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cpufreq: CPPC: Remove cpu_data_list

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After commit a28b2bfc09 ("cppc_cpufreq: replace per-cpu data array with a
list"), cpu_data can be got from policy->driver_data, so cpu_data_list is
not actually needed and can be removed.

Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Link: https://patch.msgid.link/20250526113057.3086513-2-zhenglifeng1@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lifeng Zheng 2025-05-26 19:30:55 +08:00 • committed by Rafael J. Wysocki
parent e04c78d86a
commit d80a756240
2 changed files with 0 additions and 26 deletions
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25
drivers/cpufreq/cppc_cpufreq.c
View file

@ -26,14 +26,6 @@
#include <acpi/cppc_acpi.h>
/*
* This list contains information parsed from per CPU ACPI _CPC and _PSD
* structures: e.g. the highest and lowest supported performance, capabilities,
* desired performance, level requested etc. Depending on the share_type, not
* all CPUs will have an entry in the list.
*/
static LIST_HEAD(cpu_data_list);
static struct cpufreq_driver cppc_cpufreq_driver;
#ifdef CONFIG_ACPI_CPPC_CPUFREQ_FIE
@ -567,8 +559,6 @@ static struct cppc_cpudata *cppc_cpufreq_get_cpu_data(unsigned int cpu)
goto free_mask;
}
list_add(&cpu_data->node, &cpu_data_list);
return cpu_data;
free_mask:
@ -583,7 +573,6 @@ static void cppc_cpufreq_put_cpu_data(struct cpufreq_policy *policy)
{
struct cppc_cpudata *cpu_data = policy->driver_data;
list_del(&cpu_data->node);
free_cpumask_var(cpu_data->shared_cpu_map);
kfree(cpu_data);
policy->driver_data = NULL;
@ -954,24 +943,10 @@ static int __init cppc_cpufreq_init(void)
return ret;
}
static inline void free_cpu_data(void)
{
struct cppc_cpudata *iter, *tmp;
list_for_each_entry_safe(iter, tmp, &cpu_data_list, node) {
free_cpumask_var(iter->shared_cpu_map);
list_del(&iter->node);
kfree(iter);
}
}
static void __exit cppc_cpufreq_exit(void)
{
cpufreq_unregister_driver(&cppc_cpufreq_driver);
cppc_freq_invariance_exit();
free_cpu_data();
}
module_exit(cppc_cpufreq_exit);

1
include/acpi/cppc_acpi.h
View file

@ -139,7 +139,6 @@ struct cppc_perf_fb_ctrs {
/* Per CPU container for runtime CPPC management. */
struct cppc_cpudata {
struct list_head node;
struct cppc_perf_caps perf_caps;
struct cppc_perf_ctrls perf_ctrls;
struct cppc_perf_fb_ctrs perf_fb_ctrs;