: Remove several CONFIG_SCHEDSTATS guards
Clean up the sched code by removing several of the CONFIG_SCHEDSTATS
guards, using schedstat_*() macros where needed.
Code size:
!CONFIG_SCHEDSTATS defconfig:
text data bss dec hex filename
10209818 4368184 1105920 15683922 ef5152 vmlinux.before.nostats
10209818 4368184 1105920 15683922 ef5152 vmlinux.after.nostats
CONFIG_SCHEDSTATS defconfig:
text data bss dec hex filename
10214210 4370040 1105920 15690170 ef69ba vmlinux.before.stats
10214210 4370680 1105920 15690810 ef6c3a vmlinux.after.stats
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/e51e0ebe5af95ac295de720dd252e7c0d2142e4a.1466184592.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Josh Poimboeuf
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20e1d4863b |
sched/debug: Rename 'schedstat_val()' -> 'schedstat_val_or_zero()'
The schedstat_val() macro's behavior is kind of surprising: when schedstat is runtime disabled, it returns zero. Rename it to schedstat_val_or_zero(). There's also a need for a similar macro which doesn't have the 'if (schedstat_enable())' check, to avoid doing the check twice. Create a new 'schedstat_val()' macro for that. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/3bb1d2367d041fee333b0dde17171e709395b675.1466184592.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Josh Poimboeuf
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ae92882e56 |
sched/debug: Clean up schedstat macros
The schedstat_*() macros are inconsistent: most of them take a pointer and a field which the macro combines, whereas schedstat_set() takes the already combined ptr->field. The already combined ptr->field argument is actually more intuitive and easier to use, and there's no reason to require the user to split the variable up, so convert the macros to use the combined argument. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/54953ca25bb579f3a5946432dee409b0e05222c6.1466184592.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Tejun Heo
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4c737b41de |
cgroup: make cgroup_path() and friends behave in the style of strlcpy()
cgroup_path() and friends used to format the path from the end and thus the resulting path usually didn't start at the start of the passed in buffer. Also, when the buffer was too small, the partial result was truncated from the head rather than tail and there was no way to tell how long the full path would be. These make the functions less robust and more awkward to use. With recent updates to kernfs_path(), cgroup_path() and friends can be made to behave in strlcpy() style. * cgroup_path(), cgroup_path_ns[_locked]() and task_cgroup_path() now always return the length of the full path. If buffer is too small, it contains nul terminated truncated output. * All users updated accordingly. v2: cgroup_path() usage in kernel/sched/debug.c converted. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Serge Hallyn <serge.hallyn@ubuntu.com> Cc: Peter Zijlstra <peterz@infradead.org> |
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Josh Poimboeuf
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03c041c5bf |
sched/debug: Always show 'nr_migrations'
The nr_migrations field is updated independently of CONFIG_SCHEDSTATS, so it can be displayed regardless. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Mel Gorman <mgorman@techsingularity.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/5b1b04057ae2b14d73c2d03f56582c1d38cfe066.1464994423.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Josh Poimboeuf
|
9c57259117 |
sched/debug: Fix /proc/sched_debug regression
Commit: |
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Wanpeng Li
|
db6ea2fb09 |
sched/debug: Print out idle balance values even on !CONFIG_SCHEDSTATS kernels
The max_idle_balance_cost and avg_idle values which are tracked and ar used to capture short idle incidents, are not associated with schedstats, however the information of these two values isn't printed out on !CONFIG_SCHEDSTATS kernels. Fix this by moving the value printout out of the CONFIG_SCHEDSTATS section. Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> 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> Link: http://lkml.kernel.org/r/1462250305-4523-1-git-send-email-wanpeng.li@hotmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Steven Rostedt (Red Hat)
|
ef477183d0 |
sched/debug: Add deadline scheduler bandwidth ratio to /proc/sched_debug
Playing with SCHED_DEADLINE and cpusets, I found that I was unable to create
new SCHED_DEADLINE tasks, with the error of EBUSY as if the bandwidth was
already used up. I then realized there wa no way to see what bandwidth is
used by the runqueues to debug the issue.
By adding the dl_bw->bw and dl_bw->total_bw to the output of the deadline
info in /proc/sched_debug, this allows us to see what bandwidth has been
reserved and where a problem may exist.
For example, before the issue we see the ratio of the bandwidth:
# cat /proc/sys/kernel/sched_rt_runtime_us
950000
# cat /proc/sys/kernel/sched_rt_period_us
1000000
# grep dl /proc/sched_debug
dl_rq[0]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : 0
dl_rq[1]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : 0
dl_rq[2]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : 0
dl_rq[3]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : 0
dl_rq[4]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : 0
dl_rq[5]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : 0
dl_rq[6]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : 0
dl_rq[7]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : 0
Note: (950000 / 1000000) << 20 == 996147
After I played with cpusets and hit the issue, the result is now:
# grep dl /proc/sched_debug
dl_rq[0]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : -104857
dl_rq[1]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : 104857
dl_rq[2]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : 104857
dl_rq[3]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : 104857
dl_rq[4]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : -104857
dl_rq[5]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : -104857
dl_rq[6]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : -104857
dl_rq[7]:
.dl_nr_running : 0
.dl_bw->bw : 996147
.dl_bw->total_bw : -104857
This shows that there is definitely a problem as we should never have a
negative total bandwidth.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Clark Williams <williams@redhat.com>
Cc: Juri Lelli <juri.lelli@gmail.com>
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>
Link: http://lkml.kernel.org/r/20160222212825.756849091@goodmis.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
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Steven Rostedt (Red Hat)
|
3866e845ed |
sched/debug: Move sched_domain_sysctl to debug.c
The sched_domain_sysctl setup is only enabled when SCHED_DEBUG is configured. As debug.c is only compiled when SCHED_DEBUG is configured as well, move the setup of sched_domain_sysctl into that file. Note, the (un)register_sched_domain_sysctl() functions had to be changed from static to allow access to them from core.c. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Clark Williams <williams@redhat.com> Cc: Juri Lelli <juri.lelli@gmail.com> 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> Link: http://lkml.kernel.org/r/20160222212825.599278093@goodmis.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Steven Rostedt (Red Hat)
|
d6ca41d792 |
sched/debug: Move the /sys/kernel/debug/sched_features file setup into debug.c
As /sys/kernel/debug/sched_features is only created when SCHED_DEBUG is enabled, and the file debug.c is only compiled when SCHED_DEBUG is enabled, it makes sense to move sched_feature setup into that file and get rid of the #ifdef. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Clark Williams <williams@redhat.com> Cc: Juri Lelli <juri.lelli@gmail.com> 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> Link: http://lkml.kernel.org/r/20160222212825.464193063@goodmis.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Mel Gorman
|
cb2517653f |
sched/debug: Make schedstats a runtime tunable that is disabled by default
schedstats is very useful during debugging and performance tuning but it
incurs overhead to calculate the stats. As such, even though it can be
disabled at build time, it is often enabled as the information is useful.
This patch adds a kernel command-line and sysctl tunable to enable or
disable schedstats on demand (when it's built in). It is disabled
by default as someone who knows they need it can also learn to enable
it when necessary.
The benefits are dependent on how scheduler-intensive the workload is.
If it is then the patch reduces the number of cycles spent calculating
the stats with a small benefit from reducing the cache footprint of the
scheduler.
These measurements were taken from a 48-core 2-socket
machine with Xeon(R) E5-2670 v3 cpus although they were also tested on a
single socket machine 8-core machine with Intel i7-3770 processors.
netperf-tcp
4.5.0-rc1 4.5.0-rc1
vanilla nostats-v3r1
Hmean 64 560.45 ( 0.00%) 575.98 ( 2.77%)
Hmean 128 766.66 ( 0.00%) 795.79 ( 3.80%)
Hmean 256 950.51 ( 0.00%) 981.50 ( 3.26%)
Hmean 1024 1433.25 ( 0.00%) 1466.51 ( 2.32%)
Hmean 2048 2810.54 ( 0.00%) 2879.75 ( 2.46%)
Hmean 3312 4618.18 ( 0.00%) 4682.09 ( 1.38%)
Hmean 4096 5306.42 ( 0.00%) 5346.39 ( 0.75%)
Hmean 8192 10581.44 ( 0.00%) 10698.15 ( 1.10%)
Hmean 16384 18857.70 ( 0.00%) 18937.61 ( 0.42%)
Small gains here, UDP_STREAM showed nothing intresting and neither did
the TCP_RR tests. The gains on the 8-core machine were very similar.
tbench4
4.5.0-rc1 4.5.0-rc1
vanilla nostats-v3r1
Hmean mb/sec-1 500.85 ( 0.00%) 522.43 ( 4.31%)
Hmean mb/sec-2 984.66 ( 0.00%) 1018.19 ( 3.41%)
Hmean mb/sec-4 1827.91 ( 0.00%) 1847.78 ( 1.09%)
Hmean mb/sec-8 3561.36 ( 0.00%) 3611.28 ( 1.40%)
Hmean mb/sec-16 5824.52 ( 0.00%) 5929.03 ( 1.79%)
Hmean mb/sec-32 10943.10 ( 0.00%) 10802.83 ( -1.28%)
Hmean mb/sec-64 15950.81 ( 0.00%) 16211.31 ( 1.63%)
Hmean mb/sec-128 15302.17 ( 0.00%) 15445.11 ( 0.93%)
Hmean mb/sec-256 14866.18 ( 0.00%) 15088.73 ( 1.50%)
Hmean mb/sec-512 15223.31 ( 0.00%) 15373.69 ( 0.99%)
Hmean mb/sec-1024 14574.25 ( 0.00%) 14598.02 ( 0.16%)
Hmean mb/sec-2048 13569.02 ( 0.00%) 13733.86 ( 1.21%)
Hmean mb/sec-3072 12865.98 ( 0.00%) 13209.23 ( 2.67%)
Small gains of 2-4% at low thread counts and otherwise flat. The
gains on the 8-core machine were slightly different
tbench4 on 8-core i7-3770 single socket machine
Hmean mb/sec-1 442.59 ( 0.00%) 448.73 ( 1.39%)
Hmean mb/sec-2 796.68 ( 0.00%) 794.39 ( -0.29%)
Hmean mb/sec-4 1322.52 ( 0.00%) 1343.66 ( 1.60%)
Hmean mb/sec-8 2611.65 ( 0.00%) 2694.86 ( 3.19%)
Hmean mb/sec-16 2537.07 ( 0.00%) 2609.34 ( 2.85%)
Hmean mb/sec-32 2506.02 ( 0.00%) 2578.18 ( 2.88%)
Hmean mb/sec-64 2511.06 ( 0.00%) 2569.16 ( 2.31%)
Hmean mb/sec-128 2313.38 ( 0.00%) 2395.50 ( 3.55%)
Hmean mb/sec-256 2110.04 ( 0.00%) 2177.45 ( 3.19%)
Hmean mb/sec-512 2072.51 ( 0.00%) 2053.97 ( -0.89%)
In constract, this shows a relatively steady 2-3% gain at higher thread
counts. Due to the nature of the patch and the type of workload, it's
not a surprise that the result will depend on the CPU used.
hackbench-pipes
4.5.0-rc1 4.5.0-rc1
vanilla nostats-v3r1
Amean 1 0.0637 ( 0.00%) 0.0660 ( -3.59%)
Amean 4 0.1229 ( 0.00%) 0.1181 ( 3.84%)
Amean 7 0.1921 ( 0.00%) 0.1911 ( 0.52%)
Amean 12 0.3117 ( 0.00%) 0.2923 ( 6.23%)
Amean 21 0.4050 ( 0.00%) 0.3899 ( 3.74%)
Amean 30 0.4586 ( 0.00%) 0.4433 ( 3.33%)
Amean 48 0.5910 ( 0.00%) 0.5694 ( 3.65%)
Amean 79 0.8663 ( 0.00%) 0.8626 ( 0.43%)
Amean 110 1.1543 ( 0.00%) 1.1517 ( 0.22%)
Amean 141 1.4457 ( 0.00%) 1.4290 ( 1.16%)
Amean 172 1.7090 ( 0.00%) 1.6924 ( 0.97%)
Amean 192 1.9126 ( 0.00%) 1.9089 ( 0.19%)
Some small gains and losses and while the variance data is not included,
it's close to the noise. The UMA machine did not show anything particularly
different
pipetest
4.5.0-rc1 4.5.0-rc1
vanilla nostats-v2r2
Min Time 4.13 ( 0.00%) 3.99 ( 3.39%)
1st-qrtle Time 4.38 ( 0.00%) 4.27 ( 2.51%)
2nd-qrtle Time 4.46 ( 0.00%) 4.39 ( 1.57%)
3rd-qrtle Time 4.56 ( 0.00%) 4.51 ( 1.10%)
Max-90% Time 4.67 ( 0.00%) 4.60 ( 1.50%)
Max-93% Time 4.71 ( 0.00%) 4.65 ( 1.27%)
Max-95% Time 4.74 ( 0.00%) 4.71 ( 0.63%)
Max-99% Time 4.88 ( 0.00%) 4.79 ( 1.84%)
Max Time 4.93 ( 0.00%) 4.83 ( 2.03%)
Mean Time 4.48 ( 0.00%) 4.39 ( 1.91%)
Best99%Mean Time 4.47 ( 0.00%) 4.39 ( 1.91%)
Best95%Mean Time 4.46 ( 0.00%) 4.38 ( 1.93%)
Best90%Mean Time 4.45 ( 0.00%) 4.36 ( 1.98%)
Best50%Mean Time 4.36 ( 0.00%) 4.25 ( 2.49%)
Best10%Mean Time 4.23 ( 0.00%) 4.10 ( 3.13%)
Best5%Mean Time 4.19 ( 0.00%) 4.06 ( 3.20%)
Best1%Mean Time 4.13 ( 0.00%) 4.00 ( 3.39%)
Small improvement and similar gains were seen on the UMA machine.
The gain is small but it stands to reason that doing less work in the
scheduler is a good thing. The downside is that the lack of schedstats and
tracepoints may be surprising to experts doing performance analysis until
they find the existence of the schedstats= parameter or schedstats sysctl.
It will be automatically activated for latencytop and sleep profiling to
alleviate the problem. For tracepoints, there is a simple warning as it's
not safe to activate schedstats in the context when it's known the tracepoint
may be wanted but is unavailable.
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <mgalbraith@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1454663316-22048-1-git-send-email-mgorman@techsingularity.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Yuyang Du
|
139622343e |
sched/fair: Provide runnable_load_avg back to cfs_rq
The cfs_rq's load_avg is composed of runnable_load_avg and blocked_load_avg. Before this series, sometimes the runnable_load_avg is used, and sometimes the load_avg is used. Completely replacing all uses of runnable_load_avg with load_avg may be too big a leap, i.e., the blocked_load_avg is concerned to result in overrated load. Therefore, we get runnable_load_avg back. The new cfs_rq's runnable_load_avg is improved to be updated with all of the runnable sched_eneities at the same time, so the one sched_entity updated and the others stale problem is solved. Signed-off-by: Yuyang Du <yuyang.du@intel.com> 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: arjan@linux.intel.com Cc: bsegall@google.com Cc: dietmar.eggemann@arm.com Cc: fengguang.wu@intel.com Cc: len.brown@intel.com Cc: morten.rasmussen@arm.com Cc: pjt@google.com Cc: rafael.j.wysocki@intel.com Cc: umgwanakikbuti@gmail.com Cc: vincent.guittot@linaro.org Link: http://lkml.kernel.org/r/1436918682-4971-7-git-send-email-yuyang.du@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Yuyang Du
|
9d89c257df |
sched/fair: Rewrite runnable load and utilization average tracking
The idea of runnable load average (let runnable time contribute to weight)
was proposed by Paul Turner and Ben Segall, and it is still followed by
this rewrite. This rewrite aims to solve the following issues:
1. cfs_rq's load average (namely runnable_load_avg and blocked_load_avg) is
updated at the granularity of an entity at a time, which results in the
cfs_rq's load average is stale or partially updated: at any time, only
one entity is up to date, all other entities are effectively lagging
behind. This is undesirable.
To illustrate, if we have n runnable entities in the cfs_rq, as time
elapses, they certainly become outdated:
t0: cfs_rq { e1_old, e2_old, ..., en_old }
and when we update:
t1: update e1, then we have cfs_rq { e1_new, e2_old, ..., en_old }
t2: update e2, then we have cfs_rq { e1_old, e2_new, ..., en_old }
...
We solve this by combining all runnable entities' load averages together
in cfs_rq's avg, and update the cfs_rq's avg as a whole. This is based
on the fact that if we regard the update as a function, then:
w * update(e) = update(w * e) and
update(e1) + update(e2) = update(e1 + e2), then
w1 * update(e1) + w2 * update(e2) = update(w1 * e1 + w2 * e2)
therefore, by this rewrite, we have an entirely updated cfs_rq at the
time we update it:
t1: update cfs_rq { e1_new, e2_new, ..., en_new }
t2: update cfs_rq { e1_new, e2_new, ..., en_new }
...
2. cfs_rq's load average is different between top rq->cfs_rq and other
task_group's per CPU cfs_rqs in whether or not blocked_load_average
contributes to the load.
The basic idea behind runnable load average (the same for utilization)
is that the blocked state is taken into account as opposed to only
accounting for the currently runnable state. Therefore, the average
should include both the runnable/running and blocked load averages.
This rewrite does that.
In addition, we also combine runnable/running and blocked averages
of all entities into the cfs_rq's average, and update it together at
once. This is based on the fact that:
update(runnable) + update(blocked) = update(runnable + blocked)
This significantly reduces the code as we don't need to separately
maintain/update runnable/running load and blocked load.
3. How task_group entities' share is calculated is complex and imprecise.
We reduce the complexity in this rewrite to allow a very simple rule:
the task_group's load_avg is aggregated from its per CPU cfs_rqs's
load_avgs. Then group entity's weight is simply proportional to its
own cfs_rq's load_avg / task_group's load_avg. To illustrate,
if a task_group has { cfs_rq1, cfs_rq2, ..., cfs_rqn }, then,
task_group_avg = cfs_rq1_avg + cfs_rq2_avg + ... + cfs_rqn_avg, then
cfs_rqx's entity's share = cfs_rqx_avg / task_group_avg * task_group's share
To sum up, this rewrite in principle is equivalent to the current one, but
fixes the issues described above. Turns out, it significantly reduces the
code complexity and hence increases clarity and efficiency. In addition,
the new averages are more smooth/continuous (no spurious spikes and valleys)
and updated more consistently and quickly to reflect the load dynamics.
As a result, we have less load tracking overhead, better performance,
and especially better power efficiency due to more balanced load.
Signed-off-by: Yuyang Du <yuyang.du@intel.com>
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: arjan@linux.intel.com
Cc: bsegall@google.com
Cc: dietmar.eggemann@arm.com
Cc: fengguang.wu@intel.com
Cc: len.brown@intel.com
Cc: morten.rasmussen@arm.com
Cc: pjt@google.com
Cc: rafael.j.wysocki@intel.com
Cc: umgwanakikbuti@gmail.com
Cc: vincent.guittot@linaro.org
Link: http://lkml.kernel.org/r/1436918682-4971-3-git-send-email-yuyang.du@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
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Yuyang Du
|
cd126afe83 |
sched/fair: Remove rq's runnable avg
The current rq->avg is not used at all since its merge into the kernel, and the code is in the scheduler's hot path, so remove it. Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Yuyang Du <yuyang.du@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> 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: arjan@linux.intel.com Cc: bsegall@google.com Cc: fengguang.wu@intel.com Cc: len.brown@intel.com Cc: morten.rasmussen@arm.com Cc: pjt@google.com Cc: rafael.j.wysocki@intel.com Cc: umgwanakikbuti@gmail.com Cc: vincent.guittot@linaro.org Link: http://lkml.kernel.org/r/1436918682-4971-2-git-send-email-yuyang.du@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Srikar Dronamraju
|
397f2378f1 |
sched/numa: Fix numa balancing stats in /proc/pid/sched
Commit
|
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Srikar Dronamraju
|
e3d24d0a60 |
sched/numa: Show numa_group ID in /proc/sched_debug task listings
Having the numa group ID in /proc/sched_debug helps to see how the numa groups have spread across the system. Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Acked-by: Rik van Riel <riel@redhat.com> Cc: Iulia Manda <iulia.manda21@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1435252903-1081-3-git-send-email-srikar@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Linus Torvalds
|
43224b96af |
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"A rather largish update for everything time and timer related:
- Cache footprint optimizations for both hrtimers and timer wheel
- Lower the NOHZ impact on systems which have NOHZ or timer migration
disabled at runtime.
- Optimize run time overhead of hrtimer interrupt by making the clock
offset updates smarter
- hrtimer cleanups and removal of restrictions to tackle some
problems in sched/perf
- Some more leap second tweaks
- Another round of changes addressing the 2038 problem
- First step to change the internals of clock event devices by
introducing the necessary infrastructure
- Allow constant folding for usecs/msecs_to_jiffies()
- The usual pile of clockevent/clocksource driver updates
The hrtimer changes contain updates to sched, perf and x86 as they
depend on them plus changes all over the tree to cleanup API changes
and redundant code, which got copied all over the place. The y2038
changes touch s390 to remove the last non 2038 safe code related to
boot/persistant clock"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (114 commits)
clocksource: Increase dependencies of timer-stm32 to limit build wreckage
timer: Minimize nohz off overhead
timer: Reduce timer migration overhead if disabled
timer: Stats: Simplify the flags handling
timer: Replace timer base by a cpu index
timer: Use hlist for the timer wheel hash buckets
timer: Remove FIFO "guarantee"
timers: Sanitize catchup_timer_jiffies() usage
hrtimer: Allow hrtimer::function() to free the timer
seqcount: Introduce raw_write_seqcount_barrier()
seqcount: Rename write_seqcount_barrier()
hrtimer: Fix hrtimer_is_queued() hole
hrtimer: Remove HRTIMER_STATE_MIGRATE
selftest: Timers: Avoid signal deadlock in leap-a-day
timekeeping: Copy the shadow-timekeeper over the real timekeeper last
clockevents: Check state instead of mode in suspend/resume path
selftests: timers: Add leap-second timer edge testing to leap-a-day.c
ntp: Do leapsecond adjustment in adjtimex read path
time: Prevent early expiry of hrtimers[CLOCK_REALTIME] at the leap second edge
ntp: Introduce and use SECS_PER_DAY macro instead of 86400
...
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Srikar Dronamraju
|
82a0d27626 |
sched/debug: Add sum_sleep_runtime to /proc/<pid>/sched
When CONFIG_SCHEDSTATS is enabled, /proc/<pid>/sched prints almost all sched statistics except sum_sleep_runtime. Since sum_sleep_runtime is a good info to collect, add this it to /proc/<pid>/sched. Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1433751041-11724-4-git-send-email-srikar@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Srikar Dronamraju
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c5f3ab1c3b |
sched/debug: Replace vruntime with wait_sum in /proc/sched_debug
Within runnable tasks in /proc/sched_debug, vruntime is printed twice, once as tree-key and again as exec-runtime. Since exec-runtime isnt populated in !CONFIG_SCHEDSTATS, use this field to print wait_sum. Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1433751041-11724-3-git-send-email-srikar@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |