* refs/heads/tmp-46d256d
Linux 4.4.97
staging: r8712u: Fix Sparse warning in rtl871x_xmit.c
xen: don't print error message in case of missing Xenstore entry
bt8xx: fix memory leak
s390/dasd: check for device error pointer within state change interrupts
mei: return error on notification request to a disconnected client
exynos4-is: fimc-is: Unmap region obtained by of_iomap()
staging: lustre: ptlrpc: skip lock if export failed
staging: lustre: hsm: stack overrun in hai_dump_data_field
staging: lustre: llite: don't invoke direct_IO for the EOF case
platform/x86: intel_mid_thermal: Fix module autoload
scsi: aacraid: Process Error for response I/O
xen/manage: correct return value check on xenbus_scanf()
cx231xx: Fix I2C on Internal Master 3 Bus
perf tools: Only increase index if perf_evsel__new_idx() succeeds
drm/amdgpu: when dpm disabled, also need to stop/start vce.
i2c: riic: correctly finish transfers
ext4: do not use stripe_width if it is not set
ext4: fix stripe-unaligned allocations
staging: rtl8712u: Fix endian settings for structs describing network packets
mfd: axp20x: Fix axp288 PEK_DBR and PEK_DBF irqs being swapped
mfd: ab8500-sysctrl: Handle probe deferral
ARM: pxa: Don't rely on public mmc header to include leds.h
mmc: s3cmci: include linux/interrupt.h for tasklet_struct
PM / wakeirq: report a wakeup_event on dedicated wekup irq
Fix tracing sample code warning.
tracing/samples: Fix creation and deletion of simple_thread_fn creation
drm/msm: fix an integer overflow test
drm/msm: Fix potential buffer overflow issue
perf tools: Fix build failure on perl script context
ocfs2: fstrim: Fix start offset of first cluster group during fstrim
ARM: 8715/1: add a private asm/unaligned.h
ARM: dts: mvebu: pl310-cache disable double-linefill
arm64: ensure __dump_instr() checks addr_limit
ASoC: adau17x1: Workaround for noise bug in ADC
KEYS: fix out-of-bounds read during ASN.1 parsing
KEYS: return full count in keyring_read() if buffer is too small
cifs: check MaxPathNameComponentLength != 0 before using it
ALSA: seq: Fix nested rwsem annotation for lockdep splat
ALSA: timer: Add missing mutex lock for compat ioctls
BACKPORT: xfrm: Clear sk_dst_cache when applying per-socket policy.
Revert "ANDROID: sched/rt: schedtune: Add boost retention to RT"
cpufreq: Drop schedfreq governor
ANDROID: sched/rt: schedtune: Add boost retention to RT
ANDROID: sched/rt: add schedtune accounting
ANDROID: Revert "arm64: move ELF_ET_DYN_BASE to 4GB / 4MB"
ANDROID: Revert "arm: move ELF_ET_DYN_BASE to 4MB"
sched: EAS: Fix the calculation of group util in group_idle_state()
sched: EAS: update trg_cpu to backup_cpu if no energy saving for target_cpu
sched: EAS: Fix the condition to distinguish energy before/after
Conflicts:
drivers/cpufreq/Kconfig
drivers/gpu/drm/msm/msm_gem_submit.c
kernel/sched/core.c
kernel/sched/fair.c
kernel/sched/rt.c
kernel/sched/sched.h
Change-Id: I0d8c5287cb67fd47c8944a002c0ca71adcdef537
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
We all should be using (and improving) the schedutil governor now. Get
rid of the non-upstream governor.
Tested on Hikey.
Change-Id: Ic660756536e5da51952738c3c18b94e31f58cd57
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
* refs/heads/tmp-6fc0573:
Linux 4.4.71
xfs: only return -errno or success from attr ->put_listent
xfs: in _attrlist_by_handle, copy the cursor back to userspace
xfs: fix unaligned access in xfs_btree_visit_blocks
xfs: bad assertion for delalloc an extent that start at i_size
xfs: fix indlen accounting error on partial delalloc conversion
xfs: wait on new inodes during quotaoff dquot release
xfs: update ag iterator to support wait on new inodes
xfs: support ability to wait on new inodes
xfs: fix up quotacheck buffer list error handling
xfs: prevent multi-fsb dir readahead from reading random blocks
xfs: handle array index overrun in xfs_dir2_leaf_readbuf()
xfs: fix over-copying of getbmap parameters from userspace
xfs: fix off-by-one on max nr_pages in xfs_find_get_desired_pgoff()
xfs: Fix missed holes in SEEK_HOLE implementation
mlock: fix mlock count can not decrease in race condition
mm/migrate: fix refcount handling when !hugepage_migration_supported()
drm/gma500/psb: Actually use VBT mode when it is found
slub/memcg: cure the brainless abuse of sysfs attributes
ALSA: hda - apply STAC_9200_DELL_M22 quirk for Dell Latitude D430
pcmcia: remove left-over %Z format
drm/radeon: Unbreak HPD handling for r600+
drm/radeon/ci: disable mclk switching for high refresh rates (v2)
scsi: mpt3sas: Force request partial completion alignment
HID: wacom: Have wacom_tpc_irq guard against possible NULL dereference
mmc: sdhci-iproc: suppress spurious interrupt with Multiblock read
i2c: i2c-tiny-usb: fix buffer not being DMA capable
vlan: Fix tcp checksum offloads in Q-in-Q vlans
net: phy: marvell: Limit errata to 88m1101
netem: fix skb_orphan_partial()
ipv4: add reference counting to metrics
sctp: fix ICMP processing if skb is non-linear
tcp: avoid fastopen API to be used on AF_UNSPEC
virtio-net: enable TSO/checksum offloads for Q-in-Q vlans
be2net: Fix offload features for Q-in-Q packets
ipv6: fix out of bound writes in __ip6_append_data()
bridge: start hello_timer when enabling KERNEL_STP in br_stp_start
qmi_wwan: add another Lenovo EM74xx device ID
bridge: netlink: check vlan_default_pvid range
ipv6: Check ip6_find_1stfragopt() return value properly.
ipv6: Prevent overrun when parsing v6 header options
net: Improve handling of failures on link and route dumps
tcp: eliminate negative reordering in tcp_clean_rtx_queue
sctp: do not inherit ipv6_{mc|ac|fl}_list from parent
sctp: fix src address selection if using secondary addresses for ipv6
tcp: avoid fragmenting peculiar skbs in SACK
s390/qeth: avoid null pointer dereference on OSN
s390/qeth: unbreak OSM and OSN support
s390/qeth: handle sysfs error during initialization
ipv6/dccp: do not inherit ipv6_mc_list from parent
dccp/tcp: do not inherit mc_list from parent
sparc: Fix -Wstringop-overflow warning
android: base-cfg: disable CONFIG_NFS_FS and CONFIG_NFSD
schedstats/eas: guard properly to avoid breaking non-smp schedstats users
BACKPORT: f2fs: sanity check size of nat and sit cache
FROMLIST: f2fs: sanity check checkpoint segno and blkoff
sched/tune: don't use schedtune before it is ready
sched/fair: use SCHED_CAPACITY_SCALE for energy normalization
sched/{fair,tune}: use reciprocal_value to compute boost margin
sched/tune: Initialize raw_spin_lock in boosted_groups
sched/tune: report when SchedTune has not been initialized
sched/tune: fix sched_energy_diff tracepoint
sched/tune: increase group count to 5
cpufreq/schedutil: use boosted_cpu_util for PELT to match WALT
sched/fair: Fix sched_group_energy() to support per-cpu capacity states
sched/fair: discount task contribution to find CPU with lowest utilization
sched/fair: ensure utilization signals are synchronized before use
sched/fair: remove task util from own cpu when placing waking task
trace:sched: Make util_avg in load_avg trace reflect PELT/WALT as used
sched/fair: Add eas (& cas) specific rq, sd and task stats
sched/core: Fix PELT jump to max OPP upon util increase
sched: EAS & 'single cpu per cluster'/cpu hotplug interoperability
UPSTREAM: sched/core: Fix group_entity's share update
UPSTREAM: sched/fair: Fix calc_cfs_shares() fixed point arithmetics width confusion
UPSTREAM: sched/fair: Fix incorrect task group ->load_avg
UPSTREAM: sched/fair: Fix effective_load() to consistently use smoothed load
UPSTREAM: sched/fair: Propagate asynchrous detach
UPSTREAM: sched/fair: Propagate load during synchronous attach/detach
UPSTREAM: sched/fair: Fix hierarchical order in rq->leaf_cfs_rq_list
BACKPORT: sched/fair: Factorize PELT update
UPSTREAM: sched/fair: Factorize attach/detach entity
UPSTREAM: sched/fair: Improve PELT stuff some more
UPSTREAM: sched/fair: Apply more PELT fixes
UPSTREAM: sched/fair: Fix post_init_entity_util_avg() serialization
BACKPORT: sched/fair: Initiate a new task's util avg to a bounded value
sched/fair: Simplify idle_idx handling in select_idle_sibling()
sched/fair: refactor find_best_target() for simplicity
sched/fair: Change cpu iteration order in find_best_target()
sched/core: Add first cpu w/ max/min orig capacity to root domain
sched/core: Remove remnants of commit fd5c98da1a42
sched: Remove sysctl_sched_is_big_little
sched/fair: Code !is_big_little path into select_energy_cpu_brute()
EAS: sched/fair: Re-integrate 'honor sync wakeups' into wakeup path
Fixup!: sched/fair.c: Set SchedTune specific struct energy_env.task
sched/fair: Energy-aware wake-up task placement
sched/fair: Add energy_diff dead-zone margin
sched/fair: Decommission energy_aware_wake_cpu()
sched/fair: Do not force want_affine eq. true if EAS is enabled
arm64: Set SD_ASYM_CPUCAPACITY sched_domain flag on DIE level
UPSTREAM: sched/fair: Fix incorrect comment for capacity_margin
UPSTREAM: sched/fair: Avoid pulling tasks from non-overloaded higher capacity groups
UPSTREAM: sched/fair: Add per-CPU min capacity to sched_group_capacity
UPSTREAM: sched/fair: Consider spare capacity in find_idlest_group()
UPSTREAM: sched/fair: Compute task/cpu utilization at wake-up correctly
UPSTREAM: sched/fair: Let asymmetric CPU configurations balance at wake-up
UPSTREAM: sched/core: Enable SD_BALANCE_WAKE for asymmetric capacity systems
UPSTREAM: sched/core: Pass child domain into sd_init()
UPSTREAM: sched/core: Introduce SD_ASYM_CPUCAPACITY sched_domain topology flag
UPSTREAM: sched/core: Remove unnecessary NULL-pointer check
UPSTREAM: sched/fair: Optimize find_idlest_cpu() when there is no choice
BACKPORT: sched/fair: Make the use of prev_cpu consistent in the wakeup path
UPSTREAM: sched/core: Fix power to capacity renaming in comment
Partial Revert: "WIP: sched: Add cpu capacity awareness to wakeup balancing"
Revert "WIP: sched: Consider spare cpu capacity at task wake-up"
FROM-LIST: cpufreq: schedutil: Redefine the rate_limit_us tunable
cpufreq: schedutil: add up/down frequency transition rate limits
trace/sched: add rq utilization signal for WALT
sched/cpufreq: make schedutil use WALT signal
sched: cpufreq: use rt_avg as estimate of required RT CPU capacity
cpufreq: schedutil: move slow path from workqueue to SCHED_FIFO task
BACKPORT: kthread: allow to cancel kthread work
sched/cpufreq: fix tunables for schedfreq governor
BACKPORT: cpufreq: schedutil: New governor based on scheduler utilization data
sched: backport cpufreq hooks from 4.9-rc4
ANDROID: Kconfig: add depends for UID_SYS_STATS
ANDROID: hid: uhid: implement refcount for open and close
Revert "ext4: require encryption feature for EXT4_IOC_SET_ENCRYPTION_POLICY"
ANDROID: mnt: Fix next_descendent
Conflicts:
include/trace/events/sched.h
kernel/sched/Makefile
kernel/sched/core.c
kernel/sched/fair.c
kernel/sched/sched.h
Change-Id: I55318828f2c858e192ac7015bcf2bf0ec5c5b2c5
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
With the new wakeup approach this sysctl is not necessary any more.
Change-Id: I52114b3c918791f6a4f9f30f50002919ccbc1a9c
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
(cherry picked from commit 885c0d503bcdf0ef4e9b46822496f16b20aa3bbd)
Signed-off-by: Chris Redpath <chris.redpath@arm.com>
Setting sched_freq_reporting_policy tunable to an unsupported
values results in a warning from the scheduler. The previous
policy setting is also lost.
As sched_freq_reporting_policy can not be set to an incorrect
value now, remove the WARN_ON_ONCE from the scheduler.
Change-Id: I58d7e5dfefb7d11d2309bc05a1dd66acdc11b766
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Colocation in HMP includes a tunable that turns on or off the feature
globally across all colocation groups. Supporting this tunable correctly
would result in complexity that would outweigh any foreseeable benefits.
For example, disabling the feature globally would involve deleting all
colocation groups one by one while ensuring no placement decisions are
made during the process.
Remove the tunable. Adding or removing a task from a colocation group is
still possible and so we're not losing functionality.
Change-Id: I4cb8bcdbee98d3bdd168baacbac345eca9ea8879
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>
Since clusters can vary significantly in the power and performance
characteristics, there may be a need to have different CPU selection
policies based on which cluster a task is being placed on. For example
the placement policy can be more aggressive in using idle CPUs on
cluster that are power efficient and less aggressive on clusters
that are geared towards performance. Add support for per cluster
wake_up_idle flag to allow greater flexibility in placement policies.
Change-Id: I18cd3d907cd965db03a13f4655870dc10c07acfe
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
Low sleep time can be an indication that waking tasks will not receive
any vruntime bonus and hence would suffer from latency when packed.
short-burst tasks sleeping on an average more than sched_short_sleep_ns
are not eligible for packing. This policy covers the case where a
task runs in short bursts and sleeping for smaller duration in between.
Change-Id: Ib81fa37809b85c267949cd433bc6115dd89f100e
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
* v4.4-16.09-android-tmp:
unsafe_[get|put]_user: change interface to use a error target label
usercopy: remove page-spanning test for now
usercopy: fix overlap check for kernel text
mm/slub: support left redzone
Linux 4.4.21
lib/mpi: mpi_write_sgl(): fix skipping of leading zero limbs
regulator: anatop: allow regulator to be in bypass mode
hwrng: exynos - Disable runtime PM on probe failure
cpufreq: Fix GOV_LIMITS handling for the userspace governor
metag: Fix atomic_*_return inline asm constraints
scsi: fix upper bounds check of sense key in scsi_sense_key_string()
ALSA: timer: fix NULL pointer dereference on memory allocation failure
ALSA: timer: fix division by zero after SNDRV_TIMER_IOCTL_CONTINUE
ALSA: timer: fix NULL pointer dereference in read()/ioctl() race
ALSA: hda - Enable subwoofer on Dell Inspiron 7559
ALSA: hda - Add headset mic quirk for Dell Inspiron 5468
ALSA: rawmidi: Fix possible deadlock with virmidi registration
ALSA: fireworks: accessing to user space outside spinlock
ALSA: firewire-tascam: accessing to user space outside spinlock
ALSA: usb-audio: Add sample rate inquiry quirk for B850V3 CP2114
crypto: caam - fix IV loading for authenc (giv)decryption
uprobes: Fix the memcg accounting
x86/apic: Do not init irq remapping if ioapic is disabled
vhost/scsi: fix reuse of &vq->iov[out] in response
bcache: RESERVE_PRIO is too small by one when prio_buckets() is a power of two.
ubifs: Fix assertion in layout_in_gaps()
ovl: fix workdir creation
ovl: listxattr: use strnlen()
ovl: remove posix_acl_default from workdir
ovl: don't copy up opaqueness
wrappers for ->i_mutex access
lustre: remove unused declaration
timekeeping: Avoid taking lock in NMI path with CONFIG_DEBUG_TIMEKEEPING
timekeeping: Cap array access in timekeeping_debug
xfs: fix superblock inprogress check
ASoC: atmel_ssc_dai: Don't unconditionally reset SSC on stream startup
drm/msm: fix use of copy_from_user() while holding spinlock
drm: Reject page_flip for !DRIVER_MODESET
drm/radeon: fix radeon_move_blit on 32bit systems
s390/sclp_ctl: fix potential information leak with /dev/sclp
rds: fix an infoleak in rds_inc_info_copy
powerpc/tm: Avoid SLB faults in treclaim/trecheckpoint when RI=0
nvme: Call pci_disable_device on the error path.
cgroup: reduce read locked section of cgroup_threadgroup_rwsem during fork
block: make sure a big bio is split into at most 256 bvecs
block: Fix race triggered by blk_set_queue_dying()
ext4: avoid modifying checksum fields directly during checksum verification
ext4: avoid deadlock when expanding inode size
ext4: properly align shifted xattrs when expanding inodes
ext4: fix xattr shifting when expanding inodes part 2
ext4: fix xattr shifting when expanding inodes
ext4: validate that metadata blocks do not overlap superblock
net: Use ns_capable_noaudit() when determining net sysctl permissions
kernel: Add noaudit variant of ns_capable()
KEYS: Fix ASN.1 indefinite length object parsing
drivers:hv: Lock access to hyperv_mmio resource tree
cxlflash: Move to exponential back-off when cmd_room is not available
netfilter: x_tables: check for size overflow
drm/amdgpu/cz: enable/disable vce dpm even if vce pg is disabled
cred: Reject inodes with invalid ids in set_create_file_as()
fs: Check for invalid i_uid in may_follow_link()
IB/IPoIB: Do not set skb truesize since using one linearskb
udp: properly support MSG_PEEK with truncated buffers
crypto: nx-842 - Mask XERS0 bit in return value
cxlflash: Fix to avoid virtual LUN failover failure
cxlflash: Fix to escalate LINK_RESET also on port 1
tipc: fix nl compat regression for link statistics
tipc: fix an infoleak in tipc_nl_compat_link_dump
netfilter: x_tables: check for size overflow
Bluetooth: Add support for Intel Bluetooth device 8265 [8087:0a2b]
drm/i915: Check VBT for port presence in addition to the strap on VLV/CHV
drm/i915: Only ignore eDP ports that are connected
Input: xpad - move pending clear to the correct location
net: thunderx: Fix link status reporting
x86/hyperv: Avoid reporting bogus NMI status for Gen2 instances
crypto: vmx - IV size failing on skcipher API
tda10071: Fix dependency to REGMAP_I2C
crypto: vmx - Fix ABI detection
crypto: vmx - comply with ABIs that specify vrsave as reserved.
HID: core: prevent out-of-bound readings
lpfc: Fix DMA faults observed upon plugging loopback connector
block: fix blk_rq_get_max_sectors for driver private requests
irqchip/gicv3-its: numa: Enable workaround for Cavium thunderx erratum 23144
clocksource: Allow unregistering the watchdog
btrfs: Continue write in case of can_not_nocow
blk-mq: End unstarted requests on dying queue
cxlflash: Fix to resolve dead-lock during EEH recovery
drm/radeon/mst: fix regression in lane/link handling.
ecryptfs: fix handling of directory opening
ALSA: hda: add AMD Polaris-10/11 AZ PCI IDs with proper driver caps
drm: Balance error path for GEM handle allocation
ntp: Fix ADJ_SETOFFSET being used w/ ADJ_NANO
time: Verify time values in adjtimex ADJ_SETOFFSET to avoid overflow
Input: xpad - correctly handle concurrent LED and FF requests
net: thunderx: Fix receive packet stats
net: thunderx: Fix for multiqset not configured upon interface toggle
perf/x86/cqm: Fix CQM memory leak and notifier leak
perf/x86/cqm: Fix CQM handling of grouping events into a cache_group
s390/crypto: provide correct file mode at device register.
proc: revert /proc/<pid>/maps [stack:TID] annotation
intel_idle: Support for Intel Xeon Phi Processor x200 Product Family
cxlflash: Fix to avoid unnecessary scan with internal LUNs
Drivers: hv: vmbus: don't manipulate with clocksources on crash
Drivers: hv: vmbus: avoid scheduling in interrupt context in vmbus_initiate_unload()
Drivers: hv: vmbus: avoid infinite loop in init_vp_index()
arcmsr: fixes not release allocated resource
arcmsr: fixed getting wrong configuration data
s390/pci_dma: fix DMA table corruption with > 4 TB main memory
net/mlx5e: Don't modify CQ before it was created
net/mlx5e: Don't try to modify CQ moderation if it is not supported
mmc: sdhci: Do not BUG on invalid vdd
UVC: Add support for R200 depth camera
sched/numa: Fix use-after-free bug in the task_numa_compare
ALSA: hda - add codec support for Kabylake display audio codec
drm/i915: Fix hpd live status bits for g4x
tipc: fix nullptr crash during subscription cancel
arm64: Add workaround for Cavium erratum 27456
net: thunderx: Fix for Qset error due to CQ full
drm/radeon: fix dp link rate selection (v2)
drm/amdgpu: fix dp link rate selection (v2)
qla2xxx: Use ATIO type to send correct tmr response
mmc: sdhci: 64-bit DMA actually has 4-byte alignment
drm/atomic: Do not unset crtc when an encoder is stolen
drm/i915/skl: Add missing SKL ids
drm/i915/bxt: update list of PCIIDs
hrtimer: Catch illegal clockids
i40e/i40evf: Fix RSS rx-flow-hash configuration through ethtool
mpt3sas: Fix for Asynchronous completion of timedout IO and task abort of timedout IO.
mpt3sas: A correction in unmap_resources
net: cavium: liquidio: fix check for in progress flag
arm64: KVM: Configure TCR_EL2.PS at runtime
irqchip/gic-v3: Make sure read from ICC_IAR1_EL1 is visible on redestributor
pwm: lpc32xx: fix and simplify duty cycle and period calculations
pwm: lpc32xx: correct number of PWM channels from 2 to 1
pwm: fsl-ftm: Fix clock enable/disable when using PM
megaraid_sas: Add an i/o barrier
megaraid_sas: Fix SMAP issue
megaraid_sas: Do not allow PCI access during OCR
s390/cio: update measurement characteristics
s390/cio: ensure consistent measurement state
s390/cio: fix measurement characteristics memleak
qeth: initialize net_device with carrier off
lpfc: Fix external loopback failure.
lpfc: Fix mbox reuse in PLOGI completion
lpfc: Fix RDP Speed reporting.
lpfc: Fix crash in fcp command completion path.
lpfc: Fix driver crash when module parameter lpfc_fcp_io_channel set to 16
lpfc: Fix RegLogin failed error seen on Lancer FC during port bounce
lpfc: Fix the FLOGI discovery logic to comply with T11 standards
lpfc: Fix FCF Infinite loop in lpfc_sli4_fcf_rr_next_index_get.
cxl: Enable PCI device ID for future IBM CXL adapter
cxl: fix build for GCC 4.6.x
cxlflash: Enable device id for future IBM CXL adapter
cxlflash: Resolve oops in wait_port_offline
cxlflash: Fix to resolve cmd leak after host reset
cxl: Fix DSI misses when the context owning task exits
cxl: Fix possible idr warning when contexts are released
Drivers: hv: vmbus: fix rescind-offer handling for device without a driver
Drivers: hv: vmbus: serialize process_chn_event() and vmbus_close_internal()
Drivers: hv: vss: run only on supported host versions
drivers/hv: cleanup synic msrs if vmbus connect failed
Drivers: hv: util: catch allocation errors
tools: hv: report ENOSPC errors in hv_fcopy_daemon
Drivers: hv: utils: run polling callback always in interrupt context
Drivers: hv: util: Increase the timeout for util services
lightnvm: fix missing grown bad block type
lightnvm: fix locking and mempool in rrpc_lun_gc
lightnvm: unlock rq and free ppa_list on submission fail
lightnvm: add check after mempool allocation
lightnvm: fix incorrect nr_free_blocks stat
lightnvm: fix bio submission issue
cxlflash: a couple off by one bugs
fm10k: Cleanup exception handling for mailbox interrupt
fm10k: Cleanup MSI-X interrupts in case of failure
fm10k: reinitialize queuing scheme after calling init_hw
fm10k: always check init_hw for errors
fm10k: reset max_queues on init_hw_vf failure
fm10k: Fix handling of NAPI budget when multiple queues are enabled per vector
fm10k: Correct MTU for jumbo frames
fm10k: do not assume VF always has 1 queue
clk: xgene: Fix divider with non-zero shift value
e1000e: fix division by zero on jumbo MTUs
e1000: fix data race between tx_ring->next_to_clean
ixgbe: Fix handling of NAPI budget when multiple queues are enabled per vector
igb: fix NULL derefs due to skipped SR-IOV enabling
igb: use the correct i210 register for EEMNGCTL
igb: don't unmap NULL hw_addr
i40e: Fix Rx hash reported to the stack by our driver
i40e: clean whole mac filter list
i40evf: check rings before freeing resources
i40e: don't add zero MAC filter
i40e: properly delete VF MAC filters
i40e: Fix memory leaks, sideband filter programming
i40e: fix: do not sleep in netdev_ops
i40e/i40evf: Fix RS bit update in Tx path and disable force WB workaround
i40evf: handle many MAC filters correctly
i40e: Workaround fix for mss < 256 issue
UPSTREAM: audit: fix a double fetch in audit_log_single_execve_arg()
UPSTREAM: ARM: 8494/1: mm: Enable PXN when running non-LPAE kernel on LPAE processor
FIXUP: sched/tune: update accouting before CPU capacity
FIXUP: sched/tune: add fixes missing from a previous patch
arm: Fix #if/#ifdef typo in topology.c
arm: Fix build error "conflicting types for 'scale_cpu_capacity'"
sched/walt: use do_div instead of division operator
DEBUG: cpufreq: fix cpu_capacity tracing build for non-smp systems
sched/walt: include missing header for arm_timer_read_counter()
cpufreq: Kconfig: Fixup incorrect selection by CPU_FREQ_DEFAULT_GOV_SCHED
sched/fair: Avoid redundant idle_cpu() call in update_sg_lb_stats()
FIXUP: sched: scheduler-driven cpu frequency selection
sched/rt: Add Kconfig option to enable panicking for RT throttling
sched/rt: print RT tasks when RT throttling is activated
UPSTREAM: sched: Fix a race between __kthread_bind() and sched_setaffinity()
sched/fair: Favor higher cpus only for boosted tasks
vmstat: make vmstat_updater deferrable again and shut down on idle
sched/fair: call OPP update when going idle after migration
sched/cpufreq_sched: fix thermal capping events
sched/fair: Picking cpus with low OPPs for tasks that prefer idle CPUs
FIXUP: sched/tune: do initialization as a postcore_initicall
DEBUG: sched: add tracepoint for RD overutilized
sched/tune: Introducing a new schedtune attribute prefer_idle
sched: use util instead of capacity to select busy cpu
arch_timer: add error handling when the MPM global timer is cleared
FIXUP: sched: Fix double-release of spinlock in move_queued_task
FIXUP: sched/fair: Fix hang during suspend in sched_group_energy
FIXUP: sched: fix SchedFreq integration for both PELT and WALT
sched: EAS: Avoid causing spikes to max-freq unnecessarily
FIXUP: sched: fix set_cfs_cpu_capacity when WALT is in use
sched/walt: Accounting for number of irqs pending on each core
sched: Introduce Window Assisted Load Tracking (WALT)
sched/tune: fix PB and PC cuts indexes definition
sched/fair: optimize idle cpu selection for boosted tasks
FIXUP: sched/tune: fix accounting for runnable tasks
sched/tune: use a single initialisation function
sched/{fair,tune}: simplify fair.c code
FIXUP: sched/tune: fix payoff calculation for boost region
sched/tune: Add support for negative boost values
FIX: sched/tune: move schedtune_nornalize_energy into fair.c
FIX: sched/tune: update usage of boosted task utilisation on CPU selection
sched/fair: add tunable to set initial task load
sched/fair: add tunable to force selection at cpu granularity
sched: EAS: take cstate into account when selecting idle core
sched/cpufreq_sched: Consolidated update
FIXUP: sched: fix build for non-SMP target
DEBUG: sched/tune: add tracepoint on P-E space filtering
DEBUG: sched/tune: add tracepoint for energy_diff() values
DEBUG: sched/tune: add tracepoint for task boost signal
arm: topology: Define TC2 energy and provide it to the scheduler
CHROMIUM: sched: update the average of nr_running
DEBUG: schedtune: add tracepoint for schedtune_tasks_update() values
DEBUG: schedtune: add tracepoint for CPU boost signal
DEBUG: schedtune: add tracepoint for SchedTune configuration update
DEBUG: sched: add energy procfs interface
DEBUG: sched,cpufreq: add cpu_capacity change tracepoint
DEBUG: sched: add tracepoint for CPU load/util signals
DEBUG: sched: add tracepoint for task load/util signals
DEBUG: sched: add tracepoint for cpu/freq scale invariance
sched/fair: filter energy_diff() based on energy_payoff value
sched/tune: add support to compute normalized energy
sched/fair: keep track of energy/capacity variations
sched/fair: add boosted task utilization
sched/{fair,tune}: track RUNNABLE tasks impact on per CPU boost value
sched/tune: compute and keep track of per CPU boost value
sched/tune: add initial support for CGroups based boosting
sched/fair: add boosted CPU usage
sched/fair: add function to convert boost value into "margin"
sched/tune: add sysctl interface to define a boost value
sched/tune: add detailed documentation
fixup! sched/fair: jump to max OPP when crossing UP threshold
fixup! sched: scheduler-driven cpu frequency selection
sched: rt scheduler sets capacity requirement
sched: deadline: use deadline bandwidth in scale_rt_capacity
sched: remove call of sched_avg_update from sched_rt_avg_update
sched/cpufreq_sched: add trace events
sched/fair: jump to max OPP when crossing UP threshold
sched/fair: cpufreq_sched triggers for load balancing
sched/{core,fair}: trigger OPP change request on fork()
sched/fair: add triggers for OPP change requests
sched: scheduler-driven cpu frequency selection
cpufreq: introduce cpufreq_driver_is_slow
sched: Consider misfit tasks when load-balancing
sched: Add group_misfit_task load-balance type
sched: Add per-cpu max capacity to sched_group_capacity
sched: Do eas idle balance regardless of the rq avg idle value
arm64: Enable max freq invariant scheduler load-tracking and capacity support
arm: Enable max freq invariant scheduler load-tracking and capacity support
sched: Update max cpu capacity in case of max frequency constraints
cpufreq: Max freq invariant scheduler load-tracking and cpu capacity support
arm64, topology: Updates to use DT bindings for EAS costing data
sched: Support for extracting EAS energy costs from DT
Documentation: DT bindings for energy model cost data required by EAS
sched: Disable energy-unfriendly nohz kicks
sched: Consider a not over-utilized energy-aware system as balanced
sched: Energy-aware wake-up task placement
sched: Determine the current sched_group idle-state
sched, cpuidle: Track cpuidle state index in the scheduler
sched: Add over-utilization/tipping point indicator
sched: Estimate energy impact of scheduling decisions
sched: Extend sched_group_energy to test load-balancing decisions
sched: Calculate energy consumption of sched_group
sched: Highest energy aware balancing sched_domain level pointer
sched: Relocated cpu_util() and change return type
sched: Compute cpu capacity available at current frequency
arm64: Cpu invariant scheduler load-tracking and capacity support
arm: Cpu invariant scheduler load-tracking and capacity support
sched: Introduce SD_SHARE_CAP_STATES sched_domain flag
sched: Initialize energy data structures
sched: Introduce energy data structures
sched: Make energy awareness a sched feature
sched: Documentation for scheduler energy cost model
sched: Prevent unnecessary active balance of single task in sched group
sched: Enable idle balance to pull single task towards cpu with higher capacity
sched: Consider spare cpu capacity at task wake-up
sched: Add cpu capacity awareness to wakeup balancing
sched: Store system-wide maximum cpu capacity in root domain
arm: Update arch_scale_cpu_capacity() to reflect change to define
arm64: Enable frequency invariant scheduler load-tracking support
arm: Enable frequency invariant scheduler load-tracking support
cpufreq: Frequency invariant scheduler load-tracking support
sched/fair: Fix new task's load avg removed from source CPU in wake_up_new_task()
FROMLIST: pstore: drop pmsg bounce buffer
UPSTREAM: usercopy: remove page-spanning test for now
UPSTREAM: usercopy: force check_object_size() inline
BACKPORT: usercopy: fold builtin_const check into inline function
UPSTREAM: x86/uaccess: force copy_*_user() to be inlined
UPSTREAM: HID: core: prevent out-of-bound readings
Android: Fix build breakages.
UPSTREAM: tty: Prevent ldisc drivers from re-using stale tty fields
UPSTREAM: netfilter: nfnetlink: correctly validate length of batch messages
cpuset: Make cpusets restore on hotplug
UPSTREAM: mm/slub: support left redzone
UPSTREAM: Make the hardened user-copy code depend on having a hardened allocator
Android: MMC/UFS IO Latency Histograms.
UPSTREAM: usercopy: fix overlap check for kernel text
UPSTREAM: usercopy: avoid potentially undefined behavior in pointer math
UPSTREAM: unsafe_[get|put]_user: change interface to use a error target label
BACKPORT: arm64: mm: fix location of _etext
BACKPORT: ARM: 8583/1: mm: fix location of _etext
BACKPORT: Don't show empty tag stats for unprivileged uids
UPSTREAM: tcp: fix use after free in tcp_xmit_retransmit_queue()
ANDROID: base-cfg: drop SECCOMP_FILTER config
UPSTREAM: [media] xc2028: unlock on error in xc2028_set_config()
UPSTREAM: [media] xc2028: avoid use after free
ANDROID: base-cfg: enable SECCOMP config
ANDROID: rcu_sync: Export rcu_sync_lockdep_assert
RFC: FROMLIST: cgroup: reduce read locked section of cgroup_threadgroup_rwsem during fork
RFC: FROMLIST: cgroup: avoid synchronize_sched() in __cgroup_procs_write()
RFC: FROMLIST: locking/percpu-rwsem: Optimize readers and reduce global impact
net: ipv6: Fix ping to link-local addresses.
ipv6: fix endianness error in icmpv6_err
ANDROID: dm: android-verity: Allow android-verity to be compiled as an independent module
backporting: a brief introduce of backported feautures on 4.4
Linux 4.4.20
sysfs: correctly handle read offset on PREALLOC attrs
hwmon: (iio_hwmon) fix memory leak in name attribute
ALSA: line6: Fix POD sysfs attributes segfault
ALSA: line6: Give up on the lock while URBs are released.
ALSA: line6: Remove double line6_pcm_release() after failed acquire.
ACPI / SRAT: fix SRAT parsing order with both LAPIC and X2APIC present
ACPI / sysfs: fix error code in get_status()
ACPI / drivers: replace acpi_probe_lock spinlock with mutex
ACPI / drivers: fix typo in ACPI_DECLARE_PROBE_ENTRY macro
staging: comedi: ni_mio_common: fix wrong insn_write handler
staging: comedi: ni_mio_common: fix AO inttrig backwards compatibility
staging: comedi: comedi_test: fix timer race conditions
staging: comedi: daqboard2000: bug fix board type matching code
USB: serial: option: add WeTelecom 0x6802 and 0x6803 products
USB: serial: option: add WeTelecom WM-D200
USB: serial: mos7840: fix non-atomic allocation in write path
USB: serial: mos7720: fix non-atomic allocation in write path
USB: fix typo in wMaxPacketSize validation
usb: chipidea: udc: don't touch DP when controller is in host mode
USB: avoid left shift by -1
dmaengine: usb-dmac: check CHCR.DE bit in usb_dmac_isr_channel()
crypto: qat - fix aes-xts key sizes
crypto: nx - off by one bug in nx_of_update_msc()
Input: i8042 - set up shared ps2_cmd_mutex for AUX ports
Input: i8042 - break load dependency between atkbd/psmouse and i8042
Input: tegra-kbc - fix inverted reset logic
btrfs: properly track when rescan worker is running
btrfs: waiting on qgroup rescan should not always be interruptible
fs/seq_file: fix out-of-bounds read
gpio: Fix OF build problem on UM
usb: renesas_usbhs: gadget: fix return value check in usbhs_mod_gadget_probe()
megaraid_sas: Fix probing cards without io port
mpt3sas: Fix resume on WarpDrive flash cards
cdc-acm: fix wrong pipe type on rx interrupt xfers
i2c: cros-ec-tunnel: Fix usage of cros_ec_cmd_xfer()
mfd: cros_ec: Add cros_ec_cmd_xfer_status() helper
aacraid: Check size values after double-fetch from user
ARC: Elide redundant setup of DMA callbacks
ARC: Call trace_hardirqs_on() before enabling irqs
ARC: use correct offset in pt_regs for saving/restoring user mode r25
ARC: build: Better way to detect ISA compatible toolchain
drm/i915: fix aliasing_ppgtt leak
drm/amdgpu: record error code when ring test failed
drm/amd/amdgpu: sdma resume fail during S4 on CI
drm/amdgpu: skip TV/CV in display parsing
drm/amdgpu: avoid a possible array overflow
drm/amdgpu: fix amdgpu_move_blit on 32bit systems
drm/amdgpu: Change GART offset to 64-bit
iio: fix sched WARNING "do not call blocking ops when !TASK_RUNNING"
sched/nohz: Fix affine unpinned timers mess
sched/cputime: Fix NO_HZ_FULL getrusage() monotonicity regression
of: fix reference counting in of_graph_get_endpoint_by_regs
arm64: dts: rockchip: add reset saradc node for rk3368 SoCs
mac80211: fix purging multicast PS buffer queue
s390/dasd: fix hanging device after clear subchannel
EDAC: Increment correct counter in edac_inc_ue_error()
pinctrl/amd: Remove the default de-bounce time
iommu/arm-smmu: Don't BUG() if we find aborting STEs with disable_bypass
iommu/arm-smmu: Fix CMDQ error handling
iommu/dma: Don't put uninitialised IOVA domains
xhci: Make sure xhci handles USB_SPEED_SUPER_PLUS devices.
USB: serial: ftdi_sio: add PIDs for Ivium Technologies devices
USB: serial: ftdi_sio: add device ID for WICED USB UART dev board
USB: serial: option: add support for Telit LE920A4
USB: serial: option: add D-Link DWM-156/A3
USB: serial: fix memleak in driver-registration error path
xhci: don't dereference a xhci member after removing xhci
usb: xhci: Fix panic if disconnect
xhci: always handle "Command Ring Stopped" events
usb/gadget: fix gadgetfs aio support.
usb: gadget: fsl_qe_udc: off by one in setup_received_handle()
USB: validate wMaxPacketValue entries in endpoint descriptors
usb: renesas_usbhs: Use dmac only if the pipe type is bulk
usb: renesas_usbhs: clear the BRDYSTS in usbhsg_ep_enable()
USB: hub: change the locking in hub_activate
USB: hub: fix up early-exit pathway in hub_activate
usb: hub: Fix unbalanced reference count/memory leak/deadlocks
usb: define USB_SPEED_SUPER_PLUS speed for SuperSpeedPlus USB3.1 devices
usb: dwc3: gadget: increment request->actual once
usb: dwc3: pci: add Intel Kabylake PCI ID
usb: misc: usbtest: add fix for driver hang
usb: ehci: change order of register cleanup during shutdown
crypto: caam - defer aead_set_sh_desc in case of zero authsize
crypto: caam - fix echainiv(authenc) encrypt shared descriptor
crypto: caam - fix non-hmac hashes
genirq/msi: Make sure PCI MSIs are activated early
genirq/msi: Remove unused MSI_FLAG_IDENTITY_MAP
um: Don't discard .text.exit section
ACPI / CPPC: Prevent cpc_desc_ptr points to the invalid data
ACPI: CPPC: Return error if _CPC is invalid on a CPU
mmc: sdhci-acpi: Reduce Baytrail eMMC/SD/SDIO hangs
PCI: Limit config space size for Netronome NFP4000
PCI: Add Netronome NFP4000 PF device ID
PCI: Limit config space size for Netronome NFP6000 family
PCI: Add Netronome vendor and device IDs
PCI: Support PCIe devices with short cfg_size
NVMe: Don't unmap controller registers on reset
ALSA: hda - Manage power well properly for resume
libnvdimm, nd_blk: mask off reserved status bits
perf intel-pt: Fix occasional decoding errors when tracing system-wide
vfio/pci: Fix NULL pointer oops in error interrupt setup handling
virtio: fix memory leak in virtqueue_add()
parisc: Fix order of EREFUSED define in errno.h
arm64: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
ALSA: usb-audio: Add quirk for ELP HD USB Camera
ALSA: usb-audio: Add a sample rate quirk for Creative Live! Cam Socialize HD (VF0610)
powerpc/eeh: eeh_pci_enable(): fix checking of post-request state
SUNRPC: allow for upcalls for same uid but different gss service
SUNRPC: Handle EADDRNOTAVAIL on connection failures
tools/testing/nvdimm: fix SIGTERM vs hotplug crash
uprobes/x86: Fix RIP-relative handling of EVEX-encoded instructions
x86/mm: Disable preemption during CR3 read+write
hugetlb: fix nr_pmds accounting with shared page tables
mm: SLUB hardened usercopy support
mm: SLAB hardened usercopy support
s390/uaccess: Enable hardened usercopy
sparc/uaccess: Enable hardened usercopy
powerpc/uaccess: Enable hardened usercopy
ia64/uaccess: Enable hardened usercopy
arm64/uaccess: Enable hardened usercopy
ARM: uaccess: Enable hardened usercopy
x86/uaccess: Enable hardened usercopy
x86: remove more uaccess_32.h complexity
x86: remove pointless uaccess_32.h complexity
x86: fix SMAP in 32-bit environments
Use the new batched user accesses in generic user string handling
Add 'unsafe' user access functions for batched accesses
x86: reorganize SMAP handling in user space accesses
mm: Hardened usercopy
mm: Implement stack frame object validation
mm: Add is_migrate_cma_page
Linux 4.4.19
Documentation/module-signing.txt: Note need for version info if reusing a key
module: Invalidate signatures on force-loaded modules
dm flakey: error READ bios during the down_interval
rtc: s3c: Add s3c_rtc_{enable/disable}_clk in s3c_rtc_setfreq()
lpfc: fix oops in lpfc_sli4_scmd_to_wqidx_distr() from lpfc_send_taskmgmt()
ACPI / EC: Work around method reentrancy limit in ACPICA for _Qxx
x86/platform/intel_mid_pci: Rework IRQ0 workaround
PCI: Mark Atheros AR9485 and QCA9882 to avoid bus reset
MIPS: hpet: Increase HPET_MIN_PROG_DELTA and decrease HPET_MIN_CYCLES
MIPS: Don't register r4k sched clock when CPUFREQ enabled
MIPS: mm: Fix definition of R6 cache instruction
SUNRPC: Don't allocate a full sockaddr_storage for tracing
Input: elan_i2c - properly wake up touchpad on ASUS laptops
target: Fix ordered task CHECK_CONDITION early exception handling
target: Fix max_unmap_lba_count calc overflow
target: Fix race between iscsi-target connection shutdown + ABORT_TASK
target: Fix missing complete during ABORT_TASK + CMD_T_FABRIC_STOP
target: Fix ordered task target_setup_cmd_from_cdb exception hang
iscsi-target: Fix panic when adding second TCP connection to iSCSI session
ubi: Fix race condition between ubi device creation and udev
ubi: Fix early logging
ubi: Make volume resize power cut aware
of: fix memory leak related to safe_name()
IB/mlx4: Fix memory leak if QP creation failed
IB/mlx4: Fix error flow when sending mads under SRIOV
IB/mlx4: Fix the SQ size of an RC QP
IB/IWPM: Fix a potential skb leak
IB/IPoIB: Don't update neigh validity for unresolved entries
IB/SA: Use correct free function
IB/mlx5: Return PORT_ERR in Active to Initializing tranisition
IB/mlx5: Fix post send fence logic
IB/mlx5: Fix entries check in mlx5_ib_resize_cq
IB/mlx5: Fix returned values of query QP
IB/mlx5: Fix entries checks in mlx5_ib_create_cq
IB/mlx5: Fix MODIFY_QP command input structure
ALSA: hda - Fix headset mic detection problem for two dell machines
ALSA: hda: add AMD Bonaire AZ PCI ID with proper driver caps
ALSA: hda/realtek - Can't adjust speaker's volume on a Dell AIO
ALSA: hda: Fix krealloc() with __GFP_ZERO usage
mm/hugetlb: avoid soft lockup in set_max_huge_pages()
mtd: nand: fix bug writing 1 byte less than page size
block: fix bdi vs gendisk lifetime mismatch
block: add missing group association in bio-cloning functions
metag: Fix __cmpxchg_u32 asm constraint for CMP
ftrace/recordmcount: Work around for addition of metag magic but not relocations
balloon: check the number of available pages in leak balloon
drm/i915/dp: Revert "drm/i915/dp: fall back to 18 bpp when sink capability is unknown"
drm/i915: Never fully mask the the EI up rps interrupt on SNB/IVB
drm/edid: Add 6 bpc quirk for display AEO model 0.
drm: Restore double clflush on the last partial cacheline
drm/nouveau/fbcon: fix font width not divisible by 8
drm/nouveau/gr/nv3x: fix instobj write offsets in gr setup
drm/nouveau: check for supported chipset before booting fbdev off the hw
drm/radeon: support backlight control for UNIPHY3
drm/radeon: fix firmware info version checks
drm/radeon: Poll for both connect/disconnect on analog connectors
drm/radeon: add a delay after ATPX dGPU power off
drm/amdgpu/gmc7: add missing mullins case
drm/amdgpu: fix firmware info version checks
drm/amdgpu: Disable RPM helpers while reprobing connectors on resume
drm/amdgpu: support backlight control for UNIPHY3
drm/amdgpu: Poll for both connect/disconnect on analog connectors
drm/amdgpu: add a delay after ATPX dGPU power off
w1:omap_hdq: fix regression
netlabel: add address family checks to netlbl_{sock,req}_delattr()
ARM: dts: sunxi: Add a startup delay for fixed regulator enabled phys
audit: fix a double fetch in audit_log_single_execve_arg()
iommu/amd: Update Alias-DTE in update_device_table()
iommu/amd: Init unity mappings only for dma_ops domains
iommu/amd: Handle IOMMU_DOMAIN_DMA in ops->domain_free call-back
iommu/vt-d: Return error code in domain_context_mapping_one()
iommu/exynos: Suppress unbinding to prevent system failure
drm/i915: Don't complain about lack of ACPI video bios
nfsd: don't return an unhashed lock stateid after taking mutex
nfsd: Fix race between FREE_STATEID and LOCK
nfs: don't create zero-length requests
MIPS: KVM: Propagate kseg0/mapped tlb fault errors
MIPS: KVM: Fix gfn range check in kseg0 tlb faults
MIPS: KVM: Add missing gfn range check
MIPS: KVM: Fix mapped fault broken commpage handling
random: add interrupt callback to VMBus IRQ handler
random: print a warning for the first ten uninitialized random users
random: initialize the non-blocking pool via add_hwgenerator_randomness()
CIFS: Fix a possible invalid memory access in smb2_query_symlink()
cifs: fix crash due to race in hmac(md5) handling
cifs: Check for existing directory when opening file with O_CREAT
fs/cifs: make share unaccessible at root level mountable
jbd2: make journal y2038 safe
ARC: mm: don't loose PTE_SPECIAL in pte_modify()
remoteproc: Fix potential race condition in rproc_add
ovl: disallow overlayfs as upperdir
HID: uhid: fix timeout when probe races with IO
EDAC: Correct channel count limit
Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU
spi: pxa2xx: Clear all RFT bits in reset_sccr1() on Intel Quark
i2c: efm32: fix a failure path in efm32_i2c_probe()
s5p-mfc: Add release callback for memory region devs
s5p-mfc: Set device name for reserved memory region devs
hp-wmi: Fix wifi cannot be hard-unblocked
dm: set DMF_SUSPENDED* _before_ clearing DMF_NOFLUSH_SUSPENDING
sur40: fix occasional oopses on device close
sur40: lower poll interval to fix occasional FPS drops to ~56 FPS
Fix RC5 decoding with Fintek CIR chipset
vb2: core: Skip planes array verification if pb is NULL
videobuf2-v4l2: Verify planes array in buffer dequeueing
media: dvb_ringbuffer: Add memory barriers
media: usbtv: prevent access to free'd resources
mfd: qcom_rpm: Parametrize also ack selector size
mfd: qcom_rpm: Fix offset error for msm8660
intel_pstate: Fix MSR_CONFIG_TDP_x addressing in core_get_max_pstate()
s390/cio: allow to reset channel measurement block
KVM: nVMX: Fix memory corruption when using VMCS shadowing
KVM: VMX: handle PML full VMEXIT that occurs during event delivery
KVM: MTRR: fix kvm_mtrr_check_gfn_range_consistency page fault
KVM: PPC: Book3S HV: Save/restore TM state in H_CEDE
KVM: PPC: Book3S HV: Pull out TM state save/restore into separate procedures
arm64: mm: avoid fdt_check_header() before the FDT is fully mapped
arm64: dts: rockchip: fixes the gic400 2nd region size for rk3368
pinctrl: cherryview: prevent concurrent access to GPIO controllers
Bluetooth: hci_intel: Fix null gpio desc pointer dereference
gpio: intel-mid: Remove potentially harmful code
gpio: pca953x: Fix NBANK calculation for PCA9536
tty/serial: atmel: fix RS485 half duplex with DMA
serial: samsung: Fix ERR pointer dereference on deferred probe
tty: serial: msm: Don't read off end of tx fifo
arm64: Fix incorrect per-cpu usage for boot CPU
arm64: debug: unmask PSTATE.D earlier
arm64: kernel: Save and restore UAO and addr_limit on exception entry
USB: usbfs: fix potential infoleak in devio
usb: renesas_usbhs: fix NULL pointer dereference in xfer_work()
USB: serial: option: add support for Telit LE910 PID 0x1206
usb: dwc3: fix for the isoc transfer EP_BUSY flag
usb: quirks: Add no-lpm quirk for Elan
usb: renesas_usbhs: protect the CFIFOSEL setting in usbhsg_ep_enable()
usb: f_fs: off by one bug in _ffs_func_bind()
usb: gadget: avoid exposing kernel stack
UPSTREAM: usb: gadget: configfs: add mutex lock before unregister gadget
ANDROID: dm-verity: adopt changes made to dm callbacks
UPSTREAM: ecryptfs: fix handling of directory opening
ANDROID: net: core: fix UID-based routing
ANDROID: net: fib: remove duplicate assignment
FROMLIST: proc: Fix timerslack_ns CAP_SYS_NICE check when adjusting self
ANDROID: dm verity fec: pack the fec_header structure
ANDROID: dm: android-verity: Verify header before fetching table
ANDROID: dm: allow adb disable-verity only in userdebug
ANDROID: dm: mount as linear target if eng build
ANDROID: dm: use default verity public key
ANDROID: dm: fix signature verification flag
ANDROID: dm: use name_to_dev_t
ANDROID: dm: rename dm-linear methods for dm-android-verity
ANDROID: dm: Minor cleanup
ANDROID: dm: Mounting root as linear device when verity disabled
ANDROID: dm-android-verity: Rebase on top of 4.1
ANDROID: dm: Add android verity target
ANDROID: dm: fix dm_substitute_devices()
ANDROID: dm: Rebase on top of 4.1
CHROMIUM: dm: boot time specification of dm=
Implement memory_state_time, used by qcom,cpubw
Revert "panic: Add board ID to panic output"
usb: gadget: f_accessory: remove duplicate endpoint alloc
BACKPORT: brcmfmac: defer DPC processing during probe
FROMLIST: proc: Add LSM hook checks to /proc/<tid>/timerslack_ns
FROMLIST: proc: Relax /proc/<tid>/timerslack_ns capability requirements
UPSTREAM: ppp: defer netns reference release for ppp channel
cpuset: Add allow_attach hook for cpusets on android.
UPSTREAM: KEYS: Fix ASN.1 indefinite length object parsing
ANDROID: sdcardfs: fix itnull.cocci warnings
android-recommended.cfg: enable fstack-protector-strong
Linux 4.4.18
mm: memcontrol: fix memcg id ref counter on swap charge move
mm: memcontrol: fix swap counter leak on swapout from offline cgroup
mm: memcontrol: fix cgroup creation failure after many small jobs
ext4: fix reference counting bug on block allocation error
ext4: short-cut orphan cleanup on error
ext4: validate s_reserved_gdt_blocks on mount
ext4: don't call ext4_should_journal_data() on the journal inode
ext4: fix deadlock during page writeback
ext4: check for extents that wrap around
crypto: scatterwalk - Fix test in scatterwalk_done
crypto: gcm - Filter out async ghash if necessary
fs/dcache.c: avoid soft-lockup in dput()
fuse: fix wrong assignment of ->flags in fuse_send_init()
fuse: fuse_flush must check mapping->flags for errors
fuse: fsync() did not return IO errors
sysv, ipc: fix security-layer leaking
block: fix use-after-free in seq file
x86/syscalls/64: Add compat_sys_keyctl for 32-bit userspace
drm/i915: Pretend cursor is always on for ILK-style WM calculations (v2)
x86/mm/pat: Fix BUG_ON() in mmap_mem() on QEMU/i386
x86/pat: Document the PAT initialization sequence
x86/xen, pat: Remove PAT table init code from Xen
x86/mtrr: Fix PAT init handling when MTRR is disabled
x86/mtrr: Fix Xorg crashes in Qemu sessions
x86/mm/pat: Replace cpu_has_pat with boot_cpu_has()
x86/mm/pat: Add pat_disable() interface
x86/mm/pat: Add support of non-default PAT MSR setting
devpts: clean up interface to pty drivers
random: strengthen input validation for RNDADDTOENTCNT
apparmor: fix ref count leak when profile sha1 hash is read
Revert "s390/kdump: Clear subchannel ID to signal non-CCW/SCSI IPL"
KEYS: 64-bit MIPS needs to use compat_sys_keyctl for 32-bit userspace
arm: oabi compat: add missing access checks
cdc_ncm: do not call usbnet_link_change from cdc_ncm_bind
i2c: i801: Allow ACPI SystemIO OpRegion to conflict with PCI BAR
x86/mm/32: Enable full randomization on i386 and X86_32
HID: sony: do not bail out when the sixaxis refuses the output report
PNP: Add Broadwell to Intel MCH size workaround
PNP: Add Haswell-ULT to Intel MCH size workaround
scsi: ignore errors from scsi_dh_add_device()
ipath: Restrict use of the write() interface
tcp: consider recv buf for the initial window scale
qed: Fix setting/clearing bit in completion bitmap
net/irda: fix NULL pointer dereference on memory allocation failure
net: bgmac: Fix infinite loop in bgmac_dma_tx_add()
bonding: set carrier off for devices created through netlink
ipv4: reject RTNH_F_DEAD and RTNH_F_LINKDOWN from user space
tcp: enable per-socket rate limiting of all 'challenge acks'
tcp: make challenge acks less predictable
arm64: relocatable: suppress R_AARCH64_ABS64 relocations in vmlinux
arm64: vmlinux.lds: make __rela_offset and __dynsym_offset ABSOLUTE
Linux 4.4.17
vfs: fix deadlock in file_remove_privs() on overlayfs
intel_th: Fix a deadlock in modprobing
intel_th: pci: Add Kaby Lake PCH-H support
net: mvneta: set real interrupt per packet for tx_done
libceph: apply new_state before new_up_client on incrementals
libata: LITE-ON CX1-JB256-HP needs lower max_sectors
i2c: mux: reg: wrong condition checked for of_address_to_resource return value
posix_cpu_timer: Exit early when process has been reaped
media: fix airspy usb probe error path
ipr: Clear interrupt on croc/crocodile when running with LSI
SCSI: fix new bug in scsi_dev_info_list string matching
RDS: fix rds_tcp_init() error path
can: fix oops caused by wrong rtnl dellink usage
can: fix handling of unmodifiable configuration options fix
can: c_can: Update D_CAN TX and RX functions to 32 bit - fix Altera Cyclone access
can: at91_can: RX queue could get stuck at high bus load
perf/x86: fix PEBS issues on Intel Atom/Core2
ovl: handle ATTR_KILL*
sched/fair: Fix effective_load() to consistently use smoothed load
mmc: block: fix packed command header endianness
block: fix use-after-free in sys_ioprio_get()
qeth: delete napi struct when removing a qeth device
platform/chrome: cros_ec_dev - double fetch bug in ioctl
clk: rockchip: initialize flags of clk_init_data in mmc-phase clock
spi: sun4i: fix FIFO limit
spi: sunxi: fix transfer timeout
namespace: update event counter when umounting a deleted dentry
9p: use file_dentry()
ext4: verify extent header depth
ecryptfs: don't allow mmap when the lower fs doesn't support it
Revert "ecryptfs: forbid opening files without mmap handler"
locks: use file_inode()
power_supply: power_supply_read_temp only if use_cnt > 0
cgroup: set css->id to -1 during init
pinctrl: imx: Do not treat a PIN without MUX register as an error
pinctrl: single: Fix missing flush of posted write for a wakeirq
pvclock: Add CPU barriers to get correct version value
Input: tsc200x - report proper input_dev name
Input: xpad - validate USB endpoint count during probe
Input: wacom_w8001 - w8001_MAX_LENGTH should be 13
Input: xpad - fix oops when attaching an unknown Xbox One gamepad
Input: elantech - add more IC body types to the list
Input: vmmouse - remove port reservation
ALSA: timer: Fix leak in events via snd_timer_user_tinterrupt
ALSA: timer: Fix leak in events via snd_timer_user_ccallback
ALSA: timer: Fix leak in SNDRV_TIMER_IOCTL_PARAMS
xenbus: don't bail early from xenbus_dev_request_and_reply()
xenbus: don't BUG() on user mode induced condition
xen/pciback: Fix conf_space read/write overlap check.
ARC: unwind: ensure that .debug_frame is generated (vs. .eh_frame)
arc: unwind: warn only once if DW2_UNWIND is disabled
kernel/sysrq, watchdog, sched/core: Reset watchdog on all CPUs while processing sysrq-w
pps: do not crash when failed to register
vmlinux.lds: account for destructor sections
mm, meminit: ensure node is online before checking whether pages are uninitialised
mm, meminit: always return a valid node from early_pfn_to_nid
mm, compaction: prevent VM_BUG_ON when terminating freeing scanner
fs/nilfs2: fix potential underflow in call to crc32_le
mm, compaction: abort free scanner if split fails
mm, sl[au]b: add __GFP_ATOMIC to the GFP reclaim mask
dmaengine: at_xdmac: double FIFO flush needed to compute residue
dmaengine: at_xdmac: fix residue corruption
dmaengine: at_xdmac: align descriptors on 64 bits
x86/quirks: Add early quirk to reset Apple AirPort card
x86/quirks: Reintroduce scanning of secondary buses
x86/quirks: Apply nvidia_bugs quirk only on root bus
USB: OHCI: Don't mark EDs as ED_OPER if scheduling fails
Conflicts:
arch/arm/kernel/topology.c
arch/arm64/include/asm/arch_gicv3.h
arch/arm64/kernel/topology.c
block/bio.c
drivers/cpufreq/Kconfig
drivers/md/Makefile
drivers/media/dvb-core/dvb_ringbuffer.c
drivers/media/tuners/tuner-xc2028.c
drivers/misc/Kconfig
drivers/misc/Makefile
drivers/mmc/core/host.c
drivers/scsi/ufs/ufshcd.c
drivers/scsi/ufs/ufshcd.h
drivers/usb/dwc3/gadget.c
drivers/usb/gadget/configfs.c
fs/ecryptfs/file.c
include/linux/mmc/core.h
include/linux/mmc/host.h
include/linux/mmzone.h
include/linux/sched.h
include/linux/sched/sysctl.h
include/trace/events/power.h
include/trace/events/sched.h
init/Kconfig
kernel/cpuset.c
kernel/exit.c
kernel/sched/Makefile
kernel/sched/core.c
kernel/sched/cputime.c
kernel/sched/fair.c
kernel/sched/features.h
kernel/sched/rt.c
kernel/sched/sched.h
kernel/sched/stop_task.c
kernel/sched/tune.c
lib/Kconfig.debug
mm/Makefile
mm/vmstat.c
Change-Id: I243a43231ca56a6362076fa6301827e1b0493be5
Signed-off-by: Runmin Wang <runminw@codeaurora.org>
Introduce sched_short_burst tunable to classify "short-burst" tasks.
These tasks are eligible for packing to avoid overhead associated with
waking up an idle CPU. select_best_cpu() ignores power-cost and selects
the CPU with least wakeup latency which is not loaded with IRQs and
can accommodate this task without exceeding spill limits. The ties are
broken with load followed by previous CPU.
This policy does not affect cluster selection but only CPU selection
in the selected cluster. The tasks eligible for "wakeup-up-idle" and
"boost" are not considered for packing. This policy is applied for
both "fair" and "rt" scheduling class tasks.
Change-Id: I2a05493fde93f58636725f18d0ce8dbce4418a30
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
The recent introduction of the schedtune cgroup controller has provided
the scheduler with added flexibility in terms of some of it's placement
features. In particular each cgroup under the schedtune controller can
now specify:
1) Whether it needs co-location along with other cgroups
2) Whether it is eligible for scheduler boost (sched_boost_enabled)
3) Whether the kernel can override the boost eligibility when necessary
(sched_boost_no_override)
The scheduler now creates a reserved co-location group at boot. This
group is used to co-locate all tasks that form part of any one of the
cgroups that have co-location enabled. This reserved group can neither
be destroyed nor reused for other purposes. Furthermore, cgroups are
only allowed to indicate their co-location preference once at boot.
Further updates are disallowed.
Since we are now creating co-location groups for an extended period of
time, there are a few other factors to consider when determining the
preferred cluster for the group. We first exclude any tasks in the
group that have not been observed to be running for a significant
amount of time. Secondly we introduce the notion of group up and down
migrate tunables to allow different migration policies than individual
tasks. Lastly we break co-location if a single task in a group exceeds
up-migrate but the total load of the group does not exceed group
up-migrate.
In terms of sched_boost, the scheduler now supports multiple types of
boost. These are:
1) FULL_THROTTLE : Force up-migrate tasks belonging any cgroup that
has the sched_boost_enabled flag turned on. Little
CPUs will only be used when big CPUs can no longer
accommodate tasks. Also up-migrate all RT tasks.
2) CONSERVATIVE : Override the sched_boost_enabled flag for all cgroups
except those that have the sched_boost_no_override
flag set. Force up-migrate all tasks belonging to only
those cgroups that still remain eligible for boost.
RT tasks do not get force up migrated.
3) RESTRAINED : Start frequency aggregation for co-located tasks. This
type of boost does not force up-migrate any task.
Finally the boost API removes ref-counting. This means that there can
only be a single entity using boost at any given time. If multiple
entities are managing boost, they are required to be well behaved so
that they don't interfere with one another. Even for a single client,
it is not possible to switch directly from one boost type to another.
Boost must be first turned off before switching over to a new type.
Change-Id: I8d224a70cbef162f27078b62b73acaa22670861d
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
The previous patches in this series introduce the mechanics of CPU
load tracking without fixups for intra cluster migration and top task
load tracking. Add a tunable that dictates what of the above needs to
be considered when reporting load to the governor. The default policy
is to take the maximum of the CPU load and top task load.
Change-Id: Ie585a11ed774b929910d04c41471db3a2a102ec5
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
The current (CFS) scheduler implementation does not allow "to boost"
tasks performance by running them at a higher OPP compared to the
minimum required to meet their workload demands.
To support tasks performance boosting the scheduler should provide a
"knob" which allows to tune how much the system is going to be optimised
for energy efficiency vs performance.
This patch is the first of a series which provides a simple interface to
define a tuning knob. One system-wide "boost" tunable is exposed via:
/proc/sys/kernel/sched_cfs_boost
which can be configured in the range [0..100], to define a percentage
where:
- 0% boost requires to operate in "standard" mode by scheduling
tasks at the minimum capacities required by the workload demand
- 100% boost requires to push at maximum the task performances,
"regardless" of the incurred energy consumption
A boost value in between these two boundaries is used to bias the
power/performance trade-off, the higher the boost value the more the
scheduler is biased toward performance boosting instead of energy
efficiency.
Change-Id: I59a41725e2d8f9238a61dfb0c909071b53560fc0
cc: Ingo Molnar <mingo@redhat.com>
cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
Git-commit: 63c8fad2b06805ef88f1220551289f0a3c3529f1
Git-repo: https://source.codeaurora.org/quic/la/kernel/msm-4.4
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>
The current policy has a preference to select an idle CPU in the waker
cluster compared to the waker CPU running only 1 task. By selecting
an idle CPU, it eliminates the chance of waker migrating to a
different CPU after the wakee preempts it. This policy is also not
susceptible to the incorrect "sync" usage i.e the waker does not
goto sleep after waking up the wakee.
However LPM exit latency associated with an idle CPU outweigh the
above benefits on some targets. So add a knob to prefer the waker
CPU having only 1 runnable task over idle CPUs in the waker cluster.
Change-Id: Id974748c07625c1b19112235f426a5d204dfdb33
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
use a window based view of time in order to track task
demand and CPU utilization in the scheduler.
Window Assisted Load Tracking (WALT) implementation credits:
Srivatsa Vaddagiri, Steve Muckle, Syed Rameez Mustafa, Joonwoo Park,
Pavan Kumar Kondeti, Olav Haugan
2016-03-06: Integration with EAS/refactoring by Vikram Mulukutla
and Todd Kjos
Change-Id: I21408236836625d4e7d7de1843d20ed5ff36c708
Includes fixes for issues:
eas/walt: Use walt_ktime_clock() instead of ktime_get_ns() to avoid a
race resulting in watchdog resets
BUG: 29353986
Change-Id: Ic1820e22a136f7c7ebd6f42e15f14d470f6bbbdb
Handle walt accounting anomoly during resume
During resume, there is a corner case where on wakeup, a task's
prev_runnable_sum can go negative. This is a workaround that
fixes the condition and warns (instead of crashing).
BUG: 29464099
Change-Id: I173e7874324b31a3584435530281708145773508
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Srinath Sridharan <srinathsr@google.com>
Signed-off-by: Juri Lelli <juri.lelli@arm.com>
[jstultz: fwdported to 4.4]
Signed-off-by: John Stultz <john.stultz@linaro.org>
The choice of initial task load upon fork has a large influence
on CPU and OPP selection when scheduler-driven DVFS is in use.
Make this tuneable by adding a new sysctl "sched_initial_task_util".
If the sched governor is not used, the default remains at SCHED_LOAD_SCALE
Otherwise, the value from the sysctl is used. This defaults to 0.
Signed-off-by: "Todd Kjos <tkjos@google.com>"
EAS assumes that clusters with smaller capacity cores are more
energy-efficient. This may not be true on non-big-little devices,
so EAS can make incorrect cluster selections when finding a CPU
to wake. The "sched_is_big_little" hint can be used to cause a
cpu-based selection instead of cluster-based selection.
This change incorporates the addition of the sync hint enable patch
EAS did not honour synchronous wakeup hints, a new sysctl is
created to ask EAS to use this information when selecting a CPU.
The control is called "sched_sync_hint_enable".
Also contains:
EAS: sched/fair: for SMP bias toward idle core with capacity
For SMP devices, on wakeup bias towards idle cores that have capacity
vs busy devices that need a higher OPP
eas: favor idle cpus for boosted tasks
BUG: 29533997
BUG: 29512132
Change-Id: I0cc9a1b1b88fb52916f18bf2d25715bdc3634f9c
Signed-off-by: Juri Lelli <juri.lelli@arm.com>
Signed-off-by: Srinath Sridharan <srinathsr@google.com>
eas/sched/fair: Favoring busy cpus with low OPPs
BUG: 29533997
BUG: 29512132
Change-Id: I9305b3239698d64278db715a2e277ea0bb4ece79
Signed-off-by: Juri Lelli <juri.lelli@arm.com>
Introduce a new sysctl for this option, 'sched_cstate_aware'.
When this is enabled, select_idle_sibling in CFS is modified to
choose the idle CPU in the sibling group which has the lowest
idle state index - idle state indexes are assumed to increase
as sleep depth and hence wakeup latency increase. In this way,
we attempt to minimise wakeup latency when an idle CPU is
required.
Signed-off-by: Srinath Sridharan <srinathsr@google.com>
Includes:
sched: EAS: fix select_idle_sibling
when sysctl_sched_cstate_aware is enabled, best_idle cpu will not be chosen
in the original flow because it will goto done directly
Bug: 30107557
Change-Id: Ie09c2e3960cafbb976f8d472747faefab3b4d6ac
Signed-off-by: martin_liu <martin_liu@htc.com>
The current (CFS) scheduler implementation does not allow "to boost"
tasks performance by running them at a higher OPP compared to the
minimum required to meet their workload demands.
To support tasks performance boosting the scheduler should provide a
"knob" which allows to tune how much the system is going to be optimised
for energy efficiency vs performance.
This patch is the first of a series which provides a simple interface to
define a tuning knob. One system-wide "boost" tunable is exposed via:
/proc/sys/kernel/sched_cfs_boost
which can be configured in the range [0..100], to define a percentage
where:
- 0% boost requires to operate in "standard" mode by scheduling
tasks at the minimum capacities required by the workload demand
- 100% boost requires to push at maximum the task performances,
"regardless" of the incurred energy consumption
A boost value in between these two boundaries is used to bias the
power/performance trade-off, the higher the boost value the more the
scheduler is biased toward performance boosting instead of energy
efficiency.
cc: Ingo Molnar <mingo@redhat.com>
cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
Do the aggregation for frequency only when the total group busy time
is above sched_freq_aggregate_threshold. This filtering is especially
needed for the cases where groups are created by including all threads
of an application process. This knob can be tuned to apply aggregation
only for the heavy workload applications.
When this knob is enabled and load is aggregated, the load is not
clipped to 100% @ current frequency to ramp up the frequency faster.
Change-Id: Icfd91c85938def101a989af3597d3dcaa8026d16
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
When sysctl_sched_enable_thread_grouping is set to 1, any new tasks
created are put in the same group as their group leader.
Change-Id: If1837dd7c8120c8b097cfffa1dc52eb4781f1641
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
CONFIG_SCHED_FREQ_INPUT was created to keep parts of the scheduler
dealing with frequency separate from other parts of the scheduler
that deal with task placement. However, overtime the two features
have become intricately linked whereby SCHED_FREQ_INPUT cannot be
turned on without having SCHED_HMP turned on as well. Given this
complex inter-dependency and the fact that all old, existing and
future targets use both config options, remove this unnecessary
feature separation. It will aid in making kernel upgrades a lot
simpler and faster.
Change-Id: Ia20e40d8a088d50909cc28f5be758fa3e9a4af6f
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
Migration notifiers were created to aid the CPU-boost driver manage
CPU frequencies when tasks migrate from one CPU to another. Over time
with the evolution of scheduler guided frequency, the scheduler now
directly manages load when tasks migrate. Consequently the CPU-boost
driver no longer makes use of this information. Remove unused code
pertaining to this feature.
Change-Id: I3529e4356e15e342a5fcfbcf3654396752a1d7cd
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
use a window based view of time in order to track task
demand and CPU utilization in the scheduler.
Window Assisted Load Tracking (WALT) implementation credits:
Srivatsa Vaddagiri, Steve Muckle, Syed Rameez Mustafa, Joonwoo Park,
Pavan Kumar Kondeti, Olav Haugan
2016-03-06: Integration with EAS/refactoring by Vikram Mulukutla
and Todd Kjos
Change-Id: I21408236836625d4e7d7de1843d20ed5ff36c708
Includes fixes for issues:
eas/walt: Use walt_ktime_clock() instead of ktime_get_ns() to avoid a
race resulting in watchdog resets
BUG: 29353986
Change-Id: Ic1820e22a136f7c7ebd6f42e15f14d470f6bbbdb
Handle walt accounting anomoly during resume
During resume, there is a corner case where on wakeup, a task's
prev_runnable_sum can go negative. This is a workaround that
fixes the condition and warns (instead of crashing).
BUG: 29464099
Change-Id: I173e7874324b31a3584435530281708145773508
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Srinath Sridharan <srinathsr@google.com>
Signed-off-by: Juri Lelli <juri.lelli@arm.com>
[jstultz: fwdported to 4.4]
Signed-off-by: John Stultz <john.stultz@linaro.org>
The choice of initial task load upon fork has a large influence
on CPU and OPP selection when scheduler-driven DVFS is in use.
Make this tuneable by adding a new sysctl "sched_initial_task_util".
If the sched governor is not used, the default remains at SCHED_LOAD_SCALE
Otherwise, the value from the sysctl is used. This defaults to 0.
Signed-off-by: "Todd Kjos <tkjos@google.com>"
EAS assumes that clusters with smaller capacity cores are more
energy-efficient. This may not be true on non-big-little devices,
so EAS can make incorrect cluster selections when finding a CPU
to wake. The "sched_is_big_little" hint can be used to cause a
cpu-based selection instead of cluster-based selection.
This change incorporates the addition of the sync hint enable patch
EAS did not honour synchronous wakeup hints, a new sysctl is
created to ask EAS to use this information when selecting a CPU.
The control is called "sched_sync_hint_enable".
Also contains:
EAS: sched/fair: for SMP bias toward idle core with capacity
For SMP devices, on wakeup bias towards idle cores that have capacity
vs busy devices that need a higher OPP
eas: favor idle cpus for boosted tasks
BUG: 29533997
BUG: 29512132
Change-Id: I0cc9a1b1b88fb52916f18bf2d25715bdc3634f9c
Signed-off-by: Juri Lelli <juri.lelli@arm.com>
Signed-off-by: Srinath Sridharan <srinathsr@google.com>
eas/sched/fair: Favoring busy cpus with low OPPs
BUG: 29533997
BUG: 29512132
Change-Id: I9305b3239698d64278db715a2e277ea0bb4ece79
Signed-off-by: Juri Lelli <juri.lelli@arm.com>
Introduce a new sysctl for this option, 'sched_cstate_aware'.
When this is enabled, select_idle_sibling in CFS is modified to
choose the idle CPU in the sibling group which has the lowest
idle state index - idle state indexes are assumed to increase
as sleep depth and hence wakeup latency increase. In this way,
we attempt to minimise wakeup latency when an idle CPU is
required.
Signed-off-by: Srinath Sridharan <srinathsr@google.com>
Includes:
sched: EAS: fix select_idle_sibling
when sysctl_sched_cstate_aware is enabled, best_idle cpu will not be chosen
in the original flow because it will goto done directly
Bug: 30107557
Change-Id: Ie09c2e3960cafbb976f8d472747faefab3b4d6ac
Signed-off-by: martin_liu <martin_liu@htc.com>
This reverts commit 8f90803a45 ("sched: warn/panic upon excessive
scheduling latency") as this feature is no longer used.
Change-Id: I200d0e9e8dad5047522cd02a68de25d4a70a91a4
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
This reverts commit b40bf941f6 ("sched: add scheduling latency
tracking procfs node") as this feature is no longer used.
Change-Id: I5de789b6349e6ea78ae3725af2a3ffa72b7b7f11
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
This has always been unused feature given its limitation of adding
phantom load to the system. Since there are no immediate plans of
using this and the fact that it adds unnecessary complications to
the new load fixup mechanism, remove this feature for now. It can
be revisited later in light of the new mechanism.
Change-Id: Ie9501a898d0f423338293a8dde6bc56f493f1e75
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Kill unused scheduler knob sched_migration_fixup. With this change
scheduler always adjusts CPU's busy time during migration.
Change-Id: I5d59e89d5cc0f2c705c40036cd7b47f5d3f89e58
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Kill unused scheduler knob and parameter sched_enable_power_aware. HMP
scheduler always take into account power cost for placing task.
Change-Id: Ib26a21df9b903baac26c026862b0a41b4a8834f3
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Kill unused scheduler knob sched_account_wait_time. With this change
scheduler always accounts task's wait time into demand.
Change-Id: Ifa4bcb5685798f48fd020f3d0c9853220b3f5fdc
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Related threads in a group could execute on different CPUs and hence
present a split-demand picture to cpufreq governor. IOW the governor
fails to see the net cpu demand of all related threads in a given
window if the threads's execution were to be split across CPUs. That
could result in sub-optimal frequency chosen in comparison to the
ideal frequency at which the aggregate work (taken up by related
threads) needs to be run.
This patch aggregates cpu execution stats in a window for all related
threads in a group. This helps present cpu busy time to governor as if
all related threads were part of the same thread and thus help select
the right frequency required by related threads. This aggregation
is done per-cluster.
Change-Id: I71e6047620066323721c6d542034ddd4b2950e7f
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
[joonwoop@codeaurora.org: Fixed notify_migration() to hold rcu read
lock as this version of Linux doesn't hold p->pi_lock when the
function gets called while keeping use of rcu_access_pointer() since
we never dereference return value.]
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
The current (CFS) scheduler implementation does not allow "to boost"
tasks performance by running them at a higher OPP compared to the
minimum required to meet their workload demands.
To support tasks performance boosting the scheduler should provide a
"knob" which allows to tune how much the system is going to be optimised
for energy efficiency vs performance.
This patch is the first of a series which provides a simple interface to
define a tuning knob. One system-wide "boost" tunable is exposed via:
/proc/sys/kernel/sched_cfs_boost
which can be configured in the range [0..100], to define a percentage
where:
- 0% boost requires to operate in "standard" mode by scheduling
tasks at the minimum capacities required by the workload demand
- 100% boost requires to push at maximum the task performances,
"regardless" of the incurred energy consumption
A boost value in between these two boundaries is used to bias the
power/performance trade-off, the higher the boost value the more the
scheduler is biased toward performance boosting instead of energy
efficiency.
cc: Ingo Molnar <mingo@redhat.com>
cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
Biasing sync wakee task towards waker CPU's cluster makes sense when the
waker's demand is high enough so the wakee also can take advantage
of high CPU frequency voted because of waker's load. Placing sync wakee
on the low demand waker's CPU can lead placement imbalance which can
lead unnecessary migration.
Introduce a new tunable "sched_big_waker_task_load" that defines the big
waker so scheduler avoid wakee on waker's cluster bias when the waker's
load is below the tunable.
CRs-fixed: 971295
Change-Id: I1550ede0a71ac8c9be74a7daabe164c6a269a3fb
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
[joonwoop@codeaurora.org: fixed a minor conflict in
include/linux/sched/sysctl.h.]
If sync wakee task's demand is small it's worth to place the wakee task
on waker's cluster for better performance in the sense that waker and
wakee are corelated so the wakee should take advantage of waker cluster's
frequency which is voted by the waker along with cache locality benefit.
While biasing towards the waker's cluster we want to avoid the waker CPU
as much as possible as placing the wakee on the waker's CPU can make the
waker got preempted and migrated by load balancer.
Introduce a new tunable 'sched_small_wakee_task_load' that differentiates
eligible small wakee task and place the small wakee tasks on the waker's
cluster.
CRs-fixed: 971295
Change-Id: I96897d9a72a6f63dca4986d9219c2058cd5a7916
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
[joonwoop@codeaurora.org: fixed a minor conflict in
include/linux/sched/sysctl.h.]
Current window based load tracking only saves history for five
windows. A historically heavy task's heavy load will be completely
forgotten after five windows of light load. Even before the five
window expires, a heavy task wakes up on same CPU it used to run won't
trigger any frequency change until end of the window. It would starve
for the entire window. It also adds one "small" load window to
history because it's accumulating load at a low frequency, further
reducing the tracked load for this heavy task.
Ideally, scheduler should be able to identify such tasks and notify
governor to increase frequency immediately after it wakes up.
Add a histogram for each task to track a much longer load history. A
prediction will be made based on runtime of previous or current
window, histogram data and load tracked in recent windows. Prediction
of all tasks that is currently running or runnable on a CPU is
aggregated and reported to CPUFreq governor in sched_get_cpus_busy().
sched_get_cpus_busy() now returns predicted busy time in addition
to previous window busy time and new task busy time, scaled to
the CPU maximum possible frequency.
Tunables:
- /proc/sys/kernel/sched_gov_alert_freq (KHz)
This tunable can be used to further filter the notifications.
Frequency alert notification is sent only when the predicted
load exceeds previous window load by sched_gov_alert_freq converted to
load.
Change-Id: If29098cd2c5499163ceaff18668639db76ee8504
Suggested-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
[joonwoop@codeaurora.org: fixed merge conflicts around __migrate_task()
and removed changes for CONFIG_SCHED_QHMP.]
The frequency based inter cluster load balance restrictions are not
reliable as frequency does not provide a good estimate of the CPU's
current load. Replace them with the spill_load and spill_nr_run
based checks.
The higher capacity cluster is restricted from pulling the tasks from
the lower capacity cluster unless all of the lower capacity CPUs are
above spill. This behavior can be controlled by a sysctl tunable and
it is disabled by default (i.e. no load balance restrictions).
Change-Id: I45c09c8adcb61a8a7d4e08beadf2f97f1805fb42
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
[joonwoop@codeaurora.org: fixed merge conflicts due to omitted changes
for CONFIG_SCHED_QHMP.]
Provide userspace interface for tasks to be grouped together as
"related" threads. For example, all threads involved in updating
display buffer could be tagged as related.
Scheduler will attempt to provide special treatment for group of
related threads such as:
1) Colocation of related threads in same "preferred" cluster
2) Aggregation of demand towards determination of cluster frequency
This patch extends scheduler to provide best-effort colocation support
for a group of related threads.
Change-Id: Ic2cd769faf5da4d03a8f3cb0ada6224d0101a5f5
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
[joonwoop@codeaurora.org: fixed minor merge conflicts. removed ifdefry
for CONFIG_SCHED_QHMP.]
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Make use of clusters in the fair and rt scheduling classes. This is
needed as the freq domain mask can no longer be used to do correct
task placement. The freq domain mask was being used to demarcate
clusters.
Change-Id: I57f74147c7006f22d6760256926c10fd0bf50cbd
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
[joonwoop@codeaurora.org: fixed merge conflicts due to omitted changes
for CONFIG_SCHED_QHMP.]
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Select given task's prev_cpu when the task slept for short period to
reduce latency of task placement and migrations. A new tunable
/proc/sys/kernel/sched_select_prev_cpu_us introduced to determine whether
tasks are eligible to go through fast path.
CRs-fixed: 947467
Change-Id: Ia507665b91f4e9f0e6ee1448d8df8994ead9739a
[joonwoop@codeaurora.org: fixed conflict in include/linux/sched.h,
include/linux/sched/sysctl.h, kernel/sched/core.c and kernel/sysctl.c]
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
