| Commit message (Collapse) | Author | Age | Files | Lines |
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quiet_vmstat() is an expensive function that only makes sense when we
go into NOHZ.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: aubrey.li@linux.intel.com
Cc: cl@linux.com
Cc: fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
Signed-off-by: Yaroslav Furman <yaro330@gmail.com> - port to 4.4
Signed-off-by: danny aeng <noreference@web.de>
Change-Id: I285b385b97b95df031aa862a397ff257fba90110
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Changes in 3.18.140: (87 commits)
MIPS: scall64-o32: Fix indirect syscall number load
trace: Fix preempt_enable_no_resched() abuse
sched/numa: Fix a possible divide-by-zero
ceph: ensure d_name stability in ceph_dentry_hash()
sunrpc: don't mark uninitialised items as VALID.
slip: make slhc_free() silently accept an error pointer
fs/proc/proc_sysctl.c: Fix a NULL pointer dereference
NFS: Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family.
netfilter: ebtables: CONFIG_COMPAT: drop a bogus WARN_ON
Revert "block/loop: Use global lock for ioctl() operation."
ipv4: add sanity checks in ipv4_link_failure()
team: fix possible recursive locking when add slaves
net: stmmac: move stmmac_check_ether_addr() to driver probe
qlcnic: Avoid potential NULL pointer dereference
usb: gadget: net2280: Fix overrun of OUT messages
usb: gadget: net2272: Fix net2272_dequeue()
net: ks8851: Dequeue RX packets explicitly
net: ks8851: Reassert reset pin if chip ID check fails
net: ks8851: Delay requesting IRQ until opened
net: ks8851: Set initial carrier state to down
net: ibm: fix possible object reference leak
scsi: qla4xxx: fix a potential NULL pointer dereference
usb: u132-hcd: fix resource leak
ceph: fix use-after-free on symlink traversal
scsi: zfcp: reduce flood of fcrscn1 trace records on multi-element RSCN
libata: fix using DMA buffers on stack
kconfig/[mn]conf: handle backspace (^H) key
ipv4: ip_do_fragment: Preserve skb_iif during fragmentation
ipv6: invert flowlabel sharing check in process and user mode
packet: validate msg_namelen in send directly
ipv6/flowlabel: wait rcu grace period before put_pid()
USB: yurex: Fix protection fault after device removal
USB: w1 ds2490: Fix bug caused by improper use of altsetting array
USB: core: Fix unterminated string returned by usb_string()
USB: media: disable tlg2300 driver
USB: core: Fix bug caused by duplicate interface PM usage counter
HID: debug: fix race condition with between rdesc_show() and device removal
rtc: sh: Fix invalid alarm warning for non-enabled alarm
igb: Fix WARN_ONCE on runtime suspend
bonding: show full hw address in sysfs for slave entries
jffs2: fix use-after-free on symlink traversal
scsi: storvsc: Fix calculation of sub-channel count
hugetlbfs: fix memory leak for resv_map
xsysace: Fix error handling in ace_setup
ARM: orion: don't use using 64-bit DMA masks
ARM: iop: don't use using 64-bit DMA masks
usb: usbip: fix isoc packet num validation in get_pipe
staging: iio: adt7316: allow adt751x to use internal vref for all dacs
staging: iio: adt7316: fix the dac read calculation
staging: iio: adt7316: fix the dac write calculation
media: v4l2: i2c: ov7670: Fix PLL bypass register values
scsi: libsas: fix a race condition when smp task timeout
ASoC:soc-pcm:fix a codec fixup issue in TDM case
ASoC: cs4270: Set auto-increment bit for register writes
ASoC: tlv320aic32x4: Fix Common Pins
scsi: csiostor: fix missing data copy in csio_scsi_err_handler()
iommu/amd: Set exclusion range correctly
genirq: Prevent use-after-free and work list corruption
scsi: qla2xxx: Fix incorrect region-size setting in optrom SYSFS routines
Bluetooth: hidp: fix buffer overflow
Bluetooth: Align minimum encryption key size for LE and BR/EDR connections
timer/debug: Change /proc/timer_stats from 0644 to 0600
netfilter: compat: initialize all fields in xt_init
platform/x86: sony-laptop: Fix unintentional fall-through
iio: adc: xilinx: fix potential use-after-free on remove
HID: input: add mapping for keyboard Brightness Up/Down/Toggle keys
s390/dasd: Fix capacity calculation for large volumes
s390/3270: fix lockdep false positive on view->lock
KVM: x86: avoid misreporting level-triggered irqs as edge-triggered in tracing
tools lib traceevent: Fix missing equality check for strcmp
init: initialize jump labels before command line option parsing
s390: ctcm: fix ctcm_new_device error return code
selftests/net: correct the return value for run_netsocktests
gpu: ipu-v3: dp: fix CSC handling
Don't jump to compute_result state from check_result state
USB: serial: use variable for status
USB: serial: fix unthrottle races
bridge: Fix error path for kobject_init_and_add()
net: ucc_geth - fix Oops when changing number of buffers in the ring
packet: Fix error path in packet_init
vlan: disable SIOCSHWTSTAMP in container
ipv4: Fix raw socket lookup for local traffic
bonding: fix arp_validate toggling in active-backup mode
drivers/virt/fsl_hypervisor.c: dereferencing error pointers in ioctl
drivers/virt/fsl_hypervisor.c: prevent integer overflow in ioctl
powerpc/booke64: set RI in default MSR
Linux 3.18.140
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
drivers/net/ethernet/micrel/ks8851.c
drivers/usb/usbip/stub_rx.c
kernel/irq/manage.c
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Changes in 3.18.135: (108 commits)
staging: iio: adc: ad7280a: handle error from __ad7280_read32()
ARM: 8808/1: kexec:offline panic_smp_self_stop CPU
dlm: Don't swamp the CPU with callbacks queued during recovery
x86/PCI: Fix Broadcom CNB20LE unintended sign extension (redux)
powerpc/pseries: add of_node_put() in dlpar_detach_node()
serial: fsl_lpuart: clear parity enable bit when disable parity
staging:iio:ad2s90: Make probe handle spi_setup failure
staging: iio: ad7780: update voltage on read
ARM: OMAP2+: hwmod: Fix some section annotations
modpost: validate symbol names also in find_elf_symbol
perf tools: Add Hygon Dhyana support
soc/tegra: Don't leak device tree node reference
f2fs: move dir data flush to write checkpoint process
nfsd4: fix crash on writing v4_end_grace before nfsd startup
arm64: ftrace: don't adjust the LR value
media: DaVinci-VPBE: fix error handling in vpbe_initialize()
smack: fix access permissions for keyring
usb: hub: delay hub autosuspend if USB3 port is still link training
timekeeping: Use proper seqcount initializer
ARM: dts: Fix OMAP4430 SDP Ethernet startup
mips: bpf: fix encoding bug for mm_srlv32_op
sata_rcar: fix deferred probing
clk: imx6sl: ensure MMDC CH0 handshake is bypassed
cpuidle: big.LITTLE: fix refcount leak
udf: Fix BUG on corrupted inode
ARM: pxa: avoid section mismatch warning
ASoC: fsl: Fix SND_SOC_EUKREA_TLV320 build error on i.MX8M
memstick: Prevent memstick host from getting runtime suspended during card detection
arm64: KVM: Skip MMIO insn after emulation
powerpc/uaccess: fix warning/error with access_ok()
xfrm6_tunnel: Fix spi check in __xfrm6_tunnel_alloc_spi
drbd: narrow rcu_read_lock in drbd_sync_handshake
drbd: disconnect, if the wrong UUIDs are attached on a connected peer
drbd: skip spurious timeout (ping-timeo) when failing promote
drbd: Avoid Clang warning about pointless switch statment
video: clps711x-fb: release disp device node in probe()
fbdev: fbmem: behave better with small rotated displays and many CPUs
igb: Fix an issue that PME is not enabled during runtime suspend
fbdev: fbcon: Fix unregister crash when more than one framebuffer
NFS: nfs_compare_mount_options always compare auth flavors.
hwmon: (lm80) fix a missing check of the status of SMBus read
hwmon: (lm80) fix a missing check of bus read in lm80 probe
crypto: ux500 - Use proper enum in cryp_set_dma_transfer
crypto: ux500 - Use proper enum in hash_set_dma_transfer
cifs: check ntwrk_buf_start for NULL before dereferencing it
um: Avoid marking pages with "changed protection"
niu: fix missing checks of niu_pci_eeprom_read
scripts/decode_stacktrace: only strip base path when a prefix of the path
ocfs2: don't clear bh uptodate for block read
isdn: hisax: hfc_pci: Fix a possible concurrency use-after-free bug in HFCPCI_l1hw()
gdrom: fix a memory leak bug
block/swim3: Fix -EBUSY error when re-opening device after unmount
kernel/hung_task.c: break RCU locks based on jiffies
fs/epoll: drop ovflist branch prediction
exec: load_script: don't blindly truncate shebang string
thermal: hwmon: inline helpers when CONFIG_THERMAL_HWMON is not set
dccp: fool proof ccid_hc_[rt]x_parse_options()
skge: potential memory corruption in skge_get_regs()
net: systemport: Fix WoL with password after deep sleep
net: dsa: slave: Don't propagate flag changes on down slave interfaces
enic: fix checksum validation for IPv6
ALSA: compress: Fix stop handling on compressed capture streams
fuse: call pipe_buf_release() under pipe lock
fuse: decrement NR_WRITEBACK_TEMP on the right page
fuse: handle zero sized retrieve correctly
dmaengine: imx-dma: fix wrong callback invoke
usb: phy: am335x: fix race condition in _probe
usb: gadget: udc: net2272: Fix bitwise and boolean operations
KVM: x86: work around leak of uninitialized stack contents (CVE-2019-7222)
KVM: nVMX: unconditionally cancel preemption timer in free_nested (CVE-2019-7221)
perf/x86/intel/uncore: Add Node ID mask
perf/core: Don't WARN() for impossible ring-buffer sizes
perf tests evsel-tp-sched: Fix bitwise operator
mtd: rawnand: gpmi: fix MX28 bus master lockup problem
signal: Always notice exiting tasks
signal: Better detection of synchronous signals
misc: vexpress: Off by one in vexpress_syscfg_exec()
debugfs: fix debugfs_rename parameter checking
MIPS: OCTEON: don't set octeon_dma_bar_type if PCI is disabled
ARM: iop32x/n2100: fix PCI IRQ mapping
drm/modes: Prevent division by zero htotal
drm/vmwgfx: Fix setting of dma masks
drm/vmwgfx: Return error code from vmw_execbuf_copy_fence_user
HID: debug: fix the ring buffer implementation
libceph: avoid KEEPALIVE_PENDING races in ceph_con_keepalive()
xfrm: refine validation of template and selector families
batman-adv: Avoid WARN on net_device without parent in netns
batman-adv: Force mac header to start of data on xmit
usb: host: ehci-msm: fix handling platform_get_irq result
Revert "exec: load_script: don't blindly truncate shebang string"
ARM: dts: da850-evm: Correct the sound card name
ARM: dts: kirkwood: Fix polarity of GPIO fan lines
gpio: pl061: handle failed allocations
cifs: Limit memory used by lock request calls to a page
perf/core: Fix impossible ring-buffer sizes warning
ALSA: usb-audio: Fix implicit fb endpoint setup by quirk
Input: bma150 - register input device after setting private data
Input: elantech - enable 3rd button support on Fujitsu CELSIUS H780
alpha: fix page fault handling for r16-r18 targets
alpha: Fix Eiger NR_IRQS to 128
tracing/uprobes: Fix output for multiple string arguments
signal: Restore the stop PTRACE_EVENT_EXIT
x86/a.out: Clear the dump structure initially
smsc95xx: Use skb_cow_head to deal with cloned skbs
kaweth: use skb_cow_head() to deal with cloned skbs
usb: dwc2: Remove unnecessary kfree
pinctrl: msm: fix gpio-hog related boot issues
Linux 3.18.135
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
drivers/usb/host/ehci-msm.c
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This reverts commit d962f7f1d2522b6145bd6d0896b53214e6952c95.
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(cherry picked from commit 74d23cc704d19732e70ef1579a669f7d5f09dd9a)
The timecounter code has almost nothing to do with the clocksource
code. Let it live in its own file. This will help isolate the
timecounter users from the clocksource users in the source tree.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This somehow fixes the following error caused by "BACKPORT: partial: mm,
oom_reaper: do not mmput synchronously from the oom reaper context":
include/linux/mm_types.h:473:21: error: field 'async_put_work' has incomplete type
struct work_struct async_put_work;
Signed-off-by: joshuous <joshuous@gmail.com>
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Leftover from early code.
Cc: Christoph Lameter <cl@linux.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: joshuous <joshuous@gmail.com>
Conflicts:
include/linux/tick.h
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The efficiency of suspend-to-idle depends on being able to keep CPUs
in the deepest available idle states for as much time as possible.
Ideally, they should only be brought out of idle by system wakeup
interrupts.
However, timer interrupts occurring periodically prevent that from
happening and it is not practical to chase all of the "misbehaving"
timers in a whack-a-mole fashion. A much more effective approach is
to suspend the local ticks for all CPUs and the entire timekeeping
along the lines of what is done during full suspend, which also
helps to keep suspend-to-idle and full suspend reasonably similar.
The idea is to suspend the local tick on each CPU executing
cpuidle_enter_freeze() and to make the last of them suspend the
entire timekeeping. That should prevent timer interrupts from
triggering until an IO interrupt wakes up one of the CPUs. It
needs to be done with interrupts disabled on all of the CPUs,
though, because otherwise the suspended clocksource might be
accessed by an interrupt handler which might lead to fatal
consequences.
Unfortunately, the existing ->enter callbacks provided by cpuidle
drivers generally cannot be used for implementing that, because some
of them re-enable interrupts temporarily and some idle entry methods
cause interrupts to be re-enabled automatically on exit. Also some
of these callbacks manipulate local clock event devices of the CPUs
which really shouldn't be done after suspending their ticks.
To overcome that difficulty, introduce a new cpuidle state callback,
->enter_freeze, that will be guaranteed (1) to keep interrupts
disabled all the time (and return with interrupts disabled) and (2)
not to touch the CPU timer devices. Modify cpuidle_enter_freeze() to
look for the deepest available idle state with ->enter_freeze present
and to make the CPU execute that callback with suspended tick (and the
last of the online CPUs to execute it with suspended timekeeping).
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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The way the schedutil governor uses the PELT metric causes it to
underestimate the CPU utilization in some cases.
That can be easily demonstrated by running kernel compilation on
a Sandy Bridge Intel processor, running turbostat in parallel with
it and looking at the values written to the MSR_IA32_PERF_CTL
register. Namely, the expected result would be that when all CPUs
were 100% busy, all of them would be requested to run in the maximum
P-state, but observation shows that this clearly isn't the case.
The CPUs run in the maximum P-state for a while and then are
requested to run slower and go back to the maximum P-state after
a while again. That causes the actual frequency of the processor to
visibly oscillate below the sustainable maximum in a jittery fashion
which clearly is not desirable.
That has been attributed to CPU utilization metric updates on task
migration that cause the total utilization value for the CPU to be
reduced by the utilization of the migrated task. If that happens,
the schedutil governor may see a CPU utilization reduction and will
attempt to reduce the CPU frequency accordingly right away. That
may be premature, though, for example if the system is generally
busy and there are other runnable tasks waiting to be run on that
CPU already.
This is unlikely to be an issue on systems where cpufreq policies are
shared between multiple CPUs, because in those cases the policy
utilization is computed as the maximum of the CPU utilization values
over the whole policy and if that turns out to be low, reducing the
frequency for the policy most likely is a good idea anyway. On
systems with one CPU per policy, however, it may affect performance
adversely and even lead to increased energy consumption in some cases.
On those systems it may be addressed by taking another utilization
metric into consideration, like whether or not the CPU whose
frequency is about to be reduced has been idle recently, because if
that's not the case, the CPU is likely to be busy in the near future
and its frequency should not be reduced.
To that end, use the counter of idle calls in the timekeeping code.
Namely, make the schedutil governor look at that counter for the
current CPU every time before its frequency is about to be reduced.
If the counter has not changed since the previous iteration of the
governor computations for that CPU, the CPU has been busy for all
that time and its frequency should not be decreased, so if the new
frequency would be lower than the one set previously, the governor
will skip the frequency update.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Joel Fernandes <joelaf@google.com>
(cherry picked from commit b7eaf1aab9f8bd2e49fceed77ebc66c1b5800718)
(simple CPUFREQ_RT_DL vs CPUFREQ_DL usage conflicts)
Signed-off-by: Chris Redpath <chris.redpath@arm.com>
Change-Id: I531ec02c052944ee07a904dc2a25c59948ee762b
Signed-off-by: joshuous <joshuous@gmail.com>
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Eliminate the HMP extensions and load tracking added
on top of the scheduler in order to bring in EAS. Also,
disable some MSM specific features as well.
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>
Signed-off-by: joshuous <joshuous@gmail.com>
Conflicts:
arch/arm64/configs/msm-perf_defconfig
drivers/base/cpu.c
kernel/sched/qhmp_core.c
kernel/sched/qhmp_sched.h
kernel/sched/rt.c
kernel/sched/sched.h
Fixing compilation errors in fair.c and core.c due to merging EAS patches into mainline android-msm-marlin-3.18.
Change-Id: I8b9b1113a1138183c8bd364f3d2dd88dc156f100
sched: Remove remaining HMP functions
Signed-off-by: joshuous <joshuous@gmail.com>
sched: Add back removed raw_spin_lock_irqsave()
This was wrongly removed by the Revert HMP commit.
Signed-off-by: joshuous <joshuous@gmail.com>
sched: Remove deprecated argument from nohz_kick_needed()
The Revert HMP commit forgot to remove this.
Signed-off-by: joshuous <joshuous@gmail.com>
Revert "sched: Provide a wake up API without sending freq notifications"
This reverts commit 9f479bdc708bbb85b73619f837c5fe7a25100f11.
Signed-off-by: joshuous <joshuous@gmail.com>
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This reverts commit 00ff7d46e5f8709fa5b20418f329b4d8f9ecfbc8.
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