47 Commits
| Author | SHA1 | Message | Date |
|---|---|---|---|
Tim Chen
|
41b1d66c35 |
sched/rt: Reduce rq lock contention by eliminating locking of non-feasible target
commit 80e3d87b2c5582db0ab5e39610ce3707d97ba409 upstream. This patch adds checks that prevens futile attempts to move rt tasks to a CPU with active tasks of equal or higher priority. This reduces run queue lock contention and improves the performance of a well known OLTP benchmark by 0.7%. Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Shawn Bohrer <sbohrer@rgmadvisors.com> Cc: Suruchi Kadu <suruchi.a.kadu@intel.com> Cc: Doug Nelson<doug.nelson@intel.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/1421430374.2399.27.camel@schen9-desk2.jf.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> |
|
Shawn Bohrer
|
524e3d8583 |
sched/rt: Remove redundant nr_cpus_allowed test
In
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|
Srivatsa Vaddagiri
|
cdbbd96a7f |
sched: Consolidate cluster-specific information
Many cluster-shared attributes like cur_freq, max_freq etc are needlessly maintained in per-cpu 'struct rq' currently. Consolidate them in cluster structure. Change-Id: I36e508082bb1e8a7c1a60e99902b5bc260f5f8f6 Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org> Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org> Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org> Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org> Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org> |
|
Juri Lelli
|
82d98b95af |
sched/deadline: Prevent rt_time growth to infinity
Kirill Tkhai noted: Since deadline tasks share rt bandwidth, we must care about bandwidth timer set. Otherwise rt_time may grow up to infinity in update_curr_dl(), if there are no other available RT tasks on top level bandwidth. RT task were in fact throttled right after they got enqueued, and never executed again (rt_time never again went below rt_runtime). Peter then proposed to accrue DL execution on rt_time only when rt timer is active, and proposed a patch (this patch is a slight modification of that) to implement that behavior. While this solves Kirill problem, it has a drawback. Indeed, Kirill noted again: It looks we may get into a situation, when all CPU time is shared between RT and DL tasks: rt_runtime = n rt_period = 2n | RT working, DL sleeping | DL working, RT sleeping | ----------------------------------------------------------- | (1) duration = n | (2) duration = n | (repeat) |--------------------------|------------------------------| | (rt_bw timer is running) | (rt_bw timer is not running) | No time for fair tasks at all. While this can happen during the first period, if rq is always backlogged, RT tasks won't have the opportunity to execute anymore: rt_time reached rt_runtime during (1), suppose after (2) RT is enqueued back, it gets throttled since rt timer didn't fire, replenishment is from now on eaten up by DL tasks that accrue their execution on rt_time (while rt timer is active - we have an RT task waiting for replenishment). FAIR tasks are not touched after this first period. Ok, this is not ideal, and the situation is even worse! What above (the nice case), practically never happens in reality, where your rt timer is not aligned to tasks periods, tasks are in general not periodic, etc.. Long story short, you always risk to overload your system. This patch is based on Peter's idea, but exploits an additional fact: if you don't have RT tasks enqueued, it makes little sense to continue incrementing rt_time once you reached the upper limit (DL tasks have their own mechanism for throttling). This cures both problems: - no matter how many DL instances in the past, you'll have an rt_time slightly above rt_runtime when an RT task is enqueued, and from that point on (after the first replenishment), the task will normally execute; - you can still eat up all bandwidth during the first period, but not anymore after that, remember that DL execution will increment rt_time till the upper limit is reached. The situation is still not perfect! But, we have a simple solution for now, that limits how much you can jeopardize your system, as we keep working towards the right answer: RT groups scheduled using deadline servers. Reported-by: Kirill Tkhai <tkhai@yandex.ru> Signed-off-by: Juri Lelli <juri.lelli@gmail.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20140225151515.617714e2f2cd6c558531ba61@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Git-Commit: faa5993736d9b44b508cab4f1f3a77d66641c6f4 Git-Repo: git://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org> |
|
|
Juri Lelli
|
0316441630 |
sched/deadline: Add SCHED_DEADLINE SMP-related data structures & logic
Introduces data structures relevant for implementing dynamic
migration of -deadline tasks and the logic for checking if
runqueues are overloaded with -deadline tasks and for choosing
where a task should migrate, when it is the case.
Adds also dynamic migrations to SCHED_DEADLINE, so that tasks can
be moved among CPUs when necessary. It is also possible to bind a
task to a (set of) CPU(s), thus restricting its capability of
migrating, or forbidding migrations at all.
The very same approach used in sched_rt is utilised:
- -deadline tasks are kept into CPU-specific runqueues,
- -deadline tasks are migrated among runqueues to achieve the
following:
* on an M-CPU system the M earliest deadline ready tasks
are always running;
* affinity/cpusets settings of all the -deadline tasks is
always respected.
Therefore, this very special form of "load balancing" is done with
an active method, i.e., the scheduler pushes or pulls tasks between
runqueues when they are woken up and/or (de)scheduled.
IOW, every time a preemption occurs, the descheduled task might be sent
to some other CPU (depending on its deadline) to continue executing
(push). On the other hand, every time a CPU becomes idle, it might pull
the second earliest deadline ready task from some other CPU.
To enforce this, a pull operation is always attempted before taking any
scheduling decision (pre_schedule()), as well as a push one after each
scheduling decision (post_schedule()). In addition, when a task arrives
or wakes up, the best CPU where to resume it is selected taking into
account its affinity mask, the system topology, but also its deadline.
E.g., from the scheduling point of view, the best CPU where to wake
up (and also where to push) a task is the one which is running the task
with the latest deadline among the M executing ones.
In order to facilitate these decisions, per-runqueue "caching" of the
deadlines of the currently running and of the first ready task is used.
Queued but not running tasks are also parked in another rb-tree to
speed-up pushes.
Signed-off-by: Juri Lelli <juri.lelli@gmail.com>
Signed-off-by: Dario Faggioli <raistlin@linux.it>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1383831828-15501-5-git-send-email-juri.lelli@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
[rameezmustafa@codeaurora.org: Port to msm-3.10]
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
Git-Commit: 1baca4ce16b8cc7d4f50be1f7914799af30a2861
Git-Repo: git://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git
|
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Frederic Weisbecker
|
dbb0220237 |
sched: Use an accessor to read the rq clock
Read the runqueue clock through an accessor. This prepares for adding a debugging infrastructure to detect missing or redundant calls to update_rq_clock() between a scheduler's entry and exit point. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Paul Turner <pjt@google.com> Cc: Mike Galbraith <efault@gmx.de> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1365724262-20142-6-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> [rameezmustafa@codeaurora.org: Port to msm-3.10] Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org> Git-Commit: 78becc27097585c6aec7043834cadde950ae79f2 Git-Repo: git://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git |
|
Ian Maund
|
8b08aa9e75 |
This is the 3.10.67 stable release
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Merge commit 'v3.10.67' into msm-3.10
This merge brings us up to date with upstream kernel.org tag v3.10.67.
It also contains changes to allow forbidden warnings introduced in
the commit 'core, nfqueue, openvswitch: Orphan frags in skb_zerocopy
and handle errors'. Once upstream has corrected these warnings, the
changes to scripts/gcc-wrapper.py, in this commit, can be reverted.
* commit 'v3.10.67' (915 commits)
Linux 3.10.67
md/raid5: fetch_block must fetch all the blocks handle_stripe_dirtying wants.
ext4: fix warning in ext4_da_update_reserve_space()
quota: provide interface for readding allocated space into reserved space
crypto: add missing crypto module aliases
crypto: include crypto- module prefix in template
crypto: prefix module autoloading with "crypto-"
drbd: merge_bvec_fn: properly remap bvm->bi_bdev
Revert "swiotlb-xen: pass dev_addr to swiotlb_tbl_unmap_single"
ipvs: uninitialized data with IP_VS_IPV6
KEYS: close race between key lookup and freeing
sata_dwc_460ex: fix resource leak on error path
x86/asm/traps: Disable tracing and kprobes in fixup_bad_iret and sync_regs
x86, tls: Interpret an all-zero struct user_desc as "no segment"
x86, tls, ldt: Stop checking lm in LDT_empty
x86/tsc: Change Fast TSC calibration failed from error to info
x86, hyperv: Mark the Hyper-V clocksource as being continuous
clocksource: exynos_mct: Fix bitmask regression for exynos4_mct_write
can: dev: fix crtlmode_supported check
bus: mvebu-mbus: fix support of MBus window 13
ARM: dts: imx25: Fix PWM "per" clocks
time: adjtimex: Validate the ADJ_FREQUENCY values
time: settimeofday: Validate the values of tv from user
dm cache: share cache-metadata object across inactive and active DM tables
ipr: wait for aborted command responses
drm/i915: Fix mutex->owner inspection race under DEBUG_MUTEXES
scripts/recordmcount.pl: There is no -m32 gcc option on Super-H anymore
ALSA: usb-audio: Add mic volume fix quirk for Logitech Webcam C210
libata: prevent HSM state change race between ISR and PIO
pinctrl: Fix two deadlocks
gpio: sysfs: fix gpio device-attribute leak
gpio: sysfs: fix gpio-chip device-attribute leak
Linux 3.10.66
s390/3215: fix tty output containing tabs
s390/3215: fix hanging console issue
fsnotify: next_i is freed during fsnotify_unmount_inodes.
netfilter: ipset: small potential read beyond the end of buffer
mmc: sdhci: Fix sleep in atomic after inserting SD card
LOCKD: Fix a race when initialising nlmsvc_timeout
x86, um: actually mark system call tables readonly
um: Skip futex_atomic_cmpxchg_inatomic() test
decompress_bunzip2: off by one in get_next_block()
ARM: shmobile: sh73a0 legacy: Set .control_parent for all irqpin instances
ARM: omap5/dra7xx: Fix frequency typos
ARM: clk-imx6q: fix video divider for rev T0 1.0
ARM: imx6q: drop unnecessary semicolon
ARM: dts: imx25: Fix the SPI1 clocks
Input: I8042 - add Acer Aspire 7738 to the nomux list
Input: i8042 - reset keyboard to fix Elantech touchpad detection
can: kvaser_usb: Don't send a RESET_CHIP for non-existing channels
can: kvaser_usb: Reset all URB tx contexts upon channel close
can: kvaser_usb: Don't free packets when tight on URBs
USB: keyspan: fix null-deref at probe
USB: cp210x: add IDs for CEL USB sticks and MeshWorks devices
USB: cp210x: fix ID for production CEL MeshConnect USB Stick
usb: dwc3: gadget: Stop TRB preparation after limit is reached
usb: dwc3: gadget: Fix TRB preparation during SG
OHCI: add a quirk for ULi M5237 blocking on reset
gpiolib: of: Correct error handling in of_get_named_gpiod_flags
NFSv4.1: Fix client id trunking on Linux
ftrace/jprobes/x86: Fix conflict between jprobes and function graph tracing
vfio-pci: Fix the check on pci device type in vfio_pci_probe()
uvcvideo: Fix destruction order in uvc_delete()
smiapp: Take mutex during PLL update in sensor initialisation
af9005: fix kernel panic on init if compiled without IR
smiapp-pll: Correct clock debug prints
video/logo: prevent use of logos after they have been freed
storvsc: ring buffer failures may result in I/O freeze
iscsi-target: Fail connection on short sendmsg writes
hp_accel: Add support for HP ZBook 15
cfg80211: Fix 160 MHz channels with 80+80 and 160 MHz drivers
ARC: [nsimosci] move peripherals to match model to FPGA
drm/i915: Force the CS stall for invalidate flushes
drm/i915: Invalidate media caches on gen7
drm/radeon: properly filter DP1.2 4k modes on non-DP1.2 hw
drm/radeon: check the right ring in radeon_evict_flags()
drm/vmwgfx: Fix fence event code
enic: fix rx skb checksum
alx: fix alx_poll()
tcp: Do not apply TSO segment limit to non-TSO packets
tg3: tg3_disable_ints using uninitialized mailbox value to disable interrupts
netlink: Don't reorder loads/stores before marking mmap netlink frame as available
netlink: Always copy on mmap TX.
Linux 3.10.65
mm: Don't count the stack guard page towards RLIMIT_STACK
mm: propagate error from stack expansion even for guard page
mm, vmscan: prevent kswapd livelock due to pfmemalloc-throttled process being killed
perf session: Do not fail on processing out of order event
perf: Fix events installation during moving group
perf/x86/intel/uncore: Make sure only uncore events are collected
Btrfs: don't delay inode ref updates during log replay
ARM: mvebu: disable I/O coherency on non-SMP situations on Armada 370/375/38x/XP
scripts/kernel-doc: don't eat struct members with __aligned
nilfs2: fix the nilfs_iget() vs. nilfs_new_inode() races
nfsd4: fix xdr4 inclusion of escaped char
fs: nfsd: Fix signedness bug in compare_blob
serial: samsung: wait for transfer completion before clock disable
writeback: fix a subtle race condition in I_DIRTY clearing
cdc-acm: memory leak in error case
genhd: check for int overflow in disk_expand_part_tbl()
USB: cdc-acm: check for valid interfaces
ALSA: hda - Fix wrong gpio_dir & gpio_mask hint setups for IDT/STAC codecs
ALSA: hda - using uninitialized data
ALSA: usb-audio: extend KEF X300A FU 10 tweak to Arcam rPAC
driver core: Fix unbalanced device reference in drivers_probe
x86, vdso: Use asm volatile in __getcpu
x86_64, vdso: Fix the vdso address randomization algorithm
HID: Add a new id 0x501a for Genius MousePen i608X
HID: add battery quirk for USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO keyboard
HID: roccat: potential out of bounds in pyra_sysfs_write_settings()
HID: i2c-hid: prevent buffer overflow in early IRQ
HID: i2c-hid: fix race condition reading reports
iommu/vt-d: Fix an off-by-one bug in __domain_mapping()
UBI: Fix double free after do_sync_erase()
UBI: Fix invalid vfree()
pstore-ram: Allow optional mapping with pgprot_noncached
pstore-ram: Fix hangs by using write-combine mappings
PCI: Restore detection of read-only BARs
ASoC: dwc: Ensure FIFOs are flushed to prevent channel swap
ASoC: max98090: Fix ill-defined sidetone route
ASoC: sigmadsp: Refuse to load firmware files with a non-supported version
ath5k: fix hardware queue index assignment
swiotlb-xen: pass dev_addr to swiotlb_tbl_unmap_single
can: peak_usb: fix memset() usage
can: peak_usb: fix cleanup sequence order in case of error during init
ath9k: fix BE/BK queue order
ath9k_hw: fix hardware queue allocation
ocfs2: fix journal commit deadlock
Linux 3.10.64
Btrfs: fix fs corruption on transaction abort if device supports discard
Btrfs: do not move em to modified list when unpinning
eCryptfs: Remove buggy and unnecessary write in file name decode routine
eCryptfs: Force RO mount when encrypted view is enabled
udf: Verify symlink size before loading it
exit: pidns: alloc_pid() leaks pid_namespace if child_reaper is exiting
ncpfs: return proper error from NCP_IOC_SETROOT ioctl
crypto: af_alg - fix backlog handling
userns: Unbreak the unprivileged remount tests
userns: Allow setting gid_maps without privilege when setgroups is disabled
userns: Add a knob to disable setgroups on a per user namespace basis
userns: Rename id_map_mutex to userns_state_mutex
userns: Only allow the creator of the userns unprivileged mappings
userns: Check euid no fsuid when establishing an unprivileged uid mapping
userns: Don't allow unprivileged creation of gid mappings
userns: Don't allow setgroups until a gid mapping has been setablished
userns: Document what the invariant required for safe unprivileged mappings.
groups: Consolidate the setgroups permission checks
umount: Disallow unprivileged mount force
mnt: Update unprivileged remount test
mnt: Implicitly add MNT_NODEV on remount when it was implicitly added by mount
mac80211: free management frame keys when removing station
mac80211: fix multicast LED blinking and counter
KEYS: Fix stale key registration at error path
isofs: Fix unchecked printing of ER records
x86/tls: Don't validate lm in set_thread_area() after all
dm space map metadata: fix sm_bootstrap_get_nr_blocks()
dm bufio: fix memleak when using a dm_buffer's inline bio
nfs41: fix nfs4_proc_layoutget error handling
megaraid_sas: corrected return of wait_event from abort frame path
mmc: block: add newline to sysfs display of force_ro
mfd: tc6393xb: Fail ohci suspend if full state restore is required
md/bitmap: always wait for writes on unplug.
x86, kvm: Clear paravirt_enabled on KVM guests for espfix32's benefit
x86_64, switch_to(): Load TLS descriptors before switching DS and ES
x86/tls: Disallow unusual TLS segments
x86/tls: Validate TLS entries to protect espfix
isofs: Fix infinite looping over CE entries
Linux 3.10.63
ALSA: usb-audio: Don't resubmit pending URBs at MIDI error recovery
powerpc: 32 bit getcpu VDSO function uses 64 bit instructions
ARM: sched_clock: Load cycle count after epoch stabilizes
igb: bring link up when PHY is powered up
ext2: Fix oops in ext2_get_block() called from ext2_quota_write()
nEPT: Nested INVEPT
net: sctp: use MAX_HEADER for headroom reserve in output path
net: mvneta: fix Tx interrupt delay
rtnetlink: release net refcnt on error in do_setlink()
net/mlx4_core: Limit count field to 24 bits in qp_alloc_res
tg3: fix ring init when there are more TX than RX channels
ipv6: gre: fix wrong skb->protocol in WCCP
sata_fsl: fix error handling of irq_of_parse_and_map
ahci: disable MSI on SAMSUNG 0xa800 SSD
AHCI: Add DeviceIDs for Sunrise Point-LP SATA controller
media: smiapp: Only some selection targets are settable
drm/i915: Unlock panel even when LVDS is disabled
drm/radeon: kernel panic in drm_calc_vbltimestamp_from_scanoutpos with 3.18.0-rc6
i2c: davinci: generate STP always when NACK is received
i2c: omap: fix i207 errata handling
i2c: omap: fix NACK and Arbitration Lost irq handling
xen-netfront: Remove BUGs on paged skb data which crosses a page boundary
mm: fix swapoff hang after page migration and fork
mm: frontswap: invalidate expired data on a dup-store failure
Linux 3.10.62
nfsd: Fix ACL null pointer deref
powerpc/powernv: Honor the generic "no_64bit_msi" flag
bnx2fc: do not add shared skbs to the fcoe_rx_list
nfsd4: fix leak of inode reference on delegation failure
nfsd: Fix slot wake up race in the nfsv4.1 callback code
rt2x00: do not align payload on modern H/W
can: dev: avoid calling kfree_skb() from interrupt context
spi: dw: Fix dynamic speed change.
iser-target: Handle DEVICE_REMOVAL event on network portal listener correctly
target: Don't call TFO->write_pending if data_length == 0
srp-target: Retry when QP creation fails with ENOMEM
Input: xpad - use proper endpoint type
ARM: 8222/1: mvebu: enable strex backoff delay
ARM: 8216/1: xscale: correct auxiliary register in suspend/resume
ALSA: usb-audio: Add ctrl message delay quirk for Marantz/Denon devices
can: esd_usb2: fix memory leak on disconnect
USB: xhci: don't start a halted endpoint before its new dequeue is set
usb-quirks: Add reset-resume quirk for MS Wireless Laser Mouse 6000
usb: serial: ftdi_sio: add PIDs for Matrix Orbital products
USB: serial: cp210x: add IDs for CEL MeshConnect USB Stick
USB: keyspan: fix tty line-status reporting
USB: keyspan: fix overrun-error reporting
USB: ssu100: fix overrun-error reporting
iio: Fix IIO_EVENT_CODE_EXTRACT_DIR bit mask
powerpc/pseries: Fix endiannes issue in RTAS call from xmon
powerpc/pseries: Honor the generic "no_64bit_msi" flag
of/base: Fix PowerPC address parsing hack
ASoC: wm_adsp: Avoid attempt to free buffers that might still be in use
ASoC: sgtl5000: Fix SMALL_POP bit definition
PCI/MSI: Add device flag indicating that 64-bit MSIs don't work
ipx: fix locking regression in ipx_sendmsg and ipx_recvmsg
pptp: fix stack info leak in pptp_getname()
qmi_wwan: Add support for HP lt4112 LTE/HSPA+ Gobi 4G Modem
ieee802154: fix error handling in ieee802154fake_probe()
ipv4: Fix incorrect error code when adding an unreachable route
inetdevice: fixed signed integer overflow
sparc64: Fix constraints on swab helpers.
uprobes, x86: Fix _TIF_UPROBE vs _TIF_NOTIFY_RESUME
x86, mm: Set NX across entire PMD at boot
x86: Require exact match for 'noxsave' command line option
x86_64, traps: Rework bad_iret
x86_64, traps: Stop using IST for #SS
x86_64, traps: Fix the espfix64 #DF fixup and rewrite it in C
MIPS: Loongson: Make platform serial setup always built-in.
MIPS: oprofile: Fix backtrace on 64-bit kernel
Linux 3.10.61
mm: memcg: handle non-error OOM situations more gracefully
mm: memcg: do not trap chargers with full callstack on OOM
mm: memcg: rework and document OOM waiting and wakeup
mm: memcg: enable memcg OOM killer only for user faults
x86: finish user fault error path with fatal signal
arch: mm: pass userspace fault flag to generic fault handler
arch: mm: do not invoke OOM killer on kernel fault OOM
arch: mm: remove obsolete init OOM protection
mm: invoke oom-killer from remaining unconverted page fault handlers
net: sctp: fix skb_over_panic when receiving malformed ASCONF chunks
net: sctp: fix panic on duplicate ASCONF chunks
net: sctp: fix remote memory pressure from excessive queueing
KVM: x86: Don't report guest userspace emulation error to userspace
SCSI: hpsa: fix a race in cmd_free/scsi_done
net/mlx4_en: Fix BlueFlame race
ARM: Correct BUG() assembly to ensure it is endian-agnostic
perf/x86/intel: Use proper dTLB-load-misses event on IvyBridge
mei: bus: fix possible boundaries violation
perf: Handle compat ioctl
MIPS: Fix forgotten preempt_enable() when CPU has inclusive pcaches
dell-wmi: Fix access out of memory
ARM: probes: fix instruction fetch order with <asm/opcodes.h>
br: fix use of ->rx_handler_data in code executed on non-rx_handler path
netfilter: nf_nat: fix oops on netns removal
netfilter: xt_bpf: add mising opaque struct sk_filter definition
netfilter: nf_log: release skbuff on nlmsg put failure
netfilter: nfnetlink_log: fix maximum packet length logged to userspace
netfilter: nf_log: account for size of NLMSG_DONE attribute
ipc: always handle a new value of auto_msgmni
clocksource: Remove "weak" from clocksource_default_clock() declaration
kgdb: Remove "weak" from kgdb_arch_pc() declaration
media: ttusb-dec: buffer overflow in ioctl
NFSv4: Fix races between nfs_remove_bad_delegation() and delegation return
nfs: Fix use of uninitialized variable in nfs_getattr()
NFS: Don't try to reclaim delegation open state if recovery failed
NFSv4: Ensure that we remove NFSv4.0 delegations when state has expired
Input: alps - allow up to 2 invalid packets without resetting device
Input: alps - ignore potential bare packets when device is out of sync
dm raid: ensure superblock's size matches device's logical block size
dm btree: fix a recursion depth bug in btree walking code
block: Fix computation of merged request priority
parisc: Use compat layer for msgctl, shmat, shmctl and semtimedop syscalls
scsi: only re-lock door after EH on devices that were reset
nfs: fix pnfs direct write memory leak
firewire: cdev: prevent kernel stack leaking into ioctl arguments
arm64: __clear_user: handle exceptions on strb
ARM: 8198/1: make kuser helpers depend on MMU
drm/radeon: add missing crtc unlock when setting up the MC
mac80211: fix use-after-free in defragmentation
macvtap: Fix csum_start when VLAN tags are present
iwlwifi: configure the LTR
libceph: do not crash on large auth tickets
xtensa: re-wire umount syscall to sys_oldumount
ALSA: usb-audio: Fix memory leak in FTU quirk
ahci: disable MSI instead of NCQ on Samsung pci-e SSDs on macbooks
ahci: Add Device IDs for Intel Sunrise Point PCH
audit: keep inode pinned
x86, x32, audit: Fix x32's AUDIT_ARCH wrt audit
sparc32: Implement xchg and atomic_xchg using ATOMIC_HASH locks
sparc64: Do irq_{enter,exit}() around generic_smp_call_function*().
sparc64: Fix crashes in schizo_pcierr_intr_other().
sunvdc: don't call VD_OP_GET_VTOC
vio: fix reuse of vio_dring slot
sunvdc: limit each sg segment to a page
sunvdc: compute vdisk geometry from capacity
sunvdc: add cdrom and v1.1 protocol support
net: sctp: fix memory leak in auth key management
net: sctp: fix NULL pointer dereference in af->from_addr_param on malformed packet
gre6: Move the setting of dev->iflink into the ndo_init functions.
ip6_tunnel: Use ip6_tnl_dev_init as the ndo_init function.
Linux 3.10.60
libceph: ceph-msgr workqueue needs a resque worker
Btrfs: fix kfree on list_head in btrfs_lookup_csums_range error cleanup
of: Fix overflow bug in string property parsing functions
sysfs: driver core: Fix glue dir race condition by gdp_mutex
i2c: at91: don't account as iowait
acer-wmi: Add acpi_backlight=video quirk for the Acer KAV80
rbd: Fix error recovery in rbd_obj_read_sync()
drm/radeon: remove invalid pci id
usb: gadget: udc: core: fix kernel oops with soft-connect
usb: gadget: function: acm: make f_acm pass USB20CV Chapter9
usb: dwc3: gadget: fix set_halt() bug with pending transfers
crypto: algif - avoid excessive use of socket buffer in skcipher
mm: Remove false WARN_ON from pagecache_isize_extended()
x86, apic: Handle a bad TSC more gracefully
posix-timers: Fix stack info leak in timer_create()
mac80211: fix typo in starting baserate for rts_cts_rate_idx
PM / Sleep: fix recovery during resuming from hibernation
tty: Fix high cpu load if tty is unreleaseable
quota: Properly return errors from dquot_writeback_dquots()
ext3: Don't check quota format when there are no quota files
nfsd4: fix crash on unknown operation number
cpc925_edac: Report UE events properly
e7xxx_edac: Report CE events properly
i3200_edac: Report CE events properly
i82860_edac: Report CE events properly
scsi: Fix error handling in SCSI_IOCTL_SEND_COMMAND
lib/bitmap.c: fix undefined shift in __bitmap_shift_{left|right}()
cgroup/kmemleak: add kmemleak_free() for cgroup deallocations.
usb: Do not allow usb_alloc_streams on unconfigured devices
USB: opticon: fix non-atomic allocation in write path
usb-storage: handle a skipped data phase
spi: pxa2xx: toggle clocks on suspend if not disabled by runtime PM
spi: pl022: Fix incorrect dma_unmap_sg
usb: dwc3: gadget: Properly initialize LINK TRB
wireless: rt2x00: add new rt2800usb device
USB: option: add Haier CE81B CDMA modem
usb: option: add support for Telit LE910
USB: cdc-acm: only raise DTR on transitions from B0
USB: cdc-acm: add device id for GW Instek AFG-2225
usb: serial: ftdi_sio: add "bricked" FTDI device PID
usb: serial: ftdi_sio: add Awinda Station and Dongle products
USB: serial: cp210x: add Silicon Labs 358x VID and PID
serial: Fix divide-by-zero fault in uart_get_divisor()
staging:iio:ade7758: Remove "raw" from channel name
staging:iio:ade7758: Fix check if channels are enabled in prenable
staging:iio:ade7758: Fix NULL pointer deref when enabling buffer
staging:iio:ad5933: Drop "raw" from channel names
staging:iio:ad5933: Fix NULL pointer deref when enabling buffer
OOM, PM: OOM killed task shouldn't escape PM suspend
freezer: Do not freeze tasks killed by OOM killer
ext4: fix oops when loading block bitmap failed
cpufreq: intel_pstate: Fix setting max_perf_pct in performance policy
ext4: fix overflow when updating superblock backups after resize
ext4: check s_chksum_driver when looking for bg csum presence
ext4: fix reservation overflow in ext4_da_write_begin
ext4: add ext4_iget_normal() which is to be used for dir tree lookups
ext4: grab missed write_count for EXT4_IOC_SWAP_BOOT
ext4: don't check quota format when there are no quota files
ext4: check EA value offset when loading
jbd2: free bh when descriptor block checksum fails
MIPS: tlbex: Properly fix HUGE TLB Refill exception handler
target: Fix APTPL metadata handling for dynamic MappedLUNs
target: Fix queue full status NULL pointer for SCF_TRANSPORT_TASK_SENSE
qla_target: don't delete changed nacls
ARC: Update order of registers in KGDB to match GDB 7.5
ARC: [nsimosci] Allow "headless" models to boot
KVM: x86: Emulator fixes for eip canonical checks on near branches
KVM: x86: Fix wrong masking on relative jump/call
kvm: x86: don't kill guest on unknown exit reason
KVM: x86: Check non-canonical addresses upon WRMSR
KVM: x86: Improve thread safety in pit
KVM: x86: Prevent host from panicking on shared MSR writes.
kvm: fix excessive pages un-pinning in kvm_iommu_map error path.
media: tda7432: Fix setting TDA7432_MUTE bit for TDA7432_RF register
media: ds3000: fix LNB supply voltage on Tevii S480 on initialization
media: em28xx-v4l: give back all active video buffers to the vb2 core properly on streaming stop
media: v4l2-common: fix overflow in v4l_bound_align_image()
drm/nouveau/bios: memset dcb struct to zero before parsing
drm/tilcdc: Fix the error path in tilcdc_load()
drm/ast: Fix HW cursor image
Input: i8042 - quirks for Fujitsu Lifebook A544 and Lifebook AH544
Input: i8042 - add noloop quirk for Asus X750LN
framebuffer: fix border color
modules, lock around setting of MODULE_STATE_UNFORMED
dm log userspace: fix memory leak in dm_ulog_tfr_init failure path
block: fix alignment_offset math that assumes io_min is a power-of-2
drbd: compute the end before rb_insert_augmented()
dm bufio: update last_accessed when relinking a buffer
virtio_pci: fix virtio spec compliance on restore
selinux: fix inode security list corruption
pstore: Fix duplicate {console,ftrace}-efi entries
mfd: rtsx_pcr: Fix MSI enable error handling
mnt: Prevent pivot_root from creating a loop in the mount tree
UBI: add missing kmem_cache_free() in process_pool_aeb error path
random: add and use memzero_explicit() for clearing data
crypto: more robust crypto_memneq
fix misuses of f_count() in ppp and netlink
kill wbuf_queued/wbuf_dwork_lock
ALSA: pcm: Zero-clear reserved fields of PCM status ioctl in compat mode
evm: check xattr value length and type in evm_inode_setxattr()
x86, pageattr: Prevent overflow in slow_virt_to_phys() for X86_PAE
x86_64, entry: Fix out of bounds read on sysenter
x86_64, entry: Filter RFLAGS.NT on entry from userspace
x86, flags: Rename X86_EFLAGS_BIT1 to X86_EFLAGS_FIXED
x86, fpu: shift drop_init_fpu() from save_xstate_sig() to handle_signal()
x86, fpu: __restore_xstate_sig()->math_state_restore() needs preempt_disable()
x86: Reject x32 executables if x32 ABI not supported
vfs: fix data corruption when blocksize < pagesize for mmaped data
UBIFS: fix free log space calculation
UBIFS: fix a race condition
UBIFS: remove mst_mutex
fs: Fix theoretical division by 0 in super_cache_scan().
fs: make cont_expand_zero interruptible
mmc: rtsx_pci_sdmmc: fix incorrect last byte in R2 response
libata-sff: Fix controllers with no ctl port
pata_serverworks: disable 64-KB DMA transfers on Broadcom OSB4 IDE Controller
Revert "percpu: free percpu allocation info for uniprocessor system"
lockd: Try to reconnect if statd has moved
drivers/net: macvtap and tun depend on INET
ipv4: dst_entry leak in ip_send_unicast_reply()
ax88179_178a: fix bonding failure
ipv4: fix nexthop attlen check in fib_nh_match
tracing/syscalls: Ignore numbers outside NR_syscalls' range
Linux 3.10.59
ecryptfs: avoid to access NULL pointer when write metadata in xattr
ARM: at91/PMC: don't forget to write PMC_PCDR register to disable clocks
ALSA: usb-audio: Add support for Steinberg UR22 USB interface
ALSA: emu10k1: Fix deadlock in synth voice lookup
ALSA: pcm: use the same dma mmap codepath both for arm and arm64
arm64: compat: fix compat types affecting struct compat_elf_prpsinfo
spi: dw-mid: terminate ongoing transfers at exit
kernel: add support for gcc 5
fanotify: enable close-on-exec on events' fd when requested in fanotify_init()
mm: clear __GFP_FS when PF_MEMALLOC_NOIO is set
Bluetooth: Fix issue with USB suspend in btusb driver
Bluetooth: Fix HCI H5 corrupted ack value
rt2800: correct BBP1_TX_POWER_CTRL mask
PCI: Generate uppercase hex for modalias interface class
PCI: Increase IBM ipr SAS Crocodile BARs to at least system page size
iwlwifi: Add missing PCI IDs for the 7260 series
NFSv4.1: Fix an NFSv4.1 state renewal regression
NFSv4: fix open/lock state recovery error handling
NFSv4: Fix lock recovery when CREATE_SESSION/SETCLIENTID_CONFIRM fails
lzo: check for length overrun in variable length encoding.
Revert "lzo: properly check for overruns"
Documentation: lzo: document part of the encoding
m68k: Disable/restore interrupts in hwreg_present()/hwreg_write()
Drivers: hv: vmbus: Fix a bug in vmbus_open()
Drivers: hv: vmbus: Cleanup vmbus_establish_gpadl()
Drivers: hv: vmbus: Cleanup vmbus_teardown_gpadl()
Drivers: hv: vmbus: Cleanup vmbus_post_msg()
firmware_class: make sure fw requests contain a name
qla2xxx: Use correct offset to req-q-out for reserve calculation
mptfusion: enable no_write_same for vmware scsi disks
be2iscsi: check ip buffer before copying
regmap: fix NULL pointer dereference in _regmap_write/read
regmap: debugfs: fix possbile NULL pointer dereference
spi: dw-mid: check that DMA was inited before exit
spi: dw-mid: respect 8 bit mode
x86/intel/quark: Switch off CR4.PGE so TLB flush uses CR3 instead
kvm: don't take vcpu mutex for obviously invalid vcpu ioctls
KVM: s390: unintended fallthrough for external call
kvm: x86: fix stale mmio cache bug
fs: Add a missing permission check to do_umount
Btrfs: fix race in WAIT_SYNC ioctl
Btrfs: fix build_backref_tree issue with multiple shared blocks
Btrfs: try not to ENOSPC on log replay
Linux 3.10.58
USB: cp210x: add support for Seluxit USB dongle
USB: serial: cp210x: added Ketra N1 wireless interface support
USB: Add device quirk for ASUS T100 Base Station keyboard
ipv6: reallocate addrconf router for ipv6 address when lo device up
tcp: fixing TLP's FIN recovery
sctp: handle association restarts when the socket is closed.
ip6_gre: fix flowi6_proto value in xmit path
hyperv: Fix a bug in netvsc_start_xmit()
tg3: Allow for recieve of full-size 8021AD frames
tg3: Work around HW/FW limitations with vlan encapsulated frames
l2tp: fix race while getting PMTU on PPP pseudo-wire
openvswitch: fix panic with multiple vlan headers
packet: handle too big packets for PACKET_V3
tcp: fix tcp_release_cb() to dispatch via address family for mtu_reduced()
sit: Fix ipip6_tunnel_lookup device matching criteria
myri10ge: check for DMA mapping errors
Linux 3.10.57
cpufreq: ondemand: Change the calculation of target frequency
cpufreq: Fix wrong time unit conversion
nl80211: clear skb cb before passing to netlink
drbd: fix regression 'out of mem, failed to invoke fence-peer helper'
jiffies: Fix timeval conversion to jiffies
md/raid5: disable 'DISCARD' by default due to safety concerns.
media: vb2: fix VBI/poll regression
mm: numa: Do not mark PTEs pte_numa when splitting huge pages
mm, thp: move invariant bug check out of loop in __split_huge_page_map
ring-buffer: Fix infinite spin in reading buffer
init/Kconfig: Fix HAVE_FUTEX_CMPXCHG to not break up the EXPERT menu
perf: fix perf bug in fork()
udf: Avoid infinite loop when processing indirect ICBs
Linux 3.10.56
vm_is_stack: use for_each_thread() rather then buggy while_each_thread()
oom_kill: add rcu_read_lock() into find_lock_task_mm()
oom_kill: has_intersects_mems_allowed() needs rcu_read_lock()
oom_kill: change oom_kill.c to use for_each_thread()
introduce for_each_thread() to replace the buggy while_each_thread()
kernel/fork.c:copy_process(): unify CLONE_THREAD-or-thread_group_leader code
arm: multi_v7_defconfig: Enable Zynq UART driver
ext2: Fix fs corruption in ext2_get_xip_mem()
serial: 8250_dma: check the result of TX buffer mapping
ARM: 7748/1: oabi: handle faults when loading swi instruction from userspace
netfilter: nf_conntrack: avoid large timeout for mid-stream pickup
PM / sleep: Use valid_state() for platform-dependent sleep states only
PM / sleep: Add state field to pm_states[] entries
ipvs: fix ipv6 hook registration for local replies
ipvs: Maintain all DSCP and ECN bits for ipv6 tun forwarding
ipvs: avoid netns exit crash on ip_vs_conn_drop_conntrack
md/raid1: fix_read_error should act on all non-faulty devices.
media: cx18: fix kernel oops with tda8290 tuner
Fix nasty 32-bit overflow bug in buffer i/o code.
perf kmem: Make it work again on non NUMA machines
perf: Fix a race condition in perf_remove_from_context()
alarmtimer: Lock k_itimer during timer callback
alarmtimer: Do not signal SIGEV_NONE timers
parisc: Only use -mfast-indirect-calls option for 32-bit kernel builds
powerpc/perf: Fix ABIv2 kernel backtraces
sched: Fix unreleased llc_shared_mask bit during CPU hotplug
ocfs2/dlm: do not get resource spinlock if lockres is new
nilfs2: fix data loss with mmap()
fs/notify: don't show f_handle if exportfs_encode_inode_fh failed
fsnotify/fdinfo: use named constants instead of hardcoded values
kcmp: fix standard comparison bug
Revert "mac80211: disable uAPSD if all ACs are under ACM"
usb: dwc3: core: fix ordering for PHY suspend
usb: dwc3: core: fix order of PM runtime calls
usb: host: xhci: fix compliance mode workaround
genhd: fix leftover might_sleep() in blk_free_devt()
lockd: fix rpcbind crash on lockd startup failure
rtlwifi: rtl8192cu: Add new ID
percpu: perform tlb flush after pcpu_map_pages() failure
percpu: fix pcpu_alloc_pages() failure path
percpu: free percpu allocation info for uniprocessor system
ata_piix: Add Device IDs for Intel 9 Series PCH
Input: i8042 - add nomux quirk for Avatar AVIU-145A6
Input: i8042 - add Fujitsu U574 to no_timeout dmi table
Input: atkbd - do not try 'deactivate' keyboard on any LG laptops
Input: elantech - fix detection of touchpad on ASUS s301l
Input: synaptics - add support for ForcePads
Input: serport - add compat handling for SPIOCSTYPE ioctl
dm crypt: fix access beyond the end of allocated space
block: Fix dev_t minor allocation lifetime
workqueue: apply __WQ_ORDERED to create_singlethread_workqueue()
Revert "iwlwifi: dvm: don't enable CTS to self"
SCSI: libiscsi: fix potential buffer overrun in __iscsi_conn_send_pdu
NFC: microread: Potential overflows in microread_target_discovered()
iscsi-target: Fix memory corruption in iscsit_logout_post_handler_diffcid
iscsi-target: avoid NULL pointer in iscsi_copy_param_list failure
Target/iser: Don't put isert_conn inside disconnected handler
Target/iser: Get isert_conn reference once got to connected_handler
iio:inkern: fix overwritten -EPROBE_DEFER in of_iio_channel_get_by_name
iio:magnetometer: bugfix magnetometers gain values
iio: adc: ad_sigma_delta: Fix indio_dev->trig assignment
iio: st_sensors: Fix indio_dev->trig assignment
iio: meter: ade7758: Fix indio_dev->trig assignment
iio: inv_mpu6050: Fix indio_dev->trig assignment
iio: gyro: itg3200: Fix indio_dev->trig assignment
iio:trigger: modify return value for iio_trigger_get
CIFS: Fix SMB2 readdir error handling
CIFS: Fix directory rename error
ASoC: davinci-mcasp: Correct rx format unit configuration
shmem: fix nlink for rename overwrite directory
x86 early_ioremap: Increase FIX_BTMAPS_SLOTS to 8
KVM: x86: handle idiv overflow at kvm_write_tsc
regmap: Fix handling of volatile registers for format_write() chips
ACPICA: Update to GPIO region handler interface.
MIPS: mcount: Adjust stack pointer for static trace in MIPS32
MIPS: ZBOOT: add missing <linux/string.h> include
ARM: 8165/1: alignment: don't break misaligned NEON load/store
ARM: 7897/1: kexec: Use the right ISA for relocate_new_kernel
ARM: 8133/1: use irq_set_affinity with force=false when migrating irqs
ARM: 8128/1: abort: don't clear the exclusive monitors
NFSv4: Fix another bug in the close/open_downgrade code
NFSv4: nfs4_state_manager() vs. nfs_server_remove_lists()
usb:hub set hub->change_bits when over-current happens
usb: dwc3: omap: fix ordering for runtime pm calls
USB: EHCI: unlink QHs even after the controller has stopped
USB: storage: Add quirks for Entrega/Xircom USB to SCSI converters
USB: storage: Add quirk for Ariston Technologies iConnect USB to SCSI adapter
USB: storage: Add quirk for Adaptec USBConnect 2000 USB-to-SCSI Adapter
storage: Add single-LUN quirk for Jaz USB Adapter
usb: hub: take hub->hdev reference when processing from eventlist
xhci: fix oops when xhci resumes from hibernate with hw lpm capable devices
xhci: Fix null pointer dereference if xhci initialization fails
USB: zte_ev: fix removed PIDs
USB: ftdi_sio: add support for NOVITUS Bono E thermal printer
USB: sierra: add 1199:68AA device ID
USB: sierra: avoid CDC class functions on "68A3" devices
USB: zte_ev: remove duplicate Qualcom PID
USB: zte_ev: remove duplicate Gobi PID
Revert "USB: option,zte_ev: move most ZTE CDMA devices to zte_ev"
USB: option: add VIA Telecom CDS7 chipset device id
USB: option: reduce interrupt-urb logging verbosity
USB: serial: fix potential heap buffer overflow
USB: sisusb: add device id for Magic Control USB video
USB: serial: fix potential stack buffer overflow
USB: serial: pl2303: add device id for ztek device
xtensa: fix a6 and a7 handling in fast_syscall_xtensa
xtensa: fix TLBTEMP_BASE_2 region handling in fast_second_level_miss
xtensa: fix access to THREAD_RA/THREAD_SP/THREAD_DS
xtensa: fix address checks in dma_{alloc,free}_coherent
xtensa: replace IOCTL code definitions with constants
drm/radeon: add connector quirk for fujitsu board
drm/vmwgfx: Fix a potential infinite spin waiting for fifo idle
drm/ast: AST2000 cannot be detected correctly
drm/i915: Wait for vblank before enabling the TV encoder
drm/i915: Remove bogus __init annotation from DMI callbacks
HID: logitech-dj: prevent false errors to be shown
HID: magicmouse: sanity check report size in raw_event() callback
HID: picolcd: sanity check report size in raw_event() callback
cfq-iosched: Fix wrong children_weight calculation
ALSA: pcm: fix fifo_size frame calculation
ALSA: hda - Fix invalid pin powermap without jack detection
ALSA: hda - Fix COEF setups for ALC1150 codec
ALSA: core: fix buffer overflow in snd_info_get_line()
arm64: ptrace: fix compat hardware watchpoint reporting
trace: Fix epoll hang when we race with new entries
i2c: at91: Fix a race condition during signal handling in at91_do_twi_xfer.
i2c: at91: add bound checking on SMBus block length bytes
arm64: flush TLS registers during exec
ibmveth: Fix endian issues with rx_no_buffer statistic
ahci: add pcid for Marvel 0x9182 controller
ahci: Add Device IDs for Intel 9 Series PCH
pata_scc: propagate return value of scc_wait_after_reset
drm/i915: read HEAD register back in init_ring_common() to enforce ordering
drm/radeon: load the lm63 driver for an lm64 thermal chip.
drm/ttm: Choose a pool to shrink correctly in ttm_dma_pool_shrink_scan().
drm/ttm: Fix possible division by 0 in ttm_dma_pool_shrink_scan().
drm/tilcdc: fix double kfree
drm/tilcdc: fix release order on exit
drm/tilcdc: panel: fix leak when unloading the module
drm/tilcdc: tfp410: fix dangling sysfs connector node
drm/tilcdc: slave: fix dangling sysfs connector node
drm/tilcdc: panel: fix dangling sysfs connector node
carl9170: fix sending URBs with wrong type when using full-speed
Linux 3.10.55
libceph: gracefully handle large reply messages from the mon
libceph: rename ceph_msg::front_max to front_alloc_len
tpm: Provide a generic means to override the chip returned timeouts
vfs: fix bad hashing of dentries
dcache.c: get rid of pointless macros
IB/srp: Fix deadlock between host removal and multipathd
blkcg: don't call into policy draining if root_blkg is already gone
mtd: nand: omap: Fix 1-bit Hamming code scheme, omap_calculate_ecc()
mtd/ftl: fix the double free of the buffers allocated in build_maps()
CIFS: Fix wrong restart readdir for SMB1
CIFS: Fix wrong filename length for SMB2
CIFS: Fix wrong directory attributes after rename
CIFS: Possible null ptr deref in SMB2_tcon
CIFS: Fix async reading on reconnects
CIFS: Fix STATUS_CANNOT_DELETE error mapping for SMB2
libceph: do not hard code max auth ticket len
libceph: add process_one_ticket() helper
libceph: set last_piece in ceph_msg_data_pages_cursor_init() correctly
md/raid1,raid10: always abort recover on write error.
xfs: don't zero partial page cache pages during O_DIRECT writes
xfs: don't zero partial page cache pages during O_DIRECT writes
xfs: don't dirty buffers beyond EOF
xfs: quotacheck leaves dquot buffers without verifiers
RDMA/iwcm: Use a default listen backlog if needed
md/raid10: Fix memory leak when raid10 reshape completes.
md/raid10: fix memory leak when reshaping a RAID10.
md/raid6: avoid data corruption during recovery of double-degraded RAID6
Bluetooth: Avoid use of session socket after the session gets freed
Bluetooth: never linger on process exit
mnt: Add tests for unprivileged remount cases that have found to be faulty
mnt: Change the default remount atime from relatime to the existing value
mnt: Correct permission checks in do_remount
mnt: Move the test for MNT_LOCK_READONLY from change_mount_flags into do_remount
mnt: Only change user settable mount flags in remount
ring-buffer: Up rb_iter_peek() loop count to 3
ring-buffer: Always reset iterator to reader page
ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lock
ACPI: Run fixed event device notifications in process context
ACPICA: Utilities: Fix memory leak in acpi_ut_copy_iobject_to_iobject
bfa: Fix undefined bit shift on big-endian architectures with 32-bit DMA address
ASoC: pxa-ssp: drop SNDRV_PCM_FMTBIT_S24_LE
ASoC: max98090: Fix missing free_irq
ASoC: samsung: Correct I2S DAI suspend/resume ops
ASoC: wm_adsp: Add missing MODULE_LICENSE
ASoC: pcm: fix dpcm_path_put in dpcm runtime update
openrisc: Rework signal handling
MIPS: Fix accessing to per-cpu data when flushing the cache
MIPS: OCTEON: make get_system_type() thread-safe
MIPS: asm: thread_info: Add _TIF_SECCOMP flag
MIPS: Cleanup flags in syscall flags handlers.
MIPS: asm/reg.h: Make 32- and 64-bit definitions available at the same time
MIPS: Remove BUG_ON(!is_fpu_owner()) in do_ade()
MIPS: tlbex: Fix a missing statement for HUGETLB
MIPS: Prevent user from setting FCSR cause bits
MIPS: GIC: Prevent array overrun
drivers: scsi: storvsc: Correctly handle TEST_UNIT_READY failure
Drivers: scsi: storvsc: Implement a eh_timed_out handler
powerpc/pseries: Failure on removing device node
powerpc/mm: Use read barrier when creating real_pte
powerpc/mm/numa: Fix break placement
regulator: arizona-ldo1: remove bypass functionality
mfd: omap-usb-host: Fix improper mask use.
kernel/smp.c:on_each_cpu_cond(): fix warning in fallback path
CAPABILITIES: remove undefined caps from all processes
tpm: missing tpm_chip_put in tpm_get_random()
firmware: Do not use WARN_ON(!spin_is_locked())
spi: omap2-mcspi: Configure hardware when slave driver changes mode
spi: orion: fix incorrect handling of cell-index DT property
iommu/amd: Fix cleanup_domain for mass device removal
media: media-device: Remove duplicated memset() in media_enum_entities()
media: au0828: Only alt setting logic when needed
media: xc4000: Fix get_frequency()
media: xc5000: Fix get_frequency()
Linux 3.10.54
USB: fix build error with CONFIG_PM_RUNTIME disabled
NFSv4: Fix problems with close in the presence of a delegation
NFSv3: Fix another acl regression
svcrdma: Select NFSv4.1 backchannel transport based on forward channel
NFSD: Decrease nfsd_users in nfsd_startup_generic fail
usb: hub: Prevent hub autosuspend if usbcore.autosuspend is -1
USB: whiteheat: Added bounds checking for bulk command response
USB: ftdi_sio: Added PID for new ekey device
USB: ftdi_sio: add Basic Micro ATOM Nano USB2Serial PID
ARM: OMAP2+: hwmod: Rearm wake-up interrupts for DT when MUSB is idled
usb: xhci: amd chipset also needs short TX quirk
xhci: Treat not finding the event_seg on COMP_STOP the same as COMP_STOP_INVAL
Staging: speakup: Update __speakup_paste_selection() tty (ab)usage to match vt
jbd2: fix infinite loop when recovering corrupt journal blocks
mei: nfc: fix memory leak in error path
mei: reset client state on queued connect request
Btrfs: fix csum tree corruption, duplicate and outdated checksums
hpsa: fix bad -ENOMEM return value in hpsa_big_passthru_ioctl
x86/efi: Enforce CONFIG_RELOCATABLE for EFI boot stub
x86_64/vsyscall: Fix warn_bad_vsyscall log output
x86: don't exclude low BIOS area when allocating address space for non-PCI cards
drm/radeon: add additional SI pci ids
ext4: fix BUG_ON in mb_free_blocks()
kvm: iommu: fix the third parameter of kvm_iommu_put_pages (CVE-2014-3601)
Revert "KVM: x86: Increase the number of fixed MTRR regs to 10"
KVM: nVMX: fix "acknowledge interrupt on exit" when APICv is in use
KVM: x86: always exit on EOIs for interrupts listed in the IOAPIC redir table
KVM: x86: Inter-privilege level ret emulation is not implemeneted
crypto: ux500 - make interrupt mode plausible
serial: core: Preserve termios c_cflag for console resume
ext4: fix ext4_discard_allocated_blocks() if we can't allocate the pa struct
drivers/i2c/busses: use correct type for dma_map/unmap
hwmon: (dme1737) Prevent overflow problem when writing large limits
hwmon: (ads1015) Fix out-of-bounds array access
hwmon: (lm85) Fix various errors on attribute writes
hwmon: (ads1015) Fix off-by-one for valid channel index checking
hwmon: (gpio-fan) Prevent overflow problem when writing large limits
hwmon: (lm78) Fix overflow problems seen when writing large temperature limits
hwmon: (sis5595) Prevent overflow problem when writing large limits
drm: omapdrm: fix compiler errors
ARM: OMAP3: Fix choice of omap3_restore_es function in OMAP34XX rev3.1.2 case.
mei: start disconnect request timer consistently
ALSA: hda/realtek - Avoid setting wrong COEF on ALC269 & co
ALSA: hda/ca0132 - Don't try loading firmware at resume when already failed
ALSA: virtuoso: add Xonar Essence STX II support
ALSA: hda - fix an external mic jack problem on a HP machine
USB: Fix persist resume of some SS USB devices
USB: ehci-pci: USB host controller support for Intel Quark X1000
USB: serial: ftdi_sio: Add support for new Xsens devices
USB: serial: ftdi_sio: Annotate the current Xsens PID assignments
USB: OHCI: don't lose track of EDs when a controller dies
isofs: Fix unbounded recursion when processing relocated directories
HID: fix a couple of off-by-ones
HID: logitech: perform bounds checking on device_id early enough
stable_kernel_rules: Add pointer to netdev-FAQ for network patches
Linux 3.10.53
arch/sparc/math-emu/math_32.c: drop stray break operator
sparc64: ldc_connect() should not return EINVAL when handshake is in progress.
sunsab: Fix detection of BREAK on sunsab serial console
bbc-i2c: Fix BBC I2C envctrl on SunBlade 2000
sparc64: Guard against flushing openfirmware mappings.
sparc64: Do not insert non-valid PTEs into the TSB hash table.
sparc64: Add membar to Niagara2 memcpy code.
sparc64: Fix huge TSB mapping on pre-UltraSPARC-III cpus.
sparc64: Don't bark so loudly about 32-bit tasks generating 64-bit fault addresses.
sparc64: Fix top-level fault handling bugs.
sparc64: Handle 32-bit tasks properly in compute_effective_address().
sparc64: Make itc_sync_lock raw
sparc64: Fix argument sign extension for compat_sys_futex().
sctp: fix possible seqlock seadlock in sctp_packet_transmit()
iovec: make sure the caller actually wants anything in memcpy_fromiovecend
net: Correctly set segment mac_len in skb_segment().
macvlan: Initialize vlan_features to turn on offload support.
net: sctp: inherit auth_capable on INIT collisions
tcp: Fix integer-overflow in TCP vegas
tcp: Fix integer-overflows in TCP veno
net: sendmsg: fix NULL pointer dereference
ip: make IP identifiers less predictable
inetpeer: get rid of ip_id_count
bnx2x: fix crash during TSO tunneling
Linux 3.10.52
x86/espfix/xen: Fix allocation of pages for paravirt page tables
lib/btree.c: fix leak of whole btree nodes
net/l2tp: don't fall back on UDP [get|set]sockopt
net: mvneta: replace Tx timer with a real interrupt
net: mvneta: add missing bit descriptions for interrupt masks and causes
net: mvneta: do not schedule in mvneta_tx_timeout
net: mvneta: use per_cpu stats to fix an SMP lock up
net: mvneta: increase the 64-bit rx/tx stats out of the hot path
Revert "mac80211: move "bufferable MMPDU" check to fix AP mode scan"
staging: vt6655: Fix Warning on boot handle_irq_event_percpu.
x86_64/entry/xen: Do not invoke espfix64 on Xen
x86, espfix: Make it possible to disable 16-bit support
x86, espfix: Make espfix64 a Kconfig option, fix UML
x86, espfix: Fix broken header guard
x86, espfix: Move espfix definitions into a separate header file
x86-64, espfix: Don't leak bits 31:16 of %esp returning to 16-bit stack
Revert "x86-64, modify_ldt: Make support for 16-bit segments a runtime option"
timer: Fix lock inversion between hrtimer_bases.lock and scheduler locks
printk: rename printk_sched to printk_deferred
iio: buffer: Fix demux table creation
staging: vt6655: Fix disassociated messages every 10 seconds
mm, thp: do not allow thp faults to avoid cpuset restrictions
scsi: handle flush errors properly
rapidio/tsi721_dma: fix failure to obtain transaction descriptor
cfg80211: fix mic_failure tracing
ARM: 8115/1: LPAE: reduce damage caused by idmap to virtual memory layout
crypto: af_alg - properly label AF_ALG socket
Linux 3.10.51
core, nfqueue, openvswitch: Orphan frags in skb_zerocopy and handle errors
x86/efi: Include a .bss section within the PE/COFF headers
s390/ptrace: fix PSW mask check
Fix gcc-4.9.0 miscompilation of load_balance() in scheduler
mm: hugetlb: fix copy_hugetlb_page_range()
x86_32, entry: Store badsys error code in %eax
hwmon: (smsc47m192) Fix temperature limit and vrm write operations
parisc: Remove SA_RESTORER define
coredump: fix the setting of PF_DUMPCORE
Input: fix defuzzing logic
slab_common: fix the check for duplicate slab names
slab_common: Do not check for duplicate slab names
tracing: Fix wraparound problems in "uptime" trace clock
blkcg: don't call into policy draining if root_blkg is already gone
ahci: add support for the Promise FastTrak TX8660 SATA HBA (ahci mode)
libata: introduce ata_host->n_tags to avoid oops on SAS controllers
libata: support the ata host which implements a queue depth less than 32
block: don't assume last put of shared tags is for the host
block: provide compat ioctl for BLKZEROOUT
media: tda10071: force modulation to QPSK on DVB-S
media: hdpvr: fix two audio bugs
Linux 3.10.50
ARC: Implement ptrace(PTRACE_GET_THREAD_AREA)
sched: Fix possible divide by zero in avg_atom() calculation
locking/mutex: Disable optimistic spinning on some architectures
PM / sleep: Fix request_firmware() error at resume
dm cache metadata: do not allow the data block size to change
dm thin metadata: do not allow the data block size to change
alarmtimer: Fix bug where relative alarm timers were treated as absolute
drm/radeon: avoid leaking edid data
drm/qxl: return IRQ_NONE if it was not our irq
drm/radeon: set default bl level to something reasonable
irqchip: gic: Fix core ID calculation when topology is read from DT
irqchip: gic: Add support for cortex a7 compatible string
ring-buffer: Fix polling on trace_pipe
mwifiex: fix Tx timeout issue
perf/x86/intel: ignore CondChgd bit to avoid false NMI handling
ipv4: fix buffer overflow in ip_options_compile()
dns_resolver: Null-terminate the right string
dns_resolver: assure that dns_query() result is null-terminated
sunvnet: clean up objects created in vnet_new() on vnet_exit()
net: pppoe: use correct channel MTU when using Multilink PPP
net: sctp: fix information leaks in ulpevent layer
tipc: clear 'next'-pointer of message fragments before reassembly
be2net: set EQ DB clear-intr bit in be_open()
netlink: Fix handling of error from netlink_dump().
net: mvneta: Fix big endian issue in mvneta_txq_desc_csum()
net: mvneta: fix operation in 10 Mbit/s mode
appletalk: Fix socket referencing in skb
tcp: fix false undo corner cases
igmp: fix the problem when mc leave group
net: qmi_wwan: add two Sierra Wireless/Netgear devices
net: qmi_wwan: Add ID for Telewell TW-LTE 4G v2
ipv4: icmp: Fix pMTU handling for rare case
tcp: Fix divide by zero when pushing during tcp-repair
bnx2x: fix possible panic under memory stress
net: fix sparse warning in sk_dst_set()
ipv4: irq safe sk_dst_[re]set() and ipv4_sk_update_pmtu() fix
ipv4: fix dst race in sk_dst_get()
8021q: fix a potential memory leak
net: sctp: check proc_dointvec result in proc_sctp_do_auth
tcp: fix tcp_match_skb_to_sack() for unaligned SACK at end of an skb
ip_tunnel: fix ip_tunnel_lookup
shmem: fix splicing from a hole while it's punched
shmem: fix faulting into a hole, not taking i_mutex
shmem: fix faulting into a hole while it's punched
iwlwifi: dvm: don't enable CTS to self
igb: do a reset on SR-IOV re-init if device is down
hwmon: (adt7470) Fix writes to temperature limit registers
hwmon: (da9052) Don't use dash in the name attribute
hwmon: (da9055) Don't use dash in the name attribute
tracing: Add ftrace_trace_stack into __trace_puts/__trace_bputs
tracing: Fix graph tracer with stack tracer on other archs
fuse: handle large user and group ID
Bluetooth: Ignore H5 non-link packets in non-active state
Drivers: hv: util: Fix a bug in the KVP code
media: gspca_pac7302: Add new usb-id for Genius i-Look 317
usb: Check if port status is equal to RxDetect
Signed-off-by: Ian Maund <imaund@codeaurora.org>
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Srivatsa Vaddagiri
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bbef4c5e1b |
sched: Consolidate hmp stats into their own struct
Key hmp stats (nr_big_tasks, nr_small_tasks and cumulative_runnable_average) are currently maintained per-cpu in 'struct rq'. Merge those stats in their own structure (struct hmp_sched_stats) and modify impacted functions to deal with the newly introduced structure. This cleanup is required for a subsequent patch which fixes various issues with use of CFS_BANDWIDTH feature in HMP scheduler. Change-Id: Ieffc10a3b82a102f561331bc385d042c15a33998 Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org> |
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Olav Haugan
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2c320f2ffa |
sched: Add temperature to cpu_load trace point
Add the current CPU temperature to the sched_cpu_load trace point. This will allow us to track the CPU temperature. CRs-Fixed: 764788 Change-Id: Ib2e3559bbbe3fe07a6b7c8115db606828bc36254 Signed-off-by: Olav Haugan <ohaugan@codeaurora.org> |
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Steve Muckle
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00acd0448b |
sched: trace: extend sched_cpu_load to print irqload
The irqload is used in determining whether CPUs are mostly idle so it is useful to know this value while viewing scheduler traces. Change-Id: Icbb74fc1285be878f254ae54886bdb161b14a270 Signed-off-by: Steve Muckle <smuckle@codeaurora.org> |
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Steve Muckle
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51f0d7663b |
sched: avoid CPUs with high irq activity
CPUs with significant IRQ activity will not be able to serve tasks quickly. Avoid them if possible by disqualifying such CPUs from being recognized as mostly idle. Change-Id: I2c09272a4f259f0283b272455147d288fce11982 Signed-off-by: Steve Muckle <smuckle@codeaurora.org> |
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Linux Build Service Account
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fea8806a70 | Merge "sched: Fix inaccurate accounting for real-time task" | |
Syed Rameez Mustafa
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fce95c9a12 |
sched: Make RT tasks eligible for boost
During sched boost RT tasks currently end up going to the lowest power cluster. This can be a performance bottleneck especially if the frequency and IPC differences between clusters are high. Furthermore, when RT tasks go over to the little cluster during boost, the load balancer keeps attempting to pull work over to the big cluster. This results in pre-emption of the executing RT task causing more delays. Finally, containing more work on a single cluster during boost might help save some power if the little cluster can then enter deeper low power modes. Change-Id: I177b2e81be5657c23e7ac43889472561ce9993a9 Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org> |
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Srivatsa Vaddagiri
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8fd5aa3bf2 |
sched: Fix inaccurate accounting for real-time task
It is possible that rq->clock_task was not updated in put_prev_task() in which case we can potentially overcharge a real-time task for time it did not run. This is because clock_task could be stale and not represent the exact time real-time task started running. Fix this by forcing update of rq->clock_task when real-time task starts running. Change-Id: I8320bb4e47924368583127b950d987925e8e6a6c Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org> |
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John Stultz
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3984bb13c8 |
printk: rename printk_sched to printk_deferred
commit aac74dc495456412c4130a1167ce4beb6c1f0b38 upstream. After learning we'll need some sort of deferred printk functionality in the timekeeping core, Peter suggested we rename the printk_sched function so it can be reused by needed subsystems. This only changes the function name. No logic changes. Signed-off-by: John Stultz <john.stultz@linaro.org> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Cc: Jan Kara <jack@suse.cz> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Jiri Bohac <jbohac@suse.cz> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.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> |
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Steve Muckle
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1aa9b6992a |
sched: fixes for compilation without CONFIG_SCHED_HMP
These fixes are necessary to compile without CONFIG_SCHED_HMP enabled. Change-Id: Iabbde3c22a81288242ed3a44fdfdb2a16db8b072 Signed-off-by: Steve Muckle <smuckle@codeaurora.org> |
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Srivatsa Vaddagiri
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fefafa08b7 |
sched: remove sysctl control for HMP and power-aware task placement
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> |
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Srivatsa Vaddagiri
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87df0beb43 |
sched: support legacy mode better
It should be possible to bypass all HMP scheduler changes at runtime by setting sysctl_sched_enable_hmp_task_placement and sysctl_sched_enable_power_aware to 0. Fix various code paths to honor this requirement. Change-Id: I74254e68582b3f9f1b84661baf7dae14f981c025 Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org> |
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Syed Rameez Mustafa
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5349ec0ee8 |
sched/rt: Introduce power aware scheduling for real time tasks
Real Time task scheduling has historically been geared towards performance with a significant attempt to keep higher priority tasks on the same CPU. This is not optimal for power since the task CPU may not be the most power efficient CPU. Also task movement via select_lowest_rq() gives CPU priority the primary consideration before looking at CPU topologies to find a CPU closest to the task CPU in terms of topology. This again is not optimal for power since the closest CPU may be significantly worse for power than CPUs further away. This patch removes any bias for the task CPU. When the lowest priority CPUs in the system are found we give no consideration to the CPU topology. Instead we find the lowest power CPU within local_cpu_mask. This takes care of select_task_rq_rt() and push_task(). The pull model remains unaffected since we have no room for power optimization there. Change-Id: I4162ebe2f74be14240e62476f231f9e4a18bd9e8 Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org> Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org> |
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Matt Wagantall
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55896a97a2 |
sched/rt: Add Kconfig option to enable panicking for RT throttling
This may be useful for detecting and debugging RT throttling issues. Change-Id: I5807a897d11997d76421c1fcaa2918aad988c6c9 Signed-off-by: Matt Wagantall <mattw@codeaurora.org> |
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Matt Wagantall
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2cf27b65b9 |
sched/rt: print RT tasks when RT throttling is activated
Existing debug prints do not provide any clues about which tasks may have triggered RT throttling. Print the names and PIDs of all tasks on the throttled rt_rq to help narrow down the source of the problem. Change-Id: I180534c8a647254ed38e89d0c981a8f8bccd741c Signed-off-by: Matt Wagantall <mattw@codeaurora.org> |
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Neil Zhang
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22c2abbe55 |
sched: Remove redundant update_runtime notifier
migration_call() will do all the things that update_runtime() does. So let's remove it. Furthermore, there is potential risk that the current code will catch BUG_ON at line 689 of rt.c when do cpu hotplug while there are realtime threads running because of enabling runtime twice while the rt_runtime may already changed. Change-Id: If2d953316d93c6b7e32f94bd49f2c10e64de6ed8 Signed-off-by: Neil Zhang <zhangwm@marvell.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1365685499-26515-1-git-send-email-zhangwm@marvell.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Git-commit: c5405a495e88d93cf9b4f4cc91507c7f4afcb901 Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git Signed-off-by: Matt Wagantall <mattw@codeaurora.org> |
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Kirill Tkhai
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42e7b42b1c |
sched/rt: Fix rq's cpupri leak while enqueue/dequeue child RT entities
commit 757dfcaa41844595964f1220f1d33182dae49976 upstream. This patch touches the RT group scheduling case. Functions inc_rt_prio_smp() and dec_rt_prio_smp() change (global) rq's priority, while rt_rq passed to them may be not the top-level rt_rq. This is wrong, because changing of priority on a child level does not guarantee that the priority is the highest all over the rq. So, this leak makes RT balancing unusable. The short example: the task having the highest priority among all rq's RT tasks (no one other task has the same priority) are waking on a throttle rt_rq. The rq's cpupri is set to the task's priority equivalent, but real rq->rt.highest_prio.curr is less. The patch below fixes the problem. Signed-off-by: Kirill Tkhai <tkhai@yandex.ru> Signed-off-by: Peter Zijlstra <peterz@infradead.org> CC: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/49231385567953@web4m.yandex.ru Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Linus Torvalds
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d652e1eb8e |
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler changes from Ingo Molnar:
"Main changes:
- scheduler side full-dynticks (user-space execution is undisturbed
and receives no timer IRQs) preparation changes that convert the
cputime accounting code to be full-dynticks ready, from Frederic
Weisbecker.
- Initial sched.h split-up changes, by Clark Williams
- select_idle_sibling() performance improvement by Mike Galbraith:
" 1 tbench pair (worst case) in a 10 core + SMT package:
pre 15.22 MB/sec 1 procs
post 252.01 MB/sec 1 procs "
- sched_rr_get_interval() ABI fix/change. We think this detail is not
used by apps (so it's not an ABI in practice), but lets keep it
under observation.
- misc RT scheduling cleanups, optimizations"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
sched/rt: Add <linux/sched/rt.h> header to <linux/init_task.h>
cputime: Remove irqsave from seqlock readers
sched, powerpc: Fix sched.h split-up build failure
cputime: Restore CPU_ACCOUNTING config defaults for PPC64
sched/rt: Move rt specific bits into new header file
sched/rt: Add a tuning knob to allow changing SCHED_RR timeslice
sched: Move sched.h sysctl bits into separate header
sched: Fix signedness bug in yield_to()
sched: Fix select_idle_sibling() bouncing cow syndrome
sched/rt: Further simplify pick_rt_task()
sched/rt: Do not account zero delta_exec in update_curr_rt()
cputime: Safely read cputime of full dynticks CPUs
kvm: Prepare to add generic guest entry/exit callbacks
cputime: Use accessors to read task cputime stats
cputime: Allow dynamic switch between tick/virtual based cputime accounting
cputime: Generic on-demand virtual cputime accounting
cputime: Move default nsecs_to_cputime() to jiffies based cputime file
cputime: Librarize per nsecs resolution cputime definitions
cputime: Avoid multiplication overflow on utime scaling
context_tracking: Export context state for generic vtime
...
Fix up conflict in kernel/context_tracking.c due to comment additions.
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Clark Williams
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ce0dbbbb30 |
sched/rt: Add a tuning knob to allow changing SCHED_RR timeslice
Add a /proc/sys/kernel scheduler knob named sched_rr_timeslice_ms that allows global changing of the SCHED_RR timeslice value. User visable value is in milliseconds but is stored as jiffies. Setting to 0 (zero) resets to the default (currently 100ms). Signed-off-by: Clark Williams <williams@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20130207094704.13751796@riff.lan Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Kirill Tkhai
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60334caf37 |
sched/rt: Further simplify pick_rt_task()
Function next_prio() has been removed and pull_rt_task() is the only user of pick_next_highest_task_rt() at the moment. pull_rt_task is not interested in p->nr_cpus_allowed, its only interest is the fact that cpu is allowed to execute p. If nr_cpus_allowed == 1, cpu != task_cpu(p) and cpu is allowed then it means that task p is in the middle of the migration techniques; the task waits until it is moved by migration thread. So, lets pull it earlier. Signed-off-by: Kirill V Tkhai <tkhai@yandex.ru> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> CC: linux-rt-users <linux-rt-users@vger.kernel.org> Link: http://lkml.kernel.org/r/70871359644177@web16d.yandex.ru Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Kirill Tkhai
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fc79e240be |
sched/rt: Do not account zero delta_exec in update_curr_rt()
There are several places of consecutive calls of dequeue_task_rt() and put_prev_task_rt() in the scheduler. For example, function rt_mutex_setprio() does it. The both calls lead to update_curr_rt(), the second of it receives zeroed delta_exec. The only effective action in this case is call of sched_rt_avg_update(), which can change rq->age_stamp and rq->rt_avg. But it is possible in case of ""floating"" rq->clock. This fact is not reasonable to be accounted. Another actions do nothing. Signed-off-by: Kirill V Tkhai <tkhai@yandex.ru> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> CC: linux-rt-users <linux-rt-users@vger.kernel.org> Link: http://lkml.kernel.org/r/931541359550236@web1g.yandex.ru Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ying Xue
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57d2aa00dc |
sched/rt: Avoid updating RT entry timeout twice within one tick period
The issue below was found in 2.6.34-rt rather than mainline rt kernel, but the issue still exists upstream as well. So please let me describe how it was noticed on 2.6.34-rt: On this version, each softirq has its own thread, it means there is at least one RT FIFO task per cpu. The priority of these tasks is set to 49 by default. If user launches an RT FIFO task with priority lower than 49 of softirq RT tasks, it's possible there are two RT FIFO tasks enqueued one cpu runqueue at one moment. By current strategy of balancing RT tasks, when it comes to RT tasks, we really need to put them off to a CPU that they can run on as soon as possible. Even if it means a bit of cache line flushing, we want RT tasks to be run with the least latency. When the user RT FIFO task which just launched before is running, the sched timer tick of the current cpu happens. In this tick period, the timeout value of the user RT task will be updated once. Subsequently, we try to wake up one softirq RT task on its local cpu. As the priority of current user RT task is lower than the softirq RT task, the current task will be preempted by the higher priority softirq RT task. Before preemption, we check to see if current can readily move to a different cpu. If so, we will reschedule to allow the RT push logic to try to move current somewhere else. Whenever the woken softirq RT task runs, it first tries to migrate the user FIFO RT task over to a cpu that is running a task of lesser priority. If migration is done, it will send a reschedule request to the found cpu by IPI interrupt. Once the target cpu responds the IPI interrupt, it will pick the migrated user RT task to preempt its current task. When the user RT task is running on the new cpu, the sched timer tick of the cpu fires. So it will tick the user RT task again. This also means the RT task timeout value will be updated again. As the migration may be done in one tick period, it means the user RT task timeout value will be updated twice within one tick. If we set a limit on the amount of cpu time for the user RT task by setrlimit(RLIMIT_RTTIME), the SIGXCPU signal should be posted upon reaching the soft limit. But exactly when the SIGXCPU signal should be sent depends on the RT task timeout value. In fact the timeout mechanism of sending the SIGXCPU signal assumes the RT task timeout is increased once every tick. However, currently the timeout value may be added twice per tick. So it results in the SIGXCPU signal being sent earlier than expected. To solve this issue, we prevent the timeout value from increasing twice within one tick time by remembering the jiffies value of last updating the timeout. As long as the RT task's jiffies is different with the global jiffies value, we allow its timeout to be updated. Signed-off-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Fan Du <fan.du@windriver.com> Reviewed-by: Yong Zhang <yong.zhang0@gmail.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: <peterz@infradead.org> Link: http://lkml.kernel.org/r/1342508623-2887-1-git-send-email-ying.xue@windriver.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Shawn Bohrer
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aa7f67304d |
sched/rt: Use root_domain of rt_rq not current processor
When the system has multiple domains do_sched_rt_period_timer() can run on any CPU and may iterate over all rt_rq in cpu_online_mask. This means when balance_runtime() is run for a given rt_rq that rt_rq may be in a different rd than the current processor. Thus if we use smp_processor_id() to get rd in do_balance_runtime() we may borrow runtime from a rt_rq that is not part of our rd. This changes do_balance_runtime to get the rd from the passed in rt_rq ensuring that we borrow runtime only from the correct rd for the given rt_rq. This fixes a BUG at kernel/sched/rt.c:687! in __disable_runtime when we try reclaim runtime lent to other rt_rq but runtime has been lent to a rt_rq in another rd. Signed-off-by: Shawn Bohrer <sbohrer@rgmadvisors.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Mike Galbraith <bitbucket@online.de> Cc: peterz@infradead.org Cc: <stable@kernel.org> Link: http://lkml.kernel.org/r/1358186131-29494-1-git-send-email-sbohrer@rgmadvisors.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Kirill Tkhai
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1158ddb554 |
sched/rt: Add reschedule check to switched_from_rt()
Reschedule rq->curr if the first RT task has just been pulled to the rq. Signed-off-by: Kirill V Tkhai <tkhai@yandex.ru> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tkhai Kirill <tkhai@yandex.ru> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/118761353614535@web28f.yandex.ru Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Peter Zijlstra
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f3e9478674 |
sched: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW
Now that the last architecture to use this has stopped doing so (ARM, thanks Catalin!) we can remove this complexity from the scheduler core. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Link: http://lkml.kernel.org/n/tip-g9p2a1w81xxbrze25v9zpzbf@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Peter Boonstoppel
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a4c96ae319 |
sched: Unthrottle rt runqueues in __disable_runtime()
migrate_tasks() uses _pick_next_task_rt() to get tasks from the real-time runqueues to be migrated. When rt_rq is throttled _pick_next_task_rt() won't return anything, in which case migrate_tasks() can't move all threads over and gets stuck in an infinite loop. Instead unthrottle rt runqueues before migrating tasks. Additionally: move unthrottle_offline_cfs_rqs() to rq_offline_fair() Signed-off-by: Peter Boonstoppel <pboonstoppel@nvidia.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Turner <pjt@google.com> Link: http://lkml.kernel.org/r/5FBF8E85CA34454794F0F7ECBA79798F379D3648B7@HQMAIL04.nvidia.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Mike Galbraith
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e221d028bb |
sched,rt: fix isolated CPUs leaving root_task_group indefinitely throttled
Root task group bandwidth replenishment must service all CPUs, regardless of where the timer was last started, and regardless of the isolation mechanism, lest 'Quoth the Raven, "Nevermore"' become rt scheduling policy. Signed-off-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1344326558.6968.25.camel@marge.simpson.net Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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Peter Zijlstra
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7f1b43936f |
sched/rt: Fix lockdep annotation within find_lock_lowest_rq()
Roland Dreier reported spurious, hard to trigger lockdep warnings within the scheduler - without any real lockup. This bit gives us the right clue: > [89945.640512] [<ffffffff8103fa1a>] double_lock_balance+0x5a/0x90 > [89945.640568] [<ffffffff8104c546>] push_rt_task+0xc6/0x290 if you look at that code you'll find the double_lock_balance() in question is the one in find_lock_lowest_rq() [yay for inlining]. Now find_lock_lowest_rq() has a bug.. it fails to use double_unlock_balance() in one exit path, if this results in a retry in push_rt_task() we'll call double_lock_balance() again, at which point we'll run into said lockdep confusion. Reported-by: Roland Dreier <roland@kernel.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1337282386.4281.77.camel@twins Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Colin Cross
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454c79999f |
sched/rt: Fix SCHED_RR across cgroups
task_tick_rt() has an optimization to only reschedule SCHED_RR tasks if they were the only element on their rq. However, with cgroups a SCHED_RR task could be the only element on its per-cgroup rq but still be competing with other SCHED_RR tasks in its parent's cgroup. In this case, the SCHED_RR task in the child cgroup would never yield at the end of its timeslice. If the child cgroup rt_runtime_us was the same as the parent cgroup rt_runtime_us, the task in the parent cgroup would starve completely. Modify task_tick_rt() to check that the task is the only task on its rq, and that the each of the scheduling entities of its ancestors is also the only entity on its rq. Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1337229266-15798-1-git-send-email-ccross@android.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Peter Zijlstra
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29baa7478b |
sched: Move nr_cpus_allowed out of 'struct sched_rt_entity'
Since nr_cpus_allowed is used outside of sched/rt.c and wants to be used outside of there more, move it to a more natural site. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-kr61f02y9brwzkh6x53pdptm@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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4cbb62148c |
Merge branch 'tip/sched/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into sched/core
Pull a scheduler optimization commit from Steven Rostedt. Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Kirill Tkhai
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8d3d5ada56 |
sched_rt: Avoid unnecessary dequeue and enqueue of pushable tasks in set_cpus_allowed_rt()
Migration status depends on a difference of weight from 0 and 1. If weight > 1 (<= 1) and old weight <= 1 (> 1) then task becomes pushable (or not pushable). We are not insterested in its exact values, is it 3 or 4, for example. Now if we are changing affinity from a set of 3 cpus to a set of 4, the- task will be dequeued and enqueued sequentially without important difference in comparison with initial state. The only difference is in internal representation of plist queue of pushable tasks and the fact that the task may won't be the first in a sequence of the same priority tasks. But it seems to me it gives nothing. Link: http://lkml.kernel.org/r/273741334120764@web83.yandex.ru Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Tkhai Kirill <tkhai@yandex.ru> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
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Michael J Wang
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1b028abc77 |
sched/rt: Improve pick_next_highest_task_rt()
Avoid extra work by continuing on to the next rt_rq if the highest prio task in current rt_rq is the same priority as our candidate task. More detailed explanation: if next is not NULL, then we have found a candidate task, and its priority is next->prio. Now we are looking for an even higher priority task in the other rt_rq's. idx is the highest priority in the current candidate rt_rq. In the current 3.3 code, if idx is equal to next->prio, we would start scanning the tasks in that rt_rq and replace the current candidate task with a task from that rt_rq. But the new task would only have a priority that is equal to our previous candidate task, so we have not advanced our goal of finding a higher prio task. So we should avoid the extra work by continuing on to the next rt_rq if idx is equal to next->prio. Signed-off-by: Michael J Wang <mjwang@broadcom.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Reviewed-by: Yong Zhang <yong.zhang0@gmail.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/2EF88150C0EF2C43A218742ED384C1BC0FC83D6B@IRVEXCHMB08.corp.ad.broadcom.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Peter Zijlstra
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3ccf3e8306 |
printk/sched: Introduce special printk_sched() for those awkward moments
There's a few awkward printk()s inside of scheduler guts that people prefer to keep but really are rather deadlock prone. Fudge around it by storing the text in a per-cpu buffer and poll it using the existing printk_tick() handler. This will drop output when its more frequent than once a tick, however only the affinity thing could possible go that fast and for that just one should suffice to notify the admin he's done something silly.. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/n/tip-wua3lmkt3dg8nfts66o6brne@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu> |
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Peter Zijlstra
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7abc63b1bd |
sched/rt: Do not throttle when PI boosting
When a runqueue has rt_runtime_us = 0 then the only way it can accumulate rt_time is via PI boosting. That causes the runqueue to be throttled and replenishing does not change anything due to rt_runtime_us = 0. So avoid that situation by clearing rt_time and skip the throttling alltogether. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> [ Changelog ] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/n/tip-7x70cypsotjb4jvcor3edctk@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu> |
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Peter Zijlstra
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42c62a589f |
sched/rt: Keep period timer ticking when rt throttling is active
When a runqueue is throttled we cannot disable the period timer because that timer is the only way to undo the throttling. We got stale throttling entries when a rq was throttled and then the global sysctl was disabled, which stopped the timer. Signed-off-by: Peter Zijlstra <peterz@infradead.org> [ Added changelog ] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/n/tip-nuj34q52p6ro7szapuz84i0v@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu> |
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Hiroshi Shimamoto
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de5bdff7a7 |
sched: Make initial SCHED_RR timeslace DEF_TIMESLICE
Current the initial SCHED_RR timeslice of init_task is HZ, which means 1s, and is not same as the default SCHED_RR timeslice DEF_TIMESLICE. Change that initial timeslice to the DEF_TIMESLICE. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> [ s/DEF_TIMESLICE/RR_TIMESLICE/g ] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/4F3C9995.3010800@ct.jp.nec.com Signed-off-by: Ingo Molnar <mingo@elte.hu> |
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Chanho Min
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cb297a3e43 |
sched/rt: Fix task stack corruption under __ARCH_WANT_INTERRUPTS_ON_CTXSW
This issue happens under the following conditions:
1. preemption is off
2. __ARCH_WANT_INTERRUPTS_ON_CTXSW is defined
3. RT scheduling class
4. SMP system
Sequence is as follows:
1.suppose current task is A. start schedule()
2.task A is enqueued pushable task at the entry of schedule()
__schedule
prev = rq->curr;
...
put_prev_task
put_prev_task_rt
enqueue_pushable_task
4.pick the task B as next task.
next = pick_next_task(rq);
3.rq->curr set to task B and context_switch is started.
rq->curr = next;
4.At the entry of context_swtich, release this cpu's rq->lock.
context_switch
prepare_task_switch
prepare_lock_switch
raw_spin_unlock_irq(&rq->lock);
5.Shortly after rq->lock is released, interrupt is occurred and start IRQ context
6.try_to_wake_up() which called by ISR acquires rq->lock
try_to_wake_up
ttwu_remote
rq = __task_rq_lock(p)
ttwu_do_wakeup(rq, p, wake_flags);
task_woken_rt
7.push_rt_task picks the task A which is enqueued before.
task_woken_rt
push_rt_tasks(rq)
next_task = pick_next_pushable_task(rq)
8.At find_lock_lowest_rq(), If double_lock_balance() returns 0,
lowest_rq can be the remote rq.
(But,If preemption is on, double_lock_balance always return 1 and it
does't happen.)
push_rt_task
find_lock_lowest_rq
if (double_lock_balance(rq, lowest_rq))..
9.find_lock_lowest_rq return the available rq. task A is migrated to
the remote cpu/rq.
push_rt_task
...
deactivate_task(rq, next_task, 0);
set_task_cpu(next_task, lowest_rq->cpu);
activate_task(lowest_rq, next_task, 0);
10. But, task A is on irq context at this cpu.
So, task A is scheduled by two cpus at the same time until restore from IRQ.
Task A's stack is corrupted.
To fix it, don't migrate an RT task if it's still running.
Signed-off-by: Chanho Min <chanho.min@lge.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: <stable@kernel.org>
Link: http://lkml.kernel.org/r/CAOAMb1BHA=5fm7KTewYyke6u-8DP0iUuJMpgQw54vNeXFsGpoQ@mail.gmail.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Shan Hai
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5b680fd613 |
sched/rt: Code cleanup, remove a redundant function call
The second call to sched_rt_period() is redundant, because the value of the rt_runtime was already read and it was protected by the ->rt_runtime_lock. Signed-off-by: Shan Hai <haishan.bai@gmail.com> Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1322535836-13590-2-git-send-email-haishan.bai@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu> |
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Mike Galbraith
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76854c7e8f |
sched: Use rt.nr_cpus_allowed to recover select_task_rq() cycles
rt.nr_cpus_allowed is always available, use it to bail from select_task_rq()
when only one cpu can be used, and saves some cycles for pinned tasks.
See the line marked with '*' below:
# taskset -c 3 pipe-test
PerfTop: 997 irqs/sec kernel:89.5% exact: 0.0% [1000Hz cycles], (all, CPU: 3)
------------------------------------------------------------------------------------------------
Virgin Patched
samples pcnt function samples pcnt function
_______ _____ ___________________________ _______ _____ ___________________________
2880.00 10.2% __schedule 3136.00 11.3% __schedule
1634.00 5.8% pipe_read 1615.00 5.8% pipe_read
1458.00 5.2% system_call 1534.00 5.5% system_call
1382.00 4.9% _raw_spin_lock_irqsave 1412.00 5.1% _raw_spin_lock_irqsave
1202.00 4.3% pipe_write 1255.00 4.5% copy_user_generic_string
1164.00 4.1% copy_user_generic_string 1241.00 4.5% __switch_to
1097.00 3.9% __switch_to 929.00 3.3% mutex_lock
872.00 3.1% mutex_lock 846.00 3.0% mutex_unlock
687.00 2.4% mutex_unlock 804.00 2.9% pipe_write
682.00 2.4% native_sched_clock 713.00 2.6% native_sched_clock
643.00 2.3% system_call_after_swapgs 653.00 2.3% _raw_spin_unlock_irqrestore
617.00 2.2% sched_clock_local 633.00 2.3% fsnotify
612.00 2.2% fsnotify 605.00 2.2% sched_clock_local
596.00 2.1% _raw_spin_unlock_irqrestore 593.00 2.1% system_call_after_swapgs
542.00 1.9% sysret_check 559.00 2.0% sysret_check
467.00 1.7% fget_light 472.00 1.7% fget_light
462.00 1.6% finish_task_switch 461.00 1.7% finish_task_switch
437.00 1.5% vfs_write 442.00 1.6% vfs_write
431.00 1.5% do_sync_write 428.00 1.5% do_sync_write
* 413.00 1.5% select_task_rq_fair 404.00 1.5% _raw_spin_lock_irq
386.00 1.4% update_curr 402.00 1.4% update_curr
385.00 1.4% rw_verify_area 389.00 1.4% do_sync_read
377.00 1.3% _raw_spin_lock_irq 378.00 1.4% vfs_read
369.00 1.3% do_sync_read 340.00 1.2% pipe_iov_copy_from_user
360.00 1.3% vfs_read 316.00 1.1% __wake_up_sync_key
342.00 1.2% hrtick_start_fair 313.00 1.1% __wake_up_common
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1321971504.6855.15.camel@marge.simson.net
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Peter Zijlstra
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391e43da79 |
sched: Move all scheduler bits into kernel/sched/
There's too many sched*.[ch] files in kernel/, give them their own directory. (No code changed, other than Makefile glue added.) Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu> |
Renamed from kernel/sched_rt.c (Browse further)