mirror of https://github.com/torvalds/linux.git
7 Commits
| Author | SHA1 | Message | Date |
|---|---|---|---|
Linus Torvalds
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52206f82d9 |
pmdomain core:
- Allow power-off for out-of-band wakeup-capable devices - Drop the redundant call to dev_pm_domain_detach() for the amba bus - Extend the genpd governor for CPUs to account for IPIs pmdomain providers: - bcm: Add support for BCM2712 - mediatek: Add support for MFlexGraphics power domains - mediatek: Add support for MT8196 power domains - qcom: Add RPMh power domain support for Kaanapali - rockchip: Add support for RV1126B pmdomain consumers: - usb: dwc3: Enable out of band wakeup for i.MX95 - usb: chipidea: Enable out of band wakeup for i.MX95 -----BEGIN PGP SIGNATURE----- iQJLBAABCgA1FiEEugLDXPmKSktSkQsV/iaEJXNYjCkFAmkt1HYXHHVsZi5oYW5z c29uQGxpbmFyby5vcmcACgkQ/iaEJXNYjCk3PQ//W24ZdZ5cqXJASrw4YihTovbR Pk/cVBacua32r3uBAf+GKdhAXrC7zaPbohp4tou5tpuY6I54NDJ4mpaTLUr+iZ6A aiKGprBrNCNMU7Mu6Af23peQNo0t+0sdsxp3wjZAMcSK0/ioOnc2R+IZhjHI9dPh Us7Ke/Pa1DRu78T0P2quRvIIRPv5iGep2vL8LFkQtPNS4tAU5ZHTWghVip+Q0m7x 660WwZ5a9Bkzii/mqxFlXnXMnFjaJwi7zEPEKEMKd88cTjZXZGqScq8Ojfxto4Jx mdn9kPqwUR2QILTVKyBy2nJTeCB5nLvLhldi5/1nVxhqopN5ll4VwFx8CVsEPVTQ l76IUMzdAmztnVqs1p7qZ8dyFKdYztNRSESapumpu10/DIIOgWW4eLNk5Sk+7d0K 1fZDL/hWV2j4gnY0wSjGht2JQ2jhDBsgkxInxvQY2a8Ik91gwyUsD7r3mCq/YwaA 97GJHk9YO75jolFPy6PniXttzVuoJXPEcvgpBR3br1iFRQhSoGIEfFcDnZEaH9Sw m7nSc1Q99a6rsmq+WavB5JVPZBr2UkBhE6x+IU+MEBPwykjNj/1cZ7x4rtqzX666 eOn1FBDQ63CLEQl3hAPp1pxy3YB0nHcxKR9CPAZjECwZTfsYgJCrRNHyZb+yhPsU qKKXXMaOyyowoLraGbQ= =Fkue -----END PGP SIGNATURE----- Merge tag 'pmdomain-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm Pull pmdomain updates from Ulf Hansson: "pmdomain core: - Allow power-off for out-of-band wakeup-capable devices - Drop the redundant call to dev_pm_domain_detach() for the amba bus - Extend the genpd governor for CPUs to account for IPIs pmdomain providers: - bcm: Add support for BCM2712 - mediatek: Add support for MFlexGraphics power domains - mediatek: Add support for MT8196 power domains - qcom: Add RPMh power domain support for Kaanapali - rockchip: Add support for RV1126B pmdomain consumers: - usb: dwc3: Enable out of band wakeup for i.MX95 - usb: chipidea: Enable out of band wakeup for i.MX95" * tag 'pmdomain-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm: (26 commits) pmdomain: Extend the genpd governor for CPUs to account for IPIs smp: Introduce a helper function to check for pending IPIs pmdomain: mediatek: convert from clk round_rate() to determine_rate() amba: bus: Drop dev_pm_domain_detach() call pmdomain: bcm: bcm2835-power: Prepare to support BCM2712 pmdomain: mediatek: mtk-mfg: select MAILBOX in Kconfig pmdomain: mediatek: Add support for MFlexGraphics pmdomain: mediatek: Fix build-errors cpuidle: psci: Replace deprecated strcpy in psci_idle_init_cpu pmdomain: rockchip: Add support for RV1126B pmdomain: mediatek: Add support for MT8196 HFRPSYS power domains pmdomain: mediatek: Add support for MT8196 SCPSYS power domains pmdomain: mediatek: Add support for secure HWCCF infra power on pmdomain: mediatek: Add support for Hardware Voter power domains pmdomain: qcom: rpmhpd: Add RPMh power domain support for Kaanapali usb: dwc3: imx8mp: Set out of band wakeup for i.MX95 usb: chipidea: ci_hdrc_imx: Set out of band wakeup for i.MX95 usb: chipidea: core: detach power domain for ci_hdrc platform device pmdomain: core: Allow power-off for out-of-band wakeup-capable devices PM: wakeup: Add out-of-band system wakeup support for devices ... |
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Ulf Hansson
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e2e4695f01 |
pmdomain: Respect the CPU system wakeup QoS limit for cpuidle
The CPU system wakeup QoS limit must be respected for the regular cpuidle state selection. Therefore, let's extend the genpd governor for CPUs to take the constraint into account when it selects a domain idle state for the corresponding PM domain. Reviewed-by: Dhruva Gole <d-gole@ti.com> Reviewed-by: Kevin Hilman (TI) <khilman@baylibre.com> Tested-by: Kevin Hilman (TI) <khilman@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/20251125112650.329269-4-ulf.hansson@linaro.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Ulf Hansson
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8e7de6dc42 |
pmdomain: Respect the CPU system wakeup QoS limit for s2idle
A CPU system wakeup QoS limit may have been requested by user space. To avoid breaking this constraint when entering a low power state during s2idle through genpd, let's extend the corresponding genpd governor for CPUs. More precisely, during s2idle let the genpd governor select a suitable domain idle state, by taking into account the QoS limit. Reviewed-by: Dhruva Gole <d-gole@ti.com> Reviewed-by: Kevin Hilman (TI) <khilman@baylibre.com> Tested-by: Kevin Hilman (TI) <khilman@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/20251125112650.329269-3-ulf.hansson@linaro.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Ulf Hansson
|
0346625cd7 |
pmdomain: Extend the genpd governor for CPUs to account for IPIs
When the genpd governor for CPUs, tries to select the most optimal idle state for a group of CPUs managed in a PM domain, it fails far too often. On a Dragonboard 410c, which is an arm64 based platform with 4 CPUs in one cluster that is using PSCI OS-initiated mode, we can observe that we often fail when trying to enter the selected idle state. This is certainly a suboptimal behaviour that leads to many unnecessary requests being sent to the PSCI FW. A simple dd operation that reads from the eMMC, to generate some IRQs and I/O handling helps us to understand the problem, while also monitoring the rejected counters in debugfs for the corresponding idle states of the genpd in question. Menu governor: cat /sys/kernel/debug/pm_genpd/power-domain-cluster/idle_states State Time Spent(ms) Usage Rejected Above Below S0 1451 437 91 149 0 S1 65194 558 149 172 0 dd if=/dev/mmcblk0 of=/dev/null bs=1M count=500 524288000 bytes (500.0MB) copied, 3.562698 seconds, 140.3MB/s cat /sys/kernel/debug/pm_genpd/power-domain-cluster/idle_states State Time Spent(ms) Usage Rejected Above Below S0 2694 1073 265 892 1 S1 74567 829 561 790 0 The dd completed in ~3.6 seconds and rejects increased with 586. Teo governor: cat /sys/kernel/debug/pm_genpd/power-domain-cluster/idle_states State Time Spent(ms) Usage Rejected Above Below S0 4976 2096 392 1721 2 S1 160661 1893 1309 1904 0 dd if=/dev/mmcblk0 of=/dev/null bs=1M count=500 524288000 bytes (500.0MB) copied, 3.543225 seconds, 141.1MB/s cat /sys/kernel/debug/pm_genpd/power-domain-cluster/idle_states State Time Spent(ms) Usage Rejected Above Below S0 5192 2194 433 1830 2 S1 167677 2891 3184 4729 0 The dd completed in ~3.6 seconds and rejects increased with 1916. The main reason to the above problem is pending IPIs for one of the CPUs that is affected by the idle state that the genpd governor selected. This leads to that the PSCI FW refuses to enter it. To improve the behaviour, let's start to take into account pending IPIs for CPUs in the genpd governor, hence we fallback to use the shallower per CPU idle state. Re-testing with this change shows a significant improved behaviour. - Menu governor: cat /sys/kernel/debug/pm_genpd/power-domain-cluster/idle_states State Time Spent(ms) Usage Rejected Above Below S0 2556 878 19 368 1 S1 69974 596 10 152 0 dd if=/dev/mmcblk0 of=/dev/null bs=1M count=500 524288000 bytes (500.0MB) copied, 3.522010 seconds, 142.0MB/s cat /sys/kernel/debug/pm_genpd/power-domain-cluster/idle_states State Time Spent(ms) Usage Rejected Above Below S0 3360 1320 28 819 1 S1 70168 710 11 267 0 The dd completed in ~3.5 seconds and rejects increased with 10. - Teo governor cat /sys/kernel/debug/pm_genpd/power-domain-cluster/idle_states State Time Spent(ms) Usage Rejected Above Below S0 5145 1861 39 938 1 S1 188887 3117 51 1975 0 dd if=/dev/mmcblk0 of=/dev/null bs=1M count=500 524288000 bytes (500.0MB) copied, 3.653100 seconds, 136.9MB/s cat /sys/kernel/debug/pm_genpd/power-domain-cluster/idle_states State Time Spent(ms) Usage Rejected Above Below S0 5260 1923 42 1002 1 S1 190849 4033 52 2892 0 The dd completed in ~3.7 seconds and rejects increased with 4. Note that, the rejected counters in genpd are also being accumulated in the rejected counters that are managed by cpuidle, yet on a per CPU idle states basis. Comparing these counters before/after this change, through cpuidle's sysfs interface shows the similar improvements. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> |
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Maulik Shah
|
500ba33284 |
pmdomain: governor: Consider CPU latency tolerance from pm_domain_cpu_gov
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:
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Ulf Hansson
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0a8a888167 |
pmdomain: core: Add residency reflection for domain-idlestates to debugfs
For regular cpuidle states we are reflecting over the selected/entered state to see if the sleep-duration meets the residency for the state. The output from the reflection is an "above" value to indicate the number of times the state was too deep and a "below" value for the number of times it was too shallow. Let's implement the similar thing for genpd's domain-idlestates along with genpd's governor and put the information in the genpd's debugfs. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20250314100103.1294715-5-ulf.hansson@linaro.org |
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Ulf Hansson
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d6948c13b6 |
PM: domains: Move genpd and its governor to the pmdomain subsystem
It seems reasonable to collect the core parts for the generic PM domain, along with its corresponding provider drivers. Therefore let's move the files from drivers/base/power/ to drivers/pmdomain/ and while at it, let's also rename the files accordingly. Moreover, let's also update MAINTAINERS to reflect the update. Cc: Kevin Hilman <khilman@kernel.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Link: https://lore.kernel.org/r/20231213113305.29098-1-ulf.hansson@linaro.org |