AuxXxilium/linux_dsm_epyc7002
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c1d51f684c
linux_dsm_epyc7002/drivers
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Rafael J. Wysocki c1d51f684c cpuidle: Use nanoseconds as the unit of time 
Currently, the cpuidle subsystem uses microseconds as the unit of
time which (among other things) causes the idle loop to incur some
integer division overhead for no clear benefit.

In order to allow cpuidle to measure time in nanoseconds, add two
new fields, exit_latency_ns and target_residency_ns, to represent the
exit latency and target residency of an idle state in nanoseconds,
respectively, to struct cpuidle_state and initialize them with the
help of the corresponding values in microseconds provided by drivers.
Additionally, change cpuidle_governor_latency_req() to return the
idle state exit latency constraint in nanoseconds.

Also meeasure idle state residency (last_residency_ns in struct
cpuidle_device and time_ns in struct cpuidle_driver) in nanoseconds
and update the cpuidle core and governors accordingly.

However, the menu governor still computes typical intervals in
microseconds to avoid integer overflows.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Doug Smythies <dsmythies@telus.net>
Tested-by: Doug Smythies <dsmythies@telus.net>
2019-11-11 21:56:07 +01:00
..
accessibility
acpi ACPI: processor_idle: Skip dummy wait if kernel is in guest 2019-10-25 10:33:20 +02:00
amba ARM updates for 5.4-rc1: 2019-09-22 09:39:09 -07:00
android binder: Fix comment headers on binder_alloc_prepare_to_free() 2019-10-10 14:39:23 +02:00
ata libata/ahci: Fix PCS quirk application 2019-10-15 14:10:19 -06:00
atm atm: he: clean up an indentation issue 2019-09-25 13:54:45 +02:00
auxdisplay It's a somewhat calmer cycle for docs this time, as the churn of the mass 2019-09-17 16:22:26 -07:00
base drivers/base/memory.c: don't access uninitialized memmaps in soft_offline_page_store() 2019-10-19 06:32:31 -04:00
bcma bcma: make arrays pwr_info_offset and sprom_sizes static const, shrinks object size 2019-09-13 16:44:49 +03:00
block zram: fix race between backing_dev_show and backing_dev_store 2019-10-19 06:32:32 -04:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-09-15 14:17:27 +02:00
bus ARM: SoC fixes 2019-09-30 10:04:28 -07:00
cdrom
char char/random: Add a newline at the end of the file 2019-10-02 13:49:43 -07:00
clk Fixes for omaps for v5.4-rc cycle 2019-10-03 09:15:19 -07:00
clocksource timer-of: don't use conditional expression with mixed 'void' types 2019-10-02 16:16:07 -07:00
connector
counter
cpufreq cpufreq: Avoid cpufreq_suspend() deadlock on system shutdown 2019-10-10 11:11:17 +02:00
cpuidle cpuidle: Use nanoseconds as the unit of time 2019-11-11 21:56:07 +01:00
crypto Merge branch 'akpm' (patches from Andrew) 2019-09-24 16:10:23 -07:00
dax
dca
devfreq
dio
dma Main MIPS changes for v5.4: 2019-09-22 09:30:30 -07:00
dma-buf dma-buf/resv: fix exclusive fence get 2019-10-10 17:05:20 +02:00
edac ARM updates for 5.4-rc1: 2019-09-22 09:39:09 -07:00
eisa
extcon chrome platform changes for v5.4 2019-09-19 14:14:28 -07:00
firewire
firmware Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2019-10-15 09:20:07 -07:00
fpga Char/Misc driver patches for 5.4-rc1 2019-09-18 11:14:31 -07:00
fsi
gnss
gpio gpio: lynxpoint: set default handler to be handle_bad_irq() 2019-10-15 01:19:05 +02:00
gpu -dma-resv: Change shared_count to post-increment to fix lima crash (Qiang) 2019-10-18 06:40:28 +10:00
greybus
hid HID: hyperv: Use in-place iterator API in the channel callback 2019-10-01 14:49:41 -04:00
hsi HSI changes for the 5.4 series 2019-09-22 12:02:21 -07:00
hv Drivers: hv: vmbus: Fix harmless building warnings without CONFIG_PM_SLEEP 2019-10-01 14:49:45 -04:00
hwmon hwmon: (nct7904) Add array fan_alarm and vsen_alarm to store the alarms in nct7904_data struct. 2019-10-02 06:42:48 -07:00
hwspinlock
hwtracing Char/Misc driver patches for 5.4-rc1 2019-09-18 11:14:31 -07:00
i2c i2c: slave-eeprom: Add read only mode 2019-09-28 20:44:12 +02:00
i3c
ide
idle
iio First set of IIO fixes for the 5.4 cycle. 2019-10-10 11:18:37 +02:00
infiniband RDMA/mlx5: Add missing synchronize_srcu() for MW cases 2019-10-04 15:54:22 -03:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2019-10-17 11:18:44 -07:00
interconnect
iommu iommu/amd: Check PM_LEVEL_SIZE() condition in locked section 2019-10-18 16:52:37 +02:00
ipack
irqchip irqchip fixes for 5.4, take #1 2019-10-14 20:35:58 +02:00
isdn mISDN: enforce CAP_NET_RAW for raw sockets 2019-09-24 16:37:18 +02:00
leds leds: lm3532: Fix optional led-max-microamp prop error handling 2019-09-12 20:45:52 +02:00
lightnvm lightnvm: print error when target is not found 2019-09-05 13:17:01 -06:00
macintosh
mailbox mailbox: qcom-apcs: fix max_register value 2019-09-17 00:54:29 -05:00
mcb
md for-linus-2019-10-18 2019-10-18 22:29:36 -04:00
media media: stkwebcam: fix runtime PM after driver unbind 2019-10-04 14:38:46 +02:00
memory iommu/mediatek: Clean up struct mtk_smi_iommu 2019-08-30 15:57:27 +02:00
memstick memstick: jmb38x_ms: Fix an error handling path in 'jmb38x_ms_probe()' 2019-10-09 11:08:03 +02:00
message
mfd Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal 2019-09-29 10:24:23 -07:00
misc misc: fastrpc: prevent memory leak in fastrpc_dma_buf_attach 2019-10-04 18:22:14 +02:00
mmc mmc: sdhci-iproc: fix spurious interrupts on Multiblock reads with bcm2711 2019-10-09 11:05:50 +02:00
mtd mtd: rawnand: au1550nd: Fix au_read_buf16() prototype 2019-10-07 09:56:36 +02:00
mux
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-10-19 17:09:11 -04:00
nfc NFC: pn533: fix use-after-free and memleaks 2019-10-08 16:52:26 -07:00
ntb NTB: fix IDT Kconfig typos/spellos 2019-09-23 17:20:40 -04:00
nubus
nvdimm libnvdimm fixes v5.4-rc1 2019-09-29 10:33:41 -07:00
nvme nvme-pci: Set the prp2 correctly when using more than 4k page 2019-10-18 23:09:41 +09:00
nvmem Char/Misc driver patches for 5.4-rc1 2019-09-18 11:14:31 -07:00
of Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-09-28 17:47:33 -07:00
opp
oprofile
parisc parisc: Remove 32-bit DMA enforcement from sba_iommu 2019-10-14 21:44:26 +02:00
parport Char/Misc driver patches for 5.4-rc1 2019-09-18 11:14:31 -07:00
pci PCI: PM: Fix pci_power_up() 2019-10-15 23:51:36 +02:00
pcmcia Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2019-09-28 08:14:15 -07:00
perf
phy pci-v5.4-changes 2019-09-23 19:16:01 -07:00
pinctrl This is the bulk of pin control changes for the v5.4 kernel 2019-09-19 14:19:33 -07:00
platform platform/x86: i2c-multi-instantiate: Fail the probe if no IRQ provided 2019-10-14 15:31:50 +03:00
pnp
power power supply and reset changes for the v5.4 series 2019-09-22 12:04:59 -07:00
powercap Power management updates for 5.4-rc1 2019-09-17 19:15:14 -07:00
pps
ps3
ptp ptp: fix typo of "mechanism" in Kconfig help text 2019-10-07 14:55:46 -04:00
pwm pwm: Changes for v5.4-rc1 2019-09-27 12:19:47 -07:00
rapidio
ras
regulator LED updates for 5.4-rc1 2019-09-17 18:40:42 -07:00
remoteproc remoteproc updates for v5.4 2019-09-22 10:55:08 -07:00
reset ARM: SoC fixes 2019-09-30 10:04:28 -07:00
rpmsg rpmsg: glink-smem: Name the edge based on parent remoteproc 2019-09-17 15:33:31 -07:00
rtc RTC for 5.4 2019-09-22 11:05:43 -07:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-10-19 17:09:11 -04:00
sbus
scsi Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> 2019-10-18 08:08:53 -07:00
sfi
sh
siox
slimbus
soc ARM: SoC driver updates for v5.4 2019-09-16 15:52:38 -07:00
soundwire soundwire updates for v5.4-rc1 2019-09-22 10:52:23 -07:00
spi LED updates for 5.4-rc1 2019-09-17 18:40:42 -07:00
spmi
ssb ssb: make array pwr_info_offset static const, makes object smaller 2019-09-13 17:23:18 +03:00
staging Staging/IIO driver fixes for 5.4-rc3 2019-10-12 15:44:46 -07:00
target mm: introduce page_size() 2019-09-24 15:54:08 -07:00
tc
tee tee/shm: untag user pointers in tee_shm_register 2019-09-25 17:51:41 -07:00
thermal Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal 2019-09-29 10:24:23 -07:00
thunderbolt
tty tty: serial: imx: Use platform_get_irq_optional() for optional IRQs 2019-10-10 13:12:28 +02:00
uio Char/Misc driver patches for 5.4-rc1 2019-09-18 11:14:31 -07:00
usb USB: yurex: fix NULL-derefs on disconnect 2019-10-10 14:24:06 +02:00
vfio vfio/type1: untag user pointers in vaddr_get_pfn 2019-09-25 17:51:41 -07:00
vhost vhost/test: stop device before reset 2019-10-13 09:38:27 -04:00
video video/logo: do not generate unneeded logo C files 2019-10-05 15:29:49 +09:00
virt virt: vbox: fix memory leak in hgcm_call_preprocess_linaddr 2019-10-10 14:50:32 +02:00
virtio virtio_ring: fix unmap of indirect descriptors 2019-09-09 10:43:15 -04:00
visorbus
vlynq
vme
w1 w1: ds250x: Fix build error without CRC16 2019-10-10 15:35:41 +02:00
watchdog linux-watchdog 5.4-rc1 tag 2019-09-27 11:17:38 -07:00
xen Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-10-19 17:09:11 -04:00
zorro
Kconfig Staging/IIO driver patches for 5.4-rc1 2019-09-18 11:05:34 -07:00
Makefile Staging/IIO driver patches for 5.4-rc1 2019-09-18 11:05:34 -07:00