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linux/drivers/cpufreq
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Christian Loehle 596575060f cpufreq: Initialize cpufreq-based invariance before subsys 
[ Upstream commit 8ffe28b4e8 ]

commit 2a6c727387 ("cpufreq: Initialize cpufreq-based
frequency-invariance later") postponed the frequency invariance
initialization to avoid disabling it in the error case.
This isn't locking safe, instead move the initialization up before
the subsys interface is registered (which will rebuild the
sched_domains) and add the corresponding disable on the error path.

Observed lockdep without this patch:
[    0.989686] ======================================================
[    0.989688] WARNING: possible circular locking dependency detected
[    0.989690] 6.17.0-rc4-cix-build+ #31 Tainted: G S
[    0.989691] ------------------------------------------------------
[    0.989692] swapper/0/1 is trying to acquire lock:
[    0.989693] ffff800082ada7f8 (sched_energy_mutex){+.+.}-{4:4}, at: rebuild_sched_domains_energy+0x30/0x58
[    0.989705]
               but task is already holding lock:
[    0.989706] ffff000088c89bc8 (&policy->rwsem){+.+.}-{4:4}, at: cpufreq_online+0x7f8/0xbe0
[    0.989713]
               which lock already depends on the new lock.

Fixes: 2a6c727387 ("cpufreq: Initialize cpufreq-based frequency-invariance later")
Signed-off-by: Christian Loehle <christian.loehle@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-10-02 13:44:08 +02:00
..
acpi-cpufreq.c acpi-cpufreq: Fix nominal_freq units to KHz in get_max_boost_ratio() 2025-06-10 07:12:58 -04:00
amd-pstate-trace.c cpufreq: amd-pstate: Add trace for AMD P-State module 2021-12-30 18:51:39 +01:00
amd-pstate-trace.h cpufreq: amd-pstate: Add more tracepoint for AMD P-State module 2022-03-09 19:53:01 +01:00
amd-pstate-ut.c second round of amd-pstate changes for 6.12 (second try): 2024-09-11 18:22:23 +02:00
amd-pstate.c cpufreq/amd-pstate: Add missing NULL ptr check in amd_pstate_update 2025-06-27 11:11:39 +01:00
amd-pstate.h cpufreq/amd-pstate: Export symbols for changing modes 2024-09-11 10:23:23 -05:00
amd_freq_sensitivity.c cpufreq: amd_freq_sensitivity: Add missing pci_dev_put() 2022-11-30 19:50:04 +01:00
apple-soc-cpufreq.c cpufreq: apple-soc: Fix null-ptr-deref in apple_soc_cpufreq_get_rate() 2025-05-02 07:58:59 +02:00
armada-8k-cpufreq.c cpufreq: armada-8k: Fix off by one in armada_8k_cpufreq_free_table() 2025-08-28 16:30:53 +02:00
armada-37xx-cpufreq.c cpufreq: Explicitly include correct DT includes 2023-07-20 16:01:57 +05:30
bmips-cpufreq.c cpufreq: Make cpufreq_driver->exit() return void 2024-07-09 08:45:30 +05:30
brcmstb-avs-cpufreq.c cpufreq: brcmstb-avs-cpufreq: ISO C90 forbids mixed declarations 2024-04-25 10:36:40 +05:30
cppc_cpufreq.c cpufreq: CPPC: Mark driver with NEED_UPDATE_LIMITS flag 2025-08-20 18:30:21 +02:00
cpufreq-dt-platdev.c cpufreq: Add SM8650 to cpufreq-dt-platdev blocklist 2025-05-29 11:01:57 +02:00
cpufreq-dt.c cpufreq: Use of_property_present() 2024-08-07 12:11:45 +05:30
cpufreq-dt.h cpufreq: dt: Allow platform specific intermediate callbacks 2020-03-12 15:43:52 +05:30
cpufreq-nforce2.c cpufreq: nforce2: Remove empty exit() callback 2024-07-05 11:41:30 +05:30
cpufreq.c cpufreq: Initialize cpufreq-based invariance before subsys 2025-10-02 13:44:08 +02:00
cpufreq_conservative.c cpufreq: conservative: Simplify the condition of storing 'down_threshold' 2023-10-06 21:55:13 +02:00
cpufreq_governor.c cpufreq: governor: Fix negative 'idle_time' handling in dbs_update() 2025-04-10 14:39:10 +02:00
cpufreq_governor.h cpufreq: governor: Use kobject release() method to free dbs_data 2022-04-13 15:22:41 +02:00
cpufreq_governor_attr_set.c cpufreq: Move to_gov_attr_set() to cpufreq.h 2022-02-04 19:22:34 +01:00
cpufreq_ondemand.c cpufreq: Fix setting policy limits when frequency tables are used 2025-05-09 09:50:35 +02:00
cpufreq_ondemand.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq_performance.c cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET 2020-11-10 18:31:17 +01:00
cpufreq_powersave.c cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET 2020-11-10 18:31:17 +01:00
cpufreq_stats.c cpufreq: stats: Fix buffer overflow detection in trans_stats() 2023-10-24 22:02:06 +02:00
cpufreq_userspace.c cpufreq: userspace: Move is_managed indicator into per-policy structure 2023-10-06 22:01:26 +02:00
davinci-cpufreq.c cpufreq: davinci: Convert to platform remove callback returning void 2023-07-20 16:02:13 +05:30
e_powersaver.c cpufreq: Make cpufreq_driver->exit() return void 2024-07-09 08:45:30 +05:30
elanfreq.c cpufreq: Convert to new X86 CPU match macros 2020-03-24 21:31:27 +01:00
freq_table.c cpufreq: Fix setting policy limits when frequency tables are used 2025-05-09 09:50:35 +02:00
gx-suspmod.c cpufreq: Avoid creating excessively large stack frames 2020-01-27 10:33:33 +01:00
highbank-cpufreq.c cpufreq: Add __init annotation to module init funcs 2022-09-26 11:15:04 +05:30
imx-cpufreq-dt.c cpufreq: imx-cpufreq-dt: Convert to platform remove callback returning void 2023-07-20 16:02:13 +05:30
imx6q-cpufreq.c cpufreq: imx6: use regmap to read ocotp register 2024-01-23 11:36:21 +05:30
intel_pstate.c cpufreq: intel_pstate: Add Granite Rapids support in no-HWP mode 2025-08-20 18:30:23 +02:00
Kconfig cpufreq: fix using cpufreq-dt as module 2025-02-17 10:05:02 +01:00
Kconfig.arm cpufreq: fix compile-test defaults 2025-05-02 07:59:00 +02:00
Kconfig.powerpc cpufreq: Fix Kconfig indentation 2019-11-29 11:52:02 +01:00
Kconfig.x86 cpufreq: amd-pstate: Make amd-pstate unit tests depend on amd-pstate 2024-06-24 13:17:56 -05:00
kirkwood-cpufreq.c cpufreq: kirkwood: Convert to platform remove callback returning void 2023-07-20 16:02:13 +05:30
longhaul.c cpufreq: longhaul: Fix kernel-doc param for longhaul_setstate 2024-05-28 12:20:13 +05:30
longhaul.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
longrun.c cpufreq: Convert to new X86 CPU match macros 2020-03-24 21:31:27 +01:00
loongson2_cpufreq.c cpufreq: loongson2: Unregister platform_driver on failure 2024-12-05 14:02:04 +01:00
loongson3_cpufreq.c cpufreq: loongson3: Check for error code from devm_mutex_init() call 2024-12-05 14:02:12 +01:00
Makefile cpufreq: Add Loongson-3 CPUFreq driver support 2024-07-09 08:45:43 +05:30
maple-cpufreq.c cpufreq: powerpc: add missing MODULE_DESCRIPTION() macros 2024-08-02 14:45:20 +02:00
mediatek-cpufreq-hw.c cpufreq: mediatek-hw: Fix wrong return value in mtk_cpufreq_get_cpu_power() 2024-12-05 14:02:51 +01:00
mediatek-cpufreq.c cpufreq: Fix warning on unused of_device_id tables for !CONFIG_OF 2024-09-04 20:43:59 +05:30
mvebu-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2) 2022-06-10 14:51:35 +02:00
omap-cpufreq.c cpufreq: omap: Drop asm includes 2024-08-07 12:11:46 +05:30
p4-clockmod.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
pasemi-cpufreq.c cpufreq: powerpc: add missing MODULE_DESCRIPTION() macros 2024-08-02 14:45:20 +02:00
pcc-cpufreq.c cpufreq: pcc: Remove empty exit() callback 2024-07-05 11:42:00 +05:30
pmac32-cpufreq.c powerpc: rename SPRN_HID2 define to SPRN_HID2_750FX 2024-05-08 00:25:00 +10:00
pmac64-cpufreq.c ARM cpufreq updates for 6.12 2024-09-06 20:50:46 +02:00
powernow-k6.c cpufreq: Make cpufreq_driver->exit() return void 2024-07-09 08:45:30 +05:30
powernow-k7.c cpufreq: Make cpufreq_driver->exit() return void 2024-07-09 08:45:30 +05:30
powernow-k7.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
powernow-k8.c cpufreq: Make cpufreq_driver->exit() return void 2024-07-09 08:45:30 +05:30
powernow-k8.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 347 2019-06-05 17:37:08 +02:00
powernv-cpufreq.c ARM cpufreq updates for 6.12 2024-09-06 20:50:46 +02:00
ppc_cbe_cpufreq.c cpufreq: powerpc: add missing MODULE_DESCRIPTION() macros 2024-08-02 14:45:20 +02:00
ppc_cbe_cpufreq.h cpufreq: powerpc_cbe: Switch to QoS requests for freq limits 2019-08-26 10:02:01 +02:00
ppc_cbe_cpufreq_pervasive.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 153 2019-05-30 11:26:32 -07:00
ppc_cbe_cpufreq_pmi.c cpufreq: Explicitly include correct DT includes 2023-07-20 16:01:57 +05:30
pxa2xx-cpufreq.c cpufreq: pxa3: move clk register access to clk driver 2022-05-07 22:55:49 +02:00
pxa3xx-cpufreq.c cpufreq: pxa3: move clk register access to clk driver 2022-05-07 22:55:49 +02:00
qcom-cpufreq-hw.c cpufreq: qcom: Implement clk_ops::determine_rate() for qcom_cpufreq* clocks 2025-02-08 09:57:07 +01:00
qcom-cpufreq-nvmem.c cpufreq: Fix warning on unused of_device_id tables for !CONFIG_OF 2024-09-04 20:43:59 +05:30
qoriq-cpufreq.c cpufreq: Make cpufreq_driver->exit() return void 2024-07-09 08:45:30 +05:30
raspberrypi-cpufreq.c cpufreq: raspberrypi: Convert to platform remove callback returning void 2023-07-20 16:02:13 +05:30
s3c64xx-cpufreq.c cpufreq: s3c64xx: Fix compilation warning 2025-02-17 10:05:02 +01:00
s5pv210-cpufreq.c cpufreq: Introducing CPUFREQ_RELATION_E 2021-10-05 16:33:05 +02:00
sa1110-cpufreq.c ARM: sa1100: remove unused board files 2023-01-12 10:53:12 +01:00
sc520_freq.c cpufreq: sc520_freq: add 'fallthrough' to one case 2021-05-21 18:52:13 +02:00
scmi-cpufreq.c cpufreq: scmi: Skip SCMI devices that aren't used by the CPUs 2025-06-27 11:11:29 +01:00
scpi-cpufreq.c cpufreq: scpi: Fix null-ptr-deref in scpi_cpufreq_get_rate() 2025-05-02 07:58:59 +02:00
sh-cpufreq.c cpufreq: Make cpufreq_driver->exit() return void 2024-07-09 08:45:30 +05:30
sparc-us2e-cpufreq.c cpufreq: Make cpufreq_driver->exit() return void 2024-07-09 08:45:30 +05:30
sparc-us3-cpufreq.c cpufreq: Make cpufreq_driver->exit() return void 2024-07-09 08:45:30 +05:30
spear-cpufreq.c cpufreq: spear: Use of_property_for_each_u32() instead of open coding 2024-08-07 12:11:45 +05:30
speedstep-centrino.c ARM cpufreq updates for 6.11 2024-07-09 17:58:20 +02:00
speedstep-ich.c cpufreq: Convert to new X86 CPU match macros 2020-03-24 21:31:27 +01:00
speedstep-lib.c cpufreq: speedstep: remove unneeded semicolon 2020-10-28 18:04:07 +01:00
speedstep-lib.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
speedstep-smi.c cpufreq: Convert to new X86 CPU match macros 2020-03-24 21:31:27 +01:00
sti-cpufreq.c cpufreq: Use of_property_present() 2024-08-07 12:11:45 +05:30
sun50i-cpufreq-nvmem.c cpufreq: sun50i: prevent out-of-bounds access 2025-05-02 07:58:59 +02:00
tegra20-cpufreq.c Devicetree updates for v6.4, part 2: 2023-04-27 10:09:05 -07:00
tegra124-cpufreq.c cpupfreq: tegra124: eliminate uses of of_node_put() 2024-04-19 11:55:44 +05:30
tegra186-cpufreq.c Revert "cpufreq: tegra186: Share policy per cluster" 2025-06-10 07:12:59 -04:00
tegra194-cpufreq.c cpufreq: Make cpufreq_driver->exit() return void 2024-07-09 08:45:30 +05:30
ti-cpufreq.c cpufreq: ti-cpufreq: Use socinfo to get revision in AM62 family 2024-09-04 20:43:59 +05:30
vexpress-spc-cpufreq.c cpufreq: Make cpufreq_driver->exit() return void 2024-07-09 08:45:30 +05:30