* refs/heads/tmp-d6bbe8b
Linux 4.4.127
Revert "ip6_vti: adjust vti mtu according to mtu of lower device"
net: cavium: liquidio: fix up "Avoid dma_unmap_single on uninitialized ndata"
spi: davinci: fix up dma_mapping_error() incorrect patch
Revert "mtip32xx: use runtime tag to initialize command header"
Revert "cpufreq: Fix governor module removal race"
Revert "ARM: dts: omap3-n900: Fix the audio CODEC's reset pin"
Revert "ARM: dts: am335x-pepper: Fix the audio CODEC's reset pin"
Revert "PCI/MSI: Stop disabling MSI/MSI-X in pci_device_shutdown()"
nospec: Kill array_index_nospec_mask_check()
nospec: Move array_index_nospec() parameter checking into separate macro
net: hns: Fix ethtool private flags
md/raid10: reset the 'first' at the end of loop
ARM: dts: am57xx-beagle-x15-common: Add overide powerhold property
ARM: dts: dra7: Add power hold and power controller properties to palmas
Documentation: pinctrl: palmas: Add ti,palmas-powerhold-override property definition
vt: change SGR 21 to follow the standards
Input: i8042 - enable MUX on Sony VAIO VGN-CS series to fix touchpad
Input: i8042 - add Lenovo ThinkPad L460 to i8042 reset list
staging: comedi: ni_mio_common: ack ai fifo error interrupts.
fs/proc: Stop trying to report thread stacks
crypto: x86/cast5-avx - fix ECB encryption when long sg follows short one
crypto: ahash - Fix early termination in hash walk
parport_pc: Add support for WCH CH382L PCI-E single parallel port card.
media: usbtv: prevent double free in error case
mei: remove dev_err message on an unsupported ioctl
USB: serial: cp210x: add ELDAT Easywave RX09 id
USB: serial: ftdi_sio: add support for Harman FirmwareHubEmulator
USB: serial: ftdi_sio: add RT Systems VX-8 cable
usb: dwc2: Improve gadget state disconnection handling
scsi: virtio_scsi: always read VPD pages for multiqueue too
llist: clang: introduce member_address_is_nonnull()
Bluetooth: Fix missing encryption refresh on Security Request
netfilter: x_tables: add and use xt_check_proc_name
netfilter: bridge: ebt_among: add more missing match size checks
xfrm: Refuse to insert 32 bit userspace socket policies on 64 bit systems
net: xfrm: use preempt-safe this_cpu_read() in ipcomp_alloc_tfms()
RDMA/ucma: Introduce safer rdma_addr_size() variants
RDMA/ucma: Don't allow join attempts for unsupported AF family
RDMA/ucma: Check that device exists prior to accessing it
RDMA/ucma: Check that device is connected prior to access it
RDMA/ucma: Ensure that CM_ID exists prior to access it
RDMA/ucma: Fix use-after-free access in ucma_close
RDMA/ucma: Check AF family prior resolving address
xfrm_user: uncoditionally validate esn replay attribute struct
arm64: avoid overflow in VA_START and PAGE_OFFSET
selinux: Remove redundant check for unknown labeling behavior
netfilter: ctnetlink: Make some parameters integer to avoid enum mismatch
tty: provide tty_name() even without CONFIG_TTY
audit: add tty field to LOGIN event
frv: declare jiffies to be located in the .data section
jiffies.h: declare jiffies and jiffies_64 with ____cacheline_aligned_in_smp
fs: compat: Remove warning from COMPATIBLE_IOCTL
selinux: Remove unnecessary check of array base in selinux_set_mapping()
cpumask: Add helper cpumask_available()
genirq: Use cpumask_available() for check of cpumask variable
netfilter: nf_nat_h323: fix logical-not-parentheses warning
Input: mousedev - fix implicit conversion warning
dm ioctl: remove double parentheses
PCI: Make PCI_ROM_ADDRESS_MASK a 32-bit constant
writeback: fix the wrong congested state variable definition
ACPI, PCI, irq: remove redundant check for null string pointer
kprobes/x86: Fix to set RWX bits correctly before releasing trampoline
usb: gadget: f_hid: fix: Prevent accessing released memory
usb: gadget: align buffer size when allocating for OUT endpoint
usb: gadget: fix usb_ep_align_maybe endianness and new usb_ep_align
usb: gadget: change len to size_t on alloc_ep_req()
usb: gadget: define free_ep_req as universal function
partitions/msdos: Unable to mount UFS 44bsd partitions
perf/hwbp: Simplify the perf-hwbp code, fix documentation
ALSA: pcm: potential uninitialized return values
ALSA: pcm: Use dma_bytes as size parameter in dma_mmap_coherent()
mtd: jedec_probe: Fix crash in jedec_read_mfr()
Replace #define with enum for better compilation errors.
Add missing include to drivers/tty/goldfish.c
Fix whitespace in drivers/tty/goldfish.c
ANDROID: fuse: Add null terminator to path in canonical path to avoid issue
ANDROID: sdcardfs: Fix sdcardfs to stop creating cases-sensitive duplicate entries.
ANDROID: add missing include to pdev_bus
ANDROID: pdev_bus: replace writel with gf_write_ptr
ANDROID: Cleanup type casting in goldfish.h
ANDROID: Include missing headers in goldfish.h
ANDROID: cpufreq: times: skip printing invalid frequencies
ANDROID: xt_qtaguid: Remove unnecessary null checks to device's name
ANDROID: xt_qtaguid: Remove unnecessary null checks to ifa_label
ANDROID: cpufreq: times: allocate enough space for a uid_entry
Linux 4.4.126
net: systemport: Rewrite __bcm_sysport_tx_reclaim()
net: fec: Fix unbalanced PM runtime calls
ieee802154: 6lowpan: fix possible NULL deref in lowpan_device_event()
s390/qeth: on channel error, reject further cmd requests
s390/qeth: lock read device while queueing next buffer
s390/qeth: when thread completes, wake up all waiters
s390/qeth: free netdevice when removing a card
team: Fix double free in error path
skbuff: Fix not waking applications when errors are enqueued
net: Only honor ifindex in IP_PKTINFO if non-0
netlink: avoid a double skb free in genlmsg_mcast()
net/iucv: Free memory obtained by kzalloc
net: ethernet: ti: cpsw: add check for in-band mode setting with RGMII PHY interface
net: ethernet: arc: Fix a potential memory leak if an optional regulator is deferred
l2tp: do not accept arbitrary sockets
ipv6: fix access to non-linear packet in ndisc_fill_redirect_hdr_option()
dccp: check sk for closed state in dccp_sendmsg()
net: Fix hlist corruptions in inet_evict_bucket()
Revert "genirq: Use irqd_get_trigger_type to compare the trigger type for shared IRQs"
scsi: sg: don't return bogus Sg_requests
Revert "genirq: Use irqd_get_trigger_type to compare the trigger type for shared IRQs"
UPSTREAM: drm: virtio-gpu: set atomic flag
UPSTREAM: drm: virtio-gpu: transfer dumb buffers to host on plane update
UPSTREAM: drm: virtio-gpu: ensure plane is flushed to host on atomic update
UPSTREAM: drm: virtio-gpu: get the fb from the plane state for atomic updates
Linux 4.4.125
bpf, x64: increase number of passes
bpf: skip unnecessary capability check
kbuild: disable clang's default use of -fmerge-all-constants
staging: lustre: ptlrpc: kfree used instead of kvfree
perf/x86/intel: Don't accidentally clear high bits in bdw_limit_period()
x86/entry/64: Don't use IST entry for #BP stack
x86/boot/64: Verify alignment of the LOAD segment
x86/build/64: Force the linker to use 2MB page size
kvm/x86: fix icebp instruction handling
tty: vt: fix up tabstops properly
can: cc770: Fix use after free in cc770_tx_interrupt()
can: cc770: Fix queue stall & dropped RTR reply
can: cc770: Fix stalls on rt-linux, remove redundant IRQ ack
staging: ncpfs: memory corruption in ncp_read_kernel()
mtd: nand: fsl_ifc: Fix nand waitfunc return value
tracing: probeevent: Fix to support minus offset from symbol
rtlwifi: rtl8723be: Fix loss of signal
brcmfmac: fix P2P_DEVICE ethernet address generation
acpi, numa: fix pxm to online numa node associations
drm: udl: Properly check framebuffer mmap offsets
drm/radeon: Don't turn off DP sink when disconnected
drm/vmwgfx: Fix a destoy-while-held mutex problem.
x86/mm: implement free pmd/pte page interfaces
mm/vmalloc: add interfaces to free unmapped page table
libata: Modify quirks for MX100 to limit NCQ_TRIM quirk to MU01 version
libata: Make Crucial BX100 500GB LPM quirk apply to all firmware versions
libata: Apply NOLPM quirk to Crucial M500 480 and 960GB SSDs
libata: Enable queued TRIM for Samsung SSD 860
libata: disable LPM for Crucial BX100 SSD 500GB drive
libata: Apply NOLPM quirk to Crucial MX100 512GB SSDs
libata: remove WARN() for DMA or PIO command without data
libata: fix length validation of ATAPI-relayed SCSI commands
Bluetooth: btusb: Fix quirk for Atheros 1525/QCA6174
clk: bcm2835: Protect sections updating shared registers
ahci: Add PCI-id for the Highpoint Rocketraid 644L card
PCI: Add function 1 DMA alias quirk for Highpoint RocketRAID 644L
mmc: dw_mmc: fix falling from idmac to PIO mode when dw_mci_reset occurs
ALSA: hda/realtek - Always immediately update mute LED with pin VREF
ALSA: aloop: Fix access to not-yet-ready substream via cable
ALSA: aloop: Sync stale timer before release
ALSA: usb-audio: Fix parsing descriptor of UAC2 processing unit
iio: st_pressure: st_accel: pass correct platform data to init
MIPS: ralink: Remove ralink_halt()
ANDROID: cpufreq: times: fix proc_time_in_state_show
dtc: turn off dtc unit address warnings by default
Linux 4.4.124
RDMA/ucma: Fix access to non-initialized CM_ID object
dmaengine: ti-dma-crossbar: Fix event mapping for TPCC_EVT_MUX_60_63
clk: si5351: Rename internal plls to avoid name collisions
nfsd4: permit layoutget of executable-only files
RDMA/ocrdma: Fix permissions for OCRDMA_RESET_STATS
ip6_vti: adjust vti mtu according to mtu of lower device
iommu/vt-d: clean up pr_irq if request_threaded_irq fails
pinctrl: Really force states during suspend/resume
coresight: Fix disabling of CoreSight TPIU
pty: cancel pty slave port buf's work in tty_release
drm/omap: DMM: Check for DMM readiness after successful transaction commit
vgacon: Set VGA struct resource types
IB/umem: Fix use of npages/nmap fields
RDMA/cma: Use correct size when writing netlink stats
IB/ipoib: Avoid memory leak if the SA returns a different DGID
mmc: avoid removing non-removable hosts during suspend
platform/chrome: Use proper protocol transfer function
cros_ec: fix nul-termination for firmware build info
media: [RESEND] media: dvb-frontends: Add delay to Si2168 restart
media: bt8xx: Fix err 'bt878_probe()'
rtlwifi: rtl_pci: Fix the bug when inactiveps is enabled.
RDMA/iwpm: Fix uninitialized error code in iwpm_send_mapinfo()
drm/msm: fix leak in failed get_pages
media: c8sectpfe: fix potential NULL pointer dereference in c8sectpfe_timer_interrupt
Bluetooth: hci_qca: Avoid setup failure on missing rampatch
perf tests kmod-path: Don't fail if compressed modules aren't supported
rtc: ds1374: wdt: Fix stop/start ioctl always returning -EINVAL
rtc: ds1374: wdt: Fix issue with timeout scaling from secs to wdt ticks
cifs: small underflow in cnvrtDosUnixTm()
net: hns: fix ethtool_get_strings overflow in hns driver
sm501fb: don't return zero on failure path in sm501fb_start()
video: fbdev: udlfb: Fix buffer on stack
tcm_fileio: Prevent information leak for short reads
ia64: fix module loading for gcc-5.4
md/raid10: skip spare disk as 'first' disk
Input: twl4030-pwrbutton - use correct device for irq request
power: supply: pda_power: move from timer to delayed_work
bnx2x: Align RX buffers
drm/nouveau/kms: Increase max retries in scanout position queries.
ACPI / PMIC: xpower: Fix power_table addresses
ipmi/watchdog: fix wdog hang on panic waiting for ipmi response
ARM: DRA7: clockdomain: Change the CLKTRCTRL of CM_PCIE_CLKSTCTRL to SW_WKUP
mmc: sdhci-of-esdhc: limit SD clock for ls1012a/ls1046a
staging: wilc1000: fix unchecked return value
staging: unisys: visorhba: fix s-Par to boot with option CONFIG_VMAP_STACK set to y
mtip32xx: use runtime tag to initialize command header
mfd: palmas: Reset the POWERHOLD mux during power off
mac80211: don't parse encrypted management frames in ieee80211_frame_acked
Btrfs: send, fix file hole not being preserved due to inline extent
rndis_wlan: add return value validation
mt7601u: check return value of alloc_skb
iio: st_pressure: st_accel: Initialise sensor platform data properly
NFS: don't try to cross a mountpount when there isn't one there.
infiniband/uverbs: Fix integer overflows
scsi: mac_esp: Replace bogus memory barrier with spinlock
qlcnic: fix unchecked return value
wan: pc300too: abort path on failure
mmc: host: omap_hsmmc: checking for NULL instead of IS_ERR()
openvswitch: Delete conntrack entry clashing with an expectation.
netfilter: xt_CT: fix refcnt leak on error path
Fix driver usage of 128B WQEs when WQ_CREATE is V1.
ASoC: Intel: Skylake: Uninitialized variable in probe_codec()
IB/mlx4: Change vma from shared to private
IB/mlx4: Take write semaphore when changing the vma struct
HSI: ssi_protocol: double free in ssip_pn_xmit()
IB/ipoib: Update broadcast object if PKey value was changed in index 0
IB/ipoib: Fix deadlock between ipoib_stop and mcast join flow
ALSA: hda - Fix headset microphone detection for ASUS N551 and N751
e1000e: fix timing for 82579 Gigabit Ethernet controller
tcp: remove poll() flakes with FastOpen
NFS: Fix missing pg_cleanup after nfs_pageio_cond_complete()
md/raid10: wait up frozen array in handle_write_completed
iommu/omap: Register driver before setting IOMMU ops
ARM: 8668/1: ftrace: Fix dynamic ftrace with DEBUG_RODATA and !FRAME_POINTER
KVM: PPC: Book3S PR: Exit KVM on failed mapping
scsi: virtio_scsi: Always try to read VPD pages
clk: ns2: Correct SDIO bits
ath: Fix updating radar flags for coutry code India
spi: dw: Disable clock after unregistering the host
media/dvb-core: Race condition when writing to CAM
net: ipv6: send unsolicited NA on admin up
i2c: i2c-scmi: add a MS HID
genirq: Use irqd_get_trigger_type to compare the trigger type for shared IRQs
cpufreq/sh: Replace racy task affinity logic
ACPI/processor: Replace racy task affinity logic
ACPI/processor: Fix error handling in __acpi_processor_start()
time: Change posix clocks ops interfaces to use timespec64
Input: ar1021_i2c - fix too long name in driver's device table
rtc: cmos: Do not assume irq 8 for rtc when there are no legacy irqs
x86: i8259: export legacy_pic symbol
regulator: anatop: set default voltage selector for pcie
platform/x86: asus-nb-wmi: Add wapf4 quirk for the X302UA
staging: android: ashmem: Fix possible deadlock in ashmem_ioctl
CIFS: Enable encryption during session setup phase
SMB3: Validate negotiate request must always be signed
tpm_tis: fix potential buffer overruns caused by bit glitches on the bus
tpm: fix potential buffer overruns caused by bit glitches on the bus
BACKPORT, FROMLIST: crypto: arm64/speck - add NEON-accelerated implementation of Speck-XTS
Linux 4.4.123
bpf: fix incorrect sign extension in check_alu_op()
usb: gadget: bdc: 64-bit pointer capability check
USB: gadget: udc: Add missing platform_device_put() on error in bdc_pci_probe()
btrfs: Fix use-after-free when cleaning up fs_devs with a single stale device
btrfs: alloc_chunk: fix DUP stripe size handling
ARM: dts: LogicPD Torpedo: Fix I2C1 pinmux
scsi: sg: only check for dxfer_len greater than 256M
scsi: sg: fix static checker warning in sg_is_valid_dxfer
scsi: sg: fix SG_DXFER_FROM_DEV transfers
irqchip/gic-v3-its: Ensure nr_ites >= nr_lpis
fs/aio: Use RCU accessors for kioctx_table->table[]
fs/aio: Add explicit RCU grace period when freeing kioctx
lock_parent() needs to recheck if dentry got __dentry_kill'ed under it
fs: Teach path_connected to handle nfs filesystems with multiple roots.
drm/amdgpu/dce: Don't turn off DP sink when disconnected
ALSA: seq: Clear client entry before deleting else at closing
ALSA: seq: Fix possible UAF in snd_seq_check_queue()
ALSA: hda - Revert power_save option default value
ALSA: pcm: Fix UAF in snd_pcm_oss_get_formats()
x86/mm: Fix vmalloc_fault to use pXd_large
x86/vm86/32: Fix POPF emulation
selftests/x86/entry_from_vm86: Add test cases for POPF
selftests/x86: Add tests for the STR and SLDT instructions
selftests/x86: Add tests for User-Mode Instruction Prevention
selftests/x86/entry_from_vm86: Exit with 1 if we fail
ima: relax requiring a file signature for new files with zero length
rcutorture/configinit: Fix build directory error message
ipvlan: add L2 check for packets arriving via virtual devices
ASoC: nuc900: Fix a loop timeout test
mac80211: remove BUG() when interface type is invalid
mac80211_hwsim: enforce PS_MANUAL_POLL to be set after PS_ENABLED
agp/intel: Flush all chipset writes after updating the GGTT
drm/amdkfd: Fix memory leaks in kfd topology
veth: set peer GSO values
media: cpia2: Fix a couple off by one bugs
scsi: dh: add new rdac devices
scsi: devinfo: apply to HP XP the same flags as Hitachi VSP
scsi: core: scsi_get_device_flags_keyed(): Always return device flags
spi: sun6i: disable/unprepare clocks on remove
tools/usbip: fixes build with musl libc toolchain
ath10k: fix invalid STS_CAP_OFFSET_MASK
clk: qcom: msm8916: fix mnd_width for codec_digcodec
cpufreq: Fix governor module removal race
ath10k: update tdls teardown state to target
ARM: dts: omap3-n900: Fix the audio CODEC's reset pin
ARM: dts: am335x-pepper: Fix the audio CODEC's reset pin
mtd: nand: fix interpretation of NAND_CMD_NONE in nand_command[_lp]()
net: xfrm: allow clearing socket xfrm policies.
test_firmware: fix setting old custom fw path back on exit
sched: Stop resched_cpu() from sending IPIs to offline CPUs
sched: Stop switched_to_rt() from sending IPIs to offline CPUs
ARM: dts: exynos: Correct Trats2 panel reset line
HID: elo: clear BTN_LEFT mapping
video/hdmi: Allow "empty" HDMI infoframes
drm/edid: set ELD connector type in drm_edid_to_eld()
wil6210: fix memory access violation in wil_memcpy_from/toio_32
pwm: tegra: Increase precision in PWM rate calculation
kprobes/x86: Set kprobes pages read-only
kprobes/x86: Fix kprobe-booster not to boost far call instructions
scsi: sg: close race condition in sg_remove_sfp_usercontext()
scsi: sg: check for valid direction before starting the request
perf session: Don't rely on evlist in pipe mode
perf inject: Copy events when reordering events in pipe mode
drivers/perf: arm_pmu: handle no platform_device
usb: gadget: dummy_hcd: Fix wrong power status bit clear/reset in dummy_hub_control()
usb: dwc2: Make sure we disconnect the gadget state
md/raid6: Fix anomily when recovering a single device in RAID6.
regulator: isl9305: fix array size
MIPS: r2-on-r6-emu: Clear BLTZALL and BGEZALL debugfs counters
MIPS: r2-on-r6-emu: Fix BLEZL and BGTZL identification
MIPS: BPF: Fix multiple problems in JIT skb access helpers.
MIPS: BPF: Quit clobbering callee saved registers in JIT code.
coresight: Fixes coresight DT parse to get correct output port ID.
drm/amdgpu: Fail fb creation from imported dma-bufs. (v2)
drm/radeon: Fail fb creation from imported dma-bufs.
video: ARM CLCD: fix dma allocation size
iommu/iova: Fix underflow bug in __alloc_and_insert_iova_range
apparmor: Make path_max parameter readonly
scsi: ses: don't get power status of SES device slot on probe
fm10k: correctly check if interface is removed
ALSA: firewire-digi00x: handle all MIDI messages on streaming packets
reiserfs: Make cancel_old_flush() reliable
ARM: dts: koelsch: Correct clock frequency of X2 DU clock input
net/faraday: Add missing include of of.h
powerpc: Avoid taking a data miss on every userspace instruction miss
ARM: dts: r8a7791: Correct parent of SSI[0-9] clocks
ARM: dts: r8a7790: Correct parent of SSI[0-9] clocks
NFC: nfcmrvl: double free on error path
NFC: nfcmrvl: Include unaligned.h instead of access_ok.h
vxlan: vxlan dev should inherit lowerdev's gso_max_size
drm/vmwgfx: Fixes to vmwgfx_fb
braille-console: Fix value returned by _braille_console_setup
bonding: refine bond_fold_stats() wrap detection
f2fs: relax node version check for victim data in gc
blk-throttle: make sure expire time isn't too big
mm: Fix false-positive VM_BUG_ON() in page_cache_{get,add}_speculative()
driver: (adm1275) set the m,b and R coefficients correctly for power
dmaengine: imx-sdma: add 1ms delay to ensure SDMA channel is stopped
tcp: sysctl: Fix a race to avoid unexpected 0 window from space
spi: omap2-mcspi: poll OMAP2_MCSPI_CHSTAT_RXS for PIO transfer
ASoC: rcar: ssi: don't set SSICR.CKDV = 000 with SSIWSR.CONT
sched: act_csum: don't mangle TCP and UDP GSO packets
Input: qt1070 - add OF device ID table
sysrq: Reset the watchdog timers while displaying high-resolution timers
timers, sched_clock: Update timeout for clock wrap
media: i2c/soc_camera: fix ov6650 sensor getting wrong clock
scsi: ipr: Fix missed EH wakeup
solo6x10: release vb2 buffers in solo_stop_streaming()
of: fix of_device_get_modalias returned length when truncating buffers
batman-adv: handle race condition for claims between gateways
ARM: dts: Adjust moxart IRQ controller and flags
net/8021q: create device with all possible features in wanted_features
HID: clamp input to logical range if no null state
perf probe: Return errno when not hitting any event
ath10k: disallow DFS simulation if DFS channel is not enabled
drm: Defer disabling the vblank IRQ until the next interrupt (for instant-off)
drivers: net: xgene: Fix hardware checksum setting
perf tools: Make perf_event__synthesize_mmap_events() scale
i40e: fix ethtool to get EEPROM data from X722 interface
i40e: Acquire NVM lock before reads on all devices
perf sort: Fix segfault with basic block 'cycles' sort dimension
selinux: check for address length in selinux_socket_bind()
PCI/MSI: Stop disabling MSI/MSI-X in pci_device_shutdown()
ath10k: fix a warning during channel switch with multiple vaps
drm: qxl: Don't alloc fbdev if emulation is not supported
HID: reject input outside logical range only if null state is set
staging: wilc1000: add check for kmalloc allocation failure.
staging: speakup: Replace BUG_ON() with WARN_ON().
Input: tsc2007 - check for presence and power down tsc2007 during probe
blkcg: fix double free of new_blkg in blkcg_init_queue
ANDROID: cpufreq: times: avoid prematurely freeing uid_entry
ANDROID: Use standard logging functions in goldfish_pipe
ANDROID: Fix whitespace in goldfish
staging: android: ashmem: Fix possible deadlock in ashmem_ioctl
llist: clang: introduce member_address_is_nonnull()
Linux 4.4.122
fixup: sctp: verify size of a new chunk in _sctp_make_chunk()
serial: 8250_pci: Add Brainboxes UC-260 4 port serial device
usb: gadget: f_fs: Fix use-after-free in ffs_fs_kill_sb()
usb: usbmon: Read text within supplied buffer size
USB: usbmon: remove assignment from IS_ERR argument
usb: quirks: add control message delay for 1b1c:1b20
USB: storage: Add JMicron bridge 152d:2567 to unusual_devs.h
staging: android: ashmem: Fix lockdep issue during llseek
staging: comedi: fix comedi_nsamples_left.
uas: fix comparison for error code
tty/serial: atmel: add new version check for usart
serial: sh-sci: prevent lockup on full TTY buffers
x86: Treat R_X86_64_PLT32 as R_X86_64_PC32
x86/module: Detect and skip invalid relocations
Revert "ARM: dts: LogicPD Torpedo: Fix I2C1 pinmux"
NFS: Fix an incorrect type in struct nfs_direct_req
scsi: qla2xxx: Replace fcport alloc with qla2x00_alloc_fcport
ubi: Fix race condition between ubi volume creation and udev
ext4: inplace xattr block update fails to deduplicate blocks
netfilter: x_tables: pack percpu counter allocations
netfilter: x_tables: pass xt_counters struct to counter allocator
netfilter: x_tables: pass xt_counters struct instead of packet counter
netfilter: use skb_to_full_sk in ip_route_me_harder
netfilter: ipv6: fix use-after-free Write in nf_nat_ipv6_manip_pkt
netfilter: bridge: ebt_among: add missing match size checks
netfilter: ebtables: CONFIG_COMPAT: don't trust userland offsets
netfilter: IDLETIMER: be syzkaller friendly
netfilter: nat: cope with negative port range
netfilter: x_tables: fix missing timer initialization in xt_LED
netfilter: add back stackpointer size checks
tc358743: fix register i2c_rd/wr function fix
Input: tca8418_keypad - remove double read of key event register
ARM: omap2: hide omap3_save_secure_ram on non-OMAP3 builds
netfilter: nfnetlink_queue: fix timestamp attribute
watchdog: hpwdt: fix unused variable warning
watchdog: hpwdt: Check source of NMI
watchdog: hpwdt: SMBIOS check
nospec: Include <asm/barrier.h> dependency
ALSA: hda: add dock and led support for HP ProBook 640 G2
ALSA: hda: add dock and led support for HP EliteBook 820 G3
ALSA: seq: More protection for concurrent write and ioctl races
ALSA: seq: Don't allow resizing pool in use
ALSA: hda/realtek - Fix dock line-out volume on Dell Precision 7520
x86/MCE: Serialize sysfs changes
bcache: don't attach backing with duplicate UUID
kbuild: Handle builtin dtb file names containing hyphens
loop: Fix lost writes caused by missing flag
Input: matrix_keypad - fix race when disabling interrupts
MIPS: OCTEON: irq: Check for null return on kzalloc allocation
MIPS: ath25: Check for kzalloc allocation failure
MIPS: BMIPS: Do not mask IPIs during suspend
drm/amdgpu: fix KV harvesting
drm/radeon: fix KV harvesting
drm/amdgpu: Notify sbios device ready before send request
drm/amdgpu: Fix deadlock on runtime suspend
drm/radeon: Fix deadlock on runtime suspend
drm/nouveau: Fix deadlock on runtime suspend
drm: Allow determining if current task is output poll worker
workqueue: Allow retrieval of current task's work struct
scsi: qla2xxx: Fix NULL pointer crash due to active timer for ABTS
RDMA/mlx5: Fix integer overflow while resizing CQ
RDMA/ucma: Check that user doesn't overflow QP state
RDMA/ucma: Limit possible option size
ANDROID: ranchu: 32 bit framebuffer support
ANDROID: Address checkpatch warnings in goldfishfb
ANDROID: Address checkpatch.pl warnings in goldfish_pipe
ANDROID: sdcardfs: fix lock issue on 32 bit/SMP architectures
ANDROID: goldfish: Fix typo in goldfish_cmd_locked() call
ANDROID: Address checkpatch.pl warnings in goldfish_pipe_v2
FROMLIST: f2fs: don't put dentry page in pagecache into highmem
Linux 4.4.121
btrfs: preserve i_mode if __btrfs_set_acl() fails
bpf, x64: implement retpoline for tail call
dm io: fix duplicate bio completion due to missing ref count
mpls, nospec: Sanitize array index in mpls_label_ok()
net: mpls: Pull common label check into helper
sctp: verify size of a new chunk in _sctp_make_chunk()
s390/qeth: fix IPA command submission race
s390/qeth: fix SETIP command handling
sctp: fix dst refcnt leak in sctp_v6_get_dst()
sctp: fix dst refcnt leak in sctp_v4_get_dst
udplite: fix partial checksum initialization
ppp: prevent unregistered channels from connecting to PPP units
netlink: ensure to loop over all netns in genlmsg_multicast_allns()
net: ipv4: don't allow setting net.ipv4.route.min_pmtu below 68
net: fix race on decreasing number of TX queues
ipv6 sit: work around bogus gcc-8 -Wrestrict warning
hdlc_ppp: carrier detect ok, don't turn off negotiation
fib_semantics: Don't match route with mismatching tclassid
bridge: check brport attr show in brport_show
Revert "led: core: Fix brightness setting when setting delay_off=0"
x86/spectre: Fix an error message
leds: do not overflow sysfs buffer in led_trigger_show
x86/apic/vector: Handle legacy irq data correctly
ARM: dts: LogicPD Torpedo: Fix I2C1 pinmux
btrfs: Don't clear SGID when inheriting ACLs
x86/syscall: Sanitize syscall table de-references under speculation fix
KVM: mmu: Fix overlap between public and private memslots
ARM: mvebu: Fix broken PL310_ERRATA_753970 selects
nospec: Allow index argument to have const-qualified type
media: m88ds3103: don't call a non-initalized function
cpufreq: s3c24xx: Fix broken s3c_cpufreq_init()
ALSA: hda: Add a power_save blacklist
ALSA: usb-audio: Add a quirck for B&W PX headphones
tpm_i2c_nuvoton: fix potential buffer overruns caused by bit glitches on the bus
tpm_i2c_infineon: fix potential buffer overruns caused by bit glitches on the bus
tpm: st33zp24: fix potential buffer overruns caused by bit glitches on the bus
ANDROID: Delete the goldfish_nand driver.
ANDROID: Add input support for Android Wear.
ANDROID: proc: fix config & includes for /proc/uid
FROMLIST: ARM: amba: Don't read past the end of sysfs "driver_override" buffer
UPSTREAM: ANDROID: binder: remove WARN() for redundant txn error
ANDROID: cpufreq: times: Add missing includes
ANDROID: cpufreq: Add time_in_state to /proc/uid directories
ANDROID: proc: Add /proc/uid directory
ANDROID: cpufreq: times: track per-uid time in state
ANDROID: cpufreq: track per-task time in state
Conflicts:
drivers/gpu/drm/msm/msm_gem.c
drivers/net/wireless/ath/regd.c
kernel/sched/core.c
Change-Id: I9bb7b5a062415da6925a5a56a34e6eb066a53320
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
Add time in state data to task structs, and create
/proc/<pid>/time_in_state files to show how long each individual task
has run at each frequency.
Create a CONFIG_CPU_FREQ_TIMES option to enable/disable this tracking.
Signed-off-by: Connor O'Brien <connoro@google.com>
Bug: 72339335
Test: Read /proc/<pid>/time_in_state
Change-Id: Ia6456754f4cb1e83b2bc35efa8fbe9f8696febc8
* refs/heads/tmp-6fc0573:
Linux 4.4.71
xfs: only return -errno or success from attr ->put_listent
xfs: in _attrlist_by_handle, copy the cursor back to userspace
xfs: fix unaligned access in xfs_btree_visit_blocks
xfs: bad assertion for delalloc an extent that start at i_size
xfs: fix indlen accounting error on partial delalloc conversion
xfs: wait on new inodes during quotaoff dquot release
xfs: update ag iterator to support wait on new inodes
xfs: support ability to wait on new inodes
xfs: fix up quotacheck buffer list error handling
xfs: prevent multi-fsb dir readahead from reading random blocks
xfs: handle array index overrun in xfs_dir2_leaf_readbuf()
xfs: fix over-copying of getbmap parameters from userspace
xfs: fix off-by-one on max nr_pages in xfs_find_get_desired_pgoff()
xfs: Fix missed holes in SEEK_HOLE implementation
mlock: fix mlock count can not decrease in race condition
mm/migrate: fix refcount handling when !hugepage_migration_supported()
drm/gma500/psb: Actually use VBT mode when it is found
slub/memcg: cure the brainless abuse of sysfs attributes
ALSA: hda - apply STAC_9200_DELL_M22 quirk for Dell Latitude D430
pcmcia: remove left-over %Z format
drm/radeon: Unbreak HPD handling for r600+
drm/radeon/ci: disable mclk switching for high refresh rates (v2)
scsi: mpt3sas: Force request partial completion alignment
HID: wacom: Have wacom_tpc_irq guard against possible NULL dereference
mmc: sdhci-iproc: suppress spurious interrupt with Multiblock read
i2c: i2c-tiny-usb: fix buffer not being DMA capable
vlan: Fix tcp checksum offloads in Q-in-Q vlans
net: phy: marvell: Limit errata to 88m1101
netem: fix skb_orphan_partial()
ipv4: add reference counting to metrics
sctp: fix ICMP processing if skb is non-linear
tcp: avoid fastopen API to be used on AF_UNSPEC
virtio-net: enable TSO/checksum offloads for Q-in-Q vlans
be2net: Fix offload features for Q-in-Q packets
ipv6: fix out of bound writes in __ip6_append_data()
bridge: start hello_timer when enabling KERNEL_STP in br_stp_start
qmi_wwan: add another Lenovo EM74xx device ID
bridge: netlink: check vlan_default_pvid range
ipv6: Check ip6_find_1stfragopt() return value properly.
ipv6: Prevent overrun when parsing v6 header options
net: Improve handling of failures on link and route dumps
tcp: eliminate negative reordering in tcp_clean_rtx_queue
sctp: do not inherit ipv6_{mc|ac|fl}_list from parent
sctp: fix src address selection if using secondary addresses for ipv6
tcp: avoid fragmenting peculiar skbs in SACK
s390/qeth: avoid null pointer dereference on OSN
s390/qeth: unbreak OSM and OSN support
s390/qeth: handle sysfs error during initialization
ipv6/dccp: do not inherit ipv6_mc_list from parent
dccp/tcp: do not inherit mc_list from parent
sparc: Fix -Wstringop-overflow warning
android: base-cfg: disable CONFIG_NFS_FS and CONFIG_NFSD
schedstats/eas: guard properly to avoid breaking non-smp schedstats users
BACKPORT: f2fs: sanity check size of nat and sit cache
FROMLIST: f2fs: sanity check checkpoint segno and blkoff
sched/tune: don't use schedtune before it is ready
sched/fair: use SCHED_CAPACITY_SCALE for energy normalization
sched/{fair,tune}: use reciprocal_value to compute boost margin
sched/tune: Initialize raw_spin_lock in boosted_groups
sched/tune: report when SchedTune has not been initialized
sched/tune: fix sched_energy_diff tracepoint
sched/tune: increase group count to 5
cpufreq/schedutil: use boosted_cpu_util for PELT to match WALT
sched/fair: Fix sched_group_energy() to support per-cpu capacity states
sched/fair: discount task contribution to find CPU with lowest utilization
sched/fair: ensure utilization signals are synchronized before use
sched/fair: remove task util from own cpu when placing waking task
trace:sched: Make util_avg in load_avg trace reflect PELT/WALT as used
sched/fair: Add eas (& cas) specific rq, sd and task stats
sched/core: Fix PELT jump to max OPP upon util increase
sched: EAS & 'single cpu per cluster'/cpu hotplug interoperability
UPSTREAM: sched/core: Fix group_entity's share update
UPSTREAM: sched/fair: Fix calc_cfs_shares() fixed point arithmetics width confusion
UPSTREAM: sched/fair: Fix incorrect task group ->load_avg
UPSTREAM: sched/fair: Fix effective_load() to consistently use smoothed load
UPSTREAM: sched/fair: Propagate asynchrous detach
UPSTREAM: sched/fair: Propagate load during synchronous attach/detach
UPSTREAM: sched/fair: Fix hierarchical order in rq->leaf_cfs_rq_list
BACKPORT: sched/fair: Factorize PELT update
UPSTREAM: sched/fair: Factorize attach/detach entity
UPSTREAM: sched/fair: Improve PELT stuff some more
UPSTREAM: sched/fair: Apply more PELT fixes
UPSTREAM: sched/fair: Fix post_init_entity_util_avg() serialization
BACKPORT: sched/fair: Initiate a new task's util avg to a bounded value
sched/fair: Simplify idle_idx handling in select_idle_sibling()
sched/fair: refactor find_best_target() for simplicity
sched/fair: Change cpu iteration order in find_best_target()
sched/core: Add first cpu w/ max/min orig capacity to root domain
sched/core: Remove remnants of commit fd5c98da1a42
sched: Remove sysctl_sched_is_big_little
sched/fair: Code !is_big_little path into select_energy_cpu_brute()
EAS: sched/fair: Re-integrate 'honor sync wakeups' into wakeup path
Fixup!: sched/fair.c: Set SchedTune specific struct energy_env.task
sched/fair: Energy-aware wake-up task placement
sched/fair: Add energy_diff dead-zone margin
sched/fair: Decommission energy_aware_wake_cpu()
sched/fair: Do not force want_affine eq. true if EAS is enabled
arm64: Set SD_ASYM_CPUCAPACITY sched_domain flag on DIE level
UPSTREAM: sched/fair: Fix incorrect comment for capacity_margin
UPSTREAM: sched/fair: Avoid pulling tasks from non-overloaded higher capacity groups
UPSTREAM: sched/fair: Add per-CPU min capacity to sched_group_capacity
UPSTREAM: sched/fair: Consider spare capacity in find_idlest_group()
UPSTREAM: sched/fair: Compute task/cpu utilization at wake-up correctly
UPSTREAM: sched/fair: Let asymmetric CPU configurations balance at wake-up
UPSTREAM: sched/core: Enable SD_BALANCE_WAKE for asymmetric capacity systems
UPSTREAM: sched/core: Pass child domain into sd_init()
UPSTREAM: sched/core: Introduce SD_ASYM_CPUCAPACITY sched_domain topology flag
UPSTREAM: sched/core: Remove unnecessary NULL-pointer check
UPSTREAM: sched/fair: Optimize find_idlest_cpu() when there is no choice
BACKPORT: sched/fair: Make the use of prev_cpu consistent in the wakeup path
UPSTREAM: sched/core: Fix power to capacity renaming in comment
Partial Revert: "WIP: sched: Add cpu capacity awareness to wakeup balancing"
Revert "WIP: sched: Consider spare cpu capacity at task wake-up"
FROM-LIST: cpufreq: schedutil: Redefine the rate_limit_us tunable
cpufreq: schedutil: add up/down frequency transition rate limits
trace/sched: add rq utilization signal for WALT
sched/cpufreq: make schedutil use WALT signal
sched: cpufreq: use rt_avg as estimate of required RT CPU capacity
cpufreq: schedutil: move slow path from workqueue to SCHED_FIFO task
BACKPORT: kthread: allow to cancel kthread work
sched/cpufreq: fix tunables for schedfreq governor
BACKPORT: cpufreq: schedutil: New governor based on scheduler utilization data
sched: backport cpufreq hooks from 4.9-rc4
ANDROID: Kconfig: add depends for UID_SYS_STATS
ANDROID: hid: uhid: implement refcount for open and close
Revert "ext4: require encryption feature for EXT4_IOC_SET_ENCRYPTION_POLICY"
ANDROID: mnt: Fix next_descendent
Conflicts:
include/trace/events/sched.h
kernel/sched/Makefile
kernel/sched/core.c
kernel/sched/fair.c
kernel/sched/sched.h
Change-Id: I55318828f2c858e192ac7015bcf2bf0ec5c5b2c5
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
Add a new cpufreq scaling governor, called "schedutil", that uses
scheduler-provided CPU utilization information as input for making
its decisions.
Doing that is possible after commit 34e2c55 (cpufreq: Add
mechanism for registering utilization update callbacks) that
introduced cpufreq_update_util() called by the scheduler on
utilization changes (from CFS) and RT/DL task status updates.
In particular, CPU frequency scaling decisions may be based on
the the utilization data passed to cpufreq_update_util() by CFS.
The new governor is relatively simple.
The frequency selection formula used by it depends on whether or not
the utilization is frequency-invariant. In the frequency-invariant
case the new CPU frequency is given by
next_freq = 1.25 * max_freq * util / max
where util and max are the last two arguments of cpufreq_update_util().
In turn, if util is not frequency-invariant, the maximum frequency in
the above formula is replaced with the current frequency of the CPU:
next_freq = 1.25 * curr_freq * util / max
The coefficient 1.25 corresponds to the frequency tipping point at
(util / max) = 0.8.
All of the computations are carried out in the utilization update
handlers provided by the new governor. One of those handlers is
used for cpufreq policies shared between multiple CPUs and the other
one is for policies with one CPU only (and therefore it doesn't need
to use any extra synchronization means).
The governor supports fast frequency switching if that is supported
by the cpufreq driver in use and possible for the given policy.
In the fast switching case, all operations of the governor take
place in its utilization update handlers. If fast switching cannot
be used, the frequency switch operations are carried out with the
help of a work item which only calls __cpufreq_driver_target()
(under a mutex) to trigger a frequency update (to a value already
computed beforehand in one of the utilization update handlers).
Currently, the governor treats all of the RT and DL tasks as
"unknown utilization" and sets the frequency to the allowed
maximum when updated from the RT or DL sched classes. That
heavy-handed approach should be replaced with something more
subtle and specifically targeted at RT and DL tasks.
The governor shares some tunables management code with the
"ondemand" and "conservative" governors and uses some common
definitions from cpufreq_governor.h, but apart from that it
is stand-alone.
Change-Id: I03876e622768e4b3ee4dc28682af7cce771f2f4c
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
(cherry-picked from 9bdcb44e391da5c41b98573bf0305a0e0b1c9569)
[ Backport the schedutil cpufreq governor from 4.9. Some cpufreq
tunable infrastructure as well as the resolve_freq API is also
backported as those are dependencies]
Signed-off-by: Steve Muckle <smuckle@linaro.org>
[trivial cherry-picking fixes]
Signed-off-by: Juri Lelli <juri.lelli@arm.com>
[fixed default governor machinery]
Signed-off-by: Chris Redpath <chris.redpath@arm.com>
This is a snapshot of qcom-cpufreq as of msm-3.10 commit
acdce027751d5a7488b283f0ce3111f873a5816d (Merge "defconfig: arm64:
Enable ONESHOT_SYNC for msm8994")
Change-Id: Idb99a856330566ffad6309c48edabb220cee7917
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
[junjiew@codeaurora.org: resolved conflicts in Kconfig.arm
and Makefile. Dropped dependency on ARCH_MSM.]
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
When certain bursty and important events take place, it might take a while
for the current cpufreq governor to notice the new load and react to it.
That would result in poor user experience. To alleviate this, the cpu-boost
driver boosts the frequency of a CPU for a short duration to maintain good
user experience while the governor catches up.
Specifically, this commit deals with ensuring that when "important" tasks
migrate from a fast CPU to a slow CPU, the frequency of the slow CPU is
boosted to be at least as high as the fast CPU for a short duration.
Since this driver enforces the boost by hooking into standard cpufreq
ADJUST notifiers, it has several advantages:
- More portable across kernel versions where the cpufreq internals might
have been rewritten.
- Governor agnostic and hence works with multiple governors like
conservative, ondemand, interactive, etc.
- Does not affect the sampling period/logic of existing governors.
- Can have the boost period adjusted independent of governor sampling
period.
Change-Id: Ibd814a20043d0aba64ee7637a4a79b9ffa1b0991
Signed-off-by: Saravana Kannan <skannan@codeaurora.org>
[rameezmustafa@codeaurora.org]: Port to msm-3.18]
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
[joonwoop@codeaurora.org: fixed conflict in drivers/cpufreq/Kconfig.]
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
This governor is designed for latency-sensitive workloads, such as
interactive user interfaces. The interactive governor aims to be
significantly more responsive to ramp CPU quickly up when CPU-intensive
activity begins.
Existing governors sample CPU load at a particular rate, typically
every X ms. This can lead to under-powering UI threads for the period of
time during which the user begins interacting with a previously-idle system
until the next sample period happens.
The 'interactive' governor uses a different approach. Instead of sampling
the CPU at a specified rate, the governor will check whether to scale the
CPU frequency up soon after coming out of idle. When the CPU comes out of
idle, a timer is configured to fire within 1-2 ticks. If the CPU is very
busy from exiting idle to when the timer fires then we assume the CPU is
underpowered and ramp to MAX speed.
If the CPU was not sufficiently busy to immediately ramp to MAX speed, then
the governor evaluates the CPU load since the last speed adjustment,
choosing the highest value between that longer-term load or the short-term
load since idle exit to determine the CPU speed to ramp to.
A realtime thread is used for scaling up, giving the remaining tasks the
CPU performance benefit, unlike existing governors which are more likely to
schedule rampup work to occur after your performance starved tasks have
completed.
The tuneables for this governor are:
/sys/devices/system/cpu/cpufreq/interactive/min_sample_time:
The minimum amount of time to spend at the current frequency before
ramping down. This is to ensure that the governor has seen enough
historic CPU load data to determine the appropriate workload.
Default is 80000 uS.
/sys/devices/system/cpu/cpufreq/interactive/go_maxspeed_load
The CPU load at which to ramp to max speed. Default is 85.
Change-Id: Ib2b362607c62f7c56d35f44a9ef3280f98c17585
Signed-off-by: Mike Chan <mike@android.com>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Bug: 3152864
As we've enabled multiplatform kernels on ARM, and greatly done away with
the contents under arch/arm/mach-*, there's still need for SoC-related
drivers to go somewhere.
Many of them go in through other driver trees, but we still have
drivers/soc to hold some of the "doesn't fit anywhere" lowlevel code
that might be shared between ARM and ARM64 (or just in general makes
sense to not have under the architecture directory).
This branch contains mostly such code:
- Drivers for qualcomm SoCs for SMEM, SMD and SMD-RPM, used to communicate
with power management blocks on these SoCs for use by clock, regulator and
bus frequency drivers.
- Allwinner Reduced Serial Bus driver, again used to communicate with PMICs.
- Drivers for ARM's SCPI (System Control Processor). Not to be confused with
PSCI (Power State Coordination Interface). SCPI is used to communicate with
the assistant embedded cores doing power management, and we have yet to see
how many of them will implement this for their hardware vs abstracting in
other ways (or not at all like in the past).
- To make confusion between SCPI and PSCI more likely, this release also
includes an update of PSCI to interface version 1.0.
- Rockchip support for power domains.
- A driver to talk to the firmware on Raspberry Pi.
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Olof Johansson:
"As we've enabled multiplatform kernels on ARM, and greatly done away
with the contents under arch/arm/mach-*, there's still need for
SoC-related drivers to go somewhere.
Many of them go in through other driver trees, but we still have
drivers/soc to hold some of the "doesn't fit anywhere" lowlevel code
that might be shared between ARM and ARM64 (or just in general makes
sense to not have under the architecture directory).
This branch contains mostly such code:
- Drivers for qualcomm SoCs for SMEM, SMD and SMD-RPM, used to
communicate with power management blocks on these SoCs for use by
clock, regulator and bus frequency drivers.
- Allwinner Reduced Serial Bus driver, again used to communicate with
PMICs.
- Drivers for ARM's SCPI (System Control Processor). Not to be
confused with PSCI (Power State Coordination Interface). SCPI is
used to communicate with the assistant embedded cores doing power
management, and we have yet to see how many of them will implement
this for their hardware vs abstracting in other ways (or not at all
like in the past).
- To make confusion between SCPI and PSCI more likely, this release
also includes an update of PSCI to interface version 1.0.
- Rockchip support for power domains.
- A driver to talk to the firmware on Raspberry Pi"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (57 commits)
soc: qcom: smd-rpm: Correct size of outgoing message
bus: sunxi-rsb: Add driver for Allwinner Reduced Serial Bus
bus: sunxi-rsb: Add Allwinner Reduced Serial Bus (RSB) controller bindings
ARM: bcm2835: add mutual inclusion protection
drivers: psci: make PSCI 1.0 functions initialization version dependent
dt-bindings: Correct paths in Rockchip power domains binding document
soc: rockchip: power-domain: don't try to print the clock name in error case
soc: qcom/smem: add HWSPINLOCK dependency
clk: berlin: add cpuclk
ARM: berlin: dts: add CLKID_CPU for BG2Q
ARM: bcm2835: Add the Raspberry Pi firmware driver
soc: qcom: smem: Move RPM message ram out of smem DT node
soc: qcom: smd-rpm: Correct the active vs sleep state flagging
soc: qcom: smd: delete unneeded of_node_put
firmware: qcom-scm: build for correct architecture level
soc: qcom: smd: Correct SMEM items for upper channels
qcom-scm: add missing prototype for qcom_scm_is_available()
qcom-scm: fix endianess issue in __qcom_scm_is_call_available
soc: qcom: smd: Reject send of too big packets
soc: qcom: smd: Handle big endian CPUs
...
* pm-opp:
PM / OPP: passing NULL to PTR_ERR()
PM / OPP: Move cpu specific code to opp/cpu.c
PM / OPP: Move opp core to its own directory
PM / OPP: Prefix exported opp routines with dev_pm_opp_
PM / OPP: Rename opp init/free table routines
PM / OPP: reuse of_parse_phandle()
This driver utilizes the methods introduced in a previous
patch titled - "ACPI: Introduce CPU performance controls using CPPC"
and enables usage with existing CPUFreq governors.
Signed-off-by: Ashwin Chaugule <ashwin.chaugule@linaro.org>
Reviewed-by: Al Stone <al.stone@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
On some ARM based systems, a separate Cortex-M based System Control
Processor(SCP) provides the overall power, clock, reset and system
control including CPU DVFS. SCPI Message Protocol is used to
communicate with the SCPI.
This patch adds a interface driver for adding OPPs and registering
the arm_big_little cpufreq driver for such systems.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: linux-pm@vger.kernel.org
OPP code is expanding and is already present in multiple directories
(cpufreq and power). Lets move it to its own directory, to manage it
better.
This also moves/renames the cpufreq_opp file to cpu.c, as it will
contain helpers for cpu device. Its not just about cpufreq, other
frameworks can use OPPs as well.
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This is a collection of a few late fixes and other misc. stuff that
had dependencies on things being merged from other trees.
The bulk of the changes are for samsung/exynos SoCs for some changes
that needed a few minor reworks so ended up a bit late. The others
are mainly for qcom SoCs: a couple fixes and some DTS updates.
There's one conflict with drivers/cpufreq/exynos-cpufreq.c because
it's now been completely removed, but there were some fixes that hit
mainline in the meantime.
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Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull late ARM SoC updates from Kevin Hilman:
"This is a collection of a few late fixes and other misc stuff that had
dependencies on things being merged from other trees.
The bulk of the changes are for samsung/exynos SoCs for some changes
that needed a few minor reworks so ended up a bit late. The others
are mainly for qcom SoCs: a couple fixes and some DTS updates"
* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (37 commits)
ARM: multi_v7_defconfig: Enable PBIAS regulator
soc: qcom: smd: Correct fBLOCKREADINTR handling
soc: qcom: smd: Use correct remote processor ID
soc: qcom: smem: Fix errant private access
ARM: dts: qcom: msm8974-sony-xperia-honami: Use stdout-path
ARM: dts: qcom: msm8960-cdp: Use stdout-path
ARM: dts: qcom: msm8660-surf: Use stdout-path
ARM: dts: qcom: ipq8064-ap148: Use stdout-path
ARM: dts: qcom: apq8084-mtp: Use stdout-path
ARM: dts: qcom: apq8084-ifc6540: Use stdout-path
ARM: dts: qcom: apq8074-dragonboard: Use stdout-path
ARM: dts: qcom: apq8064-ifc6410: Use stdout-path
ARM: dts: qcom: apq8064-cm-qs600: Use stdout-path
ARM: dts: qcom: Label serial nodes for aliasing and stdout-path
reset: ath79: Fix missing spin_lock_init
reset: Add (devm_)reset_control_get stub functions
ARM: EXYNOS: switch to using generic cpufreq driver for exynos4x12
cpufreq: exynos: Remove unselectable rule for arm-exynos-cpufreq.o
ARM: dts: add iommu property to JPEG device for exynos4
ARM: dts: enable SPI1 for exynos4412-odroidu3
...
- ACPICA update to upstream revision 20150818 including method
tracing extensions to allow more in-depth AML debugging in the
kernel and a number of assorted fixes and cleanups (Bob Moore,
Lv Zheng, Markus Elfring).
- ACPI sysfs code updates and a documentation update related to
AML method tracing (Lv Zheng).
- ACPI EC driver fix related to serialized evaluations of _Qxx
methods and ACPI tools updates allowing the EC userspace tool
to be built from the kernel source (Lv Zheng).
- ACPI processor driver updates preparing it for future
introduction of CPPC support and ACPI PCC mailbox driver
updates (Ashwin Chaugule).
- ACPI interrupts enumeration fix for a regression related
to the handling of IRQ attribute conflicts between MADT
and the ACPI namespace (Jiang Liu).
- Fixes related to ACPI device PM (Mika Westerberg, Srinidhi Kasagar).
- ACPI device registration code reorganization to separate the
sysfs-related code and bus type operations from the rest (Rafael
J Wysocki).
- Assorted cleanups in the ACPI core (Jarkko Nikula, Mathias Krause,
Andy Shevchenko, Rafael J Wysocki, Nicolas Iooss).
- ACPI cpufreq driver and ia64 cpufreq driver fixes and cleanups
(Pan Xinhui, Rafael J Wysocki).
- cpufreq core cleanups on top of the previous changes allowing it
to preseve its sysfs directories over system suspend/resume (Viresh
Kumar, Rafael J Wysocki, Sebastian Andrzej Siewior).
- cpufreq fixes and cleanups related to governors (Viresh Kumar).
- cpufreq updates (core and the cpufreq-dt driver) related to the
turbo/boost mode support (Viresh Kumar, Bartlomiej Zolnierkiewicz).
- New DT bindings for Operating Performance Points (OPP), support
for them in the OPP framework and in the cpufreq-dt driver plus
related OPP framework fixes and cleanups (Viresh Kumar).
- cpufreq powernv driver updates (Shilpasri G Bhat).
- New cpufreq driver for Mediatek MT8173 (Pi-Cheng Chen).
- Assorted cpufreq driver (speedstep-lib, sfi, integrator) cleanups
and fixes (Abhilash Jindal, Andrzej Hajda, Cristian Ardelean).
- intel_pstate driver updates including Skylake-S support, support
for enabling HW P-states per CPU and an additional vendor bypass
list entry (Kristen Carlson Accardi, Chen Yu, Ethan Zhao).
- cpuidle core fixes related to the handling of coupled idle states
(Xunlei Pang).
- intel_idle driver updates including Skylake Client support and
support for freeze-mode-specific idle states (Len Brown).
- Driver core updates related to power management (Andy Shevchenko,
Rafael J Wysocki).
- Generic power domains framework fixes and cleanups (Jon Hunter,
Geert Uytterhoeven, Rajendra Nayak, Ulf Hansson).
- Device PM QoS framework update to allow the latency tolerance
setting to be exposed to user space via sysfs (Mika Westerberg).
- devfreq support for PPMUv2 in Exynos5433 and a fix for an incorrect
exynos-ppmu DT binding (Chanwoo Choi, Javier Martinez Canillas).
- System sleep support updates (Alan Stern, Len Brown, SungEun Kim).
- rockchip-io AVS support updates (Heiko Stuebner).
- PM core clocks support fixup (Colin Ian King).
- Power capping RAPL driver update including support for Skylake H/S
and Broadwell-H (Radivoje Jovanovic, Seiichi Ikarashi).
- Generic device properties framework fixes related to the handling
of static (driver-provided) property sets (Andy Shevchenko).
- turbostat and cpupower updates (Len Brown, Shilpasri G Bhat,
Shreyas B Prabhu).
/
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Merge tag 'pm+acpi-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI updates from Rafael Wysocki:
"From the number of commits perspective, the biggest items are ACPICA
and cpufreq changes with the latter taking the lead (over 50 commits).
On the cpufreq front, there are many cleanups and minor fixes in the
core and governors, driver updates etc. We also have a new cpufreq
driver for Mediatek MT8173 chips.
ACPICA mostly updates its debug infrastructure and adds a number of
fixes and cleanups for a good measure.
The Operating Performance Points (OPP) framework is updated with new
DT bindings and support for them among other things.
We have a few updates of the generic power domains framework and a
reorganization of the ACPI device enumeration code and bus type
operations.
And a lot of fixes and cleanups all over.
Included is one branch from the MFD tree as it contains some
PM-related driver core and ACPI PM changes a few other commits are
based on.
Specifics:
- ACPICA update to upstream revision 20150818 including method
tracing extensions to allow more in-depth AML debugging in the
kernel and a number of assorted fixes and cleanups (Bob Moore, Lv
Zheng, Markus Elfring).
- ACPI sysfs code updates and a documentation update related to AML
method tracing (Lv Zheng).
- ACPI EC driver fix related to serialized evaluations of _Qxx
methods and ACPI tools updates allowing the EC userspace tool to be
built from the kernel source (Lv Zheng).
- ACPI processor driver updates preparing it for future introduction
of CPPC support and ACPI PCC mailbox driver updates (Ashwin
Chaugule).
- ACPI interrupts enumeration fix for a regression related to the
handling of IRQ attribute conflicts between MADT and the ACPI
namespace (Jiang Liu).
- Fixes related to ACPI device PM (Mika Westerberg, Srinidhi
Kasagar).
- ACPI device registration code reorganization to separate the
sysfs-related code and bus type operations from the rest (Rafael J
Wysocki).
- Assorted cleanups in the ACPI core (Jarkko Nikula, Mathias Krause,
Andy Shevchenko, Rafael J Wysocki, Nicolas Iooss).
- ACPI cpufreq driver and ia64 cpufreq driver fixes and cleanups (Pan
Xinhui, Rafael J Wysocki).
- cpufreq core cleanups on top of the previous changes allowing it to
preseve its sysfs directories over system suspend/resume (Viresh
Kumar, Rafael J Wysocki, Sebastian Andrzej Siewior).
- cpufreq fixes and cleanups related to governors (Viresh Kumar).
- cpufreq updates (core and the cpufreq-dt driver) related to the
turbo/boost mode support (Viresh Kumar, Bartlomiej Zolnierkiewicz).
- New DT bindings for Operating Performance Points (OPP), support for
them in the OPP framework and in the cpufreq-dt driver plus related
OPP framework fixes and cleanups (Viresh Kumar).
- cpufreq powernv driver updates (Shilpasri G Bhat).
- New cpufreq driver for Mediatek MT8173 (Pi-Cheng Chen).
- Assorted cpufreq driver (speedstep-lib, sfi, integrator) cleanups
and fixes (Abhilash Jindal, Andrzej Hajda, Cristian Ardelean).
- intel_pstate driver updates including Skylake-S support, support
for enabling HW P-states per CPU and an additional vendor bypass
list entry (Kristen Carlson Accardi, Chen Yu, Ethan Zhao).
- cpuidle core fixes related to the handling of coupled idle states
(Xunlei Pang).
- intel_idle driver updates including Skylake Client support and
support for freeze-mode-specific idle states (Len Brown).
- Driver core updates related to power management (Andy Shevchenko,
Rafael J Wysocki).
- Generic power domains framework fixes and cleanups (Jon Hunter,
Geert Uytterhoeven, Rajendra Nayak, Ulf Hansson).
- Device PM QoS framework update to allow the latency tolerance
setting to be exposed to user space via sysfs (Mika Westerberg).
- devfreq support for PPMUv2 in Exynos5433 and a fix for an incorrect
exynos-ppmu DT binding (Chanwoo Choi, Javier Martinez Canillas).
- System sleep support updates (Alan Stern, Len Brown, SungEun Kim).
- rockchip-io AVS support updates (Heiko Stuebner).
- PM core clocks support fixup (Colin Ian King).
- Power capping RAPL driver update including support for Skylake H/S
and Broadwell-H (Radivoje Jovanovic, Seiichi Ikarashi).
- Generic device properties framework fixes related to the handling
of static (driver-provided) property sets (Andy Shevchenko).
- turbostat and cpupower updates (Len Brown, Shilpasri G Bhat,
Shreyas B Prabhu)"
* tag 'pm+acpi-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (180 commits)
cpufreq: speedstep-lib: Use monotonic clock
cpufreq: powernv: Increase the verbosity of OCC console messages
cpufreq: sfi: use kmemdup rather than duplicating its implementation
cpufreq: drop !cpufreq_driver check from cpufreq_parse_governor()
cpufreq: rename cpufreq_real_policy as cpufreq_user_policy
cpufreq: remove redundant 'policy' field from user_policy
cpufreq: remove redundant 'governor' field from user_policy
cpufreq: update user_policy.* on success
cpufreq: use memcpy() to copy policy
cpufreq: remove redundant CPUFREQ_INCOMPATIBLE notifier event
cpufreq: mediatek: Add MT8173 cpufreq driver
dt-bindings: mediatek: Add MT8173 CPU DVFS clock bindings
PM / Domains: Fix typo in description of genpd_dev_pm_detach()
PM / Domains: Remove unusable governor dummies
PM / Domains: Make pm_genpd_init() available to modules
PM / domains: Align column headers and data in pm_genpd_summary output
powercap / RAPL: disable the 2nd power limit properly
tools: cpupower: Fix error when running cpupower monitor
PM / OPP: Drop unlikely before IS_ERR(_OR_NULL)
PM / OPP: Fix static checker warning (broken 64bit big endian systems)
...
Mediatek MT8173 is an ARMv8 based quad-core (2*Cortex-A53 and
2*Cortex-A72) SoC with duall clusters. For each cluster, two voltage
inputs, Vproc and Vsram are supplied by two regulators. For the big
cluster, two regulators come from different PMICs. In this case, when
scaling voltage inputs of the cluster, the voltages of two regulator
inputs need to be controlled by software explicitly under the SoC
specific limitation:
100mV < Vsram - Vproc < 200mV
which is called 'voltage tracking' mechanism. And when scaling the
frequency of cluster clock input, the input MUX need to be parented to
another "intermediate" stable PLL first and reparented to the original
PLL once the original PLL is stable at the target frequency. This patch
implements those mechanisms to enable CPU DVFS support for Mediatek
MT8173 SoC.
Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Commit 966f2a71a9 ("cpufreq: exynos: remove Exynos4x12 specific
cpufreq driver support") deleted option ARM_EXYNOS_CPUFREQ but missed
to delete a rule in drivers/cpufreq/Makefile which depends on that
option.
Remove unselectable rule for arm-exynos-cpufreq.o
from drivers/cpufreq/Makefile.
Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
Exynos4x12 based platforms have switched over to use generic
cpufreq driver for cpufreq functionality. So the Exynos
specific cpufreq support for these platforms can be removed.
Also once Exynos4x12 based platforms support have been removed
the shared exynos-cpufreq driver is no longer needed and can
be deleted.
Based on the earlier work by Thomas Abraham.
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Thomas Abraham <thomas.ab@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
Exynos5250 based platforms have switched over to use generic
cpufreq driver for cpufreq functionality. So the Exynos
specific cpufreq support for these platforms can be removed.
Cc: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>
Tested-by: Javier Martinez Canillas <javier@dowhile0.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
[k.kozlowski: Rebased the patch around exynos-cpufreq.c]
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
Add a new cpufreq driver for Tegra124. Instead of using the PLLX as
the CPU clocksource, switch immediately to the DFLL. It allows the use
of higher clock rates, and will automatically scale the CPU voltage as
well. Besides the CPU clocksource switch, we let the cpufreq-dt driver
for all the cpufreq operations.
This driver also relies on the DFLL driver to fill the OPP table for the
CPU0 device, so that the cpufreq-dt driver knows what frequencies to
use.
Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Signed-off-by: Mikko Perttunen <mikko.perttunen@kapsi.fi>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The Tegra124 will use a different driver for frequency scaling, so
rename the old driver (which handles only Tegra20) appropriately.
Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Signed-off-by: Mikko Perttunen <mikko.perttunen@kapsi.fi>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Exynos4210 based platforms have switched over to use generic
cpufreq driver for cpufreq functionality. So the Exynos
specific cpufreq support for these platforms can be removed.
Changes by Bartlomiej:
- dropped Exynos5250 support removal for now
- updated exynos-cpufreq.[c,h]
Cc: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Add acpu driver for hisilicon SoC, acpu is application processor
subsystem. Currently the acpu has the coupled clock domain for two
clusters, so this driver will directly use cpufreq-dt driver as
backend.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This driver works on all QorIQ platforms which include
ARM-based cores and PPC-based cores.
Rename it in order to represent better.
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Pull more thermal managament updates from Zhang Rui:
"Specifics:
- Exynos thermal driver refactoring. Several cleanups, code
optimization, unused symbols removal, and unused feature removal in
Exynos thermal driver. Thanks Lukasz for this effort.
- Exynos thermal driver support to OF thermal. After the code
refactoring, the driver earned the support to OF thermal. Chip
thermal data were moved from driver code to DTS, reducing the code
footprint. Thanks Lukasz for this.
- After receiving the OF thermal support, the exynos thermal driver
now must allow modular build. Thanks Arnd for detecting, reporting
and fixing this.
- Exynos thermal driver support to Exynos 7 SoC. Thanks Abhilash for
this.
- Accurate temperature reporting on Rockchip thermal driver, thanks
to Caesar.
- Fix on how OF thermal enables its zones, thanks Lukasz for fixing.
- Fixes in OF thermal examples under Documentation/. Thanks Srinivas
for fixing"
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
thermal: exynos: Add TMU support for Exynos7 SoC
dts: Documentation: Add documentation for Exynos7 SoC thermal bindings
cpufreq: exynos: allow modular build
thermal: Fix examples in DT documentation
thermal: exynos: Correct sanity check at exynos_report_trigger() function
thermal: Kconfig: Remove config for not used EXYNOS_THERMAL_CORE
thermal: exynos: Remove exynos_tmu_data.c file
thermal: rockchip: make temperature reporting much more accurate
thermal: exynos: Remove exynos_thermal_common.[c|h] files
thermal: samsung: core: Exynos TMU rework to use device tree for configuration
dts: Documentation: Update exynos-thermal.txt example for Exynos5440
dts: Documentation: Extending documentation entry for exynos-thermal
cpufreq: exynos: Use device tree to determine if cpufreq cooling should be registered
thermal: exynos: Modify exynos thermal code to use device tree for cpu cooling configuration
thermal: exynos: Provide thermal_exynos.h file to be included in device tree files
thermal: exynos: cosmetic: Correct comment format
thermal: of: Enable thermal_zoneX when sensor is correctly added
Pull SFI-based cpufreq driver for v3.20 from Len Brown.
* 'sfi' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
cpufreq: Add SFI based cpufreq driver support
SFI: fix compiler warnings
The exynos cpufreq driver code recently gained a dependency on the
cooling code, which may be a loadable module. This breaks an ARM
allmodconfig build:
drivers/built-in.o: In function `exynos_cpufreq_probe':
:(.text+0x1748e8): undefined reference to `of_cpufreq_cooling_register'
To avoid this problem, change cpufreq Kconfig to allow the drivers
to be loadable modules as well and enforce a dependency on the
thermal module.
This change, in order to allow module builds on this cpufreq
driver, properly constructs the driver into a single module,
instead of several modules. The change also keeps the proper
platform dependency, and therefore, it wont load in platforms
that are not supposed to be loaded. The user will be able to
build the support for all platforms, or select which platforms
(s)he wants (as originally), except that now it can be a module,
instead.
Besides, it will still keep the driver only on those configs
that expect it to be on. And it won't compile/load on platforms
that it is not supposed to. It brings the config ARM_EXYNOS_CPU_FREQ_BOOST_SW
closer to this driver, so it looks better in the menuconfig.
We intentionally change ARM_EXYNOS5440_CPUFREQ to be tristate too, to
avoid future troubles.
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-pm@vger.kernel.org
Cc: linux-samsung-soc@vger.kernel.org
Fixes: e725d26c48 ("cpufreq: exynos: Use device tree to determine if cpufreq cooling should be registered")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
This adds the SFI based cpu freq driver for some of the Intel's
Silvermont based Atom architectures like Z34xx and Z35xx.
Signed-off-by: Rudramuni, Vishwesh M <vishwesh.m.rudramuni@intel.com>
Signed-off-by: Srinidhi Kasagar <srinidhi.kasagar@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Add ability for PXA2xx CPUFreq to be compiled as a module or not at all.
Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This patch adds cpufreq driver for Loongson1B which
is capable of changing the CPU frequency dynamically.
Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The naming convention of this driver was always under the scanner, people
complained that it should have a more generic name than cpu0, as it manages all
CPUs that are sharing clock lines.
Also, in future it will be modified to support any number of clusters with
separate clock/voltage lines.
Lets rename it to 'cpufreq_dt' from 'cpufreq_cpu0'.
Tested-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Since commtit 8a7b1227e3 (cpufreq: davinci: move cpufreq driver to
drivers/cpufreq) this added dependancy only for CONFIG_ARCH_DAVINCI_DA850
where as davinci_cpufreq_init() call is used by all davinci platform.
This patch fixes following build error:
arch/arm/mach-davinci/built-in.o: In function `davinci_init_late':
:(.init.text+0x928): undefined reference to `davinci_cpufreq_init'
make: *** [vmlinux] Error 1
Fixes: 8a7b1227e3 (cpufreq: davinci: move cpufreq driver to drivers/cpufreq)
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
CPUFreq specific helper functions for OPP (Operating Performance Points)
now use generic OPP functions that allow CPUFreq to be be moved back
into CPUFreq framework. This allows for independent modifications
or future enhancements as needed isolated to just CPUFreq framework
alone.
Here, we just move relevant code and documentation to make this part of
CPUFreq infrastructure.
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Backend driver to dynamically set voltage and frequency on
IBM POWER non-virtualized platforms. Power management SPRs
are used to set the required PState.
This driver works in conjunction with cpufreq governors
like 'ondemand' to provide a demand based frequency and
voltage setting on IBM POWER non-virtualized platforms.
PState table is obtained from OPAL v3 firmware through device
tree.
powernv_cpufreq back-end driver would parse the relevant device-tree
nodes and initialise the cpufreq subsystem on powernv platform.
The code was originally written by svaidy@linux.vnet.ibm.com. Over
time it was modified to accomodate bug-fixes as well as updates to the
the cpu-freq core. Relevant portions of the change logs corresponding
to those modifications are noted below:
* The policy->cpus needs to be populated in a hotplug-invariant
manner instead of using cpu_sibling_mask() which varies with
cpu-hotplug. This is because the cpufreq core code copies this
content into policy->related_cpus mask which should not vary on
cpu-hotplug. [Authored by srivatsa.bhat@linux.vnet.ibm.com]
* Create a helper routine that can return the cpu-frequency for the
corresponding pstate_id. Also, cache the values of the pstate_max,
pstate_min and pstate_nominal and nr_pstates in a static structure
so that they can be reused in the future to perform any
validations. [Authored by ego@linux.vnet.ibm.com]
* Create a driver attribute named cpuinfo_nominal_freq which creates
a sysfs read-only file named cpuinfo_nominal_freq. Export the
frequency corresponding to the nominal_pstate through this
interface.
Nominal frequency is the highest non-turbo frequency for the
platform. This is generally used for setting governor policies
from user space for optimal energy efficiency. [Authored by
ego@linux.vnet.ibm.com]
* Implement a powernv_cpufreq_get(unsigned int cpu) method which will
return the current operating frequency. Export this via the sysfs
interface cpuinfo_cur_freq by setting powernv_cpufreq_driver.get to
powernv_cpufreq_get(). [Authored by ego@linux.vnet.ibm.com]
[Change log updated by ego@linux.vnet.ibm.com]
Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Signed-off-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The TC2(i.e. CA15_A7) Versatile Express has external Cortex M3 based
power controller which is responsible for CPU DVFS and SPC provides
the interface for the same.
This patch adds a tiny interface driver to check if OPPs are
initialised by SPC platform code and register the arm_big_little
cpufreq driver.
Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
CONFIG_CPU_FREQ_TABLE will be always enabled when cpufreq framework is used, as
cpufreq core depends on it. So, we don't need this CONFIG option anymore as it
is not configurable. Remove CONFIG_CPU_FREQ_TABLE and update its users.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The target frequency calculation method in the ondemand governor has
changed and it is now independent of the measured average frequency.
Consequently, the APERF/MPERF support in cpufreq is not used any
more, so drop it.
[rjw: Changelog]
Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
- Hotplug changes allowing device hot-removal operations to fail
gracefully (instead of crashing the kernel) if they cannot be
carried out completely. From Rafael J Wysocki and Toshi Kani.
- Freezer update from Colin Cross and Mandeep Singh Baines targeted
at making the freezing of tasks a bit less heavy weight operation.
- cpufreq resume fix from Srivatsa S Bhat for a regression introduced
during the 3.10 cycle causing some cpufreq sysfs attributes to
return wrong values to user space after resume.
- New freqdomain_cpus sysfs attribute for the acpi-cpufreq driver to
provide information previously available via related_cpus from
Lan Tianyu.
- cpufreq fixes and cleanups from Viresh Kumar, Jacob Shin,
Heiko Stübner, Xiaoguang Chen, Ezequiel Garcia, Arnd Bergmann, and
Tang Yuantian.
- Fix for an ACPICA regression causing suspend/resume issues to
appear on some systems introduced during the 3.4 development cycle
from Lv Zheng.
- ACPICA fixes and cleanups from Bob Moore, Tomasz Nowicki, Lv Zheng,
Chao Guan, and Zhang Rui.
- New cupidle driver for Xilinx Zynq processors from Michal Simek.
- cpuidle fixes and cleanups from Daniel Lezcano.
- Changes to make suspend/resume work correctly in Xen guests from
Konrad Rzeszutek Wilk.
- ACPI device power management fixes and cleanups from Fengguang Wu
and Rafael J Wysocki.
- ACPI documentation updates from Lv Zheng, Aaron Lu and Hanjun Guo.
- Fix for the IA-64 issue that was the reason for reverting commit
9f29ab1 and updates of the ACPI scan code from Rafael J Wysocki.
- Mechanism for adding CMOS RTC address space handlers from Lan Tianyu
(to allow some EC-related breakage to be fixed on some systems).
- Spec-compliant implementation of acpi_os_get_timer() from
Mika Westerberg.
- Modification of do_acpi_find_child() to execute _STA in order to
to avoid situations in which a pointer to a disabled device object
is returned instead of an enabled one with the same _ADR value.
From Jeff Wu.
- Intel BayTrail PCH (Platform Controller Hub) support for the ACPI
Intel Low-Power Subsystems (LPSS) driver and modificaions of that
driver to work around a couple of known BIOS issues from
Mika Westerberg and Heikki Krogerus.
- EC driver fix from Vasiliy Kulikov to make it use get_user() and
put_user() instead of dereferencing user space pointers blindly.
- Assorted ACPI code cleanups from Bjorn Helgaas, Nicholas Mazzuca and
Toshi Kani.
- Modification of the "runtime idle" helper routine to take the return
values of the callbacks executed by it into account and to call
rpm_suspend() if they return 0, which allows some code bloat
reduction to be done, from Rafael J Wysocki and Alan Stern.
- New trace points for PM QoS from Sahara <keun-o.park@windriver.com>.
- PM QoS documentation update from Lan Tianyu.
- Assorted core PM code cleanups and changes from Bernie Thompson,
Bjorn Helgaas, Julius Werner, and Shuah Khan.
- New devfreq driver for the Exynos5-bus device from Abhilash Kesavan.
- Minor devfreq cleanups, fixes and MAINTAINERS update from
MyungJoo Ham, Abhilash Kesavan, Paul Bolle, Rajagopal Venkat, and
Wei Yongjun.
- OMAP Adaptive Voltage Scaling (AVS) SmartReflex voltage control
driver updates from Andrii Tseglytskyi and Nishanth Menon.
/
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Merge tag 'pm+acpi-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI updates from Rafael Wysocki:
"This time the total number of ACPI commits is slightly greater than
the number of cpufreq commits, but Viresh Kumar (who works on cpufreq)
remains the most active patch submitter.
To me, the most significant change is the addition of offline/online
device operations to the driver core (with the Greg's blessing) and
the related modifications of the ACPI core hotplug code. Next are the
freezer updates from Colin Cross that should make the freezing of
tasks a bit less heavy weight.
We also have a couple of regression fixes, a number of fixes for
issues that have not been identified as regressions, two new drivers
and a bunch of cleanups all over.
Highlights:
- Hotplug changes to support graceful hot-removal failures.
It sometimes is necessary to fail device hot-removal operations
gracefully if they cannot be carried out completely. For example,
if memory from a memory module being hot-removed has been allocated
for the kernel's own use and cannot be moved elsewhere, it's
desirable to fail the hot-removal operation in a graceful way
rather than to crash the kernel, but currenty a success or a kernel
crash are the only possible outcomes of an attempted memory
hot-removal. Needless to say, that is not a very attractive
alternative and it had to be addressed.
However, in order to make it work for memory, I first had to make
it work for CPUs and for this purpose I needed to modify the ACPI
processor driver. It's been split into two parts, a resident one
handling the low-level initialization/cleanup and a modular one
playing the actual driver's role (but it binds to the CPU system
device objects rather than to the ACPI device objects representing
processors). That's been sort of like a live brain surgery on a
patient who's riding a bike.
So this is a little scary, but since we found and fixed a couple of
regressions it caused to happen during the early linux-next testing
(a month ago), nobody has complained.
As a bonus we remove some duplicated ACPI hotplug code, because the
ACPI-based CPU hotplug is now going to use the common ACPI hotplug
code.
- Lighter weight freezing of tasks.
These changes from Colin Cross and Mandeep Singh Baines are
targeted at making the freezing of tasks a bit less heavy weight
operation. They reduce the number of tasks woken up every time
during the freezing, by using the observation that the freezer
simply doesn't need to wake up some of them and wait for them all
to call refrigerator(). The time needed for the freezer to decide
to report a failure is reduced too.
Also reintroduced is the check causing a lockdep warining to
trigger when try_to_freeze() is called with locks held (which is
generally unsafe and shouldn't happen).
- cpufreq updates
First off, a commit from Srivatsa S Bhat fixes a resume regression
introduced during the 3.10 cycle causing some cpufreq sysfs
attributes to return wrong values to user space after resume. The
fix is kind of fresh, but also it's pretty obvious once Srivatsa
has identified the root cause.
Second, we have a new freqdomain_cpus sysfs attribute for the
acpi-cpufreq driver to provide information previously available via
related_cpus. From Lan Tianyu.
Finally, we fix a number of issues, mostly related to the
CPUFREQ_POSTCHANGE notifier and cpufreq Kconfig options and clean
up some code. The majority of changes from Viresh Kumar with bits
from Jacob Shin, Heiko Stübner, Xiaoguang Chen, Ezequiel Garcia,
Arnd Bergmann, and Tang Yuantian.
- ACPICA update
A usual bunch of updates from the ACPICA upstream.
During the 3.4 cycle we introduced support for ACPI 5 extended
sleep registers, but they are only supposed to be used if the
HW-reduced mode bit is set in the FADT flags and the code attempted
to use them without checking that bit. That caused suspend/resume
regressions to happen on some systems. Fix from Lv Zheng causes
those registers to be used only if the HW-reduced mode bit is set.
Apart from this some other ACPICA bugs are fixed and code cleanups
are made by Bob Moore, Tomasz Nowicki, Lv Zheng, Chao Guan, and
Zhang Rui.
- cpuidle updates
New driver for Xilinx Zynq processors is added by Michal Simek.
Multidriver support simplification, addition of some missing
kerneldoc comments and Kconfig-related fixes come from Daniel
Lezcano.
- ACPI power management updates
Changes to make suspend/resume work correctly in Xen guests from
Konrad Rzeszutek Wilk, sparse warning fix from Fengguang Wu and
cleanups and fixes of the ACPI device power state selection
routine.
- ACPI documentation updates
Some previously missing pieces of ACPI documentation are added by
Lv Zheng and Aaron Lu (hopefully, that will help people to
uderstand how the ACPI subsystem works) and one outdated doc is
updated by Hanjun Guo.
- Assorted ACPI updates
We finally nailed down the IA-64 issue that was the reason for
reverting commit 9f29ab11dd ("ACPI / scan: do not match drivers
against objects having scan handlers"), so we can fix it and move
the ACPI scan handler check added to the ACPI video driver back to
the core.
A mechanism for adding CMOS RTC address space handlers is
introduced by Lan Tianyu to allow some EC-related breakage to be
fixed on some systems.
A spec-compliant implementation of acpi_os_get_timer() is added by
Mika Westerberg.
The evaluation of _STA is added to do_acpi_find_child() to avoid
situations in which a pointer to a disabled device object is
returned instead of an enabled one with the same _ADR value. From
Jeff Wu.
Intel BayTrail PCH (Platform Controller Hub) support is added to
the ACPI driver for Intel Low-Power Subsystems (LPSS) and that
driver is modified to work around a couple of known BIOS issues.
Changes from Mika Westerberg and Heikki Krogerus.
The EC driver is fixed by Vasiliy Kulikov to use get_user() and
put_user() instead of dereferencing user space pointers blindly.
Code cleanups are made by Bjorn Helgaas, Nicholas Mazzuca and Toshi
Kani.
- Assorted power management updates
The "runtime idle" helper routine is changed to take the return
values of the callbacks executed by it into account and to call
rpm_suspend() if they return 0, which allows us to reduce the
overall code bloat a bit (by dropping some code that's not
necessary any more after that modification).
The runtime PM documentation is updated by Alan Stern (to reflect
the "runtime idle" behavior change).
New trace points for PM QoS are added by Sahara
(<keun-o.park@windriver.com>).
PM QoS documentation is updated by Lan Tianyu.
Code cleanups are made and minor issues are addressed by Bernie
Thompson, Bjorn Helgaas, Julius Werner, and Shuah Khan.
- devfreq updates
New driver for the Exynos5-bus device from Abhilash Kesavan.
Minor cleanups, fixes and MAINTAINERS update from MyungJoo Ham,
Abhilash Kesavan, Paul Bolle, Rajagopal Venkat, and Wei Yongjun.
- OMAP power management updates
Adaptive Voltage Scaling (AVS) SmartReflex voltage control driver
updates from Andrii Tseglytskyi and Nishanth Menon."
* tag 'pm+acpi-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (162 commits)
cpufreq: Fix cpufreq regression after suspend/resume
ACPI / PM: Fix possible NULL pointer deref in acpi_pm_device_sleep_state()
PM / Sleep: Warn about system time after resume with pm_trace
cpufreq: don't leave stale policy pointer in cdbs->cur_policy
acpi-cpufreq: Add new sysfs attribute freqdomain_cpus
cpufreq: make sure frequency transitions are serialized
ACPI: implement acpi_os_get_timer() according the spec
ACPI / EC: Add HP Folio 13 to ec_dmi_table in order to skip DSDT scan
ACPI: Add CMOS RTC Operation Region handler support
ACPI / processor: Drop unused variable from processor_perflib.c
cpufreq: tegra: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: s3c64xx: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: omap: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: imx6q: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: exynos: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: dbx500: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: davinci: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: arm-big-little: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: powernow-k8: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: pcc: call CPUFREQ_POSTCHANGE notfier in error cases
...
currently Tegra cpufreq driver gets built based on ARCH_TEGRA, which doesn't
depend on nor select CPU_FREQ itself, so:
select CPU_FREQ_TABLE if CPU_FREQ
... isn't guaranteed to fire.
The correct solution seems to be:
* Add CONFIG_ARM_TEGRA_CPUFREQ to drivers/cpufreq/Kconfig.arm.
* Make that Kconfig option selct CPU_FREQ_TABLE.
* Make that Kconfig option be def_bool ARCH_TEGRA.
* Modify drivers/cpufreq/Makefile to build tegra-cpufreq.c based on that.
* Remove all the cpufreq-related stuff from arch/arm/mach-tegra/Kconfig.
That way, tegra-cpufreq.c can't be built if !CPU_FREQ, and Tegra's
cpufreq works the same way as all the other cpufreq drivers.
This patch does it.
Suggested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
By mistake blackfin's cpufreq driver is enabled when CONFIG_BLACKFIN was
present, whereas it should have been enabled only when CONFIG_BFIN_CPU_FREQ is
present.
Fix it.
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Move cpufreq driver of powerpc platform to drivers/cpufreq.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Add cpufreq driver for Freescale e500mc, e5500 and e6500 SoCs
which are capable of changing the CPU frequency dynamically
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This patch moves cpufreq driver of Samsung's ARM based
s3c24xx platform to drivers/cpufreq.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This patch adds dvfs support for exynos5440 SOC. This soc has 4 cores and
they scale at same frequency. The nature of exynos5440 clock controller is
different from previous exynos controllers so not using the common exynos
cpufreq framework. The major difference being interrupt notification for
frequency change. Also, OPP library is used for device tree parsing to get
different parameters like frequency, voltage etc. Since the opp library sorts
the frequency table in ascending order so they are again re-arranged in
descending order. This will have one-to-one mapping with the clock controller
state management logic.
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Future AMD processors, starting with Family 16h, can provide software
with feedback on how the workload may respond to frequency change --
memory-bound workloads will not benefit from higher frequency, where
as compute-bound workloads will. This patch enables this "frequency
sensitivity feedback" to aid the ondemand governor to make better
frequency change decisions by hooking into the powersave bias.
Signed-off-by: Jacob Shin <jacob.shin@amd.com>
Acked-by: Thomas Renninger <trenn@suse.de>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This patch moves cpufreq driver of powerpc platforms/cell to drivers/cpufreq.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This patch moves cpufreq driver of SPARC architecture to drivers/cpufreq.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This patch moves cpufreq driver of UNICORE-2 architecture to drivers/cpufreq.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This patch moves cpufreq driver of SUPERH architecture to drivers/cpufreq.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This patch moves cpufreq driver of MIPS architecture to drivers/cpufreq.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Srinivasarao P
Connor O'Brien
Blagovest Kolenichev
Steve Muckle
Stephen Boyd
Saravana Kannan
Mike Chan
Linus Torvalds
Rafael J. Wysocki
Ashwin Chaugule
Sudeep Holla
Viresh Kumar
Pi-Cheng Chen
Jonas Rabenstein
Bartlomiej Zolnierkiewicz
Tuomas Tynkkynen
Thomas Abraham
Leo Yan
Tang Yuantian
Arnd Bergmann
Srinidhi Kasagar
Petr Cvek
Kelvin Cheung
Prabhakar Lad
Nishanth Menon
Vaidyanathan Srinivasan
Sudeep KarkadaNagesha
Stratos Karafotis
Amit Daniel Kachhap
Jacob Shin