The value is only available in debugfs. Export it to allow out of tree
modules to modify it.
Bug: 340857074
Bug: 337139487
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: I4b3a5aeeee0539b88756aacc97df6181f68d9d0d
(cherry picked from commit 0d080e01a2)
Export two functions to help memory reclaim.
Bug: 323406883
Change-Id: I099d414c9b3648224ab077b9929c6622b2d4228a
Signed-off-by: Minchan Kim <minchan@google.com>
The extern declaration ended up at the end of rt.c instead of sched.h by
mistake.
Bug: 332629555
Fixes: dcdec80d6b ("ANDROID: Export cpu_busy_with_softirqs()")
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: Id95a1c2261134c4d4f589ec51d350fc5eb2724f9
This function used to be called task_may_not_preempt() in older versions
and used by modules that have their extension to RT. Export it to allow
users to continue to use it.
Bug: 332629555
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: I04affb8e9e6258f9fb36ebab4d7956a265e9e299
This reverts commit 6bad1052c2, it is the
LTS merge that had to previously get reverted due to being merged too
early.
Cc: Todd Kjos <tkjos@google.com>
Change-Id: I31b7d660bd833cf022ac4870f6d01e723fda5182
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
kthread_park and wait_woken have a similar race that
kthread_stop and wait_woken used to have before it was fixed in
commit cb6538e740 ("sched/wait: Fix a kthread race with
wait_woken()"). Extend that fix to also cover kthread_park.
[jstultz: Made changes suggested by Peter to optimize
memory loads]
Change-Id: Idd1381e297efb1f2493deedcc0fc0288f0027fef
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <vschneid@redhat.com>
Link: https://lore.kernel.org/r/20230602212350.535358-1-jstultz@google.com
(cherry picked from commit ef73d6a4ef0b35524125c3cfc6deafc26a0c966a)
In kernel 6.1 pending softirq won’t block turning off idle tick,
so it will take longer to be handled.
This is for power saving purposes but has extra delay then the 5.15 kernel.
From above, it needs to export raise_softirq for external module to
speed up the time sensitive event.
Bug: 324080017
Test: build pass, raise_softirq can be used
Change-Id: I675d5927d000ae5c372e6a88a1eda3101152e709
Signed-off-by: Paul Chen <chenpaul@google.com>
This reverts commit 1dbafe61e3.
Reason for revert: Too early. Needs to wait until 2024-03-27
Change-Id: I769b944bd089aa2278659ec87f7ba4ac4e74ee4a
Signed-off-by: Todd Kjos <tkjos@google.com>
CONFIG_TASK_DELAY_ACCT cannot be enabled since `struct task_struct`
is KMI frozen. Instead, use vendor hooks to allow delay accounting
to be implemented in a vendor module.
Bug: 327566572
Bug: 310129610
Bug: 314931189
Change-Id: If814d7834889fe162aba3dd97e935289127ca3ae
Signed-off-by: Dongyun Liu <dongyun.liu@transsion.com>
(cherry picked from commit bb57557246d39dba8a66df7f43983fe1ec71bff6)
(cherry picked from commit 896cff873452d9a3853c489bb2a173a1e290ca95)
Vendors might want to change tasks affinity settings when they are
moving from one cpuset into the other. Add vendor hook to give control
to vendor to implement what they need.
This reverts commit a42f6e7d0aa0("Revert "ANDROID: sched/cpuset: Add
vendor hook to change tasks affinity"") to effectively bring back the
original change.
Bug: 323765868
Change-Id: I47c1ee0dabda491732932c653bd80e95ee550791
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
Signed-off-by: Sai Harshini Nimmala <quic_snimmala@quicinc.com>
Add hook for trace_android_vh_copy_process, which gives the vendor a chance to monitor the total thread count of the system and the thread count under a particular process
Bug: 325765508
Change-Id: Ibeb8aa571d44997ac10623321cd00d1686bde033
Signed-off-by: chenweitao <chenweitao@oppo.com>
This reverts commit e05b322c82 which is
commit 20c20bd11a0702ce4dc9300c3da58acf551d9725 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I7c833819474d28953527a2d06d9d17746c98dfb5
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 62fca83303 which is
commit 876673364161da50eed6b472d746ef88242b2368 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I11fc14db5e679ca1c8ff97dcd96cb2a8fd35122a
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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Merge 6.1.75 into android14-6.1-lts
Changes in 6.1.75
x86/lib: Fix overflow when counting digits
x86/mce/inject: Clear test status value
EDAC/thunderx: Fix possible out-of-bounds string access
powerpc: remove checks for binutils older than 2.25
powerpc: add crtsavres.o to always-y instead of extra-y
powerpc/44x: select I2C for CURRITUCK
powerpc/pseries/memhp: Fix access beyond end of drmem array
selftests/powerpc: Fix error handling in FPU/VMX preemption tests
powerpc/powernv: Add a null pointer check to scom_debug_init_one()
powerpc/powernv: Add a null pointer check in opal_event_init()
powerpc/powernv: Add a null pointer check in opal_powercap_init()
powerpc/imc-pmu: Add a null pointer check in update_events_in_group()
spi: spi-zynqmp-gqspi: fix driver kconfig dependencies
mtd: rawnand: Increment IFC_TIMEOUT_MSECS for nand controller response
ACPI: video: check for error while searching for backlight device parent
ACPI: LPIT: Avoid u32 multiplication overflow
KEYS: encrypted: Add check for strsep
platform/x86/intel/vsec: Enhance and Export intel_vsec_add_aux()
platform/x86/intel/vsec: Support private data
platform/x86/intel/vsec: Use mutex for ida_alloc() and ida_free()
platform/x86/intel/vsec: Fix xa_alloc memory leak
of: Add of_property_present() helper
cpufreq: Use of_property_present() for testing DT property presence
cpufreq: scmi: process the result of devm_of_clk_add_hw_provider()
calipso: fix memory leak in netlbl_calipso_add_pass()
efivarfs: force RO when remounting if SetVariable is not supported
efivarfs: Free s_fs_info on unmount
spi: sh-msiof: Enforce fixed DTDL for R-Car H3
ACPI: LPSS: Fix the fractional clock divider flags
ACPI: extlog: Clear Extended Error Log status when RAS_CEC handled the error
kunit: debugfs: Fix unchecked dereference in debugfs_print_results()
mtd: Fix gluebi NULL pointer dereference caused by ftl notifier
selinux: Fix error priority for bind with AF_UNSPEC on PF_INET6 socket
crypto: virtio - Handle dataq logic with tasklet
crypto: sa2ul - Return crypto_aead_setkey to transfer the error
crypto: ccp - fix memleak in ccp_init_dm_workarea
crypto: af_alg - Disallow multiple in-flight AIO requests
crypto: safexcel - Add error handling for dma_map_sg() calls
crypto: sahara - remove FLAGS_NEW_KEY logic
crypto: sahara - fix cbc selftest failure
crypto: sahara - fix ahash selftest failure
crypto: sahara - fix processing requests with cryptlen < sg->length
crypto: sahara - fix error handling in sahara_hw_descriptor_create()
crypto: hisilicon/qm - save capability registers in qm init process
crypto: hisilicon/zip - add zip comp high perf mode configuration
crypto: hisilicon/qm - add a function to set qm algs
crypto: hisilicon/hpre - save capability registers in probe process
crypto: hisilicon/sec2 - save capability registers in probe process
crypto: hisilicon/zip - save capability registers in probe process
pstore: ram_core: fix possible overflow in persistent_ram_init_ecc()
erofs: fix memory leak on short-lived bounced pages
fs: indicate request originates from old mount API
gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump
crypto: virtio - Wait for tasklet to complete on device remove
crypto: sahara - avoid skcipher fallback code duplication
crypto: sahara - handle zero-length aes requests
crypto: sahara - fix ahash reqsize
crypto: sahara - fix wait_for_completion_timeout() error handling
crypto: sahara - improve error handling in sahara_sha_process()
crypto: sahara - fix processing hash requests with req->nbytes < sg->length
crypto: sahara - do not resize req->src when doing hash operations
crypto: scomp - fix req->dst buffer overflow
csky: fix arch_jump_label_transform_static override
blocklayoutdriver: Fix reference leak of pnfs_device_node
NFSv4.1/pnfs: Ensure we handle the error NFS4ERR_RETURNCONFLICT
SUNRPC: fix _xprt_switch_find_current_entry logic
pNFS: Fix the pnfs block driver's calculation of layoutget size
wifi: plfxlc: check for allocation failure in plfxlc_usb_wreq_async()
wifi: rtw88: fix RX filter in FIF_ALLMULTI flag
bpf, lpm: Fix check prefixlen before walking trie
bpf: Add crosstask check to __bpf_get_stack
wifi: ath11k: Defer on rproc_get failure
wifi: libertas: stop selecting wext
ARM: dts: qcom: apq8064: correct XOADC register address
net/ncsi: Fix netlink major/minor version numbers
firmware: ti_sci: Fix an off-by-one in ti_sci_debugfs_create()
firmware: meson_sm: populate platform devices from sm device tree data
wifi: rtlwifi: rtl8821ae: phy: fix an undefined bitwise shift behavior
arm64: dts: ti: k3-am62a-main: Fix GPIO pin count in DT nodes
arm64: dts: ti: k3-am65-main: Fix DSS irq trigger type
selftests/bpf: Fix erroneous bitmask operation
md: synchronize flush io with array reconfiguration
bpf: enforce precision of R0 on callback return
ARM: dts: qcom: sdx65: correct SPMI node name
arm64: dts: qcom: sc7180: Make watchdog bark interrupt edge triggered
arm64: dts: qcom: sc7280: Mark some nodes as 'reserved'
arm64: dts: qcom: sc7280: Make watchdog bark interrupt edge triggered
arm64: dts: qcom: sdm845: Make watchdog bark interrupt edge triggered
arm64: dts: qcom: sm8150: Make watchdog bark interrupt edge triggered
arm64: dts: qcom: sm8250: Make watchdog bark interrupt edge triggered
arm64: dts: qcom: sc8280xp: Make watchdog bark interrupt edge triggered
arm64: dts: qcom: sm6350: Make watchdog bark interrupt edge triggered
rcu-tasks: Provide rcu_trace_implies_rcu_gp()
bpf: add percpu stats for bpf_map elements insertions/deletions
bpf: Add map and need_defer parameters to .map_fd_put_ptr()
bpf: Defer the free of inner map when necessary
selftests/net: specify the interface when do arping
bpf: fix check for attempt to corrupt spilled pointer
scsi: fnic: Return error if vmalloc() failed
arm64: dts: qcom: qrb5165-rb5: correct LED panic indicator
arm64: dts: qcom: sdm845-db845c: correct LED panic indicator
arm64: dts: qcom: sm8350: Fix DMA0 address
arm64: dts: qcom: sc7280: Fix up GPU SIDs
arm64: dts: qcom: sc7280: Mark Adreno SMMU as DMA coherent
arm64: dts: qcom: sc7280: fix usb_2 wakeup interrupt types
wifi: mt76: mt7921s: fix workqueue problem causes STA association fail
bpf: Fix verification of indirect var-off stack access
arm64: dts: hisilicon: hikey970-pmic: fix regulator cells properties
dt-bindings: media: mediatek: mdp3: correct RDMA and WROT node with generic names
arm64: dts: mediatek: mt8183: correct MDP3 DMA-related nodes
wifi: mt76: mt7921: fix country count limitation for CLC
selftests/bpf: Relax time_tai test for equal timestamps in tai_forward
block: Set memalloc_noio to false on device_add_disk() error path
arm64: dts: renesas: white-hawk-cpu: Fix missing serial console pin control
arm64: dts: imx8mm: Reduce GPU to nominal speed
scsi: hisi_sas: Replace with standard error code return value
scsi: hisi_sas: Rollback some operations if FLR failed
scsi: hisi_sas: Correct the number of global debugfs registers
ARM: dts: stm32: don't mix SCMI and non-SCMI board compatibles
selftests/net: fix grep checking for fib_nexthop_multiprefix
ipmr: support IP_PKTINFO on cache report IGMP msg
virtio/vsock: fix logic which reduces credit update messages
dma-mapping: clear dev->dma_mem to NULL after freeing it
soc: qcom: llcc: Fix dis_cap_alloc and retain_on_pc configuration
arm64: dts: qcom: sm8150-hdk: fix SS USB regulators
block: add check of 'minors' and 'first_minor' in device_add_disk()
arm64: dts: qcom: sc7280: Mark SDHCI hosts as cache-coherent
arm64: dts: qcom: ipq6018: fix clock rates for GCC_USB0_MOCK_UTMI_CLK
arm64: dts: qcom: ipq6018: improve pcie phy pcs reg table
arm64: dts: qcom: ipq6018: Use lowercase hex
arm64: dts: qcom: ipq6018: Pad addresses to 8 hex digits
arm64: dts: qcom: ipq6018: Fix up indentation
wifi: rtlwifi: add calculate_bit_shift()
wifi: rtlwifi: rtl8188ee: phy: using calculate_bit_shift()
wifi: rtlwifi: rtl8192c: using calculate_bit_shift()
wifi: rtlwifi: rtl8192cu: using calculate_bit_shift()
wifi: rtlwifi: rtl8192ce: using calculate_bit_shift()
wifi: rtlwifi: rtl8192de: using calculate_bit_shift()
wifi: rtlwifi: rtl8192ee: using calculate_bit_shift()
wifi: rtlwifi: rtl8192se: using calculate_bit_shift()
wifi: iwlwifi: mvm: set siso/mimo chains to 1 in FW SMPS request
wifi: iwlwifi: mvm: send TX path flush in rfkill
netfilter: nf_tables: mark newset as dead on transaction abort
Bluetooth: Fix bogus check for re-auth no supported with non-ssp
Bluetooth: btmtkuart: fix recv_buf() return value
block: make BLK_DEF_MAX_SECTORS unsigned
null_blk: don't cap max_hw_sectors to BLK_DEF_MAX_SECTORS
bpf: sockmap, fix proto update hook to avoid dup calls
sctp: support MSG_ERRQUEUE flag in recvmsg()
sctp: fix busy polling
net/sched: act_ct: fix skb leak and crash on ooo frags
mlxbf_gige: Fix intermittent no ip issue
mlxbf_gige: Enable the GigE port in mlxbf_gige_open
ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim()
ARM: davinci: always select CONFIG_CPU_ARM926T
Revert "drm/tidss: Annotate dma-fence critical section in commit path"
Revert "drm/omapdrm: Annotate dma-fence critical section in commit path"
drm/panfrost: Really power off GPU cores in panfrost_gpu_power_off()
RDMA/usnic: Silence uninitialized symbol smatch warnings
RDMA/hns: Fix inappropriate err code for unsupported operations
drm/panel-elida-kd35t133: hold panel in reset for unprepare
drm/nouveau/fence:: fix warning directly dereferencing a rcu pointer
drm/bridge: tpd12s015: Drop buggy __exit annotation for remove function
drm/tilcdc: Fix irq free on unload
media: pvrusb2: fix use after free on context disconnection
media: mtk-jpegdec: export jpeg decoder functions
media: mtk-jpeg: Remove cancel worker in mtk_jpeg_remove to avoid the crash of multi-core JPEG devices
media: verisilicon: Hook the (TRY_)DECODER_CMD stateless ioctls
media: rkvdec: Hook the (TRY_)DECODER_CMD stateless ioctls
drm/bridge: Fix typo in post_disable() description
f2fs: fix to avoid dirent corruption
drm/radeon/r600_cs: Fix possible int overflows in r600_cs_check_reg()
drm/radeon/r100: Fix integer overflow issues in r100_cs_track_check()
drm/radeon: check return value of radeon_ring_lock()
drm/tidss: Move reset to the end of dispc_init()
drm/tidss: Return error value from from softreset
drm/tidss: Check for K2G in in dispc_softreset()
drm/tidss: Fix dss reset
ASoC: cs35l33: Fix GPIO name and drop legacy include
ASoC: cs35l34: Fix GPIO name and drop legacy include
drm/msm/mdp4: flush vblank event on disable
drm/msm/dsi: Use pm_runtime_resume_and_get to prevent refcnt leaks
drm/drv: propagate errors from drm_modeset_register_all()
ASoC: Intel: glk_rt5682_max98357a: fix board id mismatch
drm/panfrost: Ignore core_mask for poweroff and disable PWRTRANS irq
drm/radeon: check the alloc_workqueue return value in radeon_crtc_init()
drm/radeon/dpm: fix a memleak in sumo_parse_power_table
drm/radeon/trinity_dpm: fix a memleak in trinity_parse_power_table
drm/bridge: cdns-mhdp8546: Fix use of uninitialized variable
drm/bridge: tc358767: Fix return value on error case
media: cx231xx: fix a memleak in cx231xx_init_isoc
RDMA/hns: Fix memory leak in free_mr_init()
clk: qcom: gpucc-sm8150: Update the gpu_cc_pll1 config
media: imx-mipi-csis: Fix clock handling in remove()
media: dt-bindings: media: rkisp1: Fix the port description for the parallel interface
media: rkisp1: Fix media device memory leak
drm/panel: st7701: Fix AVCL calculation
f2fs: fix to wait on block writeback for post_read case
f2fs: fix to check compress file in f2fs_move_file_range()
f2fs: fix to update iostat correctly in f2fs_filemap_fault()
media: dvbdev: drop refcount on error path in dvb_device_open()
media: dvb-frontends: m88ds3103: Fix a memory leak in an error handling path of m88ds3103_probe()
clk: renesas: rzg2l-cpg: Reuse code in rzg2l_cpg_reset()
clk: renesas: rzg2l: Check reset monitor registers
drm/msm/dpu: Set input_sel bit for INTF
drm/msm/dpu: Drop enable and frame_count parameters from dpu_hw_setup_misr()
drm/mediatek: Return error if MDP RDMA failed to enable the clock
drm/mediatek: Fix underrun in VDO1 when switches off the layer
drm/amdgpu/debugfs: fix error code when smc register accessors are NULL
drm/amd/pm: fix a double-free in si_dpm_init
drivers/amd/pm: fix a use-after-free in kv_parse_power_table
gpu/drm/radeon: fix two memleaks in radeon_vm_init
drm/amd/pm: fix a double-free in amdgpu_parse_extended_power_table
f2fs: fix to check return value of f2fs_recover_xattr_data
dt-bindings: clock: Update the videocc resets for sm8150
clk: qcom: videocc-sm8150: Update the videocc resets
clk: qcom: videocc-sm8150: Add missing PLL config property
drivers: clk: zynqmp: calculate closest mux rate
drivers: clk: zynqmp: update divider round rate logic
watchdog: set cdev owner before adding
watchdog/hpwdt: Only claim UNKNOWN NMI if from iLO
watchdog: bcm2835_wdt: Fix WDIOC_SETTIMEOUT handling
watchdog: rti_wdt: Drop runtime pm reference count when watchdog is unused
clk: si5341: fix an error code problem in si5341_output_clk_set_rate
drm/mediatek: dp: Add phy_mtk_dp module as pre-dependency
accel/habanalabs: fix information leak in sec_attest_info()
clk: fixed-rate: fix clk_hw_register_fixed_rate_with_accuracy_parent_hw
pwm: stm32: Use regmap_clear_bits and regmap_set_bits where applicable
pwm: stm32: Use hweight32 in stm32_pwm_detect_channels
pwm: stm32: Fix enable count for clk in .probe()
ASoC: rt5645: Drop double EF20 entry from dmi_platform_data[]
ALSA: scarlett2: Add missing error check to scarlett2_config_save()
ALSA: scarlett2: Add missing error check to scarlett2_usb_set_config()
ALSA: scarlett2: Allow passing any output to line_out_remap()
ALSA: scarlett2: Add missing error checks to *_ctl_get()
ALSA: scarlett2: Add clamp() in scarlett2_mixer_ctl_put()
mmc: sdhci_am654: Fix TI SoC dependencies
mmc: sdhci_omap: Fix TI SoC dependencies
IB/iser: Prevent invalidating wrong MR
drm/amdkfd: Confirm list is non-empty before utilizing list_first_entry in kfd_topology.c
drm/amd/pm/smu7: fix a memleak in smu7_hwmgr_backend_init
kselftest/alsa - mixer-test: fix the number of parameters to ksft_exit_fail_msg()
kselftest/alsa - mixer-test: Fix the print format specifier warning
ksmbd: validate the zero field of packet header
of: Fix double free in of_parse_phandle_with_args_map
fbdev: imxfb: fix left margin setting
of: unittest: Fix of_count_phandle_with_args() expected value message
selftests/bpf: Add assert for user stacks in test_task_stack
keys, dns: Fix size check of V1 server-list header
binder: fix async space check for 0-sized buffers
binder: fix unused alloc->free_async_space
mips/smp: Call rcutree_report_cpu_starting() earlier
Input: atkbd - use ab83 as id when skipping the getid command
xen-netback: don't produce zero-size SKB frags
binder: fix race between mmput() and do_exit()
clocksource/drivers/timer-ti-dm: Fix make W=n kerneldoc warnings
powerpc/64s: Increase default stack size to 32KB
tick-sched: Fix idle and iowait sleeptime accounting vs CPU hotplug
usb: phy: mxs: remove CONFIG_USB_OTG condition for mxs_phy_is_otg_host()
usb: dwc: ep0: Update request status in dwc3_ep0_stall_restart
Revert "usb: dwc3: Soft reset phy on probe for host"
Revert "usb: dwc3: don't reset device side if dwc3 was configured as host-only"
usb: chipidea: wait controller resume finished for wakeup irq
usb: cdns3: fix uvc failure work since sg support enabled
usb: cdns3: fix iso transfer error when mult is not zero
usb: cdns3: Fix uvc fail when DMA cross 4k boundery since sg enabled
Revert "usb: typec: class: fix typec_altmode_put_partner to put plugs"
usb: typec: class: fix typec_altmode_put_partner to put plugs
usb: mon: Fix atomicity violation in mon_bin_vma_fault
serial: core: fix sanitizing check for RTS settings
serial: core: make sure RS485 cannot be enabled when it is not supported
serial: 8250_bcm2835aux: Restore clock error handling
serial: core, imx: do not set RS485 enabled if it is not supported
serial: imx: Ensure that imx_uart_rs485_config() is called with enabled clock
serial: 8250_exar: Set missing rs485_supported flag
serial: omap: do not override settings for RS485 support
drm/vmwgfx: Fix possible invalid drm gem put calls
drm/vmwgfx: Keep a gem reference to user bos in surfaces
ALSA: oxygen: Fix right channel of capture volume mixer
ALSA: hda/relatek: Enable Mute LED on HP Laptop 15s-fq2xxx
ALSA: hda/realtek: Enable mute/micmute LEDs and limit mic boost on HP ZBook
ALSA: hda/realtek: Enable headset mic on Lenovo M70 Gen5
ksmbd: validate mech token in session setup
ksmbd: fix UAF issue in ksmbd_tcp_new_connection()
ksmbd: only v2 leases handle the directory
io_uring/rw: ensure io->bytes_done is always initialized
fbdev: flush deferred work in fb_deferred_io_fsync()
fbdev: flush deferred IO before closing
scsi: ufs: core: Simplify power management during async scan
scsi: target: core: add missing file_{start,end}_write()
scsi: mpi3mr: Refresh sdev queue depth after controller reset
scsi: mpi3mr: Block PEL Enable Command on Controller Reset and Unrecoverable State
drm/amd: Enable PCIe PME from D3
block: add check that partition length needs to be aligned with block size
block: Fix iterating over an empty bio with bio_for_each_folio_all
netfilter: nf_tables: check if catch-all set element is active in next generation
pwm: jz4740: Don't use dev_err_probe() in .request()
pwm: Fix out-of-bounds access in of_pwm_single_xlate()
md/raid1: Use blk_opf_t for read and write operations
rootfs: Fix support for rootfstype= when root= is given
Bluetooth: Fix atomicity violation in {min,max}_key_size_set
bpf: Fix re-attachment branch in bpf_tracing_prog_attach
LoongArch: Fix and simplify fcsr initialization on execve()
iommu/arm-smmu-qcom: Add missing GMU entry to match table
iommu/dma: Trace bounce buffer usage when mapping buffers
wifi: mt76: fix broken precal loading from MTD for mt7915
wifi: rtlwifi: Remove bogus and dangerous ASPM disable/enable code
wifi: rtlwifi: Convert LNKCTL change to PCIe cap RMW accessors
wifi: mwifiex: configure BSSID consistently when starting AP
Revert "net: rtnetlink: Enslave device before bringing it up"
cxl/port: Fix decoder initialization when nr_targets > interleave_ways
PCI/P2PDMA: Remove reference to pci_p2pdma_map_sg()
PCI: dwc: endpoint: Fix dw_pcie_ep_raise_msix_irq() alignment support
PCI: mediatek: Clear interrupt status before dispatching handler
x86/kvm: Do not try to disable kvmclock if it was not enabled
KVM: arm64: vgic-v4: Restore pending state on host userspace write
KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache
iio: adc: ad7091r: Pass iio_dev to event handler
HID: wacom: Correct behavior when processing some confidence == false touches
serial: sc16is7xx: add check for unsupported SPI modes during probe
serial: sc16is7xx: set safe default SPI clock frequency
ARM: 9330/1: davinci: also select PINCTRL
mfd: syscon: Fix null pointer dereference in of_syscon_register()
leds: aw2013: Select missing dependency REGMAP_I2C
mfd: intel-lpss: Fix the fractional clock divider flags
mips: dmi: Fix early remap on MIPS32
mips: Fix incorrect max_low_pfn adjustment
riscv: Check if the code to patch lies in the exit section
riscv: Fix module_alloc() that did not reset the linear mapping permissions
riscv: Fix set_memory_XX() and set_direct_map_XX() by splitting huge linear mappings
riscv: Fix set_direct_map_default_noflush() to reset _PAGE_EXEC
riscv: Fixed wrong register in XIP_FIXUP_FLASH_OFFSET macro
MIPS: Alchemy: Fix an out-of-bound access in db1200_dev_setup()
MIPS: Alchemy: Fix an out-of-bound access in db1550_dev_setup()
power: supply: cw2015: correct time_to_empty units in sysfs
power: supply: bq256xx: fix some problem in bq256xx_hw_init
serial: 8250: omap: Don't skip resource freeing if pm_runtime_resume_and_get() failed
libapi: Add missing linux/types.h header to get the __u64 type on io.h
base/node.c: initialize the accessor list before registering
acpi: property: Let args be NULL in __acpi_node_get_property_reference
software node: Let args be NULL in software_node_get_reference_args
serial: imx: fix tx statemachine deadlock
selftests/sgx: Fix uninitialized pointer dereference in error path
selftests/sgx: Fix uninitialized pointer dereferences in encl_get_entry
selftests/sgx: Include memory clobber for inline asm in test enclave
selftests/sgx: Skip non X86_64 platform
iio: adc: ad9467: fix reset gpio handling
iio: adc: ad9467: don't ignore error codes
iio: adc: ad9467: fix scale setting
perf header: Fix one memory leakage in perf_event__fprintf_event_update()
perf hisi-ptt: Fix one memory leakage in hisi_ptt_process_auxtrace_event()
perf genelf: Set ELF program header addresses properly
tty: change tty_write_lock()'s ndelay parameter to bool
tty: early return from send_break() on TTY_DRIVER_HARDWARE_BREAK
tty: don't check for signal_pending() in send_break()
tty: use 'if' in send_break() instead of 'goto'
usb: cdc-acm: return correct error code on unsupported break
spmi: mtk-pmif: Serialize PMIF status check and command submission
vdpa: Fix an error handling path in eni_vdpa_probe()
nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length
nvmet-tcp: fix a crash in nvmet_req_complete()
perf env: Avoid recursively taking env->bpf_progs.lock
cxl/region: fix x9 interleave typo
apparmor: avoid crash when parsed profile name is empty
usb: xhci-mtk: fix a short packet issue of gen1 isoc-in transfer
serial: imx: Correct clock error message in function probe()
nvmet: re-fix tracing strncpy() warning
nvme: trace: avoid memcpy overflow warning
nvmet-tcp: Fix the H2C expected PDU len calculation
PCI: keystone: Fix race condition when initializing PHYs
PCI: mediatek-gen3: Fix translation window size calculation
ASoC: mediatek: sof-common: Add NULL check for normal_link string
s390/pci: fix max size calculation in zpci_memcpy_toio()
net: qualcomm: rmnet: fix global oob in rmnet_policy
net: ethernet: ti: am65-cpsw: Fix max mtu to fit ethernet frames
amt: do not use overwrapped cb area
net: phy: micrel: populate .soft_reset for KSZ9131
mptcp: mptcp_parse_option() fix for MPTCPOPT_MP_JOIN
mptcp: strict validation before using mp_opt->hmac
mptcp: use OPTION_MPTCP_MPJ_SYNACK in subflow_finish_connect()
mptcp: use OPTION_MPTCP_MPJ_SYN in subflow_check_req()
mptcp: refine opt_mp_capable determination
block: ensure we hold a queue reference when using queue limits
udp: annotate data-races around up->pending
net: ravb: Fix dma_addr_t truncation in error case
dt-bindings: gpio: xilinx: Fix node address in gpio
drm/amdkfd: Use resource_size() helper function
drm/amdkfd: fixes for HMM mem allocation
net: stmmac: ethtool: Fixed calltrace caused by unbalanced disable_irq_wake calls
bpf: Reject variable offset alu on PTR_TO_FLOW_KEYS
net: dsa: vsc73xx: Add null pointer check to vsc73xx_gpio_probe
LoongArch: BPF: Prevent out-of-bounds memory access
mptcp: relax check on MPC passive fallback
netfilter: nf_tables: reject invalid set policy
netfilter: nft_limit: do not ignore unsupported flags
netfilter: nfnetlink_log: use proper helper for fetching physinif
netfilter: nf_queue: remove excess nf_bridge variable
netfilter: propagate net to nf_bridge_get_physindev
netfilter: bridge: replace physindev with physinif in nf_bridge_info
netfilter: nf_tables: do not allow mismatch field size and set key length
netfilter: nf_tables: skip dead set elements in netlink dump
netfilter: nf_tables: reject NFT_SET_CONCAT with not field length description
ipvs: avoid stat macros calls from preemptible context
kdb: Fix a potential buffer overflow in kdb_local()
ethtool: netlink: Add missing ethnl_ops_begin/complete
loop: fix the the direct I/O support check when used on top of block devices
mlxsw: spectrum_acl_erp: Fix error flow of pool allocation failure
selftests: mlxsw: qos_pfc: Adjust the test to support 8 lanes
ipv6: mcast: fix data-race in ipv6_mc_down / mld_ifc_work
i2c: s3c24xx: fix read transfers in polling mode
i2c: s3c24xx: fix transferring more than one message in polling mode
block: Remove special-casing of compound pages
riscv: Fix wrong usage of lm_alias() when splitting a huge linear mapping
Revert "KEYS: encrypted: Add check for strsep"
arm64: dts: armada-3720-turris-mox: set irq type for RTC
Revert "Revert "md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d""
Linux 6.1.75
Change-Id: I60398ecc9a2e50206fd9d25c0d6c9ad6e1ca71a0
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
We need the updates in the normal branch due to the symbol changes
happening. This consists of the following changes:
* 92432f07d6 ANDROID: GKI: Update the ABI symbol list
* b86713e341 UPSTREAM: virtio: Add support for no-reset virtio PCI PM
* 7dc3b2e49e UPSTREAM: netfilter: nf_tables: check if catch-all set element is active in next generation
* 8d4d76a2bd UPSTREAM: net: tls, update curr on splice as well
* 9e2b775333 ANDROID: Update the ABI symbol list
* 5a1f8b6b46 ANDROID: Add pci_read_config_word to virtual device symbol list
* e356cae969 ANDROID: Export kthread_set_per_cpu
* 81c922621d ANDROID: GKI: fix ABI breakage in struct ipv6_devconf
* 20131b787f Reapply "net: release reference to inet6_dev pointer"
* c2c0273029 Reapply "net: change accept_ra_min_rtr_lft to affect all RA lifetimes"
* a8053aadca Reapply "net: add sysctl accept_ra_min_rtr_lft"
* fc6c1b3acb ANDROID: GKI: explicit include of stringify.h
* 8481b97df5 BACKPORT: erofs: fix infinite loop due to a race of filling compressed_bvecs
* 886c9d1fc2 ANDROID: arm64: virt: Invalidate tlb once the balloon before reporting/inflating
* 4aedc102c3 ANDROID: arm64: virt: Make the page_relinquish call generic
* d3f73f0452 UPSTREAM: drm/msm/dsi: Use pm_runtime_resume_and_get to prevent refcnt leaks
* df2fe1add7 UPSTREAM: drm/msm/dsi: Enable runtime PM
* 6053d8ffd4 UPSTREAM: arm64: scs: Disable LTO for SCS patching code
* 696293ef72 ANDROID: GKI: Update symbol list for mtk
* 6338e41509 BACKPORT: f2fs: Restrict max filesize for 16K f2fs
* 8c8bcbdf0b BACKPORT: f2fs: Support Block Size == Page Size
* eb20497d6d ANDROID: abi_gki_aarch64_qcom: Update symbol list
* 1e6c1ca9a2 UPSTREAM: usb: typec: tcpm: fix the PD disabled case
* ba97ad7b91 UPSTREAM: netfilter: nf_tables: reject QUEUE/DROP verdict parameters
* 76f0396b57 ANDROID: ABI: Update oplus symbol list
* 016b640235 ANDROID: fuse: Fix the issue of fuse_dentry_canonical_path
* 5eb1cbb384 ANDROID: Update the ABI symbol list
* b53c3cb351 ANDROID: Export cpufreq_driver_test_flags()
* 9b476ebe99 ANDROID: Build null_blk and scsi_debug as kernel modules
* 01472f3af1 ANDROID: GKI: Update the pixel symbol list
* fbcd29ac45 ANDROID: usb: dwc3: export tracepoint for dwc3 read/write
* 0123832f68 ANDROID: scsi: ufs: add vendor hook to override key reprogramming
* 7ce117301e ANDROID: vendor_hooks: Add hook for binder_detect_low_async_space_locked
* 7b6a6228df ANDROID: Update the ABI symbol list
* db94de2a17 ANDROID: Update the ABI representation
* e08371bcf5 UPSTREAM: usb: typec: tcpm: Support multiple capabilities
* 4025820c61 UPSTREAM: usb: typec: tcpm: Parse Accessory Mode information
Change-Id: Ibe422d476544081f14095e025b2a77ab70c577df
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
kthread_create_on_cpu no longer marks the created thread as a per cpu
thread, so the affinity might get lost on suspend or other hotplug
events.
Export kthread_set_per_cpu so a module that needs a kthread to stay on a
specific cpu can accomplish that.
Bug: 274202992
Change-Id: Iaafc12f93f341f9e0586cb051b7f1c941f140866
Signed-off-by: Arve Hjønnevåg <arve@android.com>
(cherry picked from commit 4fdc7e4658212c096bd19fe7196296955942f7e5)
Backmerge the latest android14-6.1 changes into the lts branch to keep
up to date. Contains the following commits:
* 3578913b2e UPSTREAM: net/rose: Fix Use-After-Free in rose_ioctl
* 8fbed1ea00 UPSTREAM: ida: Fix crash in ida_free when the bitmap is empty
* 6ce5bb744e ANDROID: GKI: Update symbol list for mtk
* 7cbad58851 Reapply "perf: Disallow mis-matched inherited group reads"
* 067a03c44e ANDROID: GKI: Add Pasa symbol list
* b6be1a36f7 FROMGIT: mm: memcg: don't periodically flush stats when memcg is disabled
* d0e2d333f9 ANDROID: Update the ABI symbol list
* 10558542a1 ANDROID: sched: export update_misfit_status symbol
* a0b3b39898 ANDROID: GKI: Add ASR KMI symbol list
* 599710db0f FROMGIT: usb: dwc3: gadget: Fix NULL pointer dereference in dwc3_gadget_suspend
* 9265fa90c1 FROMLIST: usb: core: Prevent null pointer dereference in update_port_device_state
* 2730733d54 ANDROID: gki_defconfig: Enable CONFIG_NVME_MULTIPATH
* 4f668f5682 BACKPORT: irqchip/gic-v3: Work around affinity issues on ASR8601
* 473a871315 BACKPORT: irqchip/gic-v3: Improve affinity helper
* 6c32acf537 UPSTREAM: sched/fair: Limit sched slice duration
* 7088d250bf ANDROID: Update the ABI symbol list
* c249740414 ANDROID: idle_inject: Export function symbols
* 990d341477 ANDROID: Update the ABI symbol list
* be92a6a1b4 ANDROID: GKI: Remove CONFIG_MEDIA_CEC_RC
* fa9ac43f16 BACKPORT: usb: host: xhci: Avoid XHCI resume delay if SSUSB device is not present
* f27fc6ba23 Merge "Merge tag 'android14-6.1.68_r00' into branch 'android14-6.1'" into android14-6.1
|\
| * 0177cfb2a2 Merge tag 'android14-6.1.68_r00' into branch 'android14-6.1'
* c96cea1a3c ANDROID: Update the ABI symbol list
* c2fbc12180 ANDROID: uid_sys_stats: Drop CONFIG_UID_SYS_STATS_DEBUG logic
* 90bd30bdef ANDROID: Update the ABI symbol list
* 3280560843 ANDROID: Update the ABI symbol list
* 427210e440 UPSTREAM: usb: gadget: uvc: Remove nested locking
* 9267e267be ANDROID: uid_sys_stats: Fully initialize uid_entry_tmp value
* 2d3f0c9d41 ANDROID: Roll back some code to fix system_server registers psi trigger failed.
* bd77c97c76 UPSTREAM: usb: gadget: uvc: Fix use are free during STREAMOFF
* 21c71a7d0e ANDROID: GKI: Add symbol list for Nothing
* aba5a3fe09 ANDROID: Enable CONFIG_LAZY_RCU in x86 gki_defconfig
* 204160394a ANDROID: fuse-bpf: Fix the issue of abnormal lseek system calls
* 947708f1ff ANDROID: ABI: Update symbol list for imx
* 7eedea7abf BACKPORT: PM: sleep: Fix possible deadlocks in core system-wide PM code
* e1a20dd9ff UPSTREAM: async: Introduce async_schedule_dev_nocall()
* e4b0e14f83 UPSTREAM: async: Split async_schedule_node_domain()
* 6b4c816d17 FROMGIT: BACKPORT: mm: update mark_victim tracepoints fields
* d97ea65296 ANDROID: Enable CONFIG_LAZY_RCU in arm64 gki_defconfig
* 90d68cedd1 FROMLIST: rcu: Provide a boot time parameter to control lazy RCU
* a079cc5876 ANDROID: rcu: Add a minimum time for marking boot as completed
* ffe09c06a8 UPSTREAM: rcu: Disable laziness if lazy-tracking says so
* d07488d26e UPSTREAM: rcu: Track laziness during boot and suspend
* 4316bd568b UPSTREAM: net: Use call_rcu_hurry() for dst_release()
* b9427245f0 UPSTREAM: workqueue: Make queue_rcu_work() use call_rcu_hurry()
* 72fdf7f606 UPSTREAM: percpu-refcount: Use call_rcu_hurry() for atomic switch
* ced65a053b UPSTREAM: io_uring: use call_rcu_hurry if signaling an eventfd
* 84c8157d06 UPSTREAM: rcu: Update synchronize_rcu_mult() comment for call_rcu_hurry()
* 3751416eeb UPSTREAM: scsi/scsi_error: Use call_rcu_hurry() instead of call_rcu()
* 52193e9489 UPSTREAM: rcu/rcutorture: Use call_rcu_hurry() where needed
* 83f8ba569f UPSTREAM: rcu/rcuscale: Use call_rcu_hurry() for async reader test
* 9b625f4978 UPSTREAM: rcu/sync: Use call_rcu_hurry() instead of call_rcu
* c570c8fea3 BACKPORT: rcu: Shrinker for lazy rcu
* 4957579439 UPSTREAM: rcu: Refactor code a bit in rcu_nocb_do_flush_bypass()
* 66a832fe38 UPSTREAM: rcu: Make call_rcu() lazy to save power
* 4fb09fb4f7 UPSTREAM: rcu: Fix missing nocb gp wake on rcu_barrier()
* 64c59ad2c3 UPSTREAM: rcu: Fix late wakeup when flush of bypass cblist happens
* 0799ace265 ANDROID: Update the ABI symbol list
* 65db2f8ed3 ANDROID: GKI: add GKI symbol list for Exynosauto SoC
* cfe8cce4e8 UPSTREAM: coresight: tmc: Don't enable TMC when it's not ready.
* 899194d7e9 UPSTREAM: netfilter: nf_tables: bail out on mismatching dynset and set expressions
* e6712ed4f0 ANDROID: ABI: Update oplus symbol list
* 24bb8fc82e ANDROID: vendor_hooks: add hooks in driver/android/binder.c
* 55930b39ca ANDROID: GKI: Update honda symbol list for xt_LOG
* 3160b69e20 ANDROID: GKI: Update honda symbol list for ebt filter
* 4dc7f98815 ANDROID: GKI: Update honda symbol list for ebtables
* 39a0823340 ANDROID: GKI: Update honda symbol list for net scheduler
* dd0098bdb4 ANDROID: GKI: Update honda symbol list for led-trigger
* 66a20ed4b8 ANDROID: GKI: Add initial symbol list for honda
* 28dbe4d613 ANDROID: GKI: add symbols to ABI
* 97100e867e FROMGIT: usb: dwc: ep0: Update request status in dwc3_ep0_stall_restart
* 36248a15a7 FROMGIT: usb: dwc3: set pm runtime active before resume common
Change-Id: I8d9586a94c3182cd365d1e3b651a7552c7c9949b
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 63eafbb6b3.
Keeps the ABI stable by taking advantage of a hole in the structure!
Bug: 307236803
Change-Id: Ic5f7ebeb3a9b13afdb3bfff7e54c4a93b863dab6
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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Merge 6.1.74 into android14-6.1-lts
Changes in 6.1.74
f2fs: explicitly null-terminate the xattr list
pinctrl: lochnagar: Don't build on MIPS
ALSA: hda - Fix speaker and headset mic pin config for CHUWI CoreBook XPro
mptcp: fix uninit-value in mptcp_incoming_options
wifi: cfg80211: lock wiphy mutex for rfkill poll
wifi: avoid offset calculation on NULL pointer
wifi: mac80211: handle 320 MHz in ieee80211_ht_cap_ie_to_sta_ht_cap
debugfs: fix automount d_fsdata usage
ALSA: hda: intel-nhlt: Ignore vbps when looking for DMIC 32 bps format
nvme-core: fix a memory leak in nvme_ns_info_from_identify()
drm/amd/display: update dcn315 lpddr pstate latency
drm/amdgpu: Fix cat debugfs amdgpu_regs_didt causes kernel null pointer
smb: client, common: fix fortify warnings
blk-mq: don't count completed flush data request as inflight in case of quiesce
nvme-core: check for too small lba shift
hwtracing: hisi_ptt: Handle the interrupt in hardirq context
hwtracing: hisi_ptt: Don't try to attach a task
ASoC: wm8974: Correct boost mixer inputs
arm64: dts: rockchip: fix rk356x pcie msg interrupt name
ASoC: Intel: Skylake: Fix mem leak in few functions
ASoC: nau8822: Fix incorrect type in assignment and cast to restricted __be16
ASoC: Intel: Skylake: mem leak in skl register function
ASoC: cs43130: Fix the position of const qualifier
ASoC: cs43130: Fix incorrect frame delay configuration
ASoC: rt5650: add mutex to avoid the jack detection failure
ASoC: Intel: skl_hda_dsp_generic: Drop HDMI routes when HDMI is not available
nouveau/tu102: flush all pdbs on vmm flush
ASoC: amd: yc: Add DMI entry to support System76 Pangolin 13
ASoC: hdac_hda: Conditionally register dais for HDMI and Analog
net/tg3: fix race condition in tg3_reset_task()
ASoC: da7219: Support low DC impedance headset
ASoC: ops: add correct range check for limiting volume
nvme: introduce helper function to get ctrl state
nvme: prevent potential spectre v1 gadget
arm64: dts: rockchip: Fix PCI node addresses on rk3399-gru
drm/amdgpu: Add NULL checks for function pointers
drm/exynos: fix a potential error pointer dereference
drm/exynos: fix a wrong error checking
hwmon: (corsair-psu) Fix probe when built-in
LoongArch: Preserve syscall nr across execve()
clk: rockchip: rk3568: Add PLL rate for 292.5MHz
clk: rockchip: rk3128: Fix HCLK_OTG gate register
jbd2: correct the printing of write_flags in jbd2_write_superblock()
jbd2: increase the journal IO's priority
drm/crtc: Fix uninit-value bug in drm_mode_setcrtc
neighbour: Don't let neigh_forced_gc() disable preemption for long
platform/x86: intel-vbtn: Fix missing tablet-mode-switch events
jbd2: fix soft lockup in journal_finish_inode_data_buffers()
tracing: Have large events show up as '[LINE TOO BIG]' instead of nothing
tracing: Add size check when printing trace_marker output
stmmac: dwmac-loongson: drop useless check for compatible fallback
MIPS: dts: loongson: drop incorrect dwmac fallback compatible
tracing: Fix uaf issue when open the hist or hist_debug file
ring-buffer: Do not record in NMI if the arch does not support cmpxchg in NMI
Input: psmouse - enable Synaptics InterTouch for ThinkPad L14 G1
reset: hisilicon: hi6220: fix Wvoid-pointer-to-enum-cast warning
Input: atkbd - skip ATKBD_CMD_GETID in translated mode
Input: i8042 - add nomux quirk for Acer P459-G2-M
s390/scm: fix virtual vs physical address confusion
ARC: fix spare error
wifi: iwlwifi: pcie: avoid a NULL pointer dereference
Input: xpad - add Razer Wolverine V2 support
kselftest: alsa: fixed a print formatting warning
HID: nintendo: fix initializer element is not constant error
platform/x86: thinkpad_acpi: fix for incorrect fan reporting on some ThinkPad systems
ASoC: Intel: bytcr_rt5640: Add quirk for the Medion Lifetab S10346
ASoC: Intel: bytcr_rt5640: Add new swapped-speakers quirk
ALSA: hda/realtek: Add quirks for ASUS Zenbook 2022 Models
dm audit: fix Kconfig so DM_AUDIT depends on BLK_DEV_DM
HID: nintendo: Prevent divide-by-zero on code
smb: client: fix potential OOB in smb2_dump_detail()
i2c: rk3x: fix potential spinlock recursion on poll
drm/amd/display: get dprefclk ss info from integration info table
pinctrl: cy8c95x0: Fix typo
pinctrl: cy8c95x0: Fix get_pincfg
ida: Fix crash in ida_free when the bitmap is empty
virtio_blk: fix snprintf truncation compiler warning
net: qrtr: ns: Return 0 if server port is not present
ARM: sun9i: smp: fix return code check of of_property_match_string
drm/crtc: fix uninitialized variable use
ALSA: hda/realtek: Fix mute and mic-mute LEDs for HP Envy X360 13-ay0xxx
ACPI: resource: Add another DMI match for the TongFang GMxXGxx
ASoC: SOF: Intel: hda-codec: Delay the codec device registration
btf, scripts: Exclude Rust CUs with pahole
bpf: Add --skip_encoding_btf_inconsistent_proto, --btf_gen_optimized to pahole flags for v1.25
ksmbd: don't allow O_TRUNC open on read-only share
ksmbd: free ppace array on error in parse_dacl
Revert "md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d"
binder: use EPOLLERR from eventpoll.h
binder: fix use-after-free in shinker's callback
binder: fix trivial typo of binder_free_buf_locked()
binder: fix comment on binder_alloc_new_buf() return value
uio: Fix use-after-free in uio_open
parport: parport_serial: Add Brainboxes BAR details
parport: parport_serial: Add Brainboxes device IDs and geometry
leds: ledtrig-tty: Free allocated ttyname buffer on deactivate
PCI: Add ACS quirk for more Zhaoxin Root Ports
coresight: etm4x: Fix width of CCITMIN field
scripts/decode_stacktrace.sh: optionally use LLVM utilities
Linux 6.1.74
Change-Id: Icd69871d2272d5c26e253cfe54d2a8b637e616b5
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Current scheduler cannot update misfit status immediately when we set uclamp min for some latency-sensitive tasks, it may cause some latency for these tasks so we may need to update misfit status in vendor kernel.
Bug: 318526590
Change-Id: I0f03d2e52588822d1a9ef9a5f24944dff4f4e4a0
Signed-off-by: Chungkai Mei <chungkai@google.com>
[ Upstream commit 4f41d30cd6dc865c3cbc1a852372321eba6d4e4c ]
When appending "[defcmd]" to 'kdb_prompt_str', the size of the string
already in the buffer should be taken into account.
An option could be to switch from strncat() to strlcat() which does the
correct test to avoid such an overflow.
However, this actually looks as dead code, because 'defcmd_in_progress'
can't be true here.
See a more detailed explanation at [1].
[1]: https://lore.kernel.org/all/CAD=FV=WSh7wKN7Yp-3wWiDgX4E3isQ8uh0LCzTmd1v9Cg9j+nQ@mail.gmail.com/
Fixes: 5d5314d679 ("kdb: core for kgdb back end (1 of 2)")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 715d82ba636cb3629a6e18a33bb9dbe53f9936ee upstream.
The following case can cause a crash due to missing attach_btf:
1) load rawtp program
2) load fentry program with rawtp as target_fd
3) create tracing link for fentry program with target_fd = 0
4) repeat 3
In the end we have:
- prog->aux->dst_trampoline == NULL
- tgt_prog == NULL (because we did not provide target_fd to link_create)
- prog->aux->attach_btf == NULL (the program was loaded with attach_prog_fd=X)
- the program was loaded for tgt_prog but we have no way to find out which one
BUG: kernel NULL pointer dereference, address: 0000000000000058
Call Trace:
<TASK>
? __die+0x20/0x70
? page_fault_oops+0x15b/0x430
? fixup_exception+0x22/0x330
? exc_page_fault+0x6f/0x170
? asm_exc_page_fault+0x22/0x30
? bpf_tracing_prog_attach+0x279/0x560
? btf_obj_id+0x5/0x10
bpf_tracing_prog_attach+0x439/0x560
__sys_bpf+0x1cf4/0x2de0
__x64_sys_bpf+0x1c/0x30
do_syscall_64+0x41/0xf0
entry_SYSCALL_64_after_hwframe+0x6e/0x76
Return -EINVAL in this situation.
Fixes: f3a9507554 ("bpf: Allow trampoline re-attach for tracing and lsm programs")
Cc: stable@vger.kernel.org
Signed-off-by: Jiri Olsa <olsajiri@gmail.com>
Acked-by: Jiri Olsa <olsajiri@gmail.com>
Acked-by: Song Liu <song@kernel.org>
Signed-off-by: Dmitrii Dolgov <9erthalion6@gmail.com>
Link: https://lore.kernel.org/r/20240103190559.14750-4-9erthalion6@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 71fee48fb772ac4f6cfa63dbebc5629de8b4cc09 upstream.
When offlining and onlining CPUs the overall reported idle and iowait
times as reported by /proc/stat jump backward and forward:
cpu 132 0 176 225249 47 6 6 21 0 0
cpu0 80 0 115 112575 33 3 4 18 0 0
cpu1 52 0 60 112673 13 3 1 2 0 0
cpu 133 0 177 226681 47 6 6 21 0 0
cpu0 80 0 116 113387 33 3 4 18 0 0
cpu 133 0 178 114431 33 6 6 21 0 0 <---- jump backward
cpu0 80 0 116 114247 33 3 4 18 0 0
cpu1 52 0 61 183 0 3 1 2 0 0 <---- idle + iowait start with 0
cpu 133 0 178 228956 47 6 6 21 0 0 <---- jump forward
cpu0 81 0 117 114929 33 3 4 18 0 0
Reason for this is that get_idle_time() in fs/proc/stat.c has different
sources for both values depending on if a CPU is online or offline:
- if a CPU is online the values may be taken from its per cpu
tick_cpu_sched structure
- if a CPU is offline the values are taken from its per cpu cpustat
structure
The problem is that the per cpu tick_cpu_sched structure is set to zero on
CPU offline. See tick_cancel_sched_timer() in kernel/time/tick-sched.c.
Therefore when a CPU is brought offline and online afterwards both its idle
and iowait sleeptime will be zero, causing a jump backward in total system
idle and iowait sleeptime. In a similar way if a CPU is then brought
offline again the total idle and iowait sleeptimes will jump forward.
It looks like this behavior was introduced with commit 4b0c0f294f
("tick: Cleanup NOHZ per cpu data on cpu down").
This was only noticed now on s390, since we switched to generic idle time
reporting with commit be76ea614460 ("s390/idle: remove arch_cpu_idle_time()
and corresponding code").
Fix this by preserving the values of idle_sleeptime and iowait_sleeptime
members of the per-cpu tick_sched structure on CPU hotplug.
Fixes: 4b0c0f294f ("tick: Cleanup NOHZ per cpu data on cpu down")
Reported-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20240115163555.1004144-1-hca@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit b07bc2347672cc8c7293c64499f1488278c5ca3d ]
Reproduced with below sequence:
dma_declare_coherent_memory()->dma_release_coherent_memory()
->dma_declare_coherent_memory()->"return -EBUSY" error
It will return -EBUSY from the dma_assign_coherent_memory()
in dma_declare_coherent_memory(), the reason is that dev->dma_mem
pointer has not been set to NULL after it's freed.
Fixes: cf65a0f6f6 ("dma-mapping: move all DMA mapping code to kernel/dma")
Signed-off-by: Joakim Zhang <joakim.zhang@cixtech.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit a833a17aeac73b33f79433d7cee68d5cafd71e4f ]
This patch fixes a bug around the verification of possibly-zero-sized
stack accesses. When the access was done through a var-offset stack
pointer, check_stack_access_within_bounds was incorrectly computing the
maximum-offset of a zero-sized read to be the same as the register's min
offset. Instead, we have to take in account the register's maximum
possible value. The patch also simplifies how the max offset is checked;
the check is now simpler than for min offset.
The bug was allowing accesses to erroneously pass the
check_stack_access_within_bounds() checks, only to later crash in
check_stack_range_initialized() when all the possibly-affected stack
slots are iterated (this time with a correct max offset).
check_stack_range_initialized() is relying on
check_stack_access_within_bounds() for its accesses to the
stack-tracking vector to be within bounds; in the case of zero-sized
accesses, we were essentially only verifying that the lowest possible
slot was within bounds. We would crash when the max-offset of the stack
pointer was >= 0 (which shouldn't pass verification, and hopefully is
not something anyone's code attempts to do in practice).
Thanks Hao for reporting!
Fixes: 01f810ace9 ("bpf: Allow variable-offset stack access")
Reported-by: Hao Sun <sunhao.th@gmail.com>
Signed-off-by: Andrei Matei <andreimatei1@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20231207041150.229139-2-andreimatei1@gmail.com
Closes: https://lore.kernel.org/bpf/CACkBjsZGEUaRCHsmaX=h-efVogsRfK1FPxmkgb0Os_frnHiNdw@mail.gmail.com/
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit ab125ed3ec1c10ccc36bc98c7a4256ad114a3dae ]
When register is spilled onto a stack as a 1/2/4-byte register, we set
slot_type[BPF_REG_SIZE - 1] (plus potentially few more below it,
depending on actual spill size). So to check if some stack slot has
spilled register we need to consult slot_type[7], not slot_type[0].
To avoid the need to remember and double-check this in the future, just
use is_spilled_reg() helper.
Fixes: 27113c59b6 ("bpf: Check the other end of slot_type for STACK_SPILL")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20231205184248.1502704-4-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 876673364161da50eed6b472d746ef88242b2368 ]
When updating or deleting an inner map in map array or map htab, the map
may still be accessed by non-sleepable program or sleepable program.
However bpf_map_fd_put_ptr() decreases the ref-counter of the inner map
directly through bpf_map_put(), if the ref-counter is the last one
(which is true for most cases), the inner map will be freed by
ops->map_free() in a kworker. But for now, most .map_free() callbacks
don't use synchronize_rcu() or its variants to wait for the elapse of a
RCU grace period, so after the invocation of ops->map_free completes,
the bpf program which is accessing the inner map may incur
use-after-free problem.
Fix the free of inner map by invoking bpf_map_free_deferred() after both
one RCU grace period and one tasks trace RCU grace period if the inner
map has been removed from the outer map before. The deferment is
accomplished by using call_rcu() or call_rcu_tasks_trace() when
releasing the last ref-counter of bpf map. The newly-added rcu_head
field in bpf_map shares the same storage space with work field to
reduce the size of bpf_map.
Fixes: bba1dc0b55 ("bpf: Remove redundant synchronize_rcu.")
Fixes: 638e4b825d ("bpf: Allows per-cpu maps and map-in-map in sleepable programs")
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20231204140425.1480317-5-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 20c20bd11a0702ce4dc9300c3da58acf551d9725 ]
map is the pointer of outer map, and need_defer needs some explanation.
need_defer tells the implementation to defer the reference release of
the passed element and ensure that the element is still alive before
the bpf program, which may manipulate it, exits.
The following three cases will invoke map_fd_put_ptr() and different
need_defer values will be passed to these callers:
1) release the reference of the old element in the map during map update
or map deletion. The release must be deferred, otherwise the bpf
program may incur use-after-free problem, so need_defer needs to be
true.
2) release the reference of the to-be-added element in the error path of
map update. The to-be-added element is not visible to any bpf
program, so it is OK to pass false for need_defer parameter.
3) release the references of all elements in the map during map release.
Any bpf program which has access to the map must have been exited and
released, so need_defer=false will be OK.
These two parameters will be used by the following patches to fix the
potential use-after-free problem for map-in-map.
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20231204140425.1480317-3-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Stable-dep-of: 876673364161 ("bpf: Defer the free of inner map when necessary")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit e6c86c513f440bec5f1046539c7e3c6c653842da ]
As an accident of implementation, an RCU Tasks Trace grace period also
acts as an RCU grace period. However, this could change at any time.
This commit therefore creates an rcu_trace_implies_rcu_gp() that currently
returns true to codify this accident. Code relying on this accident
must call this function to verify that this accident is still happening.
Reported-by: Hou Tao <houtao@huaweicloud.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Martin KaFai Lau <martin.lau@linux.dev>
Link: https://lore.kernel.org/r/20221014113946.965131-2-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Stable-dep-of: 876673364161 ("bpf: Defer the free of inner map when necessary")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 0acd03a5bd188b0c501d285d938439618bd855c4 ]
Given verifier checks actual value, r0 has to be precise, so we need to
propagate precision properly. r0 also has to be marked as read,
otherwise subsequent state comparisons will ignore such register as
unimportant and precision won't really help here.
Fixes: 69c087ba62 ("bpf: Add bpf_for_each_map_elem() helper")
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Acked-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20231202175705.885270-4-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit b8e3a87a627b575896e448021e5c2f8a3bc19931 ]
Currently get_perf_callchain only supports user stack walking for
the current task. Passing the correct *crosstask* param will return
0 frames if the task passed to __bpf_get_stack isn't the current
one instead of a single incorrect frame/address. This change
passes the correct *crosstask* param but also does a preemptive
check in __bpf_get_stack if the task is current and returns
-EOPNOTSUPP if it is not.
This issue was found using bpf_get_task_stack inside a BPF
iterator ("iter/task"), which iterates over all tasks.
bpf_get_task_stack works fine for fetching kernel stacks
but because get_perf_callchain relies on the caller to know
if the requested *task* is the current one (via *crosstask*)
it was failing in a confusing way.
It might be possible to get user stacks for all tasks utilizing
something like access_process_vm but that requires the bpf
program calling bpf_get_task_stack to be sleepable and would
therefore be a breaking change.
Fixes: fa28dcb82a ("bpf: Introduce helper bpf_get_task_stack()")
Signed-off-by: Jordan Rome <jordalgo@meta.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20231108112334.3433136-1-jordalgo@meta.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 9b75dbeb36fcd9fc7ed51d370310d0518a387769 ]
When looking up an element in LPM trie, the condition 'matchlen ==
trie->max_prefixlen' will never return true, if key->prefixlen is larger
than trie->max_prefixlen. Consequently all elements in the LPM trie will
be visited and no element is returned in the end.
To resolve this, check key->prefixlen first before walking the LPM trie.
Fixes: b95a5c4db0 ("bpf: add a longest prefix match trie map implementation")
Signed-off-by: Florian Lehner <dev@der-flo.net>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20231105085801.3742-1-dev@der-flo.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
In presence of a lot of small weight tasks like sched_idle tasks, normal
or high weight tasks can see their ideal runtime (sched_slice) to increase
to hundreds ms whereas it normally stays below sysctl_sched_latency.
2 normal tasks running on a CPU will have a max sched_slice of 12ms
(half of the sched_period). This means that they will make progress
every sysctl_sched_latency period.
If we now add 1000 idle tasks on the CPU, the sched_period becomes
3006 ms and the ideal runtime of the normal tasks becomes 609 ms.
It will even become 1500ms if the idle tasks belongs to an idle cgroup.
This means that the scheduler will look for picking another waiting task
after 609ms running time (1500ms respectively). The idle tasks change
significantly the way the 2 normal tasks interleave their running time
slot whereas they should have a small impact.
Such long sched_slice can delay significantly the release of resources
as the tasks can wait hundreds of ms before the next running slot just
because of idle tasks queued on the rq.
Cap the ideal_runtime to sysctl_sched_latency to make sure that tasks will
regularly make progress and will not be significantly impacted by
idle/background tasks queued on the rq.
Bug: 315185352
Bug: 269111781
Change-Id: I27f956ee275d17ef708d8d27dc082c66ed5a5275
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Link: https://lore.kernel.org/r/20230113133613.257342-1-vincent.guittot@linaro.org
(cherry picked from commit 79ba1e607d68178db7d3fe4f6a4aa38f06805e7b)
Signed-off-by: Qais Yousef <qyousef@google.com>
(cherry picked from commit e32aeb03b9c6b1b625ff0248b6d5670aa74e783b)
Signed-off-by: Qais Yousef <qyousef@google.com>
the commit 2c1e89916b
revert part of
https://android-review.googlesource.com/c/kernel/common/+/2199758
causing system_server registers psi trigger failed due to lack of
CAP_SYS_RESOURCE capability.
Bug: 243781242
Bug: 244148051
Signed-off-by: Hailong.Liu <liuhailong@oppo.com>
Change-Id: Ie22ea6f7a7dc848fa8307e6f4e8223779367df31
[ Upstream commit 712292308af2265cd9b126aedfa987f10f452a33 ]
As the ring buffer recording requires cmpxchg() to work, if the
architecture does not support cmpxchg in NMI, then do not do any recording
within an NMI.
Link: https://lore.kernel.org/linux-trace-kernel/20231213175403.6fc18540@gandalf.local.home
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 1cc111b9cddc71ce161cd388f11f0e9048edffdb ]
KASAN report following issue. The root cause is when opening 'hist'
file of an instance and accessing 'trace_event_file' in hist_show(),
but 'trace_event_file' has been freed due to the instance being removed.
'hist_debug' file has the same problem. To fix it, call
tracing_{open,release}_file_tr() in file_operations callback to have
the ref count and avoid 'trace_event_file' being freed.
BUG: KASAN: slab-use-after-free in hist_show+0x11e0/0x1278
Read of size 8 at addr ffff242541e336b8 by task head/190
CPU: 4 PID: 190 Comm: head Not tainted 6.7.0-rc5-g26aff849438c #133
Hardware name: linux,dummy-virt (DT)
Call trace:
dump_backtrace+0x98/0xf8
show_stack+0x1c/0x30
dump_stack_lvl+0x44/0x58
print_report+0xf0/0x5a0
kasan_report+0x80/0xc0
__asan_report_load8_noabort+0x1c/0x28
hist_show+0x11e0/0x1278
seq_read_iter+0x344/0xd78
seq_read+0x128/0x1c0
vfs_read+0x198/0x6c8
ksys_read+0xf4/0x1e0
__arm64_sys_read+0x70/0xa8
invoke_syscall+0x70/0x260
el0_svc_common.constprop.0+0xb0/0x280
do_el0_svc+0x44/0x60
el0_svc+0x34/0x68
el0t_64_sync_handler+0xb8/0xc0
el0t_64_sync+0x168/0x170
Allocated by task 188:
kasan_save_stack+0x28/0x50
kasan_set_track+0x28/0x38
kasan_save_alloc_info+0x20/0x30
__kasan_slab_alloc+0x6c/0x80
kmem_cache_alloc+0x15c/0x4a8
trace_create_new_event+0x84/0x348
__trace_add_new_event+0x18/0x88
event_trace_add_tracer+0xc4/0x1a0
trace_array_create_dir+0x6c/0x100
trace_array_create+0x2e8/0x568
instance_mkdir+0x48/0x80
tracefs_syscall_mkdir+0x90/0xe8
vfs_mkdir+0x3c4/0x610
do_mkdirat+0x144/0x200
__arm64_sys_mkdirat+0x8c/0xc0
invoke_syscall+0x70/0x260
el0_svc_common.constprop.0+0xb0/0x280
do_el0_svc+0x44/0x60
el0_svc+0x34/0x68
el0t_64_sync_handler+0xb8/0xc0
el0t_64_sync+0x168/0x170
Freed by task 191:
kasan_save_stack+0x28/0x50
kasan_set_track+0x28/0x38
kasan_save_free_info+0x34/0x58
__kasan_slab_free+0xe4/0x158
kmem_cache_free+0x19c/0x508
event_file_put+0xa0/0x120
remove_event_file_dir+0x180/0x320
event_trace_del_tracer+0xb0/0x180
__remove_instance+0x224/0x508
instance_rmdir+0x44/0x78
tracefs_syscall_rmdir+0xbc/0x140
vfs_rmdir+0x1cc/0x4c8
do_rmdir+0x220/0x2b8
__arm64_sys_unlinkat+0xc0/0x100
invoke_syscall+0x70/0x260
el0_svc_common.constprop.0+0xb0/0x280
do_el0_svc+0x44/0x60
el0_svc+0x34/0x68
el0t_64_sync_handler+0xb8/0xc0
el0t_64_sync+0x168/0x170
Link: https://lore.kernel.org/linux-trace-kernel/20231214012153.676155-1-zhengyejian1@huawei.com
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 60be76eeabb3d83858cc6577fc65c7d0f36ffd42 ]
If for some reason the trace_marker write does not have a nul byte for the
string, it will overflow the print:
trace_seq_printf(s, ": %s", field->buf);
The field->buf could be missing the nul byte. To prevent overflow, add the
max size that the buf can be by using the event size and the field
location.
int max = iter->ent_size - offsetof(struct print_entry, buf);
trace_seq_printf(s, ": %*.s", max, field->buf);
Link: https://lore.kernel.org/linux-trace-kernel/20231212084444.4619b8ce@gandalf.local.home
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
In preparation for subsequent changes, introduce a specialized variant
of async_schedule_dev() that will not invoke the argument function
synchronously when it cannot be scheduled for asynchronous execution.
The new function, async_schedule_dev_nocall(), will be used for fixing
possible deadlocks in the system-wide power management core code.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com> for the series.
Tested-by: Youngmin Nam <youngmin.nam@samsung.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Bug: 319759660
Change-Id: I497f1a9655d80c2d9710c3c814f6a99a31bcf019
(cherry picked from commit 7d4b5d7a37bdd63a5a3371b988744b060d5bb86f)
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>
In preparation for subsequent changes, split async_schedule_node_domain()
in two pieces so as to allow the bottom part of it to be called from a
somewhat different code path.
No functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Tested-by: Youngmin Nam <youngmin.nam@samsung.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Bug: 319759660
Change-Id: I6405b388d9a0286208b48f7a321b0042d85abb4b
(cherry picked from commit 6aa09a5bccd8e224d917afdb4c278fc66aacde4d)
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>
To allow more flexible arrangements while still provide a single kernel
for distros, provide a boot time parameter to enable/disable lazy RCU.
Specify:
rcutree.enable_rcu_lazy=[y|1|n|0]
Which also requires
rcu_nocbs=all
at boot time to enable/disable lazy RCU.
To disable it by default at build time when CONFIG_RCU_LAZY=y, the new
CONFIG_RCU_LAZY_DEFAULT_OFF can be used.
Bug: 258241771
Signed-off-by: Qais Yousef (Google) <qyousef@layalina.io>
Tested-by: Andrea Righi <andrea.righi@canonical.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/lkml/20231203011252.233748-1-qyousef@layalina.io/
[Fix trivial conflicts rejecting newer code that doesn't exist on 6.1]
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: Ib5585ae717a2ba7749f2802101b785c4e5de8a90
On many systems, a great deal of boot (in userspace) happens after the
kernel thinks the boot has completed. It is difficult to determine if
the system has really booted from the kernel side. Some features like
lazy-RCU can risk slowing down boot time if, say, a callback has been
added that the boot synchronously depends on. Further expedited callbacks
can get unexpedited way earlier than it should be, thus slowing down
boot (as shown in the data below).
For these reasons, this commit adds a config option
'CONFIG_RCU_BOOT_END_DELAY' and a boot parameter rcupdate.boot_end_delay.
Userspace can also make RCU's view of the system as booted, by writing the
time in milliseconds to: /sys/module/rcupdate/parameters/rcu_boot_end_delay
Or even just writing a value of 0 to this sysfs node.
However, under no circumstance will the boot be allowed to end earlier
than just before init is launched.
The default value of CONFIG_RCU_BOOT_END_DELAY is chosen as 15s. This
suites ChromeOS and also a PREEMPT_RT system below very well, which need
no config or parameter changes, and just a simple application of this patch. A
system designer can also choose a specific value here to keep RCU from marking
boot completion. As noted earlier, RCU's perspective of the system as booted
will not be marker until at least rcu_boot_end_delay milliseconds have passed
or an update is made via writing a small value (or 0) in milliseconds to:
/sys/module/rcupdate/parameters/rcu_boot_end_delay.
One side-effect of this patch is, there is a risk that a real-time workload
launched just after the kernel boots will suffer interruptions due to expedited
RCU, which previous ended just before init was launched. However, to mitigate
such an issue (however unlikely), the user should either tune
CONFIG_RCU_BOOT_END_DELAY to a smaller value than 15 seconds or write a value
of 0 to /sys/module/rcupdate/parameters/rcu_boot_end_delay, once userspace
boots, and before launching the real-time workload.
Qiuxu also noted impressive boot-time improvements with earlier version
of patch. An excerpt from the data he shared:
1) Testing environment:
OS : CentOS Stream 8 (non-RT OS)
Kernel : v6.2
Machine : Intel Cascade Lake server (2 sockets, each with 44 logical threads)
Qemu args : -cpu host -enable-kvm, -smp 88,threads=2,sockets=2, …
2) OS boot time definition:
The time from the start of the kernel boot to the shell command line
prompt is shown from the console. [ Different people may have
different OS boot time definitions. ]
3) Measurement method (very rough method):
A timer in the kernel periodically prints the boot time every 100ms.
As soon as the shell command line prompt is shown from the console,
we record the boot time printed by the timer, then the printed boot
time is the OS boot time.
4) Measured OS boot time (in seconds)
a) Measured 10 times w/o this patch:
8.7s, 8.4s, 8.6s, 8.2s, 9.0s, 8.7s, 8.8s, 9.3s, 8.8s, 8.3s
The average OS boot time was: ~8.7s
b) Measure 10 times w/ this patch:
8.5s, 8.2s, 7.6s, 8.2s, 8.7s, 8.2s, 7.8s, 8.2s, 9.3s, 8.4s
The average OS boot time was: ~8.3s.
(CHROMIUM tag rationale: Submitted upstream but got lots of pushback as
it may harm a PREEMPT_RT system -- the concern is VERY theoretical and
this improves things for ChromeOS. Plus we are not a PREEMPT_RT system.
So I am strongly suggesting this mostly simple change for ChromeOS.)
Bug: 258241771
Tested-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/4350228
Commit-Queue: Joel Fernandes <joelaf@google.com>
Commit-Queue: Vineeth Pillai <vineethrp@google.com>
Tested-by: Vineeth Pillai <vineethrp@google.com>
Tested-by: Joel Fernandes <joelaf@google.com>
Reviewed-by: Vineeth Pillai <vineethrp@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/4909180
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: Ibd262189d7f92dbcc57f1508efe90fcfba95a6cc
During suspend, we see failures to suspend 1 in 300-500 suspends.
Looking closer, it appears that asynchronous RCU callbacks are being
queued as lazy even though synchronous callbacks are expedited. These
delays appear to not be very welcome by the suspend/resume code as
evidenced by these occasional suspend failures.
This commit modifies call_rcu() to check if rcu_async_should_hurry(),
which will return true if we are in suspend or in-kernel boot.
[ paulmck: Alphabetize local variables. ]
Ignoring the lazy hint makes the 3000 suspend/resume cycles pass
reliably on a 12th gen 12-core Intel CPU, and there is some evidence
that it also slightly speeds up boot performance.
Fixes: 3cb278e73be5 ("rcu: Make call_rcu() lazy to save power")
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
(cherry picked from commit cf7066b97e27b2319af1ae2ef6889c4a1704312d)
Bug: 258241771
Signed-off-by: Joel Fernandes <joelaf@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/4909179
Reviewed-by: Vineeth Pillai <vineethrp@google.com>
Reviewed-by: Ross Zwisler <zwisler@google.com>
Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: I4cfe6f43de8bae9a6c034831c79d9773199d6d29
Boot and suspend/resume should not be slowed down in kernels built with
CONFIG_RCU_LAZY=y. In particular, suspend can sometimes fail in such
kernels.
This commit therefore adds rcu_async_hurry(), rcu_async_relax(), and
rcu_async_should_hurry() functions that track whether or not either
a boot or a suspend/resume operation is in progress. This will
enable a later commit to refrain from laziness during those times.
Export rcu_async_should_hurry(), rcu_async_hurry(), and rcu_async_relax()
for later use by rcutorture.
[ paulmck: Apply feedback from Steve Rostedt. ]
Fixes: 3cb278e73be5 ("rcu: Make call_rcu() lazy to save power")
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
(cherry picked from commit 6efdda8bec2900ce5166ee4ff4b1844b47b529cd)
Bug: 258241771
Signed-off-by: Joel Fernandes <joelaf@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/4909178
Reviewed-by: Ross Zwisler <zwisler@google.com>
Reviewed-by: Sean Paul <sean@poorly.run>
Reviewed-by: Vineeth Pillai <vineethrp@google.com>
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: Ieb2f2d484a33cfbd71f71c8e3dbcfc05cd7efe8c
Earlier commits in this series allow battery-powered systems to build
their kernels with the default-disabled CONFIG_RCU_LAZY=y Kconfig option.
This Kconfig option causes call_rcu() to delay its callbacks in order
to batch them. This means that a given RCU grace period covers more
callbacks, thus reducing the number of grace periods, in turn reducing
the amount of energy consumed, which increases battery lifetime which
can be a very good thing. This is not a subtle effect: In some important
use cases, the battery lifetime is increased by more than 10%.
This CONFIG_RCU_LAZY=y option is available only for CPUs that offload
callbacks, for example, CPUs mentioned in the rcu_nocbs kernel boot
parameter passed to kernels built with CONFIG_RCU_NOCB_CPU=y.
Delaying callbacks is normally not a problem because most callbacks do
nothing but free memory. If the system is short on memory, a shrinker
will kick all currently queued lazy callbacks out of their laziness,
thus freeing their memory in short order. Similarly, the rcu_barrier()
function, which blocks until all currently queued callbacks are invoked,
will also kick lazy callbacks, thus enabling rcu_barrier() to complete
in a timely manner.
However, there are some cases where laziness is not a good option.
For example, synchronize_rcu() invokes call_rcu(), and blocks until
the newly queued callback is invoked. It would not be a good for
synchronize_rcu() to block for ten seconds, even on an idle system.
Therefore, synchronize_rcu() invokes call_rcu_hurry() instead of
call_rcu(). The arrival of a non-lazy call_rcu_hurry() callback on a
given CPU kicks any lazy callbacks that might be already queued on that
CPU. After all, if there is going to be a grace period, all callbacks
might as well get full benefit from it.
Yes, this could be done the other way around by creating a
call_rcu_lazy(), but earlier experience with this approach and
feedback at the 2022 Linux Plumbers Conference shifted the approach
to call_rcu() being lazy with call_rcu_hurry() for the few places
where laziness is inappropriate.
And another call_rcu() instance that cannot be lazy is the one
in queue_rcu_work(), given that callers to queue_rcu_work() are
not necessarily OK with long delays.
Therefore, make queue_rcu_work() use call_rcu_hurry() in order to revert
to the old behavior.
[ paulmck: Apply s/call_rcu_flush/call_rcu_hurry/ feedback from Tejun Heo. ]
Signed-off-by: Uladzislau Rezki <urezki@gmail.com>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
(cherry picked from commit a7e30c0e9a5f95b7f74e6272d9c75fd65c897721)
Bug: 258241771
Signed-off-by: Joel Fernandes <joelaf@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/4909040
Reviewed-by: Sean Paul <sean@poorly.run>
Reviewed-by: Ross Zwisler <zwisler@google.com>
Reviewed-by: Vineeth Pillai <vineethrp@google.com>
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: I1dd4cedd1fb02626fa47f88a7fbaa7cacfa95d11
call_rcu() changes to save power will change the behavior of rcutorture
tests. Use the call_rcu_hurry() API instead which reverts to the old
behavior.
[ paulmck: Apply s/call_rcu_flush/call_rcu_hurry/ feedback from Tejun Heo. ]
Reported-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
(cherry picked from commit 405d8e91f0a99777d61f6b0ddc3484d8ea7ca393)
Bug: 258241771
Signed-off-by: Joel Fernandes <joelaf@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/4909035
Reviewed-by: Sean Paul <sean@poorly.run>
Reviewed-by: Vineeth Pillai <vineethrp@google.com>
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: I8008990dfe7e64f511aada006e736b15cdd0d61e
rcuscale uses call_rcu() to queue async readers. With recent changes to
save power, the test will have fewer async readers in flight. Use the
call_rcu_hurry() API instead to revert to the old behavior.
[ paulmck: Apply s/call_rcu_flush/call_rcu_hurry/ feedback from Tejun Heo. ]
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
(cherry picked from commit 723df859d8bba948ff2eb08eba32ab433acf7c9c)
Bug: 258241771
Signed-off-by: Joel Fernandes <joelaf@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/4909034
Reviewed-by: Sean Paul <sean@poorly.run>
Reviewed-by: Vineeth Pillai <vineethrp@google.com>
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: I680dacb44e81e210e2e4455f28e50b9b516222a8