70f98fe87ab5b332fa6308ae9f05da170d65e9f6
86 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Prasad Sodagudi
|
c96a62baf3 |
Revert "cpuidle: Fix cpu frequent exits from low power mode"
This reverts 'commit
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Prasad Sodagudi
|
ae04811d41 |
cpuidle: Fix cpu frequent exits from low power mode
Following upstream changes are reverted due cpu low power mode use cases regressions. 'commit |
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Isaac J. Manjarres
|
b2c8463039 |
Merge android-4.14-p.61 (b7e55e8) into msm-4.14
* remotes/origin/tmp-b7e55e8:
Linux 4.14.61
scsi: sg: fix minor memory leak in error path
drm/vc4: Reset ->{x, y}_scaling[1] when dealing with uniplanar formats
crypto: padlock-aes - Fix Nano workaround data corruption
RDMA/uverbs: Expand primary and alt AV port checks
iwlwifi: add more card IDs for 9000 series
userfaultfd: remove uffd flags from vma->vm_flags if UFFD_EVENT_FORK fails
audit: fix potential null dereference 'context->module.name'
kvm: x86: vmx: fix vpid leak
x86/entry/64: Remove %ebx handling from error_entry/exit
x86/apic: Future-proof the TSC_DEADLINE quirk for SKX
virtio_balloon: fix another race between migration and ballooning
net: socket: fix potential spectre v1 gadget in socketcall
can: ems_usb: Fix memory leak on ems_usb_disconnect()
squashfs: more metadata hardenings
squashfs: more metadata hardening
net/mlx5e: E-Switch, Initialize eswitch only if eswitch manager
rxrpc: Fix user call ID check in rxrpc_service_prealloc_one
net: stmmac: Fix WoL for PCI-based setups
netlink: Fix spectre v1 gadget in netlink_create()
net: dsa: Do not suspend/resume closed slave_dev
ipv4: frags: handle possible skb truesize change
inet: frag: enforce memory limits earlier
bonding: avoid lockdep confusion in bond_get_stats()
Linux 4.14.60
tcp: add one more quick ack after after ECN events
tcp: refactor tcp_ecn_check_ce to remove sk type cast
tcp: do not aggressively quick ack after ECN events
tcp: add max_quickacks param to tcp_incr_quickack and tcp_enter_quickack_mode
tcp: do not force quickack when receiving out-of-order packets
netlink: Don't shift with UB on nlk->ngroups
netlink: Do not subscribe to non-existent groups
xen-netfront: wait xenbus state change when load module manually
tcp_bbr: fix bw probing to raise in-flight data for very small BDPs
NET: stmmac: align DMA stuff to largest cache line length
net: mdio-mux: bcm-iproc: fix wrong getter and setter pair
net: lan78xx: fix rx handling before first packet is send
net: fix amd-xgbe flow-control issue
net: ena: Fix use of uninitialized DMA address bits field
ipv4: remove BUG_ON() from fib_compute_spec_dst
net: dsa: qca8k: Allow overwriting CPU port setting
net: dsa: qca8k: Add QCA8334 binding documentation
net: dsa: qca8k: Enable RXMAC when bringing up a port
net: dsa: qca8k: Force CPU port to its highest bandwidth
RDMA/uverbs: Protect from attempts to create flows on unsupported QP
usb: gadget: udc: renesas_usb3: should remove debugfs
ovl: Sync upper dirty data when syncing overlayfs
PCI: xgene: Remove leftover pci_scan_child_bus() call
PCI: pciehp: Assume NoCompl+ for Thunderbolt ports
ext4: fix check to prevent initializing reserved inodes
ext4: check for allocation block validity with block group locked
ext4: fix inline data updates with checksums enabled
squashfs: be more careful about metadata corruption
random: mix rdrand with entropy sent in from userspace
block: reset bi_iter.bi_done after splitting bio
blkdev: __blkdev_direct_IO_simple: fix leak in error case
block: bio_iov_iter_get_pages: fix size of last iovec
drm/dp/mst: Fix off-by-one typo when dump payload table
drm/atomic-helper: Drop plane->fb references only for drm_atomic_helper_shutdown()
drm: Add DP PSR2 sink enable bit
ASoC: topology: Add missing clock gating parameter when parsing hw_configs
ASoC: topology: Fix bclk and fsync inversion in set_link_hw_format()
media: si470x: fix __be16 annotations
media: atomisp: compat32: fix __user annotations
scsi: cxlflash: Avoid clobbering context control register value
scsi: cxlflash: Synchronize reset and remove ops
scsi: megaraid_sas: Increase timeout by 1 sec for non-RAID fastpath IOs
scsi: scsi_dh: replace too broad "TP9" string with the exact models
regulator: Don't return or expect -errno from of_map_mode()
media: omap3isp: fix unbalanced dma_iommu_mapping
crypto: authenc - don't leak pointers to authenc keys
crypto: authencesn - don't leak pointers to authenc keys
usb: hub: Don't wait for connect state at resume for powered-off ports
microblaze: Fix simpleImage format generation
soc: imx: gpcv2: Do not pass static memory as platform data
serial: core: Make sure compiler barfs for 16-byte earlycon names
staging: lustre: ldlm: free resource when ldlm_lock_create() fails.
staging: lustre: llite: correct removexattr detection
staging: vchiq_core: Fix missing semaphore release in error case
audit: allow not equal op for audit by executable
rsi: fix nommu_map_sg overflow kernel panic
rsi: Fix 'invalid vdd' warning in mmc
ipconfig: Correctly initialise ic_nameservers
drm/gma500: fix psb_intel_lvds_mode_valid()'s return type
igb: Fix queue selection on MAC filters on i210
arm64: defconfig: Enable Rockchip io-domain driver
nvme: lightnvm: add granby support
memory: tegra: Apply interrupts mask per SoC
memory: tegra: Do not handle spurious interrupts
delayacct: Use raw_spinlocks
stop_machine: Use raw spinlocks
backlight: pwm_bl: Don't use GPIOF_* with gpiod_get_direction
dt-bindings: net: meson-dwmac: new compatible name for AXG SoC
net: hns3: Fixes the out of bounds access in hclge_map_tqp
spi: meson-spicc: Fix error handling in meson_spicc_probe()
dt-bindings: pinctrl: meson: add support for the Meson8m2 SoC
mmc: pwrseq: Use kmalloc_array instead of stack VLA
mmc: dw_mmc: update actual clock for mmc debugfs
ALSA: hda/ca0132: fix build failure when a local macro is defined
drm/atomic: Handling the case when setting old crtc for plane
media: siano: get rid of __le32/__le16 cast warnings
f2fs: avoid fsync() failure caused by EAGAIN in writepage()
bpf: fix references to free_bpf_prog_info() in comments
thermal: exynos: fix setting rising_threshold for Exynos5433
staging: lustre: o2iblnd: Fix FastReg map/unmap for MLX5
staging: lustre: o2iblnd: fix race at kiblnd_connect_peer
scsi: qedf: Set the UNLOADING flag when removing a vport
scsi: hisi_sas: config ATA de-reset as an constrained command for v3 hw
scsi: megaraid: silence a static checker bug
scsi: 3w-xxxx: fix a missing-check bug
scsi: 3w-9xxx: fix a missing-check bug
bnxt_en: Check unsupported speeds in bnxt_update_link() on PF only.
perf: fix invalid bit in diagnostic entry
s390/cpum_sf: Add data entry sizes to sampling trailer entry
brcmfmac: Add support for bcm43364 wireless chipset
mtd: rawnand: fsl_ifc: fix FSL NAND driver to read all ONFI parameter pages
media: saa7164: Fix driver name in debug output
media: media-device: fix ioctl function types
ACPI / LPSS: Only call pwm_add_table() for Bay Trail PWM if PMIC HRV is 2
libata: Fix command retry decision
media: rcar_jpu: Add missing clk_disable_unprepare() on error in jpu_open()
net: phy: phylink: Release link GPIO
dma-iommu: Fix compilation when !CONFIG_IOMMU_DMA
tty: Fix data race in tty_insert_flip_string_fixed_flag
i40e: free the skb after clearing the bitlock
nvmem: properly handle returned value nvmem_reg_read
ARM: dts: sh73a0: Add missing interrupt-affinity to PMU node
ARM: dts: emev2: Add missing interrupt-affinity to PMU node
ARM: dts: stih407-pinctrl: Fix complain about IRQ_TYPE_NONE usage
EDAC, altera: Fix ARM64 build warning
HID: i2c-hid: check if device is there before really probing
powerpc/embedded6xx/hlwd-pic: Prevent interrupts from being handled by Starlet
drm/amdgpu: Remove VRAM from shared bo domains.
drm/radeon: fix mode_valid's return type
arm64: dts: renesas: salvator-common: use audio-graph-card for Sound
HID: hid-plantronics: Re-resend Update to map button for PTT products
arm64: cmpwait: Clear event register before arming exclusive monitor
media: atomisp: ov2680: don't declare unused vars
ALSA: usb-audio: Apply rate limit to warning messages in URB complete callback
net: ethernet: ti: cpsw-phy-sel: check bus_find_device() ret value
media: smiapp: fix timeout checking in smiapp_read_nvm
ixgbevf: fix MAC address changes through ixgbevf_set_mac()
md: fix NULL dereference of mddev->pers in remove_and_add_spares()
md/raid1: add error handling of read error from FailFast device
regulator: pfuze100: add .is_enable() for pfuze100_swb_regulator_ops
ALSA: emu10k1: Rate-limit error messages about page errors
rtc: tps65910: fix possible race condition
rtc: vr41xx: fix possible race condition
rtc: tps6586x: fix possible race condition
Bluetooth: btusb: add ID for LiteOn 04ca:301a
drm/nouveau/fifo/gk104-: poll for runlist update completion
scsi: zfcp: assert that the ERP lock is held when tracing a recovery trigger
scsi: ufs: fix exception event handling
scsi: ufs: ufshcd: fix possible unclocked register access
fscrypt: use unbound workqueue for decryption
net: hns3: Fix the missing client list node initialization
spi: Add missing pm_runtime_put_noidle() after failed get
drivers/perf: arm-ccn: don't log to dmesg in event_init
ima: based on policy verify firmware signatures (pre-allocated buffer)
mwifiex: correct histogram data with appropriate index
net: dsa: qca8k: Add support for QCA8334 switch
PCI: pciehp: Request control of native hotplug only if supported
bpf: powerpc64: pad function address loads with NOPs
pinctrl: at91-pio4: add missing of_node_put
powerpc/8xx: fix invalid register expression in head_8xx.S
spi: sh-msiof: Fix setting SIRMDR1.SYNCAC to match SITMDR1.SYNCAC
powerpc: Add __printf verification to prom_printf
powerpc/powermac: Mark variable x as unused
powerpc/powermac: Add missing prototype for note_bootable_part()
powerpc/chrp/time: Make some functions static, add missing header include
powerpc/32: Add a missing include header
ath: Add regulatory mapping for Bahamas
ath: Add regulatory mapping for Bermuda
ath: Add regulatory mapping for Serbia
ath: Add regulatory mapping for Tanzania
ath: Add regulatory mapping for Uganda
ath: Add regulatory mapping for APL2_FCCA
ath: Add regulatory mapping for APL13_WORLD
ath: Add regulatory mapping for ETSI8_WORLD
ath: Add regulatory mapping for FCC3_ETSIC
nvme-pci: Fix AER reset handling
nvme-rdma: stop admin queue before freeing it
PCI: Prevent sysfs disable of device while driver is attached
PM / wakeup: Make s2idle_lock a RAW_SPINLOCK
x86/microcode: Make the late update update_lock a raw lock for RT
btrfs: qgroup: Finish rescan when hit the last leaf of extent tree
btrfs: add barriers to btrfs_sync_log before log_commit_wait wakeups
Btrfs: don't BUG_ON() in btrfs_truncate_inode_items()
Btrfs: don't return ino to ino cache if inode item removal fails
media: videobuf2-core: don't call memop 'finish' when queueing
media: tw686x: Fix incorrect vb2_mem_ops GFP flags
net: hns3: Fixes the init of the VALID BD info in the descriptor
wlcore: sdio: check for valid platform device data before suspend
mwifiex: handle race during mwifiex_usb_disconnect
mfd: cros_ec: Fail early if we cannot identify the EC
ASoC: dpcm: fix BE dai not hw_free and shutdown
Bluetooth: btusb: Add a new Realtek 8723DE ID 2ff8:b011
Bluetooth: hci_qca: Fix "Sleep inside atomic section" warning
iwlwifi: pcie: fix race in Rx buffer allocator
btrfs: balance dirty metadata pages in btrfs_finish_ordered_io
PCI: Fix devm_pci_alloc_host_bridge() memory leak
selftests: intel_pstate: return Kselftest Skip code for skipped tests
selftests: memfd: return Kselftest Skip code for skipped tests
selftests/intel_pstate: Improve test, minor fixes
perf/x86/intel/uncore: Correct fixed counter index check for NHM
perf/x86/intel/uncore: Correct fixed counter index check in generic code
usbip: dynamically allocate idev by nports found in sysfs
usbip: usbip_detach: Fix memory, udev context and udev leak
block, bfq: remove wrong lock in bfq_requests_merged
f2fs: fix race in between GC and atomic open
f2fs: fix to detect failure of dquot_initialize
f2fs: Fix deadlock in shutdown ioctl
f2fs: fix to wait page writeback during revoking atomic write
f2fs: fix to don't trigger writeback during recovery
f2fs: fix error path of move_data_page
disable loading f2fs module on PAGE_SIZE > 4KB
pnfs: Don't release the sequence slot until we've processed layoutget on open
netfilter: nf_tables: check msg_type before nft_trans_set(trans)
lightnvm: pblk: warn in case of corrupted write buffer
RDMA/mad: Convert BUG_ONs to error flows
powerpc/64s: Fix compiler store ordering to SLB shadow area
hvc_opal: don't set tb_ticks_per_usec in udbg_init_opal_common()
powerpc/eeh: Fix use-after-release of EEH driver
powerpc/64s: Add barrier_nospec
powerpc/lib: Adjust .balign inside string functions for PPC32
infiniband: fix a possible use-after-free bug
e1000e: Ignore TSYNCRXCTL when getting I219 clock attributes
ceph: fix alignment of rasize
bpf, arm32: fix inconsistent naming about emit_a32_lsr_{r64,i64}
printk: drop in_nmi check from printk_safe_flush_on_panic()
watchdog: da9063: Fix updating timeout value
irqchip/ls-scfg-msi: Map MSIs in the iommu
netfilter: ipset: List timing out entries with "timeout 1" instead of zero
netfilter: ipset: forbid family for hash:mac sets
perf tools: Fix pmu events parsing rule
rtc: ensure rtc_set_alarm fails when alarms are not supported
mm/slub.c: add __printf verification to slab_err()
mm: vmalloc: avoid racy handling of debugobjects in vunmap
mm: /proc/pid/pagemap: hide swap entries from unprivileged users
kernel/hung_task.c: show all hung tasks before panic
vfio/type1: Fix task tracking for QEMU vCPU hotplug
vfio/mdev: Check globally for duplicate devices
vfio: platform: Fix reset module leak in error path
nfsd: fix potential use-after-free in nfsd4_decode_getdeviceinfo
NFSv4.1: Fix the client behaviour on NFS4ERR_SEQ_FALSE_RETRY
ALSA: fm801: add error handling for snd_ctl_add
ALSA: emu10k1: add error handling for snd_ctl_add
skip LAYOUTRETURN if layout is invalid
hv_netvsc: fix network namespace issues with VF support
xen/netfront: raise max number of slots in xennet_get_responses()
kcov: ensure irq code sees a valid area
mlxsw: spectrum_switchdev: Fix port_vlan refcounting
arm64: fix vmemmap BUILD_BUG_ON() triggering on !vmemmap setups
tracing: Quiet gcc warning about maybe unused link variable
tracing/kprobes: Fix trace_probe flags on enable_trace_kprobe() failure
kthread, tracing: Don't expose half-written comm when creating kthreads
tracing: Fix possible double free in event_enable_trigger_func()
tracing: Fix double free of event_trigger_data
delayacct: fix crash in delayacct_blkio_end() after delayacct init failure
kvm, mm: account shadow page tables to kmemcg
Input: elan_i2c - add another ACPI ID for Lenovo Ideapad 330-15AST
Input: i8042 - add Lenovo LaVie Z to the i8042 reset list
Input: elan_i2c - add ACPI ID for lenovo ideapad 330
spi: spi-s3c64xx: Fix system resume support
drivers/infiniband/ulp/srpt/ib_srpt.c: fix build with gcc-4.4.4
IB/srpt: Fix an out-of-bounds stack access in srpt_zerolength_write()
drivers/infiniband/core/verbs.c: fix build with gcc-4.4.4
RDMA/core: Avoid that ib_drain_qp() triggers an out-of-bounds stack access
i2c: core: decrease reference count of device node in i2c_unregister_device
fork: unconditionally clear stack on fork
Linux 4.14.59
turn off -Wattribute-alias
can: m_can.c: fix setup of CCCR register: clear CCCR NISO bit before checking can.ctrlmode
can: peak_canfd: fix firmware < v3.3.0: limit allocation to 32-bit DMA addr only
can: xilinx_can: fix RX overflow interrupt not being enabled
can: xilinx_can: fix incorrect clear of non-processed interrupts
can: xilinx_can: keep only 1-2 frames in TX FIFO to fix TX accounting
can: xilinx_can: fix device dropping off bus on RX overrun
can: xilinx_can: fix recovery from error states not being propagated
can: xilinx_can: fix power management handling
can: xilinx_can: fix RX loop if RXNEMP is asserted without RXOK
driver core: Partially revert "driver core: correct device's shutdown order"
usb: gadget: f_fs: Only return delayed status when len is 0
usb: dwc2: Fix DMA alignment to start at allocated boundary
usb: core: handle hub C_PORT_OVER_CURRENT condition
usb: cdc_acm: Add quirk for Castles VEGA3000
staging: speakup: fix wraparound in uaccess length check
tcp: add tcp_ooo_try_coalesce() helper
tcp: call tcp_drop() from tcp_data_queue_ofo()
tcp: detect malicious patterns in tcp_collapse_ofo_queue()
tcp: avoid collapses in tcp_prune_queue() if possible
tcp: free batches of packets in tcp_prune_ofo_queue()
tcp: do not delay ACK in DCTCP upon CE status change
tcp: do not cancel delay-AcK on DCTCP special ACK
tcp: helpers to send special DCTCP ack
tcp: fix dctcp delayed ACK schedule
vxlan: fix default fdb entry netlink notify ordering during netdev create
vxlan: make netlink notify in vxlan_fdb_destroy optional
vxlan: add new fdb alloc and create helpers
rtnetlink: add rtnl_link_state check in rtnl_configure_link
sock: fix sg page frag coalescing in sk_alloc_sg
net: phy: consider PHY_IGNORE_INTERRUPT in phy_start_aneg_priv
multicast: do not restore deleted record source filter mode to new one
net/ipv6: Fix linklocal to global address with VRF
net/mlx5e: Fix quota counting in aRFS expire flow
net/mlx5e: Don't allow aRFS for encapsulated packets
net/mlx5: Adjust clock overflow work period
net: skb_segment() should not return NULL
net/mlx4_core: Save the qpn from the input modifier in RST2INIT wrapper
ip: in cmsg IP(V6)_ORIGDSTADDR call pskb_may_pull
ip: hash fragments consistently
bonding: set default miimon value for non-arp modes if not set
drm/nouveau: Set DRIVER_ATOMIC cap earlier to fix debugfs
drm/nouveau/drm/nouveau: Fix runtime PM leak in nv50_disp_atomic_commit()
KVM: PPC: Check if IOMMU page is contained in the pinned physical page
xen/PVH: Set up GS segment for stack canary
MIPS: Fix off-by-one in pci_resource_to_user()
MIPS: ath79: fix register address in ath79_ddr_wb_flush()
Revert "cifs: Fix slab-out-of-bounds in send_set_info() on SMB2 ACE setting"
ANDROID: verity: really fix android-verity Kconfig
tcp: add tcp_ooo_try_coalesce() helper
tcp: call tcp_drop() from tcp_data_queue_ofo()
tcp: detect malicious patterns in tcp_collapse_ofo_queue()
tcp: avoid collapses in tcp_prune_queue() if possible
tcp: free batches of packets in tcp_prune_ofo_queue()
x86_64_cuttlefish_defconfig: Enable android-verity
x86_64_cuttlefish_defconfig: enable verity cert
ANDROID: android-verity: Fix broken parameter handling.
ANDROID: android-verity: Make it work with newer kernels
ANDROID: android-verity: Add API to verify signature with builtin keys.
ANDROID: verity: fix android-verity Kconfig dependencies
Linux 4.14.58
xhci: Fix perceived dead host due to runtime suspend race with event handler
powerpc/powernv: Fix save/restore of SPRG3 on entry/exit from stop (idle)
cxl_getfile(): fix double-iput() on alloc_file() failures
alpha: fix osf_wait4() breakage
net: usb: asix: replace mii_nway_restart in resume path
ipv6: make DAD fail with enhanced DAD when nonce length differs
net: systemport: Fix CRC forwarding check for SYSTEMPORT Lite
net/mlx4_en: Don't reuse RX page when XDP is set
hv_netvsc: Fix napi reschedule while receive completion is busy
tg3: Add higher cpu clock for 5762.
qmi_wwan: add support for Quectel EG91
ptp: fix missing break in switch
net: phy: fix flag masking in __set_phy_supported
net/ipv4: Set oif in fib_compute_spec_dst
skbuff: Unconditionally copy pfmemalloc in __skb_clone()
net: Don't copy pfmemalloc flag in __copy_skb_header()
net: diag: Don't double-free TCP_NEW_SYN_RECV sockets in tcp_abort
lib/rhashtable: consider param->min_size when setting initial table size
ipv6: ila: select CONFIG_DST_CACHE
ipv6: fix useless rol32 call on hash
ipv4: Return EINVAL when ping_group_range sysctl doesn't map to user ns
gen_stats: Fix netlink stats dumping in the presence of padding
drm/nouveau: Avoid looping through fake MST connectors
drm/nouveau: Use drm_connector_list_iter_* for iterating connectors
drm/i915: Fix hotplug irq ack on i965/g4x
stop_machine: Disable preemption when waking two stopper threads
vfio/spapr: Use IOMMU pageshift rather than pagesize
vfio/pci: Fix potential Spectre v1
cpufreq: intel_pstate: Register when ACPI PCCH is present
mm/huge_memory.c: fix data loss when splitting a file pmd
mm: memcg: fix use after free in mem_cgroup_iter()
ARC: mm: allow mprotect to make stack mappings executable
ARC: configs: Remove CONFIG_INITRAMFS_SOURCE from defconfigs
ARC: Fix CONFIG_SWAP
ARCv2: [plat-hsdk]: Save accl reg pair by default
ALSA: hda: add mute led support for HP ProBook 455 G5
ALSA: hda/realtek - Add Panasonic CF-SZ6 headset jack quirk
ALSA: rawmidi: Change resized buffers atomically
fat: fix memory allocation failure handling of match_strdup()
x86/MCE: Remove min interval polling limitation
x86/events/intel/ds: Fix bts_interrupt_threshold alignment
x86/apm: Don't access __preempt_count with zeroed fs
KVM/Eventfd: Avoid crash when assign and deassign specific eventfd in parallel.
scsi: sd_zbc: Fix variable type and bogus comment
ANDROID: uid_sys_stats: Replace tasklist lock with RCU in uid_cputime_show
Linux 4.14.57
string: drop __must_check from strscpy() and restore strscpy() usages in cgroup
arm64: KVM: Add ARCH_WORKAROUND_2 discovery through ARCH_FEATURES_FUNC_ID
arm64: KVM: Handle guest's ARCH_WORKAROUND_2 requests
arm64: KVM: Add ARCH_WORKAROUND_2 support for guests
arm64: KVM: Add HYP per-cpu accessors
arm64: ssbd: Add prctl interface for per-thread mitigation
arm64: ssbd: Introduce thread flag to control userspace mitigation
arm64: ssbd: Restore mitigation status on CPU resume
arm64: ssbd: Skip apply_ssbd if not using dynamic mitigation
arm64: ssbd: Add global mitigation state accessor
arm64: Add 'ssbd' command-line option
arm64: Add ARCH_WORKAROUND_2 probing
arm64: Add per-cpu infrastructure to call ARCH_WORKAROUND_2
arm64: Call ARCH_WORKAROUND_2 on transitions between EL0 and EL1
arm/arm64: smccc: Add SMCCC-specific return codes
KVM: arm64: Avoid storing the vcpu pointer on the stack
KVM: arm/arm64: Do not use kern_hyp_va() with kvm_vgic_global_state
arm64: alternatives: Add dynamic patching feature
KVM: arm64: Stop save/restoring host tpidr_el1 on VHE
arm64: alternatives: use tpidr_el2 on VHE hosts
KVM: arm64: Change hyp_panic()s dependency on tpidr_el2
KVM: arm/arm64: Convert kvm_host_cpu_state to a static per-cpu allocation
KVM: arm64: Store vcpu on the stack during __guest_enter()
net/nfc: Avoid stalls when nfc_alloc_send_skb() returned NULL.
rds: avoid unenecessary cong_update in loop transport
bdi: Fix another oops in wb_workfn()
netfilter: ipv6: nf_defrag: drop skb dst before queueing
nsh: set mac len based on inner packet
autofs: fix slab out of bounds read in getname_kernel()
tls: Stricter error checking in zerocopy sendmsg path
KEYS: DNS: fix parsing multiple options
reiserfs: fix buffer overflow with long warning messages
netfilter: ebtables: reject non-bridge targets
PCI: hv: Disable/enable IRQs rather than BH in hv_compose_msi_msg()
block: do not use interruptible wait anywhere
mtd: rawnand: denali_dt: set clk_x_rate to 200 MHz unconditionally
crypto: af_alg - Initialize sg_num_bytes in error code path
clocksource: Initialize cs->wd_list
media: rc: oops in ir_timer_keyup after device unplug
xhci: Fix USB3 NULL pointer dereference at logical disconnect.
net: lan78xx: Fix race in tx pending skb size calculation
rtlwifi: rtl8821ae: fix firmware is not ready to run
rtlwifi: Fix kernel Oops "Fw download fail!!"
net: cxgb3_main: fix potential Spectre v1
VSOCK: fix loopback on big-endian systems
vhost_net: validate sock before trying to put its fd
tcp: prevent bogus FRTO undos with non-SACK flows
tcp: fix Fast Open key endianness
strparser: Remove early eaten to fix full tcp receive buffer stall
stmmac: fix DMA channel hang in half-duplex mode
r8152: napi hangup fix after disconnect
qmi_wwan: add support for the Dell Wireless 5821e module
qed: Limit msix vectors in kdump kernel to the minimum required count.
qed: Fix use of incorrect size in memcpy call.
qed: Fix setting of incorrect eswitch mode.
qede: Adverstise software timestamp caps when PHC is not available.
net/tcp: Fix socket lookups with SO_BINDTODEVICE
net: sungem: fix rx checksum support
net_sched: blackhole: tell upper qdisc about dropped packets
net/packet: fix use-after-free
net: mvneta: fix the Rx desc DMA address in the Rx path
net/mlx5: Fix wrong size allocation for QoS ETC TC regitster
net/mlx5: Fix required capability for manipulating MPFS
net/mlx5: Fix incorrect raw command length parsing
net/mlx5: Fix command interface race in polling mode
net/mlx5: E-Switch, Avoid setup attempt if not being e-switch manager
net/mlx5e: Don't attempt to dereference the ppriv struct if not being eswitch manager
net/mlx5e: Avoid dealing with vport representors if not being e-switch manager
net: macb: Fix ptp time adjustment for large negative delta
net: fix use-after-free in GRO with ESP
net: dccp: switch rx_tstamp_last_feedback to monotonic clock
net: dccp: avoid crash in ccid3_hc_rx_send_feedback()
ixgbe: split XDP_TX tail and XDP_REDIRECT map flushing
ipvlan: fix IFLA_MTU ignored on NEWLINK
ipv6: sr: fix passing wrong flags to crypto_alloc_shash()
hv_netvsc: split sub-channel setup into async and sync
atm: zatm: Fix potential Spectre v1
atm: Preserve value of skb->truesize when accounting to vcc
alx: take rtnl before calling __alx_open from resume
crypto: crypto4xx - fix crypto4xx_build_pdr, crypto4xx_build_sdr leak
crypto: crypto4xx - remove bad list_del
PCI: exynos: Fix a potential init_clk_resources NULL pointer dereference
bcm63xx_enet: do not write to random DMA channel on BCM6345
bcm63xx_enet: correct clock usage
ocfs2: ip_alloc_sem should be taken in ocfs2_get_block()
ocfs2: subsystem.su_mutex is required while accessing the item->ci_parent
xprtrdma: Fix corner cases when handling device removal
cpufreq / CPPC: Set platform specific transition_delay_us
Btrfs: fix duplicate extents after fsync of file with prealloc extents
x86/paravirt: Make native_save_fl() extern inline
x86/asm: Add _ASM_ARG* constants for argument registers to <asm/asm.h>
compiler-gcc.h: Add __attribute__((gnu_inline)) to all inline declarations
ANDROID: Add hold functionality to schedtune CPU boost
ANDROID: sched/rt: Add schedtune accounting to rt task enqueue/dequeue
UPSTREAM: cpuidle: menu: Avoid selecting shallow states with stopped tick
UPSTREAM: cpuidle: menu: Refine idle state selection for running tick
UPSTREAM: sched: idle: Select idle state before stopping the tick
BACKPORT: time: hrtimer: Introduce hrtimer_next_event_without()
BACKPORT: time: tick-sched: Split tick_nohz_stop_sched_tick()
UPSTREAM: cpuidle: Return nohz hint from cpuidle_select()
UPSTREAM: jiffies: Introduce USER_TICK_USEC and redefine TICK_USEC
UPSTREAM: sched: idle: Do not stop the tick before cpuidle_idle_call()
BACKPORT: sched: idle: Do not stop the tick upfront in the idle loop
BACKPORT: time: tick-sched: Reorganize idle tick management code
ANDROID: sched/fair: fix a warning
ANDROID: sched/walt: Fix compilation issue for x86_64
ANDROID: mnt: Fix next_descendent
ANDROID: sched/events: Introduce util_est trace events
ANDROID: sched/fair: schedtune: update before schedutil
FROMLIST: sched/fair: add support to tune PELT ramp/decay timings
BACKPORT: sched/fair: Update util_est before updating schedutil
BACKPORT: sched/fair: Update util_est only on util_avg updates
BACKPORT: sched/fair: Use util_est in LB and WU paths
BACKPORT: sched/fair: Add util_est on top of PELT
ANDROID: sched/fair: Cleanup cpu_util{_wake}()
ANDROID: sched: Update max cpu capacity in case of max frequency constraints
ANDROID: arm: enable max frequency capping
ANDROID: arm64: enable max frequency capping
ANDROID: implement max frequency capping
ANDROID: sched/fair: add arch scaling function for max frequency capping
ANDROID: trace: Add WALT util signal to trace event sched_load_cfs_rq
ANDROID: sched, trace: Remove trace event sched_load_avg_cpu
ANDROID: Rename and move include/linux/sched_energy.h
ANDROID: Adjust juno energy model
ANDROID: Check equality of max cap state cap and cpu scale
ANDROID: Move energy model init call into arch_topology driver
ANDROID: Streamline sched_domain_energy_f functions
ANDROID: Separate cpu_scale and energy model setup
ANDROID: update_group_capacity for single cpu in cluster
ANDROID: sched/fair: return idle CPU immediately for prefer_idle
ANDROID: sched/fair: add idle state filter to prefer_idle case
ANDROID: sched/fair: remove order from CPU selection
ANDROID: sched/fair: unify spare capacity calculation
ANDROID:sched/fair: prefer energy efficient CPUs for !prefer_idle tasks
ANDROID: sched/fair: fix CPU selection for non latency sensitive tasks
ANDROID: sched/fair: Also do misfit in overloaded groups
ANDROID: sched/fair: Don't balance misfits if it would overload local group
ANDROID: sched/fair: Attempt to improve throughput for asym cap systems
FROMLIST: sched/fair: Don't move tasks to lower capacity cpus unless necessary
FROMLIST: sched/core: Disable SD_PREFER_SIBLING on asymmetric cpu capacity domains
FROMLIST: sched/core: Disable SD_ASYM_CPUCAPACITY for root_domains without asymmetry
FROMLIST: sched/fair: Set rq->rd->overload when misfit
FROMLIST: sched: Wrap rq->rd->overload accesses with READ/WRITE_ONCE
FROMLIST: sched: Change root_domain->overload type to int
FROMLIST: sched/fair: Change prefer_sibling type to bool
FROMLIST: sched/fair: Consider misfit tasks when load-balancing
FROMLIST: sched: Add sched_group per-cpu max capacity
FROMLIST: sched/fair: Add group_misfit_task load-balance type
FROMLIST: sched: Add static_key for asymmetric cpu capacity optimizations
UPSTREAM: ANDROID: binder: change down_write to down_read
UPSTREAM: ANDROID: binder: correct the cmd print for BINDER_WORK_RETURN_ERROR
UPSTREAM: ANDROID: binder: remove 32-bit binder interface.
UPSTREAM: android: binder: Use true and false for boolean values
UPSTREAM: android: binder: Use octal permissions
UPSTREAM: android: binder: Prefer __func__ to using hardcoded function name
UPSTREAM: ANDROID: binder: make binder_alloc_new_buf_locked static and indent its arguments
UPSTREAM: android: binder: Check for errors in binder_alloc_shrinker_init().
Conflicts:
arch/arm64/Kconfig
arch/arm64/include/asm/cpucaps.h
arch/arm64/include/asm/cpufeature.h
arch/arm64/include/asm/thread_info.h
arch/arm64/kernel/cpu_errata.c
arch/arm64/kernel/cpufeature.c
arch/arm64/kernel/entry.S
arch/arm64/kernel/ssbd.c
drivers/base/arch_topology.c
drivers/md/Kconfig
drivers/scsi/ufs/ufshcd.c
drivers/usb/gadget/function/f_fs.c
include/trace/events/sched.h
kernel/sched/cpufreq_schedutil.c
kernel/sched/energy.c
kernel/sched/fair.c
kernel/sched/features.h
kernel/sched/sched.h
kernel/sched/topology.c
kernel/sched/tune.c
kernel/sched/walt.c
kernel/sched/walt.h
kernel/stop_machine.c
kernel/time/tick-sched.c
net/socket.c
sound/core/rawmidi.c
Change-Id: Ia246711317930ecd55bb42565a04e6b4fdfc26d2
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>
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Rafael J. Wysocki
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30693a4f09 |
UPSTREAM: cpuidle: menu: Refine idle state selection for running tick
If the tick isn't stopped, the target residency of the state selected by the menu governor may be greater than the actual time to the next tick and that means lost energy. To avoid that, make tick_nohz_get_sleep_length() return the current time to the next event (before stopping the tick) in addition to the estimated one via an extra pointer argument and make menu_select() use that value to refine the state selection when necessary. Cherry-picked from 296bb1e51a4838a6488ec5ce676607093482ecbc Change-Id: I6c3b4227817231f437da0879d1ca401522ef3a70 Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Todd Kjos <tkjos@google.com> Cc: Joel Fernandes <joelaf@google.com> Cc: Paven Kondati <pkondeti@qti.qualcomm.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> |
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Rafael J. Wysocki
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8c71f69fb4 |
UPSTREAM: sched: idle: Select idle state before stopping the tick
In order to address the issue with short idle duration predictions by the idle governor after the scheduler tick has been stopped, reorder the code in cpuidle_idle_call() so that the governor idle state selection runs before tick_nohz_idle_go_idle() and use the "nohz" hint returned by cpuidle_select() to decide whether or not to stop the tick. This isn't straightforward, because menu_select() invokes tick_nohz_get_sleep_length() to get the time to the next timer event and the number returned by the latter comes from __tick_nohz_idle_stop_tick(). Fortunately, however, it is possible to compute that number without actually stopping the tick and with the help of the existing code. Namely, tick_nohz_get_sleep_length() can be made call tick_nohz_next_event(), introduced earlier, to get the time to the next non-highres timer event. If that happens, tick_nohz_next_event() need not be called by __tick_nohz_idle_stop_tick() again. If it turns out that the scheduler tick cannot be stopped going forward or the next timer event is too close for the tick to be stopped, tick_nohz_get_sleep_length() can simply return the time to the next event currently programmed into the corresponding clock event device. In addition to knowing the return value of tick_nohz_next_event(), however, tick_nohz_get_sleep_length() needs to know the time to the next highres timer event, but with the scheduler tick timer excluded, which can be computed with the help of hrtimer_get_next_event(). That minimum of that number and the tick_nohz_next_event() return value is the total time to the next timer event with the assumption that the tick will be stopped. It can be returned to the idle governor which can use it for predicting idle duration (under the assumption that the tick will be stopped) and deciding whether or not it makes sense to stop the tick before putting the CPU into the selected idle state. With the above, the sleep_length field in struct tick_sched is not necessary any more, so drop it. Cherry-picked from 554c8aa8ecade210d58a252173bb8f2106552a44 Change-Id: I11bbd473ccb00cf89105f97a3861d56459cc8377 Link: https://bugzilla.kernel.org/show_bug.cgi?id=199227 Reported-by: Doug Smythies <dsmythies@telus.net> Reported-by: Thomas Ilsche <thomas.ilsche@tu-dresden.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Todd Kjos <tkjos@google.com> Cc: Joel Fernandes <joelaf@google.com> Cc: Paven Kondati <pkondeti@qti.qualcomm.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> |
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Rafael J. Wysocki
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3a25735bd7 |
UPSTREAM: cpuidle: Return nohz hint from cpuidle_select()
Add a new pointer argument to cpuidle_select() and to the ->select
cpuidle governor callback to allow a boolean value indicating
whether or not the tick should be stopped before entering the
selected state to be returned from there.
Make the ladder governor ignore that pointer (to preserve its
current behavior) and make the menu governor return 'false" through
it if:
(1) the idle exit latency is constrained at 0, or
(2) the selected state is a polling one, or
(3) the expected idle period duration is within the tick period
range.
In addition to that, the correction factor computations in the menu
governor need to take the possibility that the tick may not be
stopped into account to avoid artificially small correction factor
values. To that end, add a mechanism to record tick wakeups, as
suggested by Peter Zijlstra, and use it to modify the menu_update()
behavior when tick wakeup occurs. Namely, if the CPU is woken up by
the tick and the return value of tick_nohz_get_sleep_length() is not
within the tick boundary, the predicted idle duration is likely too
short, so make menu_update() try to compensate for that by updating
the governor statistics as though the CPU was idle for a long time.
Since the value returned through the new argument pointer of
cpuidle_select() is not used by its caller yet, this change by
itself is not expected to alter the functionality of the code.
Cherry-picked from 45f1ff59e27ca59d33cc1a317e669d90022ccf7d
Change-Id: I3737f2fd00e308d0becba33cc3b1db727241e2a4
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Todd Kjos <tkjos@google.com>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Paven Kondati <pkondeti@qti.qualcomm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
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Rafael J. Wysocki
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f6d3093dfc |
BACKPORT: sched: idle: Do not stop the tick upfront in the idle loop
Push the decision whether or not to stop the tick somewhat deeper into the idle loop. Stopping the tick upfront leads to unpleasant outcomes in case the idle governor doesn't agree with the nohz code on the duration of the upcoming idle period. Specifically, if the tick has been stopped and the idle governor predicts short idle, the situation is bad regardless of whether or not the prediction is accurate. If it is accurate, the tick has been stopped unnecessarily which means excessive overhead. If it is not accurate, the CPU is likely to spend too much time in the (shallow, because short idle has been predicted) idle state selected by the governor [1]. As the first step towards addressing this problem, change the code to make the tick stopping decision inside of the loop in do_idle(). In particular, do not stop the tick in the cpu_idle_poll() code path. Also don't do that in tick_nohz_irq_exit() which doesn't really have enough information on whether or not to stop the tick. Cherry-picked from 2aaf709a518d26563b80fd7a42379d7aa7ffed4a - Fixed conflict with tick_nohz_stopped_cpu not appearing in the chunk context. Trivial fix. Change-Id: Ie316e210971f28aae80dd0f35c5564cb17a81901 Link: https://marc.info/?l=linux-pm&m=150116085925208&w=2 # [1] Link: https://tu-dresden.de/zih/forschung/ressourcen/dateien/projekte/haec/powernightmares.pdf Suggested-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Todd Kjos <tkjos@google.com> Cc: Joel Fernandes <joelaf@google.com> Cc: Paven Kondati <pkondeti@qti.qualcomm.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> |
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Rafael J. Wysocki
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55e591cc18 |
BACKPORT: time: tick-sched: Reorganize idle tick management code
Prepare the scheduler tick code for reworking the idle loop to avoid stopping the tick in some cases. The idea is to split the nohz idle entry call to decouple the idle time stats accounting and preparatory work from the actual tick stop code, in order to later be able to delay the tick stop once we reach more power-knowledgeable callers. Move away the tick_nohz_start_idle() invocation from __tick_nohz_idle_enter(), rename the latter to __tick_nohz_idle_stop_tick() and define tick_nohz_idle_stop_tick() as a wrapper around it for calling it from the outside. Make tick_nohz_idle_enter() only call tick_nohz_start_idle() instead of calling the entire __tick_nohz_idle_enter(), add another wrapper disabling and enabling interrupts around tick_nohz_idle_stop_tick() and make the current callers of tick_nohz_idle_enter() call it too to retain their current functionality. Cherry-picked from 0e7767687fdabfc58d5046e7488632bf2ecd4d0c - Fixed conflict with hrtimer_next_event_base which does not have an extra parameter in the backported code Change-Id: Iae3b22cdc0db13212af07249b085b4b97abf557e Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Todd Kjos <tkjos@google.com> Cc: Joel Fernandes <joelaf@google.com> Cc: Paven Kondati <pkondeti@qti.qualcomm.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> |
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Olav Haugan
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17e12d32da |
sched/tick: Ensure timers does not get queued on isolated cpus
Timers should not be queued on isolated cpus. Instead try to find other cpus to queue timer on. Change-Id: I7a1a8aade8630226d7349cc37afd1a3abe48fc67 Signed-off-by: Olav Haugan <ohaugan@codeaurora.org> Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org> |
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Runmin Wang
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5682ea9f33 |
Merge remote-tracking branch 'remotes/origin/tmp-9189141' into msm-4.14
* remotes/origin/tmp-9189141: Linux 4.14.13 KVM: s390: prevent buffer overrun on memory hotplug during migration KVM: s390: fix cmma migration for multiple memory slots mtd: nand: pxa3xx: Fix READOOB implementation parisc: qemu idle sleep support parisc: Fix alignment of pa_tlb_lock in assembly on 32-bit SMP kernel apparmor: fix regression in mount mediation when feature set is pinned x86/microcode/AMD: Add support for fam17h microcode loading Input: elantech - add new icbody type 15 powerpc/mm: Fix SEGV on mapped region to return SEGV_ACCERR ARC: uaccess: dont use "l" gcc inline asm constraint modifier iommu/arm-smmu-v3: Cope with duplicated Stream IDs iommu/arm-smmu-v3: Don't free page table ops twice kernel/signal.c: remove the no longer needed SIGNAL_UNKILLABLE check in complete_signal() kernel/signal.c: protect the SIGNAL_UNKILLABLE tasks from !sig_kernel_only() signals kernel/signal.c: protect the traced SIGNAL_UNKILLABLE tasks from SIGKILL x86 / CPU: Always show current CPU frequency in /proc/cpuinfo x86 / CPU: Avoid unnecessary IPIs in arch_freq_get_on_cpu() fscache: Fix the default for fscache_maybe_release_page() sunxi-rsb: Include OF based modalias in device uevent drm/i915: Apply Display WA #1183 on skl, kbl, and cfl drm/i915: Disable DC states around GMBUS on GLK crypto: chelsio - select CRYPTO_GF128MUL crypto: pcrypt - fix freeing pcrypt instances crypto: chacha20poly1305 - validate the digest size crypto: n2 - cure use after free efi/capsule-loader: Reinstate virtual capsule mapping btrfs: fix refcount_t usage when deleting btrfs_delayed_nodes userfaultfd: clear the vma->vm_userfaultfd_ctx if UFFD_EVENT_FORK fails mm/sparse.c: wrong allocation for mem_section mm/mprotect: add a cond_resched() inside change_pmd_range() kernel/acct.c: fix the acct->needcheck check in check_free_space() x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN x86/alternatives: Add missing '\n' at end of ALTERNATIVE inline asm x86/tlb: Drop the _GPL from the cpu_tlbstate export x86/events/intel/ds: Use the proper cache flush method for mapping ds buffers x86/kaslr: Fix the vaddr_end mess x86/mm: Map cpu_entry_area at the same place on 4/5 level x86/mm: Set MODULES_END to 0xffffffffff000000 ANDROID: netfilter: xt_qtaguid: Fix 4.14 compilation ANDROID: Squashfs: optimize reading uncompressed data ANDROID: Squashfs: implement .readpages() ANDROID: Squashfs: replace buffer_head with BIO ANDROID: Squashfs: refactor page_actor ANDROID: usb: f_fs: Prevent gadget unbind if it is already unbound Linux 4.14.12 rtc: m41t80: remove unneeded checks from m41t80_sqw_set_rate rtc: m41t80: avoid i2c read in m41t80_sqw_is_prepared rtc: m41t80: avoid i2c read in m41t80_sqw_recalc_rate rtc: m41t80: fix m41t80_sqw_round_rate return value rtc: m41t80: m41t80_sqw_set_rate should return 0 on success Revert "xfrm: Fix stack-out-of-bounds read in xfrm_state_find." x86/process: Define cpu_tss_rw in same section as declaration x86/pti: Switch to kernel CR3 at early in entry_SYSCALL_compat() x86/dumpstack: Print registers for first stack frame x86/dumpstack: Fix partial register dumps x86/pti: Make sure the user/kernel PTEs match x86/cpu, x86/pti: Do not enable PTI on AMD processors capabilities: fix buffer overread on very short xattr exec: Weaken dumpability for secureexec Linux 4.14.11 tty: fix tty_ldisc_receive_buf() documentation n_tty: fix EXTPROC vs ICANON interaction with TIOCINQ (aka FIONREAD) x86/ldt: Make LDT pgtable free conditional x86/ldt: Plug memory leak in error path x86/espfix/64: Fix espfix double-fault handling on 5-level systems x86-32: Fix kexec with stack canary (CONFIG_CC_STACKPROTECTOR) x86/mm: Remove preempt_disable/enable() from __native_flush_tlb() x86/smpboot: Remove stale TLB flush invocations nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick() staging: android: ion: Fix dma direction for dma_sync_sg_for_cpu/device drivers: base: cacheinfo: fix cache type for non-architected system cache phy: tegra: fix device-tree node lookups binder: fix proc->files use-after-free timers: Reinitialize per cpu bases on hotplug timers: Invoke timer_start_debug() where it makes sense timers: Use deferrable base independent of base::nohz_active usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201 USB: Fix off by one in type-specific length check of BOS SSP capability usb: add RESET_RESUME for ELSA MicroLink 56K usb: Add device quirk for Logitech HD Pro Webcam C925e USB: serial: option: adding support for YUGA CLM920-NC5 USB: serial: option: add support for Telit ME910 PID 0x1101 USB: serial: qcserial: add Sierra Wireless EM7565 USB: serial: ftdi_sio: add id for Airbus DS P8GR USB: chipidea: msm: fix ulpi-node lookup usbip: vhci: stop printing kernel pointer addresses in messages usbip: stub: stop printing kernel pointer addresses in messages usbip: prevent leaking socket pointer address in messages usbip: fix usbip bind writing random string after command in match_busid sparc64: repair calling incorrect hweight function from stubs skbuff: in skb_copy_ubufs unclone before releasing zerocopy skbuff: skb_copy_ubufs must release uarg even without user frags skbuff: orphan frags before zerocopy clone Revert "mlx5: move affinity hints assignments to generic code" ipv6: set all.accept_dad to 0 by default ipv4: fib: Fix metrics match when deleting a route phylink: ensure AN is enabled phylink: ensure the PHY interface mode is appropriately set bnxt_en: Fix sources of spurious netpoll warnings net: sched: fix static key imbalance in case of ingress/clsact_init error vxlan: restore dev->mtu setting based on lower device net/mlx5: FPGA, return -EINVAL if size is zero tcp: refresh tcp_mstamp from timers callbacks ipv6: Honor specified parameters in fibmatch lookup net: phy: marvell: Limit 88m1101 autoneg errata to 88E1145 as well. tcp: fix potential underestimation on rcv_rtt mlxsw: spectrum: Disable MAC learning for ovs port tipc: fix hanging poll() for stream sockets sctp: make sure stream nums can match optlen in sctp_setsockopt_reset_streams s390/qeth: fix error handling in checksum cmd callback net: dsa: bcm_sf2: Clear IDDQ_GLOBAL_PWR bit for PHY sfc: pass valid pointers from efx_enqueue_unwind openvswitch: Fix pop_vlan action for double tagged frames net/mlx5: Fix error flow in CREATE_QP command net/mlx5e: Prevent possible races in VXLAN control flow net/mlx5e: Add refcount to VXLAN structure net/mlx5e: Fix features check of IPv6 traffic net/mlx5e: Fix possible deadlock of VXLAN lock net/mlx5: Fix rate limit packet pacing naming and struct tcp: invalidate rate samples during SACK reneging sock: free skb in skb_complete_tx_timestamp on error net: phy: micrel: ksz9031: reconfigure autoneg after phy autoneg workaround net: Fix double free and memory corruption in get_net_ns_by_id() net: bridge: fix early call to br_stp_change_bridge_id and plug newlink leaks ipv4: Fix use-after-free when flushing FIB tables ip6_gre: fix device features for ioctl setup adding missing rcu_read_unlock in ipxip6_rcv sctp: Replace use of sockets_allocated with specified macro. net: mvmdio: disable/unprepare clocks in EPROBE_DEFER case net: ipv4: fix for a race condition in raw_sendmsg s390/qeth: update takeover IPs after configuration change s390/qeth: lock IP table while applying takeover changes s390/qeth: don't apply takeover changes to RXIP s390/qeth: apply takeover changes when mode is toggled tcp_bbr: reset long-term bandwidth sampling on loss recovery undo tcp_bbr: reset full pipe detection on loss recovery undo tg3: Fix rx hang on MTU change with 5717/5719 tcp md5sig: Use skb's saddr when replying to an incoming segment tcp_bbr: record "full bw reached" decision in new full_bw_reached bit RDS: Check cmsg_len before dereferencing CMSG_DATA ptr_ring: add barriers net: reevalulate autoflowlabel setting after sysctl setting net: qmi_wwan: add Sierra EM7565 1199:9091 netlink: Add netns check on taps net: igmp: Use correct source address on IGMPv3 reports net: fec: unmap the xmit buffer that are not transferred by DMA ipv6: mcast: better catch silly mtu values ipv4: igmp: guard against silly MTU values kbuild: add '-fno-stack-check' to kernel build options block: don't let passthrough IO go into .make_request_fn() block: fix blk_rq_append_bio cpufreq: schedutil: Use idle_calls counter of the remote CPU ALSA: hda - Fix missing COEF init for ALC225/295/299 ALSA: hda - fix headset mic detection issue on a Dell machine ALSA: hda - change the location for one mic on a Lenovo machine ALSA: hda - Add MIC_NO_PRESENCE fixup for 2 HP machines ALSA: hda: Drop useless WARN_ON() IB/core: Verify that QP is security enabled in create and destroy IB/uverbs: Fix command checking as part of ib_uverbs_ex_modify_qp() IB/mlx5: Serialize access to the VMA list IB/hfi: Only read capability registers if the capability exists gpio: fix "gpio-line-names" property retrieval ASoC: tlv320aic31xx: Fix GPIO1 register definition ASoC: twl4030: fix child-node lookup ASoC: fsl_ssi: AC'97 ops need regmap, clock and cleaning up on failure ASoC: da7218: fix fix child-node lookup ASoC: wm_adsp: Fix validation of firmware and coeff lengths ASoC: codecs: msm8916-wcd: Fix supported formats iw_cxgb4: Only validate the MSN for successful completions ring-buffer: Do no reuse reader page if still in use ring-buffer: Mask out the info bits when returning buffer page length x86/ldt: Make the LDT mapping RO x86/mm/dump_pagetables: Allow dumping current pagetables x86/mm/dump_pagetables: Check user space page table for WX pages x86/mm/dump_pagetables: Add page table directory to the debugfs VFS hierarchy x86/mm/pti: Add Kconfig x86/dumpstack: Indicate in Oops whether PTI is configured and enabled x86/mm: Clarify the whole ASID/kernel PCID/user PCID naming x86/mm: Use INVPCID for __native_flush_tlb_single() x86/mm: Optimize RESTORE_CR3 x86/mm: Use/Fix PCID to optimize user/kernel switches x86/mm: Abstract switching CR3 x86/mm: Allow flushing for future ASID switches x86/pti: Map the vsyscall page if needed x86/pti: Put the LDT in its own PGD if PTI is on x86/mm/64: Make a full PGD-entry size hole in the memory map x86/events/intel/ds: Map debug buffers in cpu_entry_area x86/cpu_entry_area: Add debugstore entries to cpu_entry_area x86/mm/pti: Map ESPFIX into user space x86/mm/pti: Share entry text PMD x86/entry: Align entry text section to PMD boundary x86/mm/pti: Share cpu_entry_area with user space page tables x86/mm/pti: Force entry through trampoline when PTI active x86/mm/pti: Add functions to clone kernel PMDs x86/mm/pti: Populate user PGD x86/mm/pti: Allocate a separate user PGD x86/mm/pti: Allow NX poison to be set in p4d/pgd x86/mm/pti: Add mapping helper functions x86/pti: Add the pti= cmdline option and documentation x86/mm/pti: Add infrastructure for page table isolation x86/mm/pti: Prepare the x86/entry assembly code for entry/exit CR3 switching x86/mm/pti: Disable global pages if PAGE_TABLE_ISOLATION=y x86/cpufeatures: Add X86_BUG_CPU_INSECURE tracing: Fix crash when it fails to alloc ring buffer tracing: Fix possible double free on failure of allocating trace buffer tracing: Remove extra zeroing out of the ring buffer page Conflicts: drivers/staging/android/ion/ion.c kernel/time/timer.c Change-Id: Ia5b16c96ab44e640e2f10ab535c4c672b670cbdc Signed-off-by: Runmin Wang <runminw@codeaurora.org> |
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|
Joel Fernandes
|
0c688c288f |
cpufreq: schedutil: Use idle_calls counter of the remote CPU
commit 466a2b42d67644447a1765276259a3ea5531ddff upstream.
Since the recent remote cpufreq callback work, its possible that a cpufreq
update is triggered from a remote CPU. For single policies however, the current
code uses the local CPU when trying to determine if the remote sg_cpu entered
idle or is busy. This is incorrect. To remedy this, compare with the nohz tick
idle_calls counter of the remote CPU.
Fixes:
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Mahesh Sivasubramanian
|
f024061b16 |
kernel: tick-sched: Add API to get the next wakeup for a CPU
Add get_next_event_cpu to get the next wakeup time for the CPU. This is used by the sleep driver if it has to query the next wakeup for a CPU other than the thread that its running on. Change-Id: I889de90928b9b1e51a51b2f9205d7865facfcc20 Signed-off-by: Mahesh Sivasubramanian <msivasub@codeaurora.org> |
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Greg Kroah-Hartman
|
b24413180f |
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Rafael J. Wysocki
|
b7eaf1aab9 |
cpufreq: schedutil: Avoid reducing frequency of busy CPUs prematurely
The way the schedutil governor uses the PELT metric causes it to underestimate the CPU utilization in some cases. That can be easily demonstrated by running kernel compilation on a Sandy Bridge Intel processor, running turbostat in parallel with it and looking at the values written to the MSR_IA32_PERF_CTL register. Namely, the expected result would be that when all CPUs were 100% busy, all of them would be requested to run in the maximum P-state, but observation shows that this clearly isn't the case. The CPUs run in the maximum P-state for a while and then are requested to run slower and go back to the maximum P-state after a while again. That causes the actual frequency of the processor to visibly oscillate below the sustainable maximum in a jittery fashion which clearly is not desirable. That has been attributed to CPU utilization metric updates on task migration that cause the total utilization value for the CPU to be reduced by the utilization of the migrated task. If that happens, the schedutil governor may see a CPU utilization reduction and will attempt to reduce the CPU frequency accordingly right away. That may be premature, though, for example if the system is generally busy and there are other runnable tasks waiting to be run on that CPU already. This is unlikely to be an issue on systems where cpufreq policies are shared between multiple CPUs, because in those cases the policy utilization is computed as the maximum of the CPU utilization values over the whole policy and if that turns out to be low, reducing the frequency for the policy most likely is a good idea anyway. On systems with one CPU per policy, however, it may affect performance adversely and even lead to increased energy consumption in some cases. On those systems it may be addressed by taking another utilization metric into consideration, like whether or not the CPU whose frequency is about to be reduced has been idle recently, because if that's not the case, the CPU is likely to be busy in the near future and its frequency should not be reduced. To that end, use the counter of idle calls in the timekeeping code. Namely, make the schedutil governor look at that counter for the current CPU every time before its frequency is about to be reduced. If the counter has not changed since the previous iteration of the governor computations for that CPU, the CPU has been busy for all that time and its frequency should not be decreased, so if the new frequency would be lower than the one set previously, the governor will skip the frequency update. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Joel Fernandes <joelaf@google.com> |
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Thomas Gleixner
|
2456e85535 |
ktime: Get rid of the union
ktime is a union because the initial implementation stored the time in scalar nanoseconds on 64 bit machine and in a endianess optimized timespec variant for 32bit machines. The Y2038 cleanup removed the timespec variant and switched everything to scalar nanoseconds. The union remained, but become completely pointless. Get rid of the union and just keep ktime_t as simple typedef of type s64. The conversion was done with coccinelle and some manual mopping up. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> |
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Kees Cook
|
4cc7ecb7f2 |
param: convert some "on"/"off" users to strtobool
This changes several users of manual "on"/"off" parsing to use strtobool. Some side-effects: - these uses will now parse y/n/1/0 meaningfully too - the early_param uses will now bubble up parse errors Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Cc: Amitkumar Karwar <akarwar@marvell.com> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Joe Perches <joe@perches.com> Cc: Kalle Valo <kvalo@codeaurora.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Nishant Sarmukadam <nishants@marvell.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Steve French <sfrench@samba.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Frederic Weisbecker
|
b78783000d |
posix-cpu-timers: Migrate to use new tick dependency mask model
Instead of providing asynchronous checks for the nohz subsystem to verify posix cpu timers tick dependency, migrate the latter to the new mask. In order to keep track of the running timers and expose the tick dependency accordingly, we must probe the timers queuing and dequeuing on threads and process lists. Unfortunately it implies both task and signal level dependencies. We should be able to further optimize this and merge all that on the task level dependency, at the cost of a bit of complexity and may be overhead. Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com> Cc: Christoph Lameter <cl@linux.com> Cc: Chris Metcalf <cmetcalf@ezchip.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> |
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Frederic Weisbecker
|
555e0c1ef7 |
perf: Migrate perf to use new tick dependency mask model
Instead of providing asynchronous checks for the nohz subsystem to verify perf event tick dependency, migrate perf to the new mask. Perf needs the tick for two situations: 1) Freq events. We could set the tick dependency when those are installed on a CPU context. But setting a global dependency on top of the global freq events accounting is much easier. If people want that to be optimized, we can still refine that on the per-CPU tick dependency level. This patch dooesn't change the current behaviour anyway. 2) Throttled events: this is a per-cpu dependency. Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com> Cc: Christoph Lameter <cl@linux.com> Cc: Chris Metcalf <cmetcalf@ezchip.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> |
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Frederic Weisbecker
|
e6e6cc22e0 |
nohz: Use enum code for tick stop failure tracing message
It makes nohz tracing more lightweight, standard and easier to parse.
Examples:
user_loop-2904 [007] d..1 517.701126: tick_stop: success=1 dependency=NONE
user_loop-2904 [007] dn.1 518.021181: tick_stop: success=0 dependency=SCHED
posix_timers-6142 [007] d..1 1739.027400: tick_stop: success=0 dependency=POSIX_TIMER
user_loop-5463 [007] dN.1 1185.931939: tick_stop: success=0 dependency=PERF_EVENTS
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
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Frederic Weisbecker
|
d027d45d8a |
nohz: New tick dependency mask
The tick dependency is evaluated on every IRQ and context switch. This consists is a batch of checks which determine whether it is safe to stop the tick or not. These checks are often split in many details: posix cpu timers, scheduler, sched clock, perf events.... each of which are made of smaller details: posix cpu timer involves checking process wide timers then thread wide timers. Perf involves checking freq events then more per cpu details. Checking these informations asynchronously every time we update the full dynticks state bring avoidable overhead and a messy layout. Let's introduce instead tick dependency masks: one for system wide dependency (unstable sched clock, freq based perf events), one for CPU wide dependency (sched, throttling perf events), and task/signal level dependencies (posix cpu timers). The subsystems are responsible for setting and clearing their dependency through a set of APIs that will take care of concurrent dependency mask modifications and kick targets to restart the relevant CPU tick whenever needed. This new dependency engine stays beside the old one until all subsystems having a tick dependency are converted to it. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Suggested-by: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com> Cc: Christoph Lameter <cl@linux.com> Cc: Chris Metcalf <cmetcalf@ezchip.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> |
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Jean Delvare
|
46373a15f6 |
time: nohz: Expose tick_nohz_enabled
The cpuidle subsystem needs it. Signed-off-by: Jean Delvare <jdelvare@suse.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Vatika Harlalka
|
9642d18eee |
nohz: Affine unpinned timers to housekeepers
The problem addressed in this patch is about affining unpinned timers. Adaptive or Full Dynticks CPUs are currently disturbed by unnecessary jitter due to firing of such timers on them. This patch will affine timers to online CPUs which are not full dynticks in NOHZ_FULL configured systems. It should not introduce overhead in nohz full off case due to static keys. Signed-off-by: Vatika Harlalka <vatikaharlalka@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Chris Metcalf <cmetcalf@ezchip.com> Cc: Christoph Lameter <cl@linux.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1441119060-2230-2-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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|
Frederic Weisbecker
|
de734f89b6 |
nohz: Remove useless argument on tick_nohz_task_switch()
Leftover from early code. Cc: Christoph Lameter <cl@linux.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> |
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|
Frederic Weisbecker
|
73738a95d0 |
nohz: Restart nohz full tick from irq exit
Restart the tick when necessary from the irq exit path. It makes nohz full more flexible, simplify the related IPIs and doesn't bring significant overhead on irq exit. In a longer term view, it will allow us to piggyback the nohz kick on the scheduler IPI in the future instead of sending a dedicated IPI that often doubles the scheduler IPI on task wakeup. This will require more changes though including careful review of resched_curr() callers to include nohz full needs. Reviewed-by: Rik van Riel <riel@redhat.com> Cc: Christoph Lameter <cl@linux.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> |
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Chris Metcalf
|
03f6199a35 |
nohz: Prevent tilegx network driver interrupts
Normally the tilegx networking shim sends irqs to all the cores to distribute the load of processing incoming-packet interrupts, so that you can get to multiple Gb's of traffic inbound. However, in nohz_full mode we don't want to interrupt the nohz_full cores by default, so we limit the set of cores we use to only the online housekeeping cores. To make client code easier to read, we introduce a new nohz_full accessor, housekeeping_cpumask(), which returns a pointer to the housekeeping_mask if nohz_full is enabled, and otherwise returns the cpu_possible_mask. Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com> Cc: Christoph Lameter <cl@linux.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> |
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Thomas Gleixner
|
37b64a4206 |
tick/broadcast: Unbreak CONFIG_GENERIC_CLOCKEVENTS=n build
Making tick_broadcast_oneshot_control() independent from
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST broke the build for
CONFIG_GENERIC_CLOCKEVENTS=n because the function is not defined
there.
Provide a proper stub inline.
Fixes:
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Thomas Gleixner
|
f32dd11705 |
tick/broadcast: Make idle check independent from mode and config
Currently the broadcast busy check, which prevents the idle code from going into deep idle, works only in one shot mode. If NOHZ and HIGHRES are off (config or command line) there is no sanity check at all, so under certain conditions cpus are allowed to go into deep idle, where the local timer stops, and are not woken up again because there is no broadcast timer installed or a hrtimer based broadcast device is not evaluated. Move tick_broadcast_oneshot_control() into the common code and provide proper subfunctions for the various config combinations. The common check in tick_broadcast_oneshot_control() is for the C3STOP misfeature flag of the local clock event device. If its not set, idle can proceed. If set, further checks are necessary. Provide checks for the trivial cases: - If broadcast is disabled in the config, then return busy - If oneshot mode (NOHZ/HIGHES) is disabled in the config, return busy if the broadcast device is hrtimer based. - If oneshot mode is enabled in the config call the original tick_broadcast_oneshot_control() function. That function needs extra checks which will be implemented in seperate patches. [ Split out from a larger combo patch ] Reported-and-tested-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Suzuki Poulose <Suzuki.Poulose@arm.com> Cc: Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com> Cc: Catalin Marinas <Catalin.Marinas@arm.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1507070929360.3916@nanos |
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Linus Torvalds
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43c9fad942 |
Merge tag 'pm+acpi-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI updates from Rafael Wysocki:
"The rework of backlight interface selection API from Hans de Goede
stands out from the number of commits and the number of affected
places perspective. The cpufreq core fixes from Viresh Kumar are
quite significant too as far as the number of commits goes and because
they should reduce CPU online/offline overhead quite a bit in the
majority of cases.
From the new featues point of view, the ACPICA update (to upstream
revision 20150515) adding support for new ACPI 6 material to ACPICA is
the one that matters the most as some new significant features will be
based on it going forward. Also included is an update of the ACPI
device power management core to follow ACPI 6 (which in turn reflects
the Windows' device PM implementation), a PM core extension to support
wakeup interrupts in a more generic way and support for the ACPI _CCA
device configuration object.
The rest is mostly fixes and cleanups all over and some documentation
updates, including new DT bindings for Operating Performance Points.
There is one fix for a regression introduced in the 4.1 cycle, but it
adds quite a number of lines of code, it wasn't really ready before
Thursday and you were on vacation, so I refrained from pushing it on
the last minute for 4.1.
Specifics:
- ACPICA update to upstream revision 20150515 including basic support
for ACPI 6 features: new ACPI tables introduced by ACPI 6 (STAO,
XENV, WPBT, NFIT, IORT), changes related to the other tables (DTRM,
FADT, LPIT, MADT), new predefined names (_BTH, _CR3, _DSD, _LPI,
_MTL, _PRR, _RDI, _RST, _TFP, _TSN), fixes and cleanups (Bob Moore,
Lv Zheng).
- ACPI device power management core code update to follow ACPI 6
which reflects the ACPI device power management implementation in
Windows (Rafael J Wysocki).
- rework of the backlight interface selection logic to reduce the
number of kernel command line options and improve the handling of
DMI quirks that may be involved in that and to make the code
generally more straightforward (Hans de Goede).
- fixes for the ACPI Embedded Controller (EC) driver related to the
handling of EC transactions (Lv Zheng).
- fix for a regression related to the ACPI resources management and
resulting from a recent change of ACPI initialization code ordering
(Rafael J Wysocki).
- fix for a system initialization regression related to ACPI
introduced during the 3.14 cycle and caused by running the code
that switches the platform over to the ACPI mode too early in the
initialization sequence (Rafael J Wysocki).
- support for the ACPI _CCA device configuration object related to
DMA cache coherence (Suravee Suthikulpanit).
- ACPI/APEI fixes and cleanups (Jiri Kosina, Borislav Petkov).
- ACPI battery driver cleanups (Luis Henriques, Mathias Krause).
- ACPI processor driver cleanups (Hanjun Guo).
- cleanups and documentation update related to the ACPI device
properties interface based on _DSD (Rafael J Wysocki).
- ACPI device power management fixes (Rafael J Wysocki).
- assorted cleanups related to ACPI (Dominik Brodowski, Fabian
Frederick, Lorenzo Pieralisi, Mathias Krause, Rafael J Wysocki).
- fix for a long-standing issue causing General Protection Faults to
be generated occasionally on return to user space after resume from
ACPI-based suspend-to-RAM on 32-bit x86 (Ingo Molnar).
- fix to make the suspend core code return -EBUSY consistently in all
cases when system suspend is aborted due to wakeup detection (Ruchi
Kandoi).
- support for automated device wakeup IRQ handling allowing drivers
to make their PM support more starightforward (Tony Lindgren).
- new tracepoints for suspend-to-idle tracing and rework of the
prepare/complete callbacks tracing in the PM core (Todd E Brandt,
Rafael J Wysocki).
- wakeup sources framework enhancements (Jin Qian).
- new macro for noirq system PM callbacks (Grygorii Strashko).
- assorted cleanups related to system suspend (Rafael J Wysocki).
- cpuidle core cleanups to make the code more efficient (Rafael J
Wysocki).
- powernv/pseries cpuidle driver update (Shilpasri G Bhat).
- cpufreq core fixes related to CPU online/offline that should reduce
the overhead of these operations quite a bit, unless the CPU in
question is physically going away (Viresh Kumar, Saravana Kannan).
- serialization of cpufreq governor callbacks to avoid race
conditions in some cases (Viresh Kumar).
- intel_pstate driver fixes and cleanups (Doug Smythies, Prarit
Bhargava, Joe Konno).
- cpufreq driver (arm_big_little, cpufreq-dt, qoriq) updates (Sudeep
Holla, Felipe Balbi, Tang Yuantian).
- assorted cleanups in cpufreq drivers and core (Shailendra Verma,
Fabian Frederick, Wang Long).
- new Device Tree bindings for representing Operating Performance
Points (Viresh Kumar).
- updates for the common clock operations support code in the PM core
(Rajendra Nayak, Geert Uytterhoeven).
- PM domains core code update (Geert Uytterhoeven).
- Intel Knights Landing support for the RAPL (Running Average Power
Limit) power capping driver (Dasaratharaman Chandramouli).
- fixes related to the floor frequency setting on Atom SoCs in the
RAPL power capping driver (Ajay Thomas).
- runtime PM framework documentation update (Ben Dooks).
- cpupower tool fix (Herton R Krzesinski)"
* tag 'pm+acpi-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (194 commits)
cpuidle: powernv/pseries: Auto-promotion of snooze to deeper idle state
x86: Load __USER_DS into DS/ES after resume
PM / OPP: Add binding for 'opp-suspend'
PM / OPP: Allow multiple OPP tables to be passed via DT
PM / OPP: Add new bindings to address shortcomings of existing bindings
ACPI: Constify ACPI device IDs in documentation
ACPI / enumeration: Document the rules regarding the PRP0001 device ID
ACPI / video: Make acpi_video_unregister_backlight() private
acpi-video-detect: Remove old API
toshiba-acpi: Port to new backlight interface selection API
thinkpad-acpi: Port to new backlight interface selection API
sony-laptop: Port to new backlight interface selection API
samsung-laptop: Port to new backlight interface selection API
msi-wmi: Port to new backlight interface selection API
msi-laptop: Port to new backlight interface selection API
intel-oaktrail: Port to new backlight interface selection API
ideapad-laptop: Port to new backlight interface selection API
fujitsu-laptop: Port to new backlight interface selection API
eeepc-laptop: Port to new backlight interface selection API
dell-wmi: Port to new backlight interface selection API
...
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Rafael J. Wysocki
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87e9b9f1d8 |
PM / sleep: Make suspend-to-idle-specific code depend on CONFIG_SUSPEND
Since idle_should_freeze() is defined to always return 'false' for CONFIG_SUSPEND unset, all of the code depending on it in cpuidle_idle_call() is not necessary in that case. Make that code depend on CONFIG_SUSPEND too to avoid building it when it is not going to be used. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> |
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Chris Metcalf
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83dedea8a0 |
nohz: Add tick_nohz_full_add_cpus_to() API
This API is useful to modify a cpumask indicating some special nohz-type functionality so that the nohz cores are automatically added to that set. Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Jones <davej@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Mike Galbraith <umgwanakikbuti@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1429024675-18938-1-git-send-email-cmetcalf@ezchip.com Link: http://lkml.kernel.org/r/1430928266-24888-4-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Thomas Gleixner
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a49b116dcb |
clockevents: Cleanup dead cpu explicitely
clockevents_notify() is a leftover from the early design of the clockevents facility. It's really not a notification mechanism, it's a multiplex call. We are way better off to have explicit calls instead of this monstrosity. Split out the cleanup function for a dead cpu and invoke it directly from the cpu down code. Make it conditional on CPU_HOTPLUG as well. Temporary change, will be refined in the future. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> [ Rebased, added clockevents_notify() removal ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1735025.raBZdQHM3m@vostro.rjw.lan Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Thomas Gleixner
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52c063d1ad |
clockevents: Make tick handover explicit
clockevents_notify() is a leftover from the early design of the clockevents facility. It's really not a notification mechanism, it's a multiplex call. We are way better off to have explicit calls instead of this monstrosity. Split out the tick_handover call and invoke it explicitely from the hotplug code. Temporary solution will be cleaned up in later patches. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> [ Rebase ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/1658173.RkEEILFiQZ@vostro.rjw.lan Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Thomas Gleixner
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1fe5d5c3c9 |
clockevents: Provide explicit broadcast oneshot control functions
clockevents_notify() is a leftover from the early design of the clockevents facility. It's really not a notification mechanism, it's a multiplex call. We are way better off to have explicit calls instead of this monstrosity. Split out the broadcast oneshot control into a separate function and provide inline helpers. Switch clockevents_notify() over. This will go away once all callers are converted. This also gets rid of the nested locking of clockevents_lock and broadcast_lock. The broadcast oneshot control functions do not require clockevents_lock. Only the managing functions (setup/shutdown/suspend/resume of the broadcast device require clockevents_lock. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Len Brown <lenb@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Tony Lindgren <tony@atomide.com> Link: http://lkml.kernel.org/r/13000649.8qZuEDV0OA@vostro.rjw.lan Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Thomas Gleixner
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592a438ff3 |
clockevents: Provide explicit broadcast control functions
clockevents_notify() is a leftover from the early design of the clockevents facility. It's really not a notification mechanism, it's a multiplex call. We are way better off to have explicit calls instead of this monstrosity. Split out the broadcast control into a separate function and provide inline helpers. Switch clockevents_notify() over. This will go away once all callers are converted. This also gets rid of the nested locking of clockevents_lock and broadcast_lock. The broadcast control functions do not require clockevents_lock. Only the managing functions (setup/shutdown/suspend/resume of the broadcast device require clockevents_lock. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Len Brown <lenb@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tony Lindgren <tony@atomide.com> Link: http://lkml.kernel.org/r/8086559.ttsuS0n1Xr@vostro.rjw.lan Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Preeti U Murthy
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345527b1ed |
clockevents: Fix cpu_down() race for hrtimer based broadcasting
It was found when doing a hotplug stress test on POWER, that the machine either hit softlockups or rcu_sched stall warnings. The issue was traced to commit: |
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Thomas Gleixner
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7270d11c56 |
arm/bL_switcher: Kill tick suspend hackery
Use the new tick_suspend/resume_local() and get rid of the homebrewn implementation of these in the ARM bL switcher. The check for the cpumask is completely pointless. There is no harm to suspend a per cpu tick device unconditionally. If that's a real issue then we fix it proper at the core level and not with some completely undocumented hacks in some random core code. Move the tick internals to the core code, now that this nuisance is gone. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> [ rjw: Rebase, changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Nicolas Pitre <nicolas.pitre@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Link: http://lkml.kernel.org/r/1655112.Ws17YsMfN7@vostro.rjw.lan Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Thomas Gleixner
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f46481d0a7 |
tick/xen: Provide and use tick_suspend_local() and tick_resume_local()
Xen calls on every cpu into tick_resume() which is just wrong. tick_resume() is for the syscore global suspend/resume invocation. What XEN really wants is a per cpu local resume function. Provide a tick_resume_local() function and use it in XEN. Also provide a complementary tick_suspend_local() and modify tick_unfreeze() and tick_freeze(), respectively, to use the new local tick resume/suspend functions. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> [ Combined two patches, rebased, modified subject/changelog. ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1698741.eezk9tnXtG@vostro.rjw.lan [ Merged to latest timers/core. ] Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Thomas Gleixner
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4ffee521f3 |
clockevents: Make suspend/resume calls explicit
clockevents_notify() is a leftover from the early design of the clockevents facility. It's really not a notification mechanism, it's a multiplex call. We are way better off to have explicit calls instead of this monstrosity. Split out the suspend/resume() calls and invoke them directly from the call sites. No locking required at this point because these calls happen with interrupts disabled and a single cpu online. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> [ Rebased on top of 4.0-rc5. ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/713674030.jVm1qaHuPf@vostro.rjw.lan [ Rebased on top of latest timers/core. ] Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Thomas Gleixner
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c1797baf68 |
tick: Move core only declarations and functions to core
No point to expose everything to the world. People just believe such functions can be abused for whatever purposes. Sigh. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> [ Rebased on top of 4.0-rc5 ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Nicolas Pitre <nico@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/28017337.VbCUc39Gme@vostro.rjw.lan [ Merged to latest timers/core ] Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Rafael J. Wysocki
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124cf9117c |
PM / sleep: Make it possible to quiesce timers during suspend-to-idle
The efficiency of suspend-to-idle depends on being able to keep CPUs in the deepest available idle states for as much time as possible. Ideally, they should only be brought out of idle by system wakeup interrupts. However, timer interrupts occurring periodically prevent that from happening and it is not practical to chase all of the "misbehaving" timers in a whack-a-mole fashion. A much more effective approach is to suspend the local ticks for all CPUs and the entire timekeeping along the lines of what is done during full suspend, which also helps to keep suspend-to-idle and full suspend reasonably similar. The idea is to suspend the local tick on each CPU executing cpuidle_enter_freeze() and to make the last of them suspend the entire timekeeping. That should prevent timer interrupts from triggering until an IO interrupt wakes up one of the CPUs. It needs to be done with interrupts disabled on all of the CPUs, though, because otherwise the suspended clocksource might be accessed by an interrupt handler which might lead to fatal consequences. Unfortunately, the existing ->enter callbacks provided by cpuidle drivers generally cannot be used for implementing that, because some of them re-enable interrupts temporarily and some idle entry methods cause interrupts to be re-enabled automatically on exit. Also some of these callbacks manipulate local clock event devices of the CPUs which really shouldn't be done after suspending their ticks. To overcome that difficulty, introduce a new cpuidle state callback, ->enter_freeze, that will be guaranteed (1) to keep interrupts disabled all the time (and return with interrupts disabled) and (2) not to touch the CPU timer devices. Modify cpuidle_enter_freeze() to look for the deepest available idle state with ->enter_freeze present and to make the CPU execute that callback with suspended tick (and the last of the online CPUs to execute it with suspended timekeeping). Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> |
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Linus Torvalds
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1ee07ef6b5 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
"This patch set contains the main portion of the changes for 3.18 in
regard to the s390 architecture. It is a bit bigger than usual,
mainly because of a new driver and the vector extension patches.
The interesting bits are:
- Quite a bit of work on the tracing front. Uprobes is enabled and
the ftrace code is reworked to get some of the lost performance
back if CONFIG_FTRACE is enabled.
- To improve boot time with CONFIG_DEBIG_PAGEALLOC, support for the
IPTE range facility is added.
- The rwlock code is re-factored to improve writer fairness and to be
able to use the interlocked-access instructions.
- The kernel part for the support of the vector extension is added.
- The device driver to access the CD/DVD on the HMC is added, this
will hopefully come in handy to improve the installation process.
- Add support for control-unit initiated reconfiguration.
- The crypto device driver is enhanced to enable the additional AP
domains and to allow the new crypto hardware to be used.
- Bug fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (39 commits)
s390/ftrace: simplify enabling/disabling of ftrace_graph_caller
s390/ftrace: remove 31 bit ftrace support
s390/kdump: add support for vector extension
s390/disassembler: add vector instructions
s390: add support for vector extension
s390/zcrypt: Toleration of new crypto hardware
s390/idle: consolidate idle functions and definitions
s390/nohz: use a per-cpu flag for arch_needs_cpu
s390/vtime: do not reset idle data on CPU hotplug
s390/dasd: add support for control unit initiated reconfiguration
s390/dasd: fix infinite loop during format
s390/mm: make use of ipte range facility
s390/setup: correct 4-level kernel page table detection
s390/topology: call set_sched_topology early
s390/uprobes: architecture backend for uprobes
s390/uprobes: common library for kprobes and uprobes
s390/rwlock: use the interlocked-access facility 1 instructions
s390/rwlock: improve writer fairness
s390/rwlock: remove interrupt-enabling rwlock variant.
s390/mm: remove change bit override support
...
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Martin Schwidefsky
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fe0f49768d |
s390/nohz: use a per-cpu flag for arch_needs_cpu
Move the nohz_delay bit from the s390_idle data structure to the per-cpu flags. Clear the nohz delay flag in __cpu_disable and remove the cpu hotplug notifier that used to do this. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> |
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Frederic Weisbecker
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a80e49e2cc |
nohz: Move nohz full init call to tick init
This way we unbloat a bit main.c and more importantly we initialize nohz full after init_IRQ(). This dependency will be needed in further patches because nohz full needs irq work to raise its own IRQ. Information about the support for this ability on ARM64 is obtained on init_IRQ() which initialize the pointer to __smp_call_function. Since tick_init() is called right after init_IRQ(), this is a good place to call tick_nohz_init() and prepare for that dependency. Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> |
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Frederic Weisbecker
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40bea03959 |
nohz: Restore NMI safe local irq work for local nohz kick
The local nohz kick is currently used by perf which needs it to be
NMI-safe. Recent commit though (
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Linus Torvalds
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98959948a7 |
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar: - Move the nohz kick code out of the scheduler tick to a dedicated IPI, from Frederic Weisbecker. This necessiated quite some background infrastructure rework, including: * Clean up some irq-work internals * Implement remote irq-work * Implement nohz kick on top of remote irq-work * Move full dynticks timer enqueue notification to new kick * Move multi-task notification to new kick * Remove unecessary barriers on multi-task notification - Remove proliferation of wait_on_bit() action functions and allow wait_on_bit_action() functions to support a timeout. (Neil Brown) - Another round of sched/numa improvements, cleanups and fixes. (Rik van Riel) - Implement fast idling of CPUs when the system is partially loaded, for better scalability. (Tim Chen) - Restructure and fix the CPU hotplug handling code that may leave cfs_rq and rt_rq's throttled when tasks are migrated away from a dead cpu. (Kirill Tkhai) - Robustify the sched topology setup code. (Peterz Zijlstra) - Improve sched_feat() handling wrt. static_keys (Jason Baron) - Misc fixes. * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits) sched/fair: Fix 'make xmldocs' warning caused by missing description sched: Use macro for magic number of -1 for setparam sched: Robustify topology setup sched: Fix sched_setparam() policy == -1 logic sched: Allow wait_on_bit_action() functions to support a timeout sched: Remove proliferation of wait_on_bit() action functions sched/numa: Revert "Use effective_load() to balance NUMA loads" sched: Fix static_key race with sched_feat() sched: Remove extra static_key*() function indirection sched/rt: Fix replenish_dl_entity() comments to match the current upstream code sched: Transform resched_task() into resched_curr() sched/deadline: Kill task_struct->pi_top_task sched: Rework check_for_tasks() sched/rt: Enqueue just unthrottled rt_rq back on the stack in __disable_runtime() sched/fair: Disable runtime_enabled on dying rq sched/numa: Change scan period code to match intent sched/numa: Rework best node setting in task_numa_migrate() sched/numa: Examine a task move when examining a task swap sched/numa: Simplify task_numa_compare() sched/numa: Use effective_load() to balance NUMA loads ... |
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Paul E. McKenney
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c0f489d2c6 |
rcu: Bind grace-period kthreads to non-NO_HZ_FULL CPUs
Binding the grace-period kthreads to the timekeeping CPU resulted in significant performance decreases for some workloads. For more detail, see: https://lkml.org/lkml/2014/6/3/395 for benchmark numbers https://lkml.org/lkml/2014/6/4/218 for CPU statistics It turns out that it is necessary to bind the grace-period kthreads to the timekeeping CPU only when all but CPU 0 is a nohz_full CPU on the one hand or if CONFIG_NO_HZ_FULL_SYSIDLE=y on the other. In other cases, it suffices to bind the grace-period kthreads to the set of non-nohz_full CPUs. This commit therefore creates a tick_nohz_not_full_mask that is the complement of tick_nohz_full_mask, and then binds the grace-period kthread to the set of CPUs indicated by this new mask, which covers the CONFIG_NO_HZ_FULL_SYSIDLE=n case. The CONFIG_NO_HZ_FULL_SYSIDLE=y case still binds the grace-period kthreads to the timekeeping CPU. This commit also includes the tick_nohz_full_enabled() check suggested by Frederic Weisbecker. Reported-by: Jet Chen <jet.chen@intel.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> [ paulmck: Created housekeeping_affine() and housekeeping_mask per fweisbec feedback. ] |
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Frederic Weisbecker
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3d36aebc2e |
nohz: Support nohz full remote kick
Remotely kicking a full nohz CPU in order to make it re-evaluate its next tick is currently implemented using the scheduler IPI. However this bloats a scheduler fast path with an off-topic feature. The scheduler tick was abused here for its cool "callable anywhere/anytime" properties. But now that the irq work subsystem can queue remote callbacks, it's a perfect fit to safely queue IPIs when interrupts are disabled without worrying about concurrent callers. So lets implement remote kick on top of irq work. This is going to be used when a new event requires the next tick to be recalculated: more than 1 task competing on the CPU, timer armed, ... Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Kevin Hilman <khilman@linaro.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> |
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Frederic Weisbecker
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5acac1be49 |
tick: Rename tick_check_idle() to tick_irq_enter()
This makes the code more symetric against the existing tick functions called on irq exit: tick_irq_exit() and tick_nohz_irq_exit(). These function are also symetric as they mirror each other's action: we start to account idle time on irq exit and we stop this accounting on irq entry. Also the tick is stopped on irq exit and timekeeping catches up with the tickless time elapsed until we reach irq entry. This rename was suggested by Peter Zijlstra a long while ago but it got forgotten in the mass. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Alex Shi <alex.shi@linaro.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Kevin Hilman <khilman@linaro.org> Link: http://lkml.kernel.org/r/1387320692-28460-2-git-send-email-fweisbec@gmail.com Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> |
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Frederic Weisbecker
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58135f574f |
context_tracking: Wrap static key check into more intuitive function name
Use a function with a meaningful name to check the global context tracking state. static_key_false() is a bit confusing for reviewers. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> |
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Frederic Weisbecker
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e8fcaa5c54 |
nohz: Convert a few places to use local per cpu accesses
A few functions use remote per CPU access APIs when they deal with local values. Just do the right conversion to improve performance, code readability and debug checks. While at it, lets extend some of these function names with *_this_cpu() suffix in order to display their purpose more clearly. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> |