UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

ACPI: processor: thermal: Update CPU cooling devices on cpufreq policy changes 

When a cpufreq policy appears or goes away, the CPU cooling devices for
the CPUs covered by that policy need to be updated so that the new
processor_get_max_state() value is stored as max_state and the
statistics in sysfs are rearranged for each of them.

Do that accordingly in acpi_thermal_cpufreq_init() and
acpi_thermal_cpufreq_exit().

Fixes: a365105c685c("thermal: sysfs: Reuse cdev->max_state")
Reported-by: Wang, Quanxian <quanxian.wang@intel.com>
Link: https://lore.kernel.org/linux-pm/53ec1f06f61c984100868926f282647e57ecfb2d.camel@intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
Rafael J. Wysocki 2023-03-17 18:03:40 +01:00
parent 790930f442
commit 22c52fa515
1 changed files with 11 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/acpi/processor_thermal.c
View File

@ -140,9 +140,13 @@ void acpi_thermal_cpufreq_init(struct cpufreq_policy *policy)
ret = freq_qos_add_request(&policy->constraints,
&pr->thermal_req,
FREQ_QOS_MAX, INT_MAX);
if (ret < 0)
if (ret < 0) {
pr_err("Failed to add freq constraint for CPU%d (%d)\n",
cpu, ret);
continue;
}
thermal_cooling_device_update(pr->cdev);
}
}
@ -153,8 +157,12 @@ void acpi_thermal_cpufreq_exit(struct cpufreq_policy *policy)
for_each_cpu(cpu, policy->related_cpus) {
struct acpi_processor *pr = per_cpu(processors, cpu);
if (pr)
freq_qos_remove_request(&pr->thermal_req);
if (!pr)
continue;
freq_qos_remove_request(&pr->thermal_req);
thermal_cooling_device_update(pr->cdev);
}
}
#else /* ! CONFIG_CPU_FREQ */