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Merge 3.10.107 into android-msm-bullhead-3.10-oreo-m5
Changes in 3.10.107: (270 commits)
Revert "Btrfs: don't delay inode ref updates during log, replay"
Btrfs: fix memory leak in reading btree blocks
ext4: use more strict checks for inodes_per_block on mount
ext4: fix in-superblock mount options processing
ext4: add sanity checking to count_overhead()
ext4: validate s_first_meta_bg at mount time
jbd2: don't leak modified metadata buffers on an aborted journal
ext4: fix fencepost in s_first_meta_bg validation
ext4: trim allocation requests to group size
ext4: preserve the needs_recovery flag when the journal is aborted
ext4: return EROFS if device is r/o and journal replay is needed
ext4: fix inode checksum calculation problem if i_extra_size is small
block: fix use-after-free in sys_ioprio_get()
block: allow WRITE_SAME commands with the SG_IO ioctl
block: fix del_gendisk() vs blkdev_ioctl crash
dm crypt: mark key as invalid until properly loaded
dm space map metadata: fix 'struct sm_metadata' leak on failed create
md/raid5: limit request size according to implementation limits
md:raid1: fix a dead loop when read from a WriteMostly disk
md linear: fix a race between linear_add() and linear_congested()
CIFS: Fix a possible memory corruption during reconnect
CIFS: Fix missing nls unload in smb2_reconnect()
CIFS: Fix a possible memory corruption in push locks
CIFS: remove bad_network_name flag
fs/cifs: make share unaccessible at root level mountable
cifs: Do not send echoes before Negotiate is complete
ocfs2: fix crash caused by stale lvb with fsdlm plugin
ocfs2: fix BUG_ON() in ocfs2_ci_checkpointed()
can: raw: raw_setsockopt: limit number of can_filter that can be set
can: peak: fix bad memory access and free sequence
can: c_can_pci: fix null-pointer-deref in c_can_start() - set device pointer
can: ti_hecc: add missing prepare and unprepare of the clock
can: bcm: fix hrtimer/tasklet termination in bcm op removal
can: usb_8dev: Fix memory leak of priv->cmd_msg_buffer
ALSA: hda - Fix up GPIO for ASUS ROG Ranger
ALSA: seq: Fix race at creating a queue
ALSA: seq: Don't handle loop timeout at snd_seq_pool_done()
ALSA: timer: Reject user params with too small ticks
ALSA: seq: Fix link corruption by event error handling
ALSA: seq: Fix racy cell insertions during snd_seq_pool_done()
ALSA: seq: Fix race during FIFO resize
ALSA: seq: Don't break snd_use_lock_sync() loop by timeout
ALSA: usb-audio: Add QuickCam Communicate Deluxe/S7500 to volume_control_quirks
usb: gadgetfs: restrict upper bound on device configuration size
USB: gadgetfs: fix unbounded memory allocation bug
USB: gadgetfs: fix use-after-free bug
USB: gadgetfs: fix checks of wTotalLength in config descriptors
xhci: free xhci virtual devices with leaf nodes first
USB: serial: io_ti: bind to interface after fw download
usb: gadget: composite: always set ep->mult to a sensible value
USB: cdc-acm: fix double usb_autopm_put_interface() in acm_port_activate()
USB: cdc-acm: fix open and suspend race
USB: cdc-acm: fix failed open not being detected
usb: dwc3: gadget: make Set Endpoint Configuration macros safe
usb: host: xhci-plat: Fix timeout on removal of hot pluggable xhci controllers
usb: dwc3: gadget: delay unmap of bounced requests
usb: hub: Wait for connection to be reestablished after port reset
usb: gadget: composite: correctly initialize ep->maxpacket
USB: UHCI: report non-PME wakeup signalling for Intel hardware
arm/xen: Use alloc_percpu rather than __alloc_percpu
xfs: set AGI buffer type in xlog_recover_clear_agi_bucket
xfs: clear _XBF_PAGES from buffers when readahead page
ssb: Fix error routine when fallback SPROM fails
drivers/gpu/drm/ast: Fix infinite loop if read fails
scsi: avoid a permanent stop of the scsi device's request queue
scsi: move the nr_phys_segments assert into scsi_init_io
scsi: don't BUG_ON() empty DMA transfers
scsi: storvsc: properly handle SRB_ERROR when sense message is present
scsi: storvsc: properly set residual data length on errors
target/pscsi: Fix TYPE_TAPE + TYPE_MEDIMUM_CHANGER export
scsi: lpfc: Add shutdown method for kexec
scsi: sr: Sanity check returned mode data
scsi: sd: Fix capacity calculation with 32-bit sector_t
s390/vmlogrdr: fix IUCV buffer allocation
libceph: verify authorize reply on connect
nfs_write_end(): fix handling of short copies
powerpc/ps3: Fix system hang with GCC 5 builds
sg_write()/bsg_write() is not fit to be called under KERNEL_DS
ftrace/x86: Set ftrace_stub to weak to prevent gcc from using short jumps to it
cred/userns: define current_user_ns() as a function
net: ti: cpmac: Fix compiler warning due to type confusion
tick/broadcast: Prevent NULL pointer dereference
netvsc: reduce maximum GSO size
drop_monitor: add missing call to genlmsg_end
drop_monitor: consider inserted data in genlmsg_end
igmp: Make igmp group member RFC 3376 compliant
HID: hid-cypress: validate length of report
Input: xpad - use correct product id for x360w controllers
Input: i8042 - add noloop quirk for Dell Embedded Box PC 3000
Input: iforce - validate number of endpoints before using them
Input: kbtab - validate number of endpoints before using them
Input: joydev - do not report stale values on first open
Input: tca8418 - use the interrupt trigger from the device tree
Input: mpr121 - handle multiple bits change of status register
Input: mpr121 - set missing event capability
Input: i8042 - add Clevo P650RS to the i8042 reset list
i2c: fix kernel memory disclosure in dev interface
vme: Fix wrong pointer utilization in ca91cx42_slave_get
sysrq: attach sysrq handler correctly for 32-bit kernel
pinctrl: sh-pfc: Do not unconditionally support PIN_CONFIG_BIAS_DISABLE
x86/PCI: Ignore _CRS on Supermicro X8DTH-i/6/iF/6F
qla2xxx: Fix crash due to null pointer access
ARM: 8634/1: hw_breakpoint: blacklist Scorpion CPUs
ARM: dts: da850-evm: fix read access to SPI flash
NFSv4: Ensure nfs_atomic_open set the dentry verifier on ENOENT
vmxnet3: Wake queue from reset work
Fix memory leaks in cifs_do_mount()
Compare prepaths when comparing superblocks
Move check for prefix path to within cifs_get_root()
Fix regression which breaks DFS mounting
apparmor: fix uninitialized lsm_audit member
apparmor: exec should not be returning ENOENT when it denies
apparmor: fix disconnected bind mnts reconnection
apparmor: internal paths should be treated as disconnected
apparmor: check that xindex is in trans_table bounds
apparmor: add missing id bounds check on dfa verification
apparmor: don't check for vmalloc_addr if kvzalloc() failed
apparmor: fix oops in profile_unpack() when policy_db is not present
apparmor: fix module parameters can be changed after policy is locked
apparmor: do not expose kernel stack
vfio/pci: Fix integer overflows, bitmask check
bna: Add synchronization for tx ring.
sg: Fix double-free when drives detach during SG_IO
move the call of __d_drop(anon) into __d_materialise_unique(dentry, anon)
serial: 8250_pci: Detach low-level driver during PCI error recovery
bnx2x: Correct ringparam estimate when DOWN
tile/ptrace: Preserve previous registers for short regset write
sysctl: fix proc_doulongvec_ms_jiffies_minmax()
ISDN: eicon: silence misleading array-bounds warning
ARC: [arcompact] handle unaligned access delay slot corner case
parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header
nfs: Don't increment lock sequence ID after NFS4ERR_MOVED
ipv6: addrconf: Avoid addrconf_disable_change() using RCU read-side lock
af_unix: move unix_mknod() out of bindlock
drm/nouveau/nv1a,nv1f/disp: fix memory clock rate retrieval
crypto: api - Clear CRYPTO_ALG_DEAD bit before registering an alg
ata: sata_mv:- Handle return value of devm_ioremap.
mm/memory_hotplug.c: check start_pfn in test_pages_in_a_zone()
mm, fs: check for fatal signals in do_generic_file_read()
ARC: [arcompact] brown paper bag bug in unaligned access delay slot fixup
sched/debug: Don't dump sched debug info in SysRq-W
tcp: fix 0 divide in __tcp_select_window()
macvtap: read vnet_hdr_size once
packet: round up linear to header len
vfs: fix uninitialized flags in splice_to_pipe()
siano: make it work again with CONFIG_VMAP_STACK
futex: Move futex_init() to core_initcall
rtc: interface: ignore expired timers when enqueuing new timers
irda: Fix lockdep annotations in hashbin_delete().
tty: serial: msm: Fix module autoload
rtlwifi: rtl_usb: Fix for URB leaking when doing ifconfig up/down
af_packet: remove a stray tab in packet_set_ring()
MIPS: Fix special case in 64 bit IP checksumming.
mm: vmpressure: fix sending wrong events on underflow
ipc/shm: Fix shmat mmap nil-page protection
sd: get disk reference in sd_check_events()
samples/seccomp: fix 64-bit comparison macros
ath5k: drop bogus warning on drv_set_key with unsupported cipher
rdma_cm: fail iwarp accepts w/o connection params
NFSv4: fix getacl ERANGE for some ACL buffer sizes
bcma: use (get|put)_device when probing/removing device driver
powerpc/xmon: Fix data-breakpoint
KVM: VMX: use correct vmcs_read/write for guest segment selector/base
KVM: PPC: Book3S PR: Fix illegal opcode emulation
KVM: s390: fix task size check
s390: TASK_SIZE for kernel threads
xtensa: move parse_tag_fdt out of #ifdef CONFIG_BLK_DEV_INITRD
mac80211: flush delayed work when entering suspend
drm/ast: Fix test for VGA enabled
drm/ttm: Make sure BOs being swapped out are cacheable
fat: fix using uninitialized fields of fat_inode/fsinfo_inode
drivers: hv: Turn off write permission on the hypercall page
xhci: fix 10 second timeout on removal of PCI hotpluggable xhci controllers
crypto: improve gcc optimization flags for serpent and wp512
mtd: pmcmsp: use kstrndup instead of kmalloc+strncpy
cpmac: remove hopeless #warning
mvsas: fix misleading indentation
l2tp: avoid use-after-free caused by l2tp_ip_backlog_recv
net: don't call strlen() on the user buffer in packet_bind_spkt()
dccp: Unlock sock before calling sk_free()
tcp: fix various issues for sockets morphing to listen state
uapi: fix linux/packet_diag.h userspace compilation error
ipv6: avoid write to a possibly cloned skb
dccp: fix memory leak during tear-down of unsuccessful connection request
futex: Fix potential use-after-free in FUTEX_REQUEUE_PI
futex: Add missing error handling to FUTEX_REQUEUE_PI
give up on gcc ilog2() constant optimizations
cancel the setfilesize transation when io error happen
crypto: ghash-clmulni - Fix load failure
crypto: cryptd - Assign statesize properly
ACPI / video: skip evaluating _DOD when it does not exist
Drivers: hv: balloon: don't crash when memory is added in non-sorted order
s390/pci: fix use after free in dma_init
cpufreq: Fix and clean up show_cpuinfo_cur_freq()
igb: Workaround for igb i210 firmware issue
igb: add i211 to i210 PHY workaround
ipv4: provide stronger user input validation in nl_fib_input()
tcp: initialize icsk_ack.lrcvtime at session start time
ACM gadget: fix endianness in notifications
mmc: sdhci: Do not disable interrupts while waiting for clock
uvcvideo: uvc_scan_fallback() for webcams with broken chain
fbcon: Fix vc attr at deinit
crypto: algif_hash - avoid zero-sized array
virtio_balloon: init 1st buffer in stats vq
c6x/ptrace: Remove useless PTRACE_SETREGSET implementation
sparc/ptrace: Preserve previous registers for short regset write
metag/ptrace: Preserve previous registers for short regset write
metag/ptrace: Provide default TXSTATUS for short NT_PRSTATUS
metag/ptrace: Reject partial NT_METAG_RPIPE writes
libceph: force GFP_NOIO for socket allocations
ACPI: Fix incompatibility with mcount-based function graph tracing
ACPI / power: Avoid maybe-uninitialized warning
rtc: s35390a: make sure all members in the output are set
rtc: s35390a: implement reset routine as suggested by the reference
rtc: s35390a: improve irq handling
padata: avoid race in reordering
HID: hid-lg: Fix immediate disconnection of Logitech Rumblepad 2
HID: i2c-hid: Add sleep between POWER ON and RESET
drm/vmwgfx: NULL pointer dereference in vmw_surface_define_ioctl()
drm/vmwgfx: avoid calling vzalloc with a 0 size in vmw_get_cap_3d_ioctl()
drm/vmwgfx: Remove getparam error message
drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl()
Reset TreeId to zero on SMB2 TREE_CONNECT
metag/usercopy: Drop unused macros
metag/usercopy: Zero rest of buffer from copy_from_user
powerpc: Don't try to fix up misaligned load-with-reservation instructions
mm/mempolicy.c: fix error handling in set_mempolicy and mbind.
mtd: bcm47xxpart: fix parsing first block after aligned TRX
net/packet: fix overflow in check for priv area size
x86/vdso: Plug race between mapping and ELF header setup
iscsi-target: Fix TMR reference leak during session shutdown
iscsi-target: Drop work-around for legacy GlobalSAN initiator
xen, fbfront: fix connecting to backend
char: lack of bool string made CONFIG_DEVPORT always on
platform/x86: acer-wmi: setup accelerometer when machine has appropriate notify event
platform/x86: acer-wmi: setup accelerometer when ACPI device was found
mm: Tighten x86 /dev/mem with zeroing reads
virtio-console: avoid DMA from stack
catc: Combine failure cleanup code in catc_probe()
catc: Use heap buffer for memory size test
net: ipv6: check route protocol when deleting routes
Drivers: hv: don't leak memory in vmbus_establish_gpadl()
Drivers: hv: get rid of timeout in vmbus_open()
ubi/upd: Always flush after prepared for an update
x86/mce/AMD: Give a name to MCA bank 3 when accessed with legacy MSRs
powerpc: Reject binutils 2.24 when building little endian
net/packet: fix overflow in check for tp_frame_nr
net/packet: fix overflow in check for tp_reserve
tty: nozomi: avoid a harmless gcc warning
hostap: avoid uninitialized variable use in hfa384x_get_rid
gfs2: avoid uninitialized variable warning
net: neigh: guard against NULL solicit() method
sctp: listen on the sock only when it's state is listening or closed
ip6mr: fix notification device destruction
MIPS: Fix crash registers on non-crashing CPUs
RDS: Fix the atomicity for congestion map update
xen/x86: don't lose event interrupts
p9_client_readdir() fix
nfsd: check for oversized NFSv2/v3 arguments
ftrace/x86: Fix triple fault with graph tracing and suspend-to-ram
kvm: nVMX: Allow L1 to intercept software exceptions (#BP and #OF)
tun: read vnet_hdr_sz once
printk: use rcuidle console tracepoint
ipv6: check raw payload size correctly in ioctl
x86: standardize mmap_rnd() usage
x86/mm/32: Enable full randomization on i386 and X86_32
mm: larger stack guard gap, between vmas
mm: fix new crash in unmapped_area_topdown()
Allow stack to grow up to address space limit
Linux 3.10.107
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
arch/x86/mm/mmap.c
drivers/mmc/host/sdhci.c
drivers/usb/host/xhci-plat.c
fs/ext4/super.c
kernel/sched/core.c
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Merge 3.10.103 into android-msm-bullhead-3.10-oreo-m5
Changes in 3.10.103: (178 commits)
X.509: remove possible code fragility: enumeration values not handled
x86, asmlinkage, apm: Make APM data structure used from assembler visible
netfilter: x_tables: validate e->target_offset early
netfilter: x_tables: make sure e->next_offset covers remaining blob size
netfilter: x_tables: fix unconditional helper
netfilter: x_tables: don't move to non-existent next rule
netfilter: x_tables: add and use xt_check_entry_offsets
netfilter: x_tables: kill check_entry helper
netfilter: x_tables: assert minimum target size
netfilter: x_tables: add compat version of xt_check_entry_offsets
netfilter: x_tables: check standard target size too
netfilter: x_tables: check for bogus target offset
netfilter: x_tables: validate all offsets and sizes in a rule
netfilter: x_tables: don't reject valid target size on some architectures
netfilter: arp_tables: simplify translate_compat_table args
netfilter: ip_tables: simplify translate_compat_table args
netfilter: ip6_tables: simplify translate_compat_table args
netfilter: x_tables: xt_compat_match_from_user doesn't need a retval
netfilter: ensure number of counters is >0 in do_replace()
netfilter: x_tables: do compat validation via translate_table
Revert "netfilter: ensure number of counters is >0 in do_replace()"
netfilter: x_tables: introduce and use xt_copy_counters_from_user
perf/x86: Honor the architectural performance monitoring version
perf/x86: Fix undefined shift on 32-bit kernels
signal: remove warning about using SI_TKILL in rt_[tg]sigqueueinfo
PCI/ACPI: Fix _OSC ordering to allow PCIe hotplug use when available
udp: properly support MSG_PEEK with truncated buffers
USB: fix invalid memory access in hub_activate()
USB: usbfs: fix potential infoleak in devio
USB: fix up faulty backports
USB: EHCI: declare hostpc register as zero-length array
USB: serial: option: add support for Telit LE910 PID 0x1206
usb: musb: Stop bulk endpoint while queue is rotated
usb: musb: Ensure rx reinit occurs for shared_fifo endpoints
usb: renesas_usbhs: protect the CFIFOSEL setting in usbhsg_ep_enable()
x86/mm: Add barriers and document switch_mm()-vs-flush synchronization
pipe: limit the per-user amount of pages allocated in pipes
cdc_ncm: do not call usbnet_link_change from cdc_ncm_bind
KEYS: potential uninitialized variable
mm: migrate dirty page without clear_page_dirty_for_io etc
printk: do cond_resched() between lines while outputting to consoles
HID: hiddev: validate num_values for HIDIOCGUSAGES, HIDIOCSUSAGES commands
libceph: apply new_state before new_up_client on incrementals
tmpfs: don't undo fallocate past its last page
tmpfs: fix regression hang in fallocate undo
tcp: make challenge acks less predictable
tcp: record TLP and ER timer stats in v6 stats
tcp: consider recv buf for the initial window scale
MIPS: KVM: Fix mapped fault broken commpage handling
MIPS: KVM: Add missing gfn range check
MIPS: KVM: Fix gfn range check in kseg0 tlb faults
MIPS: KVM: Propagate kseg0/mapped tlb fault errors
MIPS: math-emu: Fix jalr emulation when rd == $0
MIPS: Fix siginfo.h to use strict posix types
MIPS: ath79: make bootconsole wait for both THRE and TEMT
MIPS: Fix 64k page support for 32 bit kernels.
MIPS: KVM: Fix modular KVM under QEMU
Input: uinput - handle compat ioctl for UI_SET_PHYS
Input: wacom_w8001 - w8001_MAX_LENGTH should be 13
Input: xpad - validate USB endpoint count during probe
ath5k: Change led pin configuration for compaq c700 laptop
aacraid: Relinquish CPU during timeout wait
aacraid: Fix for aac_command_thread hang
PCI: Disable all BAR sizing for devices with non-compliant BARs
rtlwifi: Fix logic error in enter/exit power-save mode
powerpc/book3s64: Fix branching to OOL handlers in relocatable kernel
powerpc: Fix definition of SIAR and SDAR registers
powerpc: Use privileged SPR number for MMCR2
powerpc/pseries/eeh: Handle RTAS delay requests in configure_bridge
powerpc/iommu: Remove the dependency on EEH struct in DDW mechanism
powerpc/pseries: Fix PCI config address for DDW
powerpc/tm: Always reclaim in start_thread() for exec() class syscalls
sunrpc: fix stripping of padded MIC tokens
drm/gma500: Fix possible out of bounds read
drm/fb_helper: Fix references to dev->mode_config.num_connector
drm/radeon: fix asic initialization for virtualized environments
drm/radeon: add a delay after ATPX dGPU power off
drm/radeon: Poll for both connect/disconnect on analog connectors
drm/radeon: fix firmware info version checks
ext4: fix hang when processing corrupted orphaned inode list
ext4: address UBSAN warning in mb_find_order_for_block()
ext4: silence UBSAN in ext4_mb_init()
ext4: verify extent header depth
ext4: check for extents that wrap around
ext4: don't call ext4_should_journal_data() on the journal inode
ext4: short-cut orphan cleanup on error
ext4: fix reference counting bug on block allocation error
dma-debug: avoid spinlock recursion when disabling dma-debug
xfs: xfs_iflush_cluster fails to abort on error
xfs: fix inode validity check in xfs_iflush_cluster
xfs: skip stale inodes in xfs_iflush_cluster
KVM: x86: fix OOPS after invalid KVM_SET_DEBUGREGS
ARM: fix PTRACE_SETVFPREGS on SMP systems
arm: oabi compat: add missing access checks
parisc: Fix pagefault crash in unaligned __get_user() call
ecryptfs: forbid opening files without mmap handler
fix d_walk()/non-delayed __d_free() race
crypto: ux500 - memmove the right size
crypto: gcm - Filter out async ghash if necessary
crypto: scatterwalk - Fix test in scatterwalk_done
sit: correct IP protocol used in ipip6_err
ipmr/ip6mr: Initialize the last assert time of mfc entries.
net: alx: Work around the DMA RX overflow issue
mac80211: mesh: flush mesh paths unconditionally
mac80211_hwsim: Add missing check for HWSIM_ATTR_SIGNAL
IB/mlx4: Properly initialize GRH TClass and FlowLabel in AHs
IB/security: Restrict use of the write() interface
IB/IPoIB: Don't update neigh validity for unresolved entries
IB/mlx4: Fix the SQ size of an RC QP
x86, build: copy ldlinux.c32 to image.iso
kprobes/x86: Clear TF bit in fault on single-stepping
x86/amd_nb: Fix boot crash on non-AMD systems
NFS: Fix another OPEN_DOWNGRADE bug
mm: Export migrate_page_move_mapping and migrate_page_copy
UBIFS: Implement ->migratepage()
cdc_ncm: workaround for EM7455 "silent" data interface
kvm: Fix irq route entries exceeding KVM_MAX_IRQ_ROUTES
tracing: Handle NULL formats in hold_module_trace_bprintk_format()
base: make module_create_drivers_dir race-free
iio: Fix error handling in iio_trigger_attach_poll_func
staging: iio: accel: fix error check
iio: accel: kxsd9: fix the usage of spi_w8r8()
iio:ad7266: Fix broken regulator error handling
iio:ad7266: Fix probe deferral for vref
tty/vt/keyboard: fix OOB access in do_compute_shiftstate()
ALSA: dummy: Fix a use-after-free at closing
ALSA: au88x0: Fix calculation in vortex_wtdma_bufshift()
ALSA: ctl: Stop notification after disconnection
ALSA: timer: Fix leak in SNDRV_TIMER_IOCTL_PARAMS
ALSA: timer: Fix leak in events via snd_timer_user_ccallback
ALSA: timer: Fix leak in events via snd_timer_user_tinterrupt
scsi: fix race between simultaneous decrements of ->host_failed
scsi: remove scsi_end_request
Fix reconnect to not defer smb3 session reconnect long after socket reconnect
xen/acpi: allow xen-acpi-processor driver to load on Xen 4.7
s390/seccomp: fix error return for filtered system calls
fs/nilfs2: fix potential underflow in call to crc32_le
arc: unwind: warn only once if DW2_UNWIND is disabled
xen/pciback: Fix conf_space read/write overlap check.
Revert "ecryptfs: forbid opening files without mmap handler"
ecryptfs: don't allow mmap when the lower fs doesn't support it
ARC: use ASL assembler mnemonic
qeth: delete napi struct when removing a qeth device
mmc: block: fix packed command header endianness
can: at91_can: RX queue could get stuck at high bus load
can: fix oops caused by wrong rtnl dellink usage
ipr: Clear interrupt on croc/crocodile when running with LSI
net: mvneta: set real interrupt per packet for tx_done
sctp: Prevent soft lockup when sctp_accept() is called during a timeout event
x86/mm: Improve switch_mm() barrier comments
KEYS: 64-bit MIPS needs to use compat_sys_keyctl for 32-bit userspace
scsi_lib: correctly retry failed zero length REQ_TYPE_FS commands
block: fix use-after-free in seq file
fuse: fix wrong assignment of ->flags in fuse_send_init()
net/irda: fix NULL pointer dereference on memory allocation failure
gpio: pca953x: Fix NBANK calculation for PCA9536
hp-wmi: Fix wifi cannot be hard-unblocked
s5p-mfc: Set device name for reserved memory region devs
s5p-mfc: Add release callback for memory region devs
Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU
cifs: Check for existing directory when opening file with O_CREAT
netlabel: add address family checks to netlbl_{sock,req}_delattr()
balloon: check the number of available pages in leak balloon
ftrace/recordmcount: Work around for addition of metag magic but not relocations
metag: Fix __cmpxchg_u32 asm constraint for CMP
ubi: Make volume resize power cut aware
ubi: Fix race condition between ubi device creation and udev
dm flakey: error READ bios during the down_interval
module: Invalidate signatures on force-loaded modules
be2iscsi: Fix bogus WARN_ON length check
squash mm: Export migrate_page_... : also make it non-static
HID: hid-input: Add parentheses to quell gcc warning
ALSA: oxygen: Fix logical-not-parentheses warning
net: rfkill: Do not ignore errors from regulator_enable()
isdn: hfcpci_softirq: get func return to suppress compiler warning
stb6100: fix buffer length check in stb6100_write_reg_range()
spi: spi-xilinx: cleanup a check in xilinx_spi_txrx_bufs()
Linux 3.10.103
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
drivers/usb/core/quirks.c
fs/fuse/inode.c
kernel/panic.c
net/ipv4/tcp_input.c
commit ff9f8a7cf935468a94d9927c68b00daae701667e upstream.
We perform the conversion between kernel jiffies and ms only when
exporting kernel value to user space.
We need to do the opposite operation when value is written by user.
Only matters when HZ != 1000
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Add the kptr_restrict setting of 4 which results in %pa and
%p[rR] values being replaced by zeros.
BUG: 30368199
Change-Id: I2cfac7cd0d9c05dbad07c683fac79aea8c2ba59d
Signed-off-by: Dave Weinstein <olorin@google.com>
Add the kptr_restrict setting of 3 which results in both
%p and %pK values being replaced by zeros.
Add an additional %pP value inspired by the Grsecurity
option which explicitly whitelists pointers for output.
This patch is based on work by William Roberts
<william.c.roberts@intel.com>
BUG: 30368199
Change-Id: Ic5cef86617f7758514271edd67199683d2c4e2bb
Signed-off-by: Dave Weinstein <olorin@google.com>
commit 759c01142a5d0f364a462346168a56de28a80f52 upstream.
On no-so-small systems, it is possible for a single process to cause an
OOM condition by filling large pipes with data that are never read. A
typical process filling 4000 pipes with 1 MB of data will use 4 GB of
memory. On small systems it may be tricky to set the pipe max size to
prevent this from happening.
This patch makes it possible to enforce a per-user soft limit above
which new pipes will be limited to a single page, effectively limiting
them to 4 kB each, as well as a hard limit above which no new pipes may
be created for this user. This has the effect of protecting the system
against memory abuse without hurting other users, and still allowing
pipes to work correctly though with less data at once.
The limit are controlled by two new sysctls : pipe-user-pages-soft, and
pipe-user-pages-hard. Both may be disabled by setting them to zero. The
default soft limit allows the default number of FDs per process (1024)
to create pipes of the default size (64kB), thus reaching a limit of 64MB
before starting to create only smaller pipes. With 256 processes limited
to 1024 FDs each, this results in 1024*64kB + (256*1024 - 1024) * 4kB =
1084 MB of memory allocated for a user. The hard limit is disabled by
default to avoid breaking existing applications that make intensive use
of pipes (eg: for splicing).
CVE-2016-2847
Reported-by: socketpair@gmail.com
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Mitigates: CVE-2013-4312 (Linux 2.0+)
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Signed-off-by: Chas Williams <3chas3@gmail.com>
(cherry picked from commit https://lkml.org/lkml/2015/12/21/337)
ASLR only uses as few as 8 bits to generate the random offset for the
mmap base address on 32 bit architectures. This value was chosen to
prevent a poorly chosen value from dividing the address space in such
a way as to prevent large allocations. This may not be an issue on all
platforms. Allow the specification of a minimum number of bits so that
platforms desiring greater ASLR protection may determine where to place
the trade-off.
Bug: 24047224
Signed-off-by: Daniel Cashman <dcashman@android.com>
Signed-off-by: Daniel Cashman <dcashman@google.com>
Change-Id: I66ac01c6f4f2c8dcfc84d1f1e99490b8385b3ed4
sched_wake_to_idle tunable is obsoleted by sched_prefer_idle tunable
in HMP scheduler. Remove the same when CONFIG_SCHED_HMP is defined
Change-Id: I7bcf12cc3c50df5ef09261f097711c9f29ec63a4
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Remove the global sysctl_sched_prefer_idle flag and replace it with a
per-cpu prefer_idle flag. The per-cpu flag is expected to same for all
cpus in a cluster. It thus provides convenient means to disable
packing in one cluster while allowing packing in another cluster.
Change-Id: Ie4cc73bb1a55b4eac5697be38e558546161faca1
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Add sysctl to enable energy awareness at runtime. This is useful for
performance/power tuning/measurements and debugging. In addition this
will match up with the Documentation/scheduler/sched-hmp.txt documentation.
Change-Id: I0a9185498640d66917b38bf5d55f6c59fc60ad5c
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
When upmigrate_min_nice is changed dec_nr_big_small_task() can trigger
BUG_ON(rq->nr_big_tasks < 0). This happens when there is a task which was
considered as non-big task due to its nice > upmigrate_min_nice and later
upmigrate_min_nice is changed to higher value so the task becomes big task.
In this case runqueue still has nr_big_tasks = 0 incorrectly with current
implementation. Consequently next scheduler tick sees a big task to
schedule and try to decrease nr_big_tasks which is already 0.
Introduce sched_upmigrate_min_nice which is updated atomically and re-count
the number of big and small tasks to fix BUG_ON() triggering.
Change-Id: I6f5fc62ed22bbe5c52ec71613082a6e64f406e58
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
A new tunable exists that allow task migration to be throttled when the
scheduler tries to do task migrations due to Energy Awareness (EA). This
tunable is only taken into account when migrations occur in the tick
path. Extend the usage of the tunable to take into account the load
balancer (lb) path also.
In addition ensure that the start of task execution on a CPU is updated
correctly. If a task is preempted but still runnable on the same CPU the
start of execution should not be updated. Only update the start of
execution when a task wakes up after sleep or moves to a new CPU.
Change-Id: I6b2a8e06d8d2df8e0f9f62b7aba3b4ee4b2c1c4d
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
Power values for cpus can drop quite considerably when it goes idle.
As a result, the best choice for running a single task in a cluster
can vary quite rapidly. As the task keeps hopping cpus, other cpus go
idle and start being seen as more favorable target for running a task,
leading to task migrating almost every scheduler tick!
Prevent this by keeping track of when a task started running on a cpu
and allowing task migration in tick path (migration_needed()) on
account of energy efficiency reasons only if the task has run
sufficiently long (as determined by sysctl_sched_min_runtime
variable).
Note that currently sysctl_sched_min_runtime setting is considered
only in scheduler_tick()->migration_needed() path and not in
idle_balance() path. In other words, a task could be migrated to
another cpu which did a idle_balance(). This limitation should not
affect high-frequency migrations seen typically (when a single
high-demand task runs on high-performance cpu).
CRs-Fixed: 756570
Change-Id: I96413b7a81b623193c3bbcec6f3fa9dfec367d99
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
sysctl_sched_prefer_idle lets the scheduler bias selection of
idle cpus over mostly idle cpus for tasks. This knob could be
useful to control balance between power and performance.
Change-Id: Ide6eef684ef94ac8b9927f53c220ccf94976fe67
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
It may be desirable to be able to alter the scehd_cpu_high_irqload
setting easily, so make it a runtime tunable value.
Change-Id: I832030eec2aafa101f0f435a4fd2d401d447880d
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
sched_mostly_idle_load and sched_mostly_idle_nr_run knobs help pack
tasks on cpus to some extent. In some cases, it may be desirable to
have different packing limits for different cpus. For example, pack to
a higher limit on high-performance cpus compared to power-efficient
cpus.
This patch removes the global mostly_idle tunables and makes them
per-cpu, thus letting task packing behavior to be controlled in a
fine-grained manner.
Change-Id: Ifc254cda34b928eae9d6c342ce4c0f64e531e6c2
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Make criteria for notifying governor to be per-cpu. Governor is
notified of any large change in cpu's busy time statistics
(rq->prev_runnable_sum) since the last reported value.
Change-Id: I727354d994d909b166d093b94d3dade7c7dddc0d
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Make the tunables used for deciding the need for notification to be on
absolute scale. The earlier scale (in percent terms relative to
cur_freq) does not work well with available range of frequencies. For
example, 100% tunable value would work well for lower range of
frequencies and not for higher range. Having the tunable to be on
absolute scale makes tuning more realistic.
Change-Id: I35a8c4e2f2e9da57f4ca4462072276d06ad386f1
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
rq->curr/prev_runnable_sum counters represent cpu demand from various
tasks that have run on a cpu. Any task that runs on a cpu will have a
representation in rq->curr_runnable_sum. Their partial_demand value
will be included in rq->curr_runnable_sum. Since partial_demand is
derived from historical load samples for a task, rq->curr_runnable_sum
could represent "inflated/un-realistic" cpu usage. As an example, lets
say that task with partial_demand of 10ms runs for only 1ms on a cpu.
What is included in rq->curr_runnable_sum is 10ms (and not the actual
execution time of 1ms). This leads to cpu busy time being reported on
the upside causing frequency to stay higher than necessary.
This patch fixes cpu busy accounting scheme to strictly represent
actual usage. It also provides for conditional fixup of busy time upon
migration and upon heavy-task wakeup.
CRs-Fixed: 691443
Change-Id: Ic4092627668053934049af4dfef65d9b6b901e6b
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Currently we send notification to governor not taking note of cpus
that are synchronized with regard to their frequency. As a result,
scheduler could send pointless notifications (notification spam!).
Avoid this by considering synchronized cpus and alerting governor only
when the highest demand of any cpu within cluster far exceeds or falls
behind current frequency.
Change-Id: I74908b5a212404ca56b38eb94548f9b1fbcca33d
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Support legacy mode, which results in busy time being seen by governor
that is close to what it would have seen via existing APIs i.e
get_cpu_idle_time_us(), get_cpu_iowait_time_us() and
get_cpu_idle_time_jiffy(). In particular, legacy mode means that only
task execution time is counted in rq->curr_runnable_sum and
rq->prev_runnable_sum. Also task migration does not result in
adjustment of those counters.
Change-Id: If374ccc084aa73f77374b6b3ab4cd0a4ca7b8c90
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Remove code duplication associated with update of various window-stats
related sysctl tunables
Change-Id: I64e29ac065172464ba371a03758937999c42a71f
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
* commit 'v3.10.49': (529 commits)
Linux 3.10.49
ACPI / battery: Retry to get battery information if failed during probing
x86, ioremap: Speed up check for RAM pages
Score: Modify the Makefile of Score, remove -mlong-calls for compiling
Score: The commit is for compiling successfully.
Score: Implement the function csum_ipv6_magic
score: normalize global variables exported by vmlinux.lds
rtmutex: Plug slow unlock race
rtmutex: Handle deadlock detection smarter
rtmutex: Detect changes in the pi lock chain
rtmutex: Fix deadlock detector for real
ring-buffer: Check if buffer exists before polling
drm/radeon: stop poisoning the GART TLB
drm/radeon: fix typo in golden register setup on evergreen
ext4: disable synchronous transaction batching if max_batch_time==0
ext4: clarify error count warning messages
ext4: fix unjournalled bg descriptor while initializing inode bitmap
dm io: fix a race condition in the wake up code for sync_io
Drivers: hv: vmbus: Fix a bug in the channel callback dispatch code
clk: spear3xx: Use proper control register offset
...
In addition to bringing in upstream commits, this merge also makes minor
changes to mainitain compatibility with upstream:
The definition of list_next_entry in qcrypto.c and ipa_dp.c has been
removed, as upstream has moved the definition to list.h. The implementation
of list_next_entry was identical between the two.
irq.c, for both arm and arm64 architecture, has had its calls to
__irq_set_affinity_locked updated to reflect changes to the API upstream.
Finally, as we have removed the sleep_length member variable of the
tick_sched struct, all changes made by upstream commit ec804bd do not
apply to our tree and have been removed from this merge. Only
kernel/time/tick-sched.c is impacted.
Change-Id: I63b7e0c1354812921c94804e1f3b33d1ad6ee3f1
Signed-off-by: Ian Maund <imaund@codeaurora.org>
Make RAVG_HIST_SIZE available from /proc/sys/kernel/sched_ravg_hist_size
to allow tuning of the size of the history that is used in computation
of task demand.
CRs-fixed: 706138
Change-Id: Id54c1e4b6e974a62d787070a0af1b4e8ce3b4be6
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
sched_window_stat_policy influences task demand and thus various
statistics maintained per-cpu like curr_runnable_sum. Changing policy
non-atomically would lead to improper accounting. For example, when
task is enqueued on a cpu's runqueue, its demand that is added to
rq->cumulative_runnable_avg could be based on AVG policy and when its
dequeued its demand that is removed can be based on MAX, leading to
erroneous accounting.
This change causes policy change to be "atomic" i.e all cpu's rq->lock
are held and all task's window-stats are reset before policy is changed.
Change-Id: I6a3e4fb7bc299dfc5c367693b5717a1ef518c32d
CRs-Fixed: 687409
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
There is no real need to control HMP and power-aware task placement at
runtime after kernel has booted. Boot-time control should be
sufficient. Not allowing for runtime (sysctl) support simplifies the
code quite a bit.
Also rename sysctl_sched_enable_hmp_task_placement to be shorter.
Change-Id: I60cae51a173c6f73b79cbf90c50ddd41a27604aa
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Certain low latency bursty workloads require immediate use of highest
capacity CPUs in HMP systems. Existing load tracking mechanisms may be
unable to respond to the sudden surge in the system load within the
latency requirements. Introduce the scheduler boost feature for such
workloads. While boost is in effect the scheduler bypasses regular load
based task placement and prefers highest capacity CPUs in the system
for all non-small fair sched class tasks. Provide both a kernel and
userspace API for software that may have apriori knowledge about the
system workload.
Change-Id: I783f585d1f8c97219e629d9c54f712318821922f
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
After a migration occurs the source and destination CPUs may
not be running at frequencies which match the new task load on
those CPUs.
Previously, the scheduler was notifying cpufreq anytime a task
greater than a certain size migrates. This is suboptimal however
since this does not take into account the CPU's current
frequency and other task activity that may be present.
Change-Id: I5092bda3a517e1343f97e5a455957c25ee19b549
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
When the number of tasks intended for a cluster exceed the number of
mostly idle CPUs in that cluster, the scheduler currently freely uses
CPUs in other clusters if possible. While this is optimal for
performance the power trade off can be quite significant. Introduce
spill threshold tunables that govern the extent to which the scheduler
should attempt to contain tasks within a cluster.
Change-Id: I797e6c6b2aa0c3a376dad93758abe1d587663624
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
When a task moves between CPUs in two different frequency domains
the cpufreq governor may wish to immediately modify the frequency
of both the source and destination CPUs of the migrating task.
A tunable is provided to establish what size task is considered
"significant" enough to warrant notifying cpufreq.
Also fix a bug that would cause load to not be accounted properly
during wakeup migrations.
Change-Id: Ie8f6b1cc4d43a602840dac18590b42a81327c95a
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
The sched_enable_power_aware sysctl will control whether
or not scheduling decisions are influenced by the power
consumption of individual CPUs.
Change-Id: I312f892cf76a3fccc4ecc8aa6703908b205267f0
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
HMP systems have cpus with different power and performance
characteristics. Some cpus could offer better power at cost of lower
performance while other cpus could offer better performance at cost of
higher power. As a result, bandwidth consumed by a task to do some
"fixed" amount of work could vary across cpus.
Optimal task placement on HMP would involve placing a task on a cpu
where it can meet its performance goals at lowest power cost. Since
kernel has little to no awareness of performance goals of
applications, we guestimate whether task is meeting its performance
goals or not by looking at its cpu bandwidth consumption. High
bandwidth consumption could imply that task's performance can improve
by running on cpus with better capacity/performance-characterisitcs.
This patch makes the basic changes to support HMP. It provides a
configurable threshold and any task consuming bandwidth in excess of
threshold will be placed on a cpu with better capacity.
Change-Id: I3fd98edd430f73342fbef06411e8b2d1cf2f56fa
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Add a compile-time flag to enable or disable scheduler features for
HMP (heterogenous multi-processor) systems. Main feature deals with
optimizing task placement for best power/performance tradeoff.
Also extend features currently dependent on CONFIG_SCHED_FREQ_INPUT to
be enabled for CONFIG_HMP as well.
Change-Id: I03b3942709a80cc19f7b934a8089e1d84c14d72d
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Introduce a compile time flag to enable scheduler guidance of
frequency selection. This flag is also used to turn on or off
window-based load stats feature.
Having a compile time flag will let some platforms avoid any
overhead that may be present with this scheduler feature.
Change-Id: Id8dec9839f90dcac82f58ef7e2bd0ccd0b6bd16c
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Following cleanups and improvements are made to window-based load
stats feature:
* Add sysctl to pick max, avg or most recent samples as task's
demand.
* Fix overflow possibility in calculation of sum for average policy.
* Use unscaled statistics when a task is running on a CPU which is
thermally throttled.
Change-Id: I8293565ca0c2a785dadf8adb6c67f579a445ed29
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
* commit 'v3.10.40': (203 commits)
Linux 3.10.40
ARC: !PREEMPT: Ensure Return to kernel mode is IRQ safe
drm: cirrus: add power management support
Input: synaptics - add min/max quirk for ThinkPad Edge E431
Input: synaptics - add min/max quirk for ThinkPad T431s, L440, L540, S1 Yoga and X1
lockd: ensure we tear down any live sockets when socket creation fails during lockd_up
dm thin: fix dangling bio in process_deferred_bios error path
dm transaction manager: fix corruption due to non-atomic transaction commit
Skip intel_crt_init for Dell XPS 8700
mtd: sm_ftl: heap corruption in sm_create_sysfs_attributes()
mtd: nuc900_nand: NULL dereference in nuc900_nand_enable()
mtd: atmel_nand: Disable subpage NAND write when using Atmel PMECC
tgafb: fix data copying
gpio: mxs: Allow for recursive enable_irq_wake() call
rtlwifi: rtl8188ee: initialize packet_beacon
rtlwifi: rtl8192se: Fix regression due to commit 1bf4bbb
rtlwifi: rtl8192se: Fix too long disable of IRQs
rtlwifi: rtl8192cu: Fix too long disable of IRQs
rtlwifi: rtl8188ee: Fix too long disable of IRQs
rtlwifi: rtl8723ae: Fix too long disable of IRQs
...
Change-Id: If5388cf980cb123e35e1b29275ba288c89c5aa18
Signed-off-by: Ian Maund <imaund@codeaurora.org>
commit 723478c8a471403c53cf144999701f6e0c4bbd11 upstream.
/proc/sys/kernel/perf_event_max_sample_rate will accept
negative values as well as 0.
Negative values are unreasonable, and 0 causes a
divide by zero exception in perf_proc_update_handler.
This patch enforces a lower limit of 1.
Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/5242DB0C.4070005@t-online.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Weng Meiling <wengmeiling.weng@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 14c63f17b1fde5a575a28e96547a22b451c71fb5 upstream.
This patch keeps track of how long perf's NMI handler is taking,
and also calculates how many samples perf can take a second. If
the sample length times the expected max number of samples
exceeds a configurable threshold, it drops the sample rate.
This way, we don't have a runaway sampling process eating up the
CPU.
This patch can tend to drop the sample rate down to level where
perf doesn't work very well. *BUT* the alternative is that my
system hangs because it spends all of its time handling NMIs.
I'll take a busted performance tool over an entire system that's
busted and undebuggable any day.
BTW, my suspicion is that there's still an underlying bug here.
Using the HPET instead of the TSC is definitely a contributing
factor, but I suspect there are some other things going on.
But, I can't go dig down on a bug like that with my machine
hanging all the time.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: paulus@samba.org
Cc: acme@ghostprotocols.net
Cc: Dave Hansen <dave@sr71.net>
[ Prettified it a bit. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Weng Meiling <wengmeiling.weng@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Some tasks can have a sporadic load pattern such that they can suddenly
start running for longer intervals of time after running for shorter
durations. To recognize such sharp increase in tasks' demands, max
between the average of 5 window load samples and the most recent sample
is chosen as the task demand.
Make the window size (sched_ravg_window) configurable at boot up
time. To prevent users from setting inappropriate values for window
size, min and max limits are defined. As 'ravg' struct tracks load for
both real-time and non real-time tasks it is moved out of sched_entity
struct.
In order to prevent changing function signatures for move_tasks() and
move_one_task() per-cpu variables are defined to track the total load
moved. In case multiple tasks are selected to migrate in one load
balance operation, loads > 100 could be sent through migration notifiers.
Prevent this scenario by setting mnd.load to 100 in such cases.
Define wrapper functions to compute cpu demands for tasks and to change
rq->cumulative_runnable_avg.
Change-Id: I9abfbf3b5fe23ae615a6acd3db9580cfdeb515b4
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Signed-off-by: Rohit Gupta <rohgup@codeaurora.org>
commit 80df28476505ed4e6701c3448c63c9229a50c655 upstream.
As sysctl_hung_task_timeout_sec is unsigned long, when this value is
larger then LONG_MAX/HZ, the function schedule_timeout_interruptible in
watchdog will return immediately without sleep and with print :
schedule_timeout: wrong timeout value ffffffffffffff83
and then the funtion watchdog will call schedule_timeout_interruptible
again and again. The screen will be filled with
"schedule_timeout: wrong timeout value ffffffffffffff83"
This patch does some check and correction in sysctl, to let the function
schedule_timeout_interruptible allways get the valid parameter.
Signed-off-by: Liu Hua <sdu.liu@huawei.com>
Tested-by: Satoru Takeuchi <satoru.takeuchi@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add a change to send notify_on_migrate hints on wakeups of
foreground tasks from scheduler if their load is above
wakeup_load_thresholds (default value is 60).
These hints can be used to choose an appropriate CPU frequency
corresponding to the load of the task being woken up.
Change-Id: Ieca413c1a8bd2b14a15a7591e8e15d22925c42ca
Signed-off-by: Rohit Gupta <rohgup@codeaurora.org>
Provide a metric per task that specifies how cpu bound a task is. Task
execution is monitored over several time windows and the fraction of
the window for which task was found to be executing or wanting to run
is recorded as task's demand. Windows over which task was sleeping are
ignored. We track last 5 recent windows for every task and the maximum
demand seen in any of the previous 5 windows (where task had some
activity) drives freq demand for every task.
A per-cpu metric (rq->cumulative_runnable_avg) is also provided which
is an aggregation of cpu demand of all tasks currently enqueued on it.
rq->cumulative_runnable_avg will be useful to know if cpu frequency
will need to be changed to match task demand.
Change-Id: Ib83207b9ba8683cd3304ee8a2290695c34f08fe2
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Define boot_reason and cold_boot variables in the arm64 version
of setup.c so that arm64 targets can export the boot_reason and
cold_boot sysctl entries.
This feature is required by the qpnp-power-on driver.
Change-Id: Id2d4ff5b8caa2e6a35d4ac61e338963d602c8b84
Signed-off-by: David Collins <collinsd@codeaurora.org>
Add a userspace visible knob to tell the VM to keep an extra amount
of memory free, by increasing the gap between each zone's min and
low watermarks.
This is useful for realtime applications that call system
calls and have a bound on the number of allocations that happen
in any short time period. In this application, extra_free_kbytes
would be left at an amount equal to or larger than than the
maximum number of allocations that happen in any burst.
It may also be useful to reduce the memory use of virtual
machines (temporarily?), in a way that does not cause memory
fragmentation like ballooning does.
[ccross]
Revived for use on old kernels where no other solution exists.
The tunable will be removed on kernels that do better at avoiding
direct reclaim.
Change-Id: I765a42be8e964bfd3e2886d1ca85a29d60c3bb3e
Signed-off-by: Rik van Riel<riel@redhat.com>
Signed-off-by: Colin Cross <ccross@android.com>
Git-commit: 92189d47f66c67e5fd92eafaa287e153197a454f
Git-repo: https://android.googlesource.com/kernel/common/
[bhargavuln@codeaurora.org: resolve trivial merge conflicts]
Signed-off-by: Bhargav Upperla <bhargavuln@codeaurora.org>
Add a cold_boot parameter which supplements the
boot_reason sysctl entry with information about
whether the system was booted from cold or warm state.
/proc/sys/kernel/cold_boot entry is updated with 1 or 0 when
system was booted from cold or warm boot state respecitively.
CRs-Fixed: 461256
Change-Id: I2bc5d80c8f26eb9e9dbb4b34960d991a51a224e4
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
Nathan Chancellor