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Rafael J. Wysocki 87c9fe6ee4 cpuidle: menu: Avoid selecting shallow states with stopped tick 
If the scheduler tick has been stopped already and the governor
selects a shallow idle state, the CPU can spend a long time in that
state if the selection is based on an inaccurate prediction of idle
time.  That effect turns out to be relevant, so it needs to be
mitigated.

To that end, modify the menu governor to discard the result of the
idle time prediction if the tick is stopped and the predicted idle
time is less than the tick period length, unless the tick timer is
going to expire soon.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
2018-04-09 11:54:57 +02:00
..
accessibility
acpi Power management updates for 4.17-rc1 2018-04-03 10:45:39 -07:00
amba
android ANDROID: binder: synchronize_rcu() when using POLLFREE. 2018-02-16 11:16:38 +01:00
ata arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
atm atm: iphase: fix spelling mistake: "Receiverd" -> "Received" 2018-03-30 10:10:04 -04:00
auxdisplay auxdisplay: img-ascii-lcd: Silence 2 uninitialized warnings 2018-03-13 18:16:38 +01:00
base Power management updates for 4.17-rc1 2018-04-03 10:45:39 -07:00
bcma Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-19 22:59:33 -05:00
block loop: Fix lost writes caused by missing flag 2018-03-09 08:36:36 -07:00
bluetooth Bluetooth: hci_bcm: Set pulsed_host_wake flag in sleep parameters 2018-03-15 19:39:37 +01:00
bus perf: Fix sibling iteration 2018-03-16 20:44:12 +01:00
cdrom
char char: remove blackfin OTP driver 2018-03-26 15:56:35 +02:00
clk clk: bcm2835: Protect sections updating shared registers 2018-03-19 09:27:37 -07:00
clocksource arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
connector
cpufreq Power management updates for 4.17-rc1 2018-04-03 10:45:39 -07:00
cpuidle cpuidle: menu: Avoid selecting shallow states with stopped tick 2018-04-09 11:54:57 +02:00
crypto s390: 2018-02-26 09:28:35 -08:00
dax dax: ->direct_access does not sleep anymore 2018-02-26 12:32:29 -08:00
dca
devfreq
dio
dma dmaengine: stm32-dmamux: fix a potential buffer overflow 2018-03-22 10:51:35 +05:30
dma-buf dma-buf/sw_sync: Fix kerneldoc warnings 2018-02-19 10:50:49 +01:00
edac arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
eisa EISA: Delete error message for a failed memory allocation in eisa_probe() 2018-01-23 09:04:10 +01:00
extcon extcon: int3496: process id-pin first so that we start with the right status 2018-02-14 06:37:33 +09:00
firewire vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
firmware Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-04-02 17:46:37 -07:00
fmc
fpga
fsi
gpio arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
gpu Merge branch 'sched-wait-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-04-02 16:50:39 -07:00
hid usb: ldusb: add PIDs for new CASSY devices supported by this driver 2018-02-15 18:44:03 +01:00
hsi vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
hv Drivers: hv: vmbus: Fix ring buffer signaling 2018-03-06 09:52:59 -08:00
hwmon Fix bad temperature display on Ryzen/Threadripper 2018-02-15 14:31:28 -08:00
hwspinlock
hwtracing perf/x86/pt, coresight: Clean up address filter structure 2018-03-29 16:07:22 +02:00
i2c arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
ide treewide: simplify Kconfig dependencies for removed archs 2018-03-26 15:55:57 +02:00
idle
iio iio: st_pressure: st_accel: pass correct platform data to init 2018-03-10 16:28:05 +00:00
infiniband Fifth pull request for 4.16-rc 2018-03-29 19:23:24 -10:00
input arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
iommu Merge branch 'x86-dma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-04-02 17:18:45 -07:00
ipack
irqchip arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
isdn treewide: simplify Kconfig dependencies for removed archs 2018-03-26 15:55:57 +02:00
leds vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
lightnvm
macintosh macintosh/via-pmu68k: Initialize PMU driver with setup_arch and arch_initcall 2018-03-19 10:22:59 +01:00
mailbox vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
mcb
md dm: fix dropped return code from dm_get_bdev_for_ioctl 2018-03-29 23:31:32 -04:00
media arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
memory memory: brcmstb: dpfe: support new way of passing data from the DCPU 2018-02-23 10:56:59 -08:00
memstick
message scsi: mptfusion: Add bounds check in mptctl_hp_targetinfo() 2018-01-30 21:32:06 -05:00
mfd vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
misc arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
mmc arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
mtd mtd: jedec_probe: Fix crash in jedec_read_mfr() 2018-03-29 19:29:06 +02:00
mux Char/Misc driver patches for 4.16-rc1 2018-02-01 10:31:17 -08:00
net jiffies: Introduce USER_TICK_USEC and redefine TICK_USEC 2018-04-06 09:28:50 +02:00
nfc
ntb NTB: ntb_perf: fix cast to restricted __le32 2018-01-28 22:17:24 -05:00
nubus nubus: Add support for the driver model 2018-01-16 16:47:29 +01:00
nvdimm libnvdimm, nfit: fix persistence domain reporting 2018-03-21 15:12:07 -07:00
nvme nvme_fc: rework sqsize handling 2018-03-08 10:39:58 -07:00
nvmem
of Linux 4.16-rc7 2018-03-28 14:30:41 +10:00
opp opp: cpu: Replace GFP_ATOMIC with GFP_KERNEL in dev_pm_opp_init_cpufreq_table 2018-02-12 15:07:46 +05:30
oprofile
parisc
parport
pci arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
pcmcia Power management updates for 4.17-rc1 2018-04-03 10:45:39 -07:00
perf Linux 4.16-rc6 2018-03-19 20:37:35 +01:00
phy phy: qcom-ufs: add MODULE_LICENSE tag 2018-03-12 15:11:59 +05:30
pinctrl arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
platform Merge branches 'acpi-battery', 'acpi-doc' and 'acpi-pmic' 2018-04-02 10:58:13 +02:00
pnp
power power: add to_power_supply macro to the API 2018-02-21 23:27:13 +01:00
powercap powercap: RAPL: Add support for Cannon Lake 2018-03-19 00:02:24 +01:00
pps vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
ps3
ptp vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
pwm pwm: remove pwm-bfin driver 2018-03-26 15:57:08 +02:00
rapidio vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
ras mm/memory_failure: Remove unused trapno from memory_failure 2018-01-23 12:17:42 -06:00
regulator Merge remote-tracking branches 'regulator/fix/resume' and 'regulator/fix/stm32-vfrefbuf' into regulator-linus 2018-03-07 14:39:07 +00:00
remoteproc remoteproc updates for v4.16 2018-02-05 10:07:40 -08:00
reset
rpmsg vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
rtc rtc: remove bfin driver 2018-03-26 15:56:31 +02:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-22 14:10:29 -07:00
sbus pci-v4.16-changes 2018-02-06 09:59:40 -08:00
scsi SCSI fixes on 20180327 2018-03-27 14:11:46 -10:00
sfi
sh cpufreq: Add and use cpufreq_for_each_{valid_,}entry_idx() 2018-02-08 10:21:39 +01:00
siox
slimbus
sn
soc soc/fsl/qbman: fix issue in qman_delete_cgr_safe() 2018-03-14 13:16:23 -04:00
soundwire soundwire: Fix a signedness bug 2018-01-22 16:45:26 +01:00
spi spi: remove blackfin related host drivers 2018-03-26 15:57:05 +02:00
spmi
ssb Merge git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers.git 2018-02-01 10:37:39 +02:00
staging arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
target Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2018-02-09 14:49:46 -08:00
tc
tee
thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2018-02-06 15:04:58 -08:00
thunderbolt
tty Merge branch 'syscalls-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux 2018-04-02 21:22:12 -07:00
uio vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
usb arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
uwb
vfio Revert: "vfio-pci: Mask INTx if a device is not capabable of enabling it" 2018-03-21 22:50:19 -06:00
vhost vhost: validate log when IOTLB is enabled 2018-03-29 16:22:47 -04:00
video arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
virt vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
virtio virtio_ring: fix num_free handling in error case 2018-03-01 18:53:38 +02:00
visorbus
vlynq
vme
w1 Documentation updates for 4.16. New stuff includes refcount_t 2018-01-31 19:25:25 -08:00
watchdog arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
xen x86/dma: Remove dma_alloc_coherent_mask() 2018-03-20 10:01:56 +01:00
zorro zorro: Set up z->dev.dma_mask for the DMA API 2018-03-19 10:26:46 +01:00
Kconfig Char/Misc driver patches for 4.16-rc1 2018-02-01 10:31:17 -08:00
Makefile pci-v4.16-changes 2018-02-06 09:59:40 -08:00