Jie Zhan 997c021abc cpufreq: CPPC: Update FIE arch_freq_scale in ticks for non-PCC regs ... Currently, the CPPC Frequency Invariance Engine (FIE) is invoked from the scheduler tick but defers the update of arch_freq_scale to a separate thread because cppc_get_perf_ctrs() would sleep if the CPC regs are in PCC. However, this deferred update mechanism is unnecessary and introduces extra overhead for non-PCC register spaces (e.g. System Memory or FFH), where accessing the regs won't sleep and can be safely performed from the tick context. Furthermore, with the CPPC FIE registered, it throws repeated warnings of "cppc_scale_freq_workfn: failed to read perf counters" on our platform with the CPC regs in System Memory and a power-down idle state enabled. That's because the remote CPU can be in a power-down idle state, and reading its perf counters returns 0. Moving the FIE handling back to the scheduler tick process makes the CPU handle its own perf counters, so it won't be idle and the issue would be inherently solved. To address the above issues, update arch_freq_scale directly in ticks for non-PCC regs and keep the deferred update mechanism for PCC regs. Reviewed-by: Lifeng Zheng <zhenglifeng1@huawei.com> Reviewed-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Jie Zhan <zhanjie9@hisilicon.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>		2026-01-27 11:21:23 +05:30
..
accel
accessibility
acpi	ACPI: CPPC: Factor out and export per-cpu cppc_perf_ctrs_in_pcc_cpu()	2026-01-27 11:21:23 +05:30
amba	soc: driver updates for 6.19	2025-12-05 17:29:04 -08:00
android	Char/Misc/IIO driver updates for 6.19-rc1	2025-12-06 18:34:24 -08:00
ata	ata fix for 6.19-rc1	2025-12-05 20:41:20 -08:00
atm	atm/fore200e: Fix possible data race in fore200e_open()	2025-11-25 12:39:26 +01:00
auxdisplay
base	More power management updates for 6.19-rc1	2025-12-10 06:29:40 +09:00
bcma
block	We have a patch that adds an initial set of tracepoints to the MDS	2025-12-14 15:24:10 +12:00
bluetooth	Bluetooth: btusb: Add new VID/PID 13d3/3533 for RTL8821CE	2025-12-01 16:21:16 -05:00
bus	Char/Misc/IIO driver updates for 6.19-rc1	2025-12-06 18:34:24 -08:00
cache
cdrom
cdx
char	Char/Misc/IIO driver updates for 6.19-rc1	2025-12-06 18:34:24 -08:00
clk	This pull request is entirely SoC clk drivers, not for lack of trying to modify	2025-12-08 09:38:52 +09:00
clocksource	soc: driver updates for 6.19	2025-12-05 17:29:04 -08:00
comedi	Char/Misc/IIO driver updates for 6.19-rc1	2025-12-06 18:34:24 -08:00
connector
counter
cpufreq	cpufreq: CPPC: Update FIE arch_freq_scale in ticks for non-PCC regs	2026-01-27 11:21:23 +05:30
cpuidle	soc: driver updates for 6.19	2025-12-05 17:29:04 -08:00
crypto	tsm for 6.19	2025-12-06 10:15:41 -08:00
cxl	soc: driver updates for 6.19, part 2	2025-12-05 17:47:59 -08:00
dax	Significant patch series in this merge are as follows:	2025-12-05 13:52:43 -08:00
dca
devfreq	PM / devfreq: Fix typo in DFSO_DOWNDIFFERENTIAL macro name	2025-11-26 13:58:59 +09:00
dibs	dibs: Remove KMSG_COMPONENT macro	2025-11-27 18:11:43 -08:00
dio
dma	dmaengine updates for v6.19	2025-12-09 06:35:53 +09:00
dma-buf	VFIO updates for v6.19-rc1	2025-12-04 18:42:48 -08:00
dpll	tools: ynl-gen: add regeneration comment	2025-11-25 19:20:42 -08:00
edac	bitmap updates for v6.19	2025-12-06 09:01:27 -08:00
eisa
extcon
firewire	firewire updates for v6.19	2025-12-04 12:26:36 -08:00
firmware	LoongArch changes for v6.19	2025-12-13 05:44:03 +12:00
fpga
fsi
fwctl
gnss
gpib	staging: gpib: Clean-up commented-out code	2025-11-26 14:28:19 +01:00
gpio	gpio updates for v6.19-rc1	2025-12-13 16:36:57 +12:00
gpu	drm fixes for 6.19-rc1	2025-12-13 17:39:28 +12:00
greybus	greybus: gb-beagleplay: Fix timeout handling in bootloader functions	2025-11-26 14:40:59 +01:00
hid	platform-drivers-x86 for v6.19-1	2025-12-10 06:38:17 +09:00
hsi
hte
hv	hyperv-next for v6.19	2025-12-09 06:10:17 +09:00
hwmon	hwmon fixes for v6.19-rc1	2025-12-09 08:46:10 +09:00
hwspinlock
hwtracing	Char/Misc/IIO driver updates for 6.19-rc1	2025-12-06 18:34:24 -08:00
i2c	i2c-for-6.19-rc1	2025-12-10 07:48:05 +09:00
i3c	i3c: adi: Fix confusing cleanup.h syntax	2025-12-12 23:59:39 +01:00
idle
iio	Char/Misc/IIO driver updates for 6.19-rc1	2025-12-06 18:34:24 -08:00
infiniband	RDMA v6.19 merge window pull request	2025-12-04 18:54:37 -08:00
input	Input updates for v6.19-rc0	2025-12-10 16:44:18 +09:00
interconnect
iommu	tsm for 6.19	2025-12-06 10:15:41 -08:00
ipack
irqchip	Misc fixes:	2025-12-14 06:07:09 +12:00
isdn
leds	soc: driver updates for 6.19	2025-12-05 17:29:04 -08:00
macintosh	soc: driver updates for 6.19	2025-12-05 17:29:04 -08:00
mailbox	mailbox: th1520: fix clock imbalance on probe failure	2025-11-28 09:47:44 -06:00
mcb
md	SCSI misc on 20251214	2025-12-14 15:35:35 +12:00
media	Modules changes for v6.19-rc1	2025-12-06 08:27:07 -08:00
memory	soc: driver updates for 6.19	2025-12-05 17:29:04 -08:00
memstick
message
mfd	MFD for v6.19	2025-12-04 15:18:33 -08:00
misc	SCSI misc on 20251214	2025-12-14 15:35:35 +12:00
mmc	MMC core:	2025-12-04 14:10:16 -08:00
most
mtd	This pull request contains the following changes for UBI and UBIFS:	2025-12-09 08:50:27 +09:00
mux	mux: mmio: Add suspend and resume support	2025-11-26 15:09:30 +01:00
net	I3C for 6.19	2025-12-08 11:25:14 +09:00
nfc
ntb
nubus
nvdimm	NVDIMM changes for 6.19	2025-12-06 09:32:25 -08:00
nvme	block-6.19-20251208	2025-12-09 08:53:24 +09:00
nvmem	Char/Misc/IIO driver updates for 6.19-rc1	2025-12-06 18:34:24 -08:00
of	soundwire updates for 6.19	2025-12-13 16:26:55 +12:00
opp
parisc	parisc architecture fixes and updates for kernel v6.19-rc1:	2025-12-06 16:24:52 -08:00
parport
pci	pci-v6.19-fixes-1	2025-12-13 16:29:22 +12:00
pcmcia
peci	Char/Misc/IIO driver updates for 6.19-rc1	2025-12-06 18:34:24 -08:00
perf	arm64 updates for 6.19:	2025-12-02 17:03:55 -08:00
phy
pinctrl	Pin control changes for the v6.19 kernel cycle:	2025-12-09 06:45:00 +09:00
platform	platform-drivers-x86 for v6.19-1	2025-12-10 06:38:17 +09:00
pmdomain	pmdomain core:	2025-12-04 13:50:39 -08:00
pnp
power	soc: driver updates for 6.19	2025-12-05 17:29:04 -08:00
powercap	Devicetree updates for v6.19:	2025-12-04 15:50:37 -08:00
pps	printk changes for 6.19	2025-12-03 12:42:36 -08:00
ps3
ptp	Networking changes for 6.19.	2025-12-03 17:24:33 -08:00
pwm	pwm: th1520: Fix missing Kconfig dependencies	2025-12-13 16:41:50 +12:00
rapidio
ras	EFI updates for v6.19:	2025-12-04 17:10:08 -08:00
regulator	regulator: Fixes for v6.19	2025-12-11 09:54:59 +09:00
remoteproc	remoteproc: qcom_q6v5_wcss: use optional reset for wcss_q6_bcr_reset	2025-11-29 15:20:23 -06:00
resctrl
reset	This pull request is entirely SoC clk drivers, not for lack of trying to modify	2025-12-08 09:38:52 +09:00
rpmsg	rpmsg: glink: remove duplicate code for rpmsg device remove	2025-11-26 10:16:10 -06:00
rtc	RTC for 6.19	2025-12-13 17:09:06 +12:00
s390	s390: Unmap early KASAN shadow on memory offlining	2025-12-07 16:15:19 +01:00
sbus
scsi	SCSI misc on 20251214	2025-12-14 15:35:35 +12:00
sh
siox
slimbus	Networking changes for 6.19.	2025-12-03 17:24:33 -08:00
soc	bitmap updates for v6.19	2025-12-06 09:01:27 -08:00
soundwire	soundwire: intel_ace2x: handle multi BPT sections	2025-12-08 12:37:27 +05:30
spi	spi: Fixes for v6.19	2025-12-11 09:57:08 +09:00
spmi
ssb
staging	Staging driver updates for 6.19-rc1	2025-12-06 18:52:00 -08:00
target	SCSI misc on 20251214	2025-12-14 15:35:35 +12:00
tc
tee
thermal	soc: driver updates for 6.19	2025-12-05 17:29:04 -08:00
thunderbolt	USB/Thunderbolt changes for 6.19-rc1	2025-12-06 18:42:12 -08:00
tty	TTY/Serial changes for 6.19-rc1	2025-12-06 18:38:19 -08:00
ufs	scsi: ufs: qcom: Fix confusing cleanup.h syntax	2025-12-08 22:11:00 -05:00
uio	uio: Add SVA support for PCI devices via uio_pci_generic_sva.c	2025-11-26 15:10:39 +01:00
usb	USB/Thunderbolt changes for 6.19-rc1	2025-12-06 18:42:12 -08:00
vdpa	Significant patch series in this merge are as follows:	2025-12-05 13:52:43 -08:00
vfio	drm next part 2 for 6.19-rc1	2025-12-04 19:42:53 -08:00
vhost	virtio,vhost: fixes, cleanups	2025-12-04 18:59:21 -08:00
video	fbdev fixes & enhancements for 6.19-rc1:	2025-12-06 15:41:26 -08:00
virt	virt: Fix Kconfig warning when selecting TSM without VIRT_DRIVERS	2025-12-04 17:34:16 -08:00
virtio	virtio: clean up features qword/dword terms	2025-11-27 02:03:07 -05:00
w1
watchdog	linux-watchdog 6.19-rc1 tag	2025-12-06 10:00:49 -08:00
xen	xen: branch for v6.19-rc1	2025-12-06 10:49:19 -08:00
zorro
Kconfig	Staging driver updates for 6.19-rc1	2025-12-06 18:52:00 -08:00
Makefile	Staging driver updates for 6.19-rc1	2025-12-06 18:52:00 -08:00