Maulik Shah 600f55da8d pmdomain: governor: Consider CPU latency tolerance from pm_domain_cpu_gov ... commit 500ba33284 upstream. pm_domain_cpu_gov is selecting a cluster idle state but does not consider latency tolerance of child CPUs. This results in deeper cluster idle state whose latency does not meet latency tolerance requirement. Select deeper idle state only if global and device latency tolerance of all child CPUs meet. Test results on SM8750 with 300 usec PM-QoS on CPU0 which is less than domain idle state entry (2150) + exit (1983) usec latency mentioned in devicetree, demonstrate the issue. # echo 300 > /sys/devices/system/cpu/cpu0/power/pm_qos_resume_latency_us Before: (Usage is incrementing) ====== # cat /sys/kernel/debug/pm_genpd/power-domain-cluster0/idle_states State Time Spent(ms) Usage Rejected Above Below S0 29817 537 8 270 0 # cat /sys/kernel/debug/pm_genpd/power-domain-cluster0/idle_states State Time Spent(ms) Usage Rejected Above Below S0 30348 542 8 271 0 After: (Usage is not incrementing due to latency tolerance) ====== # cat /sys/kernel/debug/pm_genpd/power-domain-cluster0/idle_states State Time Spent(ms) Usage Rejected Above Below S0 39319 626 14 307 0 # cat /sys/kernel/debug/pm_genpd/power-domain-cluster0/idle_states State Time Spent(ms) Usage Rejected Above Below S0 39319 626 14 307 0 Signed-off-by: Maulik Shah <maulik.shah@oss.qualcomm.com> Fixes: e94999688e ("PM / Domains: Add genpd governor for CPUs") Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20250709-pmdomain_qos-v2-1-976b12257899@oss.qualcomm.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-07-24 08:53:14 +02:00
..
firmware_loader	firmware_loader: Fix possible resource leak in fw_log_firmware_info()	2024-12-09 10:32:37 +01:00
power	pmdomain: governor: Consider CPU latency tolerance from pm_domain_cpu_gov	2025-07-24 08:53:14 +02:00
regmap	regmap-irq: Add missing kfree()	2025-02-21 13:57:19 +01:00
test
arch_numa.c
arch_topology.c
attribute_container.c
auxiliary.c
base.h	driver core: fix potential NULL pointer dereference in dev_uevent()	2025-05-02 07:51:03 +02:00
bus.c	driver core: fix potential NULL pointer dereference in dev_uevent()	2025-05-02 07:51:03 +02:00
cacheinfo.c	cacheinfo: Allocate memory during CPU hotplug if not done from the primary CPU	2024-12-14 19:59:55 +01:00
class.c	driver core: class: Fix wild pointer dereferences in API class_dev_iter_next()	2025-02-08 09:52:27 +01:00
component.c
container.c
core.c	driver core: fix potential NULL pointer dereference in dev_uevent()	2025-05-02 07:51:03 +02:00
cpu.c	x86/bugs: Add a Transient Scheduler Attacks mitigation	2025-07-10 16:03:21 +02:00
dd.c	driver core: introduce device_set_driver() helper	2025-05-02 07:51:03 +02:00
devcoredump.c
devres.c	drivers: base: devres: Allow to release group on device release	2025-04-25 10:45:18 +02:00
devtmpfs.c
driver.c
firmware.c
hypervisor.c
init.c
isa.c
Kconfig
Makefile
map.c
memory.c
module.c	drivers: base: handle module_kobject creation	2025-05-09 09:44:07 +02:00
node.c
physical_location.c
physical_location.h
pinctrl.c
platform-msi.c
platform.c
property.c
soc.c
swnode.c	software node: Correct a OOB check in software_node_get_reference_args()	2025-06-27 11:08:56 +01:00
syscore.c
topology.c	topology: Keep the cpumask unchanged when printing cpumap	2025-01-17 13:36:20 +01:00
trace.c
trace.h
transport_class.c