By default uclamp RT tasks will use the max frequency, which is not the
desired default behavior on mobile devices.
Re-use the SUGOV_RT_MAX_FREQ sched_feat to control the default behavior.
When SUGOV_RT_MAX_FREQ is NOT selected, the uclamp_min value of the RT
tasks will be 0.
Bug: 120440300
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Change-Id: I3d36f1ebed6ef35a6299af32bbf4462d0353e783
Git-commit: f89ff1404286486643a1ae80f1f22946cdb8d0ee
Git-repo: https://android.googlesource.com/kernel/common/
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
Schedutil always requests max frequency whenever a RT task is running.
Now that we have a better estimate of the utilization of RT runqueues,
it is possible to make a less conservative decision and scale frequency
according to the needs of the RT tasks.
To do so, protect the RT-go-to-max code with a new sched_feature.
The sched_feature is disabled by default, hence favoring energy savings
as required in mobile environments.
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
Change-Id: Ic9f01c8703d4f843addaa0d684012a422fe9f3b8
Git-commit: c74d264106b150fad8949a985514d127c1e117c5
Git-repo: https://android.googlesource.com/kernel/common/
[satyap@codeaurora.org: fix trivial merge conflicts]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
The current implementation of sched_preempt_disable trace point
fails to detect the preemption disable time inside spin_lock_bh()
and spin_unlock_bh(). This is because __local_bh_disable_ip() calls
directly __preempt_count_add() which skips the preemption disable
tracking. Instead of relying on the updates to preempt count, it
is better to write the preemption disable tracking directly to
preemptsoff tracer. This is similar to how irq disable tracking
is done.
The current code handles the false positives coming from __schedule()
by directly resetting the time stamp. This requires an interface
from the scheduler to preemptsoff tracer. To avoid this additional
interface, the current patch detects the same condition by comparing
the task pid and context switch count. If they are not matching
at the time of preemption disable to enable, don't track the preemption
disable time as it involved a context switch.
Due to this rework. the sched_preempt_disable trace point location is
changed to
/sys/kernel/debug/tracing/events/preemptirq/sched_preempt_disable/enable
Change-Id: I7f58d316b7c54bc7a54102bfeb678404bda010d4
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
[satyap@codeaurora.org: port to 5.4 and resolve trivial merge conflicts]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
Preempt/irqsoff tracer notes down preemption/irqs disabled timestamp
and compares it with enable timestamp to report prolonged disabling
callers at latency tracking. But they don't reset the time stamp at
re-enable time. The time stamp could be stale and possible to report
same latency multiple times or false positive. This could be possible
when callsites uses notrace API (__preempt_) for preemption disable
and tracable API (preempt_) for enable (ex: softirq).
Fix it by resetting the preempt/irqsoff disable timestamp at
re-enable time.
Change-Id: I6790227998881922a9339869ce9ee2dab6202567
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
* refs/heads/tmp-9cdc723:
Revert "usb: dwc3: gadget: Fix logical condition"
Revert "FROMLIST: scsi: ufs-qcom: Adjust bus bandwidth voting and unvoting"
Linux 5.4.5
r8169: add missing RX enabling for WoL on RTL8125
net: mscc: ocelot: unregister the PTP clock on deinit
ionic: keep users rss hash across lif reset
xdp: obtain the mem_id mutex before trying to remove an entry.
page_pool: do not release pool until inflight == 0.
net/mlx5e: ethtool, Fix analysis of speed setting
net/mlx5e: Fix translation of link mode into speed
net/mlx5e: Fix freeing flow with kfree() and not kvfree()
net/mlx5e: Fix SFF 8472 eeprom length
act_ct: support asymmetric conntrack
net/mlx5e: Fix TXQ indices to be sequential
net: Fixed updating of ethertype in skb_mpls_push()
hsr: fix a NULL pointer dereference in hsr_dev_xmit()
Fixed updating of ethertype in function skb_mpls_pop
gre: refetch erspan header from skb->data after pskb_may_pull()
cls_flower: Fix the behavior using port ranges with hw-offload
net: sched: allow indirect blocks to bind to clsact in TC
net: core: rename indirect block ingress cb function
tcp: Protect accesses to .ts_recent_stamp with {READ,WRITE}_ONCE()
tcp: tighten acceptance of ACKs not matching a child socket
tcp: fix rejected syncookies due to stale timestamps
net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup
net: ipv6: add net argument to ip6_dst_lookup_flow
net/mlx5e: Query global pause state before setting prio2buffer
tipc: fix ordering of tipc module init and exit routine
tcp: md5: fix potential overestimation of TCP option space
openvswitch: support asymmetric conntrack
net/tls: Fix return values to avoid ENOTSUPP
net: thunderx: start phy before starting autonegotiation
net_sched: validate TCA_KIND attribute in tc_chain_tmplt_add()
net: sched: fix dump qlen for sch_mq/sch_mqprio with NOLOCK subqueues
net: ethernet: ti: cpsw: fix extra rx interrupt
net: dsa: fix flow dissection on Tx path
net: bridge: deny dev_set_mac_address() when unregistering
mqprio: Fix out-of-bounds access in mqprio_dump
inet: protect against too small mtu values.
ANDROID: add initial ABI whitelist for android-5.4
ANDROID: abi update for 5.4.4
ANDROID: mm: Throttle rss_stat tracepoint
FROMLIST: vsprintf: Inline call to ptr_to_hashval
UPSTREAM: rss_stat: Add support to detect RSS updates of external mm
UPSTREAM: mm: emit tracepoint when RSS changes
Linux 5.4.4
EDAC/ghes: Do not warn when incrementing refcount on 0
r8169: fix rtl_hw_jumbo_disable for RTL8168evl
workqueue: Fix missing kfree(rescuer) in destroy_workqueue()
blk-mq: make sure that line break can be printed
ext4: fix leak of quota reservations
ext4: fix a bug in ext4_wait_for_tail_page_commit
splice: only read in as much information as there is pipe buffer space
rtc: disable uie before setting time and enable after
USB: dummy-hcd: increase max number of devices to 32
powerpc: Define arch_is_kernel_initmem_freed() for lockdep
mm/shmem.c: cast the type of unmap_start to u64
s390/kaslr: store KASLR offset for early dumps
s390/smp,vdso: fix ASCE handling
firmware: qcom: scm: Ensure 'a0' status code is treated as signed
ext4: work around deleting a file with i_nlink == 0 safely
mm: memcg/slab: wait for !root kmem_cache refcnt killing on root kmem_cache destruction
mfd: rk808: Fix RK818 ID template
mm, memfd: fix COW issue on MAP_PRIVATE and F_SEAL_FUTURE_WRITE mappings
powerpc: Fix vDSO clock_getres()
powerpc: Avoid clang warnings around setjmp and longjmp
omap: pdata-quirks: remove openpandora quirks for mmc3 and wl1251
omap: pdata-quirks: revert pandora specific gpiod additions
iio: ad7949: fix channels mixups
iio: ad7949: kill pointless "readback"-handling code
Revert "scsi: qla2xxx: Fix memory leak when sending I/O fails"
scsi: qla2xxx: Fix a dma_pool_free() call
scsi: qla2xxx: Fix SRB leak on switch command timeout
reiserfs: fix extended attributes on the root directory
ext4: Fix credit estimate for final inode freeing
quota: fix livelock in dquot_writeback_dquots
seccomp: avoid overflow in implicit constant conversion
ext2: check err when partial != NULL
quota: Check that quota is not dirty before release
video/hdmi: Fix AVI bar unpack
powerpc/xive: Skip ioremap() of ESB pages for LSI interrupts
powerpc: Allow flush_icache_range to work across ranges >4GB
powerpc/xive: Prevent page fault issues in the machine crash handler
powerpc: Allow 64bit VDSO __kernel_sync_dicache to work across ranges >4GB
coresight: Serialize enabling/disabling a link device.
stm class: Lose the protocol driver when dropping its reference
ppdev: fix PPGETTIME/PPSETTIME ioctls
RDMA/core: Fix ib_dma_max_seg_size()
ARM: dts: omap3-tao3530: Fix incorrect MMC card detection GPIO polarity
mmc: host: omap_hsmmc: add code for special init of wl1251 to get rid of pandora_wl1251_init_card
pinctrl: samsung: Fix device node refcount leaks in S3C64xx wakeup controller init
pinctrl: samsung: Fix device node refcount leaks in init code
pinctrl: samsung: Fix device node refcount leaks in S3C24xx wakeup controller init
pinctrl: samsung: Fix device node refcount leaks in Exynos wakeup controller init
pinctrl: samsung: Add of_node_put() before return in error path
pinctrl: armada-37xx: Fix irq mask access in armada_37xx_irq_set_type()
pinctrl: rza2: Fix gpio name typos
ACPI: PM: Avoid attaching ACPI PM domain to certain devices
ACPI: EC: Rework flushing of pending work
ACPI: bus: Fix NULL pointer check in acpi_bus_get_private_data()
ACPI: OSL: only free map once in osl.c
ACPI / hotplug / PCI: Allocate resources directly under the non-hotplug bridge
ACPI: LPSS: Add dmi quirk for skipping _DEP check for some device-links
ACPI: LPSS: Add LNXVIDEO -> BYT I2C1 to lpss_device_links
ACPI: LPSS: Add LNXVIDEO -> BYT I2C7 to lpss_device_links
ACPI / utils: Move acpi_dev_get_first_match_dev() under CONFIG_ACPI
ALSA: hda/realtek - Line-out jack doesn't work on a Dell AIO
ALSA: oxfw: fix return value in error path of isochronous resources reservation
ALSA: fireface: fix return value in error path of isochronous resources reservation
cpufreq: powernv: fix stack bloat and hard limit on number of CPUs
PM / devfreq: Lock devfreq in trans_stat_show
intel_th: pci: Add Tiger Lake CPU support
intel_th: pci: Add Ice Lake CPU support
intel_th: Fix a double put_device() in error path
powerpc/perf: Disable trace_imc pmu
drm/panfrost: Open/close the perfcnt BO
perf tests: Fix out of bounds memory access
erofs: zero out when listxattr is called with no xattr
cpuidle: use first valid target residency as poll time
cpuidle: teo: Fix "early hits" handling for disabled idle states
cpuidle: teo: Consider hits and misses metrics of disabled states
cpuidle: teo: Rename local variable in teo_select()
cpuidle: teo: Ignore disabled idle states that are too deep
cpuidle: Do not unset the driver if it is there already
media: cec.h: CEC_OP_REC_FLAG_ values were swapped
media: radio: wl1273: fix interrupt masking on release
media: bdisp: fix memleak on release
media: vimc: sen: remove unused kthread_sen field
media: hantro: Fix picture order count table enable
media: hantro: Fix motion vectors usage condition
media: hantro: Fix s_fmt for dynamic resolution changes
s390/mm: properly clear _PAGE_NOEXEC bit when it is not supported
ar5523: check NULL before memcpy() in ar5523_cmd()
wil6210: check len before memcpy() calls
cgroup: pids: use atomic64_t for pids->limit
blk-mq: avoid sysfs buffer overflow with too many CPU cores
md: improve handling of bio with REQ_PREFLUSH in md_flush_request()
ASoC: fsl_audmix: Add spin lock to protect tdms
ASoC: Jack: Fix NULL pointer dereference in snd_soc_jack_report
ASoC: rt5645: Fixed typo for buddy jack support.
ASoC: rt5645: Fixed buddy jack support.
workqueue: Fix pwq ref leak in rescuer_thread()
workqueue: Fix spurious sanity check failures in destroy_workqueue()
dm zoned: reduce overhead of backing device checks
dm writecache: handle REQ_FUA
hwrng: omap - Fix RNG wait loop timeout
ovl: relax WARN_ON() on rename to self
ovl: fix corner case of non-unique st_dev;st_ino
ovl: fix lookup failure on multi lower squashfs
lib: raid6: fix awk build warnings
rtlwifi: rtl8192de: Fix missing enable interrupt flag
rtlwifi: rtl8192de: Fix missing callback that tests for hw release of buffer
rtlwifi: rtl8192de: Fix missing code to retrieve RX buffer address
btrfs: record all roots for rename exchange on a subvol
Btrfs: send, skip backreference walking for extents with many references
btrfs: Remove btrfs_bio::flags member
btrfs: Avoid getting stuck during cyclic writebacks
Btrfs: fix negative subv_writers counter and data space leak after buffered write
Btrfs: fix metadata space leak on fixup worker failure to set range as delalloc
btrfs: use refcount_inc_not_zero in kill_all_nodes
btrfs: use btrfs_block_group_cache_done in update_block_group
btrfs: check page->mapping when loading free space cache
iwlwifi: pcie: fix support for transmitting SKBs with fraglist
usb: typec: fix use after free in typec_register_port()
phy: renesas: rcar-gen3-usb2: Fix sysfs interface of "role"
usb: dwc3: ep0: Clear started flag on completion
usb: dwc3: gadget: Clear started flag for non-IOC
usb: dwc3: gadget: Fix logical condition
usb: dwc3: pci: add ID for the Intel Comet Lake -H variant
virtio-balloon: fix managed page counts when migrating pages between zones
virt_wifi: fix use-after-free in virt_wifi_newlink()
mtd: rawnand: Change calculating of position page containing BBM
mtd: spear_smi: Fix Write Burst mode
brcmfmac: disable PCIe interrupts before bus reset
EDAC/altera: Use fast register IO for S10 IRQs
tpm: Switch to platform_get_irq_optional()
tpm: add check after commands attribs tab allocation
usb: mon: Fix a deadlock in usbmon between mmap and read
usb: core: urb: fix URB structure initialization function
USB: adutux: fix interface sanity check
usb: roles: fix a potential use after free
USB: serial: io_edgeport: fix epic endpoint lookup
USB: idmouse: fix interface sanity checks
USB: atm: ueagle-atm: add missing endpoint check
iio: adc: ad7124: Enable internal reference
iio: adc: ad7606: fix reading unnecessary data from device
iio: imu: inv_mpu6050: fix temperature reporting using bad unit
iio: humidity: hdc100x: fix IIO_HUMIDITYRELATIVE channel reporting
iio: adis16480: Fix scales factors
iio: imu: st_lsm6dsx: fix ODR check in st_lsm6dsx_write_raw
iio: adis16480: Add debugfs_reg_access entry
ARM: dts: pandora-common: define wl1251 as child node of mmc3
usb: common: usb-conn-gpio: Don't log an error on probe deferral
interconnect: qcom: qcs404: Walk the list safely on node removal
interconnect: qcom: sdm845: Walk the list safely on node removal
xhci: make sure interrupts are restored to correct state
xhci: handle some XHCI_TRUST_TX_LENGTH quirks cases as default behaviour.
xhci: Increase STS_HALT timeout in xhci_suspend()
xhci: fix USB3 device initiated resume race with roothub autosuspend
xhci: Fix memory leak in xhci_add_in_port()
usb: xhci: only set D3hot for pci device
staging: gigaset: add endpoint-type sanity check
staging: gigaset: fix illegal free on probe errors
staging: gigaset: fix general protection fault on probe
staging: vchiq: call unregister_chrdev_region() when driver registration fails
staging: rtl8712: fix interface sanity check
staging: rtl8188eu: fix interface sanity check
staging: exfat: fix multiple definition error of `rename_file'
binder: fix incorrect calculation for num_valid
usb: host: xhci-tegra: Correct phy enable sequence
usb: Allow USB device to be warm reset in suspended state
USB: documentation: flags on usb-storage versus UAS
USB: uas: heed CAPACITY_HEURISTICS
USB: uas: honor flag to avoid CAPACITY16
media: venus: remove invalid compat_ioctl32 handler
ceph: fix compat_ioctl for ceph_dir_operations
compat_ioctl: add compat_ptr_ioctl()
scsi: qla2xxx: Fix memory leak when sending I/O fails
scsi: qla2xxx: Fix double scsi_done for abort path
scsi: qla2xxx: Fix driver unload hang
scsi: qla2xxx: Do command completion on abort timeout
scsi: zfcp: trace channel log even for FCP command responses
scsi: lpfc: Fix bad ndlp ptr in xri aborted handling
Revert "nvme: Add quirk for Kingston NVME SSD running FW E8FK11.T"
nvme: Namepace identification descriptor list is optional
usb: gadget: pch_udc: fix use after free
usb: gadget: configfs: Fix missing spin_lock_init()
BACKPORT: FROMLIST: scsi: ufs: Export query request interfaces
ANDROID: update abi with unbindable_ports sysctl
BACKPORT: FROMLIST: net: introduce ip_local_unbindable_ports sysctl
ANDROID: update abi for 5.4.3 merge
ANDROID: update abi_gki_aarch64.xml for ion, drm changes
ANDROID: drivers: gpu: drm: export drm_mode_convert_umode symbol
ANDROID: ion: flush cache before exporting non-cached buffers
Linux 5.4.3
kselftest: Fix NULL INSTALL_PATH for TARGETS runlist
perf script: Fix invalid LBR/binary mismatch error
EDAC/ghes: Fix locking and memory barrier issues
watchdog: aspeed: Fix clock behaviour for ast2600
drm/mcde: Fix an error handling path in 'mcde_probe()'
md/raid0: Fix an error message in raid0_make_request()
cpufreq: imx-cpufreq-dt: Correct i.MX8MN's default speed grade value
ALSA: hda - Fix pending unsol events at shutdown
KVM: x86: fix out-of-bounds write in KVM_GET_EMULATED_CPUID (CVE-2019-19332)
binder: Handle start==NULL in binder_update_page_range()
binder: Prevent repeated use of ->mmap() via NULL mapping
binder: Fix race between mmap() and binder_alloc_print_pages()
Revert "serial/8250: Add support for NI-Serial PXI/PXIe+485 devices"
vcs: prevent write access to vcsu devices
thermal: Fix deadlock in thermal thermal_zone_device_check
iomap: Fix pipe page leakage during splicing
bdev: Refresh bdev size for disks without partitioning
bdev: Factor out bdev revalidation into a common helper
rfkill: allocate static minor
RDMA/qib: Validate ->show()/store() callbacks before calling them
can: ucan: fix non-atomic allocation in completion handler
spi: Fix NULL pointer when setting SPI_CS_HIGH for GPIO CS
spi: Fix SPI_CS_HIGH setting when using native and GPIO CS
spi: atmel: Fix CS high support
spi: stm32-qspi: Fix kernel oops when unbinding driver
spi: spi-fsl-qspi: Clear TDH bits in FLSHCR register
crypto: user - fix memory leak in crypto_reportstat
crypto: user - fix memory leak in crypto_report
crypto: ecdh - fix big endian bug in ECC library
crypto: ccp - fix uninitialized list head
crypto: geode-aes - switch to skcipher for cbc(aes) fallback
crypto: af_alg - cast ki_complete ternary op to int
crypto: atmel-aes - Fix IV handling when req->nbytes < ivsize
crypto: crypto4xx - fix double-free in crypto4xx_destroy_sdr
KVM: x86: Grab KVM's srcu lock when setting nested state
KVM: x86: Remove a spurious export of a static function
KVM: x86: fix presentation of TSX feature in ARCH_CAPABILITIES
KVM: x86: do not modify masked bits of shared MSRs
KVM: arm/arm64: vgic: Don't rely on the wrong pending table
KVM: nVMX: Always write vmcs02.GUEST_CR3 during nested VM-Enter
KVM: PPC: Book3S HV: XIVE: Set kvm->arch.xive when VPs are allocated
KVM: PPC: Book3S HV: XIVE: Fix potential page leak on error path
KVM: PPC: Book3S HV: XIVE: Free previous EQ page when setting up a new one
arm64: dts: exynos: Revert "Remove unneeded address space mapping for soc node"
arm64: Validate tagged addresses in access_ok() called from kernel threads
drm/i810: Prevent underflow in ioctl
drm: damage_helper: Fix race checking plane->state->fb
drm/msm: fix memleak on release
jbd2: Fix possible overflow in jbd2_log_space_left()
kernfs: fix ino wrap-around detection
nfsd: restore NFSv3 ACL support
nfsd: Ensure CLONE persists data and metadata changes to the target file
can: slcan: Fix use-after-free Read in slcan_open
tty: vt: keyboard: reject invalid keycodes
CIFS: Fix SMB2 oplock break processing
CIFS: Fix NULL-pointer dereference in smb2_push_mandatory_locks
x86/PCI: Avoid AMD FCH XHCI USB PME# from D0 defect
x86/mm/32: Sync only to VMALLOC_END in vmalloc_sync_all()
media: rc: mark input device as pointing stick
Input: Fix memory leak in psxpad_spi_probe
coresight: etm4x: Fix input validation for sysfs.
Input: goodix - add upside-down quirk for Teclast X89 tablet
Input: synaptics-rmi4 - don't increment rmiaddr for SMBus transfers
Input: synaptics-rmi4 - re-enable IRQs in f34v7_do_reflash
Input: synaptics - switch another X1 Carbon 6 to RMI/SMbus
soc: mediatek: cmdq: fixup wrong input order of write api
ALSA: hda: Modify stream stripe mask only when needed
ALSA: hda - Add mute led support for HP ProBook 645 G4
ALSA: pcm: oss: Avoid potential buffer overflows
ALSA: hda/realtek - Fix inverted bass GPIO pin on Acer 8951G
ALSA: hda/realtek - Dell headphone has noise on unmute for ALC236
ALSA: hda/realtek - Enable the headset-mic on a Xiaomi's laptop
ALSA: hda/realtek - Enable internal speaker of ASUS UX431FLC
SUNRPC: Avoid RPC delays when exiting suspend
io_uring: ensure req->submit is copied when req is deferred
io_uring: fix missing kmap() declaration on powerpc
fuse: verify attributes
fuse: verify write return
fuse: verify nlink
fuse: fix leak of fuse_io_priv
io_uring: transform send/recvmsg() -ERESTARTSYS to -EINTR
io_uring: fix dead-hung for non-iter fixed rw
mwifiex: Re-work support for SDIO HW reset
serial: ifx6x60: add missed pm_runtime_disable
serial: 8250_dw: Avoid double error messaging when IRQ absent
serial: stm32: fix clearing interrupt error flags
serial: serial_core: Perform NULL checks for break_ctl ops
serial: pl011: Fix DMA ->flush_buffer()
tty: serial: msm_serial: Fix flow control
tty: serial: fsl_lpuart: use the sg count from dma_map_sg
serial: 8250-mtk: Use platform_get_irq_optional() for optional irq
usb: gadget: u_serial: add missing port entry locking
staging/octeon: Use stubs for MIPS && !CAVIUM_OCTEON_SOC
mailbox: tegra: Fix superfluous IRQ error message
time: Zero the upper 32-bits in __kernel_timespec on 32-bit
lp: fix sparc64 LPSETTIMEOUT ioctl
sparc64: implement ioremap_uc
perf scripts python: exported-sql-viewer.py: Fix use of TRUE with SQLite
arm64: tegra: Fix 'active-low' warning for Jetson Xavier regulator
arm64: tegra: Fix 'active-low' warning for Jetson TX1 regulator
rsi: release skb if rsi_prepare_beacon fails
FROMLIST: scsi: ufs: Fix ufshcd_hold() caused scheduling while atomic
FROMLIST: scsi: ufs: Add dev ref clock gating wait time support
FROMLIST: scsi: ufs-qcom: Adjust bus bandwidth voting and unvoting
FROMLIST: scsi: ufs: Remove the check before call setup clock notify vops
FROMLIST: scsi: ufs: set load before setting voltage in regulators
FROMLIST: scsi: ufs: Flush exception event before suspend
FROMLIST: scsi: ufs: Do not rely on prefetched data
FROMLIST: scsi: ufs: Fix up clock scaling
FROMGIT: scsi: ufs: Do not free irq in suspend
FROMGIT: scsi: ufs: Do not clear the DL layer timers
FROMGIT: scsi: ufs: Release clock if DMA map fails
FROMGIT: scsi: ufs: Use DBD setting in mode sense
FROMGIT: scsi: core: Adjust DBD setting in MODE SENSE for caching mode page per LLD
FROMGIT: scsi: ufs: Complete pending requests in host reset and restore path
FROMGIT: scsi: ufs: Avoid messing up the compl_time_stamp of lrbs
FROMGIT: scsi: ufs: Update VCCQ2 and VCCQ min/max voltage hard codes
FROMGIT: scsi: ufs: Recheck bkops level if bkops is disabled
ANDROID: update abi_gki_aarch64.xml for LTO, CFI, and SCS
ANDROID: gki_defconfig: enable LTO, CFI, and SCS
ANDROID: update abi_gki_aarch64.xml for CONFIG_GNSS
ANDROID: cuttlefish_defconfig: Enable CONFIG_GNSS
ANDROID: gki_defconfig: enable HID configs
UPSTREAM: arm64: Validate tagged addresses in access_ok() called from kernel threads
ANDROID: kbuild: limit LTO inlining
ANDROID: kbuild: merge module sections with LTO
ANDROID: f2fs: fix possible merge of unencrypted with encrypted I/O
ANDROID: gki_defconfig: Enable UCLAMP by default
ANDROID: make sure proc mount options are applied
ANDROID: sound: usb: Add helper APIs to enable audio stream
ANDROID: Update ABI representation
ANDROID: Don't base allmodconfig on gki_defconfig
ANDROID: Disable UNWINDER_ORC for allmodconfig
ANDROID: ASoC: Fix 'allmodconfig' build break
Linux 5.4.2
platform/x86: hp-wmi: Fix ACPI errors caused by passing 0 as input size
platform/x86: hp-wmi: Fix ACPI errors caused by too small buffer
HID: core: check whether Usage Page item is after Usage ID items
crypto: talitos - Fix build error by selecting LIB_DES
Revert "jffs2: Fix possible null-pointer dereferences in jffs2_add_frag_to_fragtree()"
ext4: add more paranoia checking in ext4_expand_extra_isize handling
r8169: fix resume on cable plug-in
r8169: fix jumbo configuration for RTL8168evl
selftests: pmtu: use -oneline for ip route list cache
tipc: fix link name length check
selftests: bpf: correct perror strings
selftests: bpf: test_sockmap: handle file creation failures gracefully
net/tls: use sg_next() to walk sg entries
net/tls: remove the dead inplace_crypto code
selftests/tls: add a test for fragmented messages
net: skmsg: fix TLS 1.3 crash with full sk_msg
net/tls: free the record on encryption error
net/tls: take into account that bpf_exec_tx_verdict() may free the record
openvswitch: remove another BUG_ON()
openvswitch: drop unneeded BUG_ON() in ovs_flow_cmd_build_info()
sctp: cache netns in sctp_ep_common
slip: Fix use-after-free Read in slip_open
sctp: Fix memory leak in sctp_sf_do_5_2_4_dupcook
openvswitch: fix flow command message size
net: sched: fix `tc -s class show` no bstats on class with nolock subqueues
net: psample: fix skb_over_panic
net: macb: add missed tasklet_kill
net: dsa: sja1105: fix sja1105_parse_rgmii_delays()
mdio_bus: don't use managed reset-controller
macvlan: schedule bc_work even if error
gve: Fix the queue page list allocated pages count
x86/fpu: Don't cache access to fpu_fpregs_owner_ctx
thunderbolt: Power cycle the router if NVM authentication fails
mei: me: add comet point V device id
mei: bus: prefix device names on bus with the bus name
USB: serial: ftdi_sio: add device IDs for U-Blox C099-F9P
staging: rtl8723bs: Add 024c:0525 to the list of SDIO device-ids
staging: rtl8723bs: Drop ACPI device ids
staging: rtl8192e: fix potential use after free
staging: wilc1000: fix illegal memory access in wilc_parse_join_bss_param()
usb: dwc2: use a longer core rest timeout in dwc2_core_reset()
driver core: platform: use the correct callback type for bus_find_device
crypto: inside-secure - Fix stability issue with Macchiatobin
net: disallow ancillary data for __sys_{send,recv}msg_file()
net: separate out the msghdr copy from ___sys_{send,recv}msg()
io_uring: async workers should inherit the user creds
ANDROID: Update ABI representation
UPSTREAM: of: property: Add device link support for interrupt-parent, dmas and -gpio(s)
UPSTREAM: of: property: Fix the semantics of of_is_ancestor_of()
UPSTREAM: i2c: of: Populate fwnode in of_i2c_get_board_info()
UPSTREAM: regulator: core: Don't try to remove device links if add failed
UPSTREAM: driver core: Clarify documentation for fwnode_operations.add_links()
ANDROID: Update ABI representation
ANDROID: gki_defconfig: IIO=y
ANDROID: Update ABI representation
ANDROID: ASoC: core - add hostless DAI support
ANDROID: gki_defconfig: =m's applied for virtio configs in arm64
ANDROID: Update ABI representation after 5.4.1 merge
Linux 5.4.1
KVM: PPC: Book3S HV: Flush link stack on guest exit to host kernel
powerpc/book3s64: Fix link stack flush on context switch
staging: comedi: usbduxfast: usbduxfast_ai_cmdtest rounding error
USB: serial: option: add support for Foxconn T77W968 LTE modules
USB: serial: option: add support for DW5821e with eSIM support
USB: serial: mos7840: fix remote wakeup
USB: serial: mos7720: fix remote wakeup
USB: serial: mos7840: add USB ID to support Moxa UPort 2210
appledisplay: fix error handling in the scheduled work
USB: chaoskey: fix error case of a timeout
usb-serial: cp201x: support Mark-10 digital force gauge
usbip: Fix uninitialized symbol 'nents' in stub_recv_cmd_submit()
usbip: tools: fix fd leakage in the function of read_attr_usbip_status
USBIP: add config dependency for SGL_ALLOC
ALSA: hda - Disable audio component for legacy Nvidia HDMI codecs
media: mceusb: fix out of bounds read in MCE receiver buffer
media: imon: invalid dereference in imon_touch_event
media: cxusb: detect cxusb_ctrl_msg error in query
media: b2c2-flexcop-usb: add sanity checking
media: uvcvideo: Fix error path in control parsing failure
futex: Prevent exit livelock
futex: Provide distinct return value when owner is exiting
futex: Add mutex around futex exit
futex: Provide state handling for exec() as well
futex: Sanitize exit state handling
futex: Mark the begin of futex exit explicitly
futex: Set task::futex_state to DEAD right after handling futex exit
futex: Split futex_mm_release() for exit/exec
exit/exec: Seperate mm_release()
futex: Replace PF_EXITPIDONE with a state
futex: Move futex exit handling into futex code
cpufreq: Add NULL checks to show() and store() methods of cpufreq
media: usbvision: Fix races among open, close, and disconnect
media: usbvision: Fix invalid accesses after device disconnect
media: vivid: Fix wrong locking that causes race conditions on streaming stop
media: vivid: Set vid_cap_streaming and vid_out_streaming to true
ALSA: usb-audio: Fix Scarlett 6i6 Gen 2 port data
ALSA: usb-audio: Fix NULL dereference at parsing BADD
futex: Prevent robust futex exit race
x86/entry/32: Fix FIXUP_ESPFIX_STACK with user CR3
x86/pti/32: Calculate the various PTI cpu_entry_area sizes correctly, make the CPU_ENTRY_AREA_PAGES assert precise
selftests/x86/sigreturn/32: Invalidate DS and ES when abusing the kernel
selftests/x86/mov_ss_trap: Fix the SYSENTER test
x86/entry/32: Fix NMI vs ESPFIX
x86/entry/32: Unwind the ESPFIX stack earlier on exception entry
x86/entry/32: Move FIXUP_FRAME after pushing %fs in SAVE_ALL
x86/entry/32: Use %ss segment where required
x86/entry/32: Fix IRET exception
x86/cpu_entry_area: Add guard page for entry stack on 32bit
x86/pti/32: Size initial_page_table correctly
x86/doublefault/32: Fix stack canaries in the double fault handler
x86/xen/32: Simplify ring check in xen_iret_crit_fixup()
x86/xen/32: Make xen_iret_crit_fixup() independent of frame layout
x86/stackframe/32: Repair 32-bit Xen PV
nbd: prevent memory leak
x86/speculation: Fix redundant MDS mitigation message
x86/speculation: Fix incorrect MDS/TAA mitigation status
x86/insn: Fix awk regexp warnings
md/raid10: prevent access of uninitialized resync_pages offset
Revert "dm crypt: use WQ_HIGHPRI for the IO and crypt workqueues"
Revert "Bluetooth: hci_ll: set operational frequency earlier"
ath10k: restore QCA9880-AR1A (v1) detection
ath10k: Fix HOST capability QMI incompatibility
ath10k: Fix a NULL-ptr-deref bug in ath10k_usb_alloc_urb_from_pipe
ath9k_hw: fix uninitialized variable data
Bluetooth: Fix invalid-free in bcsp_close()
ANDROID: gki_defconfig: enable CONFIG_REGULATOR_FIXED_VOLTAGE
FROMLIST: crypto: arm64/sha: fix function types
ANDROID: arm64: kvm: disable CFI
ANDROID: arm64: add __nocfi to __apply_alternatives
ANDROID: arm64: add __pa_function
ANDROID: arm64: add __nocfi to functions that jump to a physical address
ANDROID: arm64: bpf: implement arch_bpf_jit_check_func
ANDROID: bpf: validate bpf_func when BPF_JIT is enabled with CFI
ANDROID: add support for Clang's Control Flow Integrity (CFI)
ANDROID: arm64: allow LTO_CLANG and THINLTO to be selected
FROMLIST: arm64: fix alternatives with LLVM's integrated assembler
FROMLIST: arm64: lse: fix LSE atomics with LLVM's integrated assembler
ANDROID: arm64: disable HAVE_ARCH_PREL32_RELOCATIONS with LTO_CLANG
ANDROID: arm64: vdso: disable LTO
ANDROID: irqchip/gic-v3: rename gic_of_init to work around a ThinLTO+CFI bug
ANDROID: soc/tegra: disable ARCH_TEGRA_210_SOC with LTO
ANDROID: init: ensure initcall ordering with LTO
ANDROID: drivers/misc/lkdtm: disable LTO for rodata.o
ANDROID: efi/libstub: disable LTO
ANDROID: scripts/mod: disable LTO for empty.c
ANDROID: kbuild: fix dynamic ftrace with clang LTO
ANDROID: kbuild: add support for Clang LTO
ANDROID: kbuild: add CONFIG_LD_IS_LLD
FROMGIT: driver core: platform: use the correct callback type for bus_find_device
FROMLIST: arm64: implement Shadow Call Stack
FROMLIST: arm64: disable SCS for hypervisor code
FROMLIST: arm64: vdso: disable Shadow Call Stack
FROMLIST: arm64: efi: restore x18 if it was corrupted
FROMLIST: arm64: preserve x18 when CPU is suspended
FROMLIST: arm64: reserve x18 from general allocation with SCS
FROMLIST: arm64: disable function graph tracing with SCS
FROMLIST: scs: add support for stack usage debugging
FROMLIST: scs: add accounting
FROMLIST: add support for Clang's Shadow Call Stack (SCS)
FROMLIST: arm64: kernel: avoid x18 in __cpu_soft_restart
FROMLIST: arm64: kvm: stop treating register x18 as caller save
FROMLIST: arm64/lib: copy_page: avoid x18 register in assembler code
FROMLIST: arm64: mm: avoid x18 in idmap_kpti_install_ng_mappings
ANDROID: clang: update to 10.0.1
ANDROID: update ABI representation
Conflicts:
Documentation/devicetree/bindings
Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
arch/arm64/Kconfig
drivers/firmware/qcom_scm-64.c
drivers/hwtracing/coresight/coresight.c
drivers/scsi/ufs/ufs.h
drivers/scsi/ufs/ufshcd.c
drivers/scsi/ufs/ufshcd.h
drivers/scsi/ufs/unipro.h
drivers/staging/android/ion/heaps/ion_cma_heap.c
drivers/staging/android/ion/heaps/ion_system_heap.c
drivers/usb/dwc3/ep0.c
drivers/usb/dwc3/gadget.c
include/sound/pcm.h
include/sound/soc.h
kernel/exit.c
kernel/sched/core.c
Change-Id: I66ea973ddcafd352ba999a1dc98e04df33397e3b
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
The find_best_target() looks for the higher capacity CPU when
the task is boosted. However the current code does not consider
the boost while deciding the start_cpu. This may result in
unnecessary traversal of the lower capacity CPU group in
find_best_target().
Change-Id: I8153482e15d2c9ea8971415edb9dbd54e10e11d0
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
The logic for psi_avgs_work to not reschedule itself does not appear
to work properly.
1) psi_avgs_work detects itself as a running task due to accounting for
current states in get_recent_times().
2) Drivers with self-rescheduling deferrable work with a period
less than that of psi_avgs_work will always run when psi_avgs_work runs.
This causes psi_avgs_work to retrigger.
Make psi_avgs_work deferrable to avoid this loop.
Change-Id: I90edc5d3cce87ada803f549f417cd0108ef2017f
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
Add ftrace events to capture per-zone memory stats when a
trigger threshold is hit.
Change-Id: Ic52a27713acd34090c8f99543408b277877015c7
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
Right now, when WALT is enabled, we always end up using utilization
from WALT which is broken as we need to consider uclamp as well.
Fix the issue by taking uclamp into account.
Change-Id: Ie1a06d270a176771fc1c9a2474a27327637fa782
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
When WALT & UCLAMP are enabled, compilation is broken.
Change-Id: Id0b23f1d0fd0131f390c062076bddad5104ddd51
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
Even though best_energy_cpu is idle and which would consume
same amount of energy as prev cpu, due to 6% check with prev cpu,
we end up choosing prev cpu over best_energy_cpu for the tasks.
This leads to increase in runnables. Choose best_energy_cpu when
it is idle and shallowest c-state over prev cpu in such scenarios
to avoid runnables.
Change-Id: Ib9eee263640bcd43bd80f8f777a8312585991bc5
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
If both wakee and waker are in top-app,don't place wakee on waker
cpu, because most of this case waker is not going to sleep,this
will cause waker preempted and lead high runnable time,so let
scheduler to select the best cpu in this case.
Change-Id: If6eb3c0acb202197e9dd90205c581398ac049649
Signed-off-by: Biao Long <blong@codeaurora.org>
This change is for general scheduler improvement.
Change-Id: I7c3a073fa68d715dd3bdbed11e4f83e82046a3c0
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
This change is for general scheduler improvement.
Change-Id: I7a981c0aa4826ae448d4de224966dec7e21dab86
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This reverts commit 1e6b1214f107503 ("FROMLIST: sched/topology:
Make Energy Aware Scheduling depend on schedutil").
Right now, EAS gets disabled when governor set to anything other
than schedutil which affects scheduling decisions. To make sure
we always get better scheduling decions, EAS needs to be supported
irrespective of the governor.
Change-Id: I788faaacd477b3ff93ea9787c18a1235c8c3eb0b
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
[shalagra@codeaurora.org: Fixed merge conflicts in port to 5.x]
Signed-off-by: Shaleen Agrawal <shalagra@codeaurora.org>
This snapshot is taken from msm-4.19 as of commit 2508aa54fb9e
(sched: Improve the scheduler").
Change-Id: I193900db684515f6585371b7c58d5b9c361c2e6b
Signed-off-by: Shaleen Agrawal <shalagra@codeaurora.org>
If this runqueue have iowait task and still force newly
idle load balance, will make iowait task performance
worse. Need to do the average idle time check if
there is iowait task on this runqueue to have upcoming
iowait task have enough cpu resource.
Change-Id: I8e4dd440edbbd14d5170fbcf358bdaf5cc5b26e8
Signed-off-by: Maria Yu <aiquny@codeaurora.org>
Signed-off-by: Biao Long <blong@codeaurora.org>
This change is for general scheduler improvement.
Change-Id: I7e6cc760a6add9ebdab7d67a176559bc640f7790
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
[satyap@codeaurora.org: port to 5.4 and minor update for WALT]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
We often see traces that gold cpus goes to idle even when silver
has big tasks. This is because avg_idle checks does not allow
the gold cpus to enter idle balance. This is NOT okay when
silver CPUs have big tasks.
Change-Id: Ice00d43c70be105b5bc3ad09caa6047aa98d7402
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Runmin Wang <runminw@codeaurora.org>
[satyap@codeaurora.org: port to 5.4 and add WALT checks]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This change is for general scheduler improvement.
Change-Id: I15c01c20691899053e0aa760923ba0db644f2b73
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
[satyap@codeaurora.org: port to 5.4 and resolve trivial merge conflicts]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This change is for general scheduler improvement.
Change-Id: I9216f9316e2bad067c10762de8d67912826b7bc7
Signed-off-by: Maria Yu <aiquny@codeaurora.org>
Co-developed-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
[pkondeti@codeaurora.org: skip_cpu argument is implemented for fbt]
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
[satyap@codeaurora.org: port to 5.4 and fix trivial merge conflicts]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This patch adds a parameter to select_task_rq, sibling_count_hint
allowing the caller, where it has this information, to inform the
sched_class the number of tasks that are being woken up as part of
the same event.
The wake_q mechanism is one case where this information is available.
select_task_rq_fair can then use the information to detect that it
needs to widen the search space for task placement in order to avoid
overloading the last-level cache domain's CPUs.
* * *
The reason I am investigating this change is the following use case
on ARM big.LITTLE (asymmetrical CPU capacity): 1 task per CPU, which
all repeatedly do X amount of work then
pthread_barrier_wait (i.e. sleep until the last task finishes its X
and hits the barrier). On big.LITTLE, the tasks which get a "big" CPU
finish faster, and then those CPUs pull over the tasks that are still
running:
v CPU v ->time->
-------------
0 (big) 11111 /333
-------------
1 (big) 22222 /444|
-------------
2 (LITTLE) 333333/
-------------
3 (LITTLE) 444444/
-------------
Now when task 4 hits the barrier (at |) and wakes the others up,
there are 4 tasks with prev_cpu=<big> and 0 tasks with
prev_cpu=<little>. want_affine therefore means that we'll only look
in CPUs 0 and 1 (sd_llc), so tasks will be unnecessarily coscheduled
on the bigs until the next load balance, something like this:
v CPU v ->time->
------------------------
0 (big) 11111 /333 31313\33333
------------------------
1 (big) 22222 /444|424\4444444
------------------------
2 (LITTLE) 333333/ \222222
------------------------
3 (LITTLE) 444444/ \1111
------------------------
^^^
underutilization
So, I'm trying to get want_affine = 0 for these tasks.
I don't _think_ any incarnation of the wakee_flips mechanism can help
us here because which task is waker and which tasks are wakees
generally changes with each iteration.
However pthread_barrier_wait (or more accurately FUTEX_WAKE) has the
nice property that we know exactly how many tasks are being woken, so
we can cheat.
It might be a disadvantage that we "widen" _every_ task that's woken in
an event, while select_idle_sibling would work fine for the first
sd_llc_size - 1 tasks.
IIUC, if wake_affine() behaves correctly this trick wouldn't be
necessary on SMP systems, so it might be best guarded by the presence
of SD_ASYM_CPUCAPACITY?
* * *
Final note..
In order to observe "perfect" behaviour for this use case, I also had
to disable the TTWU_QUEUE sched feature. Suppose during the wakeup
above we are working through the work queue and have placed tasks 3
and 2, and are about to place task 1:
v CPU v ->time->
--------------
0 (big) 11111 /333 3
--------------
1 (big) 22222 /444|4
--------------
2 (LITTLE) 333333/ 2
--------------
3 (LITTLE) 444444/ <- Task 1 should go here
--------------
If TTWU_QUEUE is enabled, we will not yet have enqueued task
2 (having instead sent a reschedule IPI) or attached its load to CPU
2. So we are likely to also place task 1 on cpu 2. Disabling
TTWU_QUEUE means that we enqueue task 2 before placing task 1,
solving this issue. TTWU_QUEUE is there to minimise rq lock
contention, and I guess that this contention is less of an issue on
big.LITTLE systems since they have relatively few CPUs, which
suggests the trade-off makes sense here.
Signed-off-by: Brendan Jackman <brendan.jackman@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
( - Applied from https://patchwork.kernel.org/patch/9895261/
- Fixed trivial conflict in kernel/sched/core.c
- Fixed select_task_rq_idle, now in kernel/sched/idle.c
- Fixed trivial conflict in select_task_rq_fair )
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
Change-Id: I3cfc4bf48c3d7feef969db4d22449f4fbb4f795d
[satyap@codeaurora.org: port to 5.4 and fix trivial merge conflicts]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This change is for general scheduler improvement.
Change-Id: I7a84c7f7444d57f31e0859c4d39450d23421eb73
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
The current code uses the rq->cpu_capacity_orig while sorting
the min/mid/max CPUs while rebuilding the scheduler domains. This
rq->cpu_capacity_orig is subjected to changed when the scaling max
frequency is clipped for that CPU's frequency domain. Since we don't
recompute the min/mid/max CPUs when the capacity is changed, the
sorting becomes incorrect later when the frequency limits are lifted.
The task CPU selection algorithm depends heavily on min/mid/max CPUs
and changing them on the fly results in incorrect task placement.
Hence use the true capacity of CPUs while sorting the min/mid/max
CPUs. This means that the sorting gets changed only when CPUs are
hotplugged out, otherwise these reflect the correct topology
all the time.
The max_cpu_capacity struct in root domain also maintains the
max CPU and its capacity. Since we now use true capacity, there
is no need to compute this on the fly. So move this evaluation from
the periodic load balancer to the scheduler domain rebuilding.
The rq->cpu_capacity_orig is still subjected to change upon frequency
or thermal limits. So we still identify the cases where tasks not
fitting on the max/mid CPUs when the capacity is reduced.
Change-Id: I42735accd079b2ece1eb58d1ebcf322d454e33a2
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
[satyap@codeaurora.org: trivial changes to arch_scale_cpu_capacity()]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
When tasks move across cpusets, the current affinity settings
are lost. Cache the task affinity and restore it during cpuset
migration. The restoring happens only when the cached affinity
is subset of the current cpuset settings.
Change-Id: I6c2ec1d5e3d994e176926d94b9e0cc92418020cc
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
[satyap@codeaurora.org: fix trivial merge conflicts and
replace cs->cpus_requested with cs->cpus_allowed]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
Extend sched_load_balance trace event to print overutilization
status of the current balancing sched domain.
Change-Id: Iae14e580294a0ab38394b4e8d660d0c5dd14327d
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
It is quite a common occurrence that we have a misfit task (a task
running on a CPU which is close to the capacity limit of that CPU)
in the system AND we have recently done a load balance operation.
Normal load-balance rate limiting means we can leave those tasks on
the restrictive CPU for a few hundred ms before we move them.
Inspired by the work Leo Yan did on balancing misfits.
This patch reduces the balance interval to one jiffy when there are such
tasks running.
There appears to be no impact on interactive performance from this
patch.
Change-Id: I71d74734d3bd6bca80476c0f466ba48914b7ac02
Signed-off-by: Chris Redpath <chris.redpath@arm.com>
Git-commit: 84c88fc37932db51b87af8df3cedc621cb5c6e97
Git-repo: https://android.googlesource.com/kernel/common
[clingutla@codeaurora.org: Took only partial part from commit
'84c88fc37932("ANDROID: Combined EAS Load Balance Tweaks")',
and skip using 1 jiffy for busy balancing]
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
The current implementation of overutilization, aborts energy aware
scheduling if any cpu in the system is over-utilized. This patch introduces
over utilization flag per sched domain level instead of a single flag
system wide. Load balancing is done at the sched domain where any
of the cpu is over utilized. If energy aware scheduling is
enabled and no cpu in a sched domain is overuttilized,
load balancing is skipped for that sched domain and energy aware
scheduling continues at that level.
The implementation takes advantage of the shared sched_domain structure
that is common across all the sched domains at a level. The new flag
introduced is placed in this structure so that all the sched domains the
same level share the flag. In case of an overutilized cpu, the flag gets
set at level1 sched_domain. The flag at the parent sched_domain level gets
set in either of the two following scenarios.
1. There is a misfit task in one of the cpu's in this sched_domain.
2. The total utilization of the domain is greater than the domain capacity
The flag is cleared if no cpu in a sched domain is overutilized.
This implementation still can have corner scenarios with respect to
misfit tasks. For example consider a sched group with n cpus and
n+1 70%utilized tasks. Ideally this is a case for load balance to happen
in a parent sched domain. But neither the total group utilization is
high enough for the load balance to be triggered in the parent domain nor
there is a cpu with a single overutilized task so that aload balance is
triggered in a parent domain. But again this could be a purely academic
sceanrio, as during task wake up these tasks will be placed
more appropriately.
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Change-Id: I3f327cff4080096a3e58208dd72c9b7f7913cdb2
Signed-off-by: Chris Redpath <chris.redpath@arm.com>
Git-commit: addef37808728c719d8c095a75bcf81befdacdaf
Git-repo: https://android.googlesource.com/kernel/common/
[clingutla@codeaurora.org: Resolved trivial merge conflicts]
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
[satyap@codeaurora.org: port to 5.x and resolve trivial merge conflicts]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This snapshot is taken from msm-4.19 as of commit 5debecbe7195
("trace: filter out spurious preemption and IRQs disable traces").
Change-Id: I3c9663da1fd89e9e942831fda00a47b4a29ea4e3
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
The cpupri_find() returns the candidate CPUs which are running
lower priority than the waking RT task in the lowest_mask. This
contains isolated CPUs as well. Since the energy aware CPU selection
skips isolated CPUs, no target CPU may be found if all unisolated CPUs
are running higher priority RT tasks. In which case, we fallback to
the default CPU selection algorithm and returns an isolated CPU. This
decision is reversed by select_task_rq() and returns an unisolated
CPU that is busy with other RT tasks. This RT task packing is desired
behavior. However, RT push mechanism pushes the packed RT task to
an isolated CPU. This can be avoided by excluding isolated CPUs from
the lowest_mask returned by cpupri_find().
Change-Id: I75486b3935caf496a638d0333565beffc47fe249
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
[satyap@codeaurora.org: trivial merge conflict resolution]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
Defer the softirq processing to ksoftirqd if a RT task is running
or queued on the current CPU. This complements the RT task placement
algorithm which tries to find a CPU that is not currently busy with
softirqs.
Currently NET_TX, NET_RX, BLOCK and TASKLET softirqs are only deferred
as they can potentially run for long time.
Change-Id: Id7665244af6bbd5a96d9e591cf26154e9eaa860c
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
[satyap@codeaurora.org: trivial merge conflict resolution.]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
The scheduling change (bug 31501544) to avoid putting RT threads on cores that
are handling softint's was catching cases where there was no reason
to believe the softint would take a long time, resulting in unnecessary
migration overhead. This patch reduces the migration to cases where
the core has a softint that is actually likely to take a long time,
as opposed to the RCU, SCHED, and TIMER softints that are rather quick.
Bug: 31752786
Change-Id: Ib4e179f1e15c736b2fdba31070494e357e9fbbe2
Git-commit: ce05770bd37b8065b61ef650108ecef2b97b148b
Git-repo: https://android.googlesource.com/kernel/msm
[pkondeti@codeaurora.org: resolved minor merge conflicts]
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
[satyap@codeaurora.org: resolve trivial merge conflicts]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This snapshot is taken from msm-4.19 as of commit 8a6c9078311bc31
("sched: rt: Fix start cpu for RT energy aware task placement").
Change-Id: I850161a6fa845c9a73c67072299476eb3c3d1888
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This snapshot is taken from msm-4.19 as of commit 89986132507b822
("sched: fair: Improve the scheduler").
Change-Id: I75555a04020478e8d589b6a0fba209501c360dad
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This snapshot is taken from msm-4.19 as of commit 22d004c08a27
("sched/fair: Improve the scheduler").
Change-Id: I8fc95a4a4650de0dc36bd979d374b9335f6af774
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
