mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-22 23:02:27 +07:00
4d753aa7b6
The CPU cooling driver uses the cpufreq policy, to get clip_cpus, the frequency table, etc. Most of the callers of CPU cooling driver's registration routines have the cpufreq policy with them, but they only pass the policy->related_cpus cpumask. The __cpufreq_cooling_register() routine then gets the policy by itself and uses it. It would be much better if the callers can pass the policy instead directly. This also fixes a basic design flaw, where the policy can be freed while the CPU cooling driver is still active. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Tested-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
124 lines
3.6 KiB
C
124 lines
3.6 KiB
C
/*
|
|
* linux/include/linux/cpu_cooling.h
|
|
*
|
|
* Copyright (C) 2012 Samsung Electronics Co., Ltd(http://www.samsung.com)
|
|
* Copyright (C) 2012 Amit Daniel <amit.kachhap@linaro.org>
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*/
|
|
|
|
#ifndef __CPU_COOLING_H__
|
|
#define __CPU_COOLING_H__
|
|
|
|
#include <linux/of.h>
|
|
#include <linux/thermal.h>
|
|
#include <linux/cpumask.h>
|
|
|
|
struct cpufreq_policy;
|
|
|
|
typedef int (*get_static_t)(cpumask_t *cpumask, int interval,
|
|
unsigned long voltage, u32 *power);
|
|
|
|
#ifdef CONFIG_CPU_THERMAL
|
|
/**
|
|
* cpufreq_cooling_register - function to create cpufreq cooling device.
|
|
* @policy: cpufreq policy.
|
|
*/
|
|
struct thermal_cooling_device *
|
|
cpufreq_cooling_register(struct cpufreq_policy *policy);
|
|
|
|
struct thermal_cooling_device *
|
|
cpufreq_power_cooling_register(struct cpufreq_policy *policy,
|
|
u32 capacitance, get_static_t plat_static_func);
|
|
|
|
/**
|
|
* of_cpufreq_cooling_register - create cpufreq cooling device based on DT.
|
|
* @np: a valid struct device_node to the cooling device device tree node.
|
|
* @policy: cpufreq policy.
|
|
*/
|
|
#ifdef CONFIG_THERMAL_OF
|
|
struct thermal_cooling_device *
|
|
of_cpufreq_cooling_register(struct device_node *np,
|
|
struct cpufreq_policy *policy);
|
|
|
|
struct thermal_cooling_device *
|
|
of_cpufreq_power_cooling_register(struct device_node *np,
|
|
struct cpufreq_policy *policy,
|
|
u32 capacitance,
|
|
get_static_t plat_static_func);
|
|
#else
|
|
static inline struct thermal_cooling_device *
|
|
of_cpufreq_cooling_register(struct device_node *np,
|
|
struct cpufreq_policy *policy)
|
|
{
|
|
return ERR_PTR(-ENOSYS);
|
|
}
|
|
|
|
static inline struct thermal_cooling_device *
|
|
of_cpufreq_power_cooling_register(struct device_node *np,
|
|
struct cpufreq_policy *policy,
|
|
u32 capacitance,
|
|
get_static_t plat_static_func)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* cpufreq_cooling_unregister - function to remove cpufreq cooling device.
|
|
* @cdev: thermal cooling device pointer.
|
|
*/
|
|
void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev);
|
|
|
|
#else /* !CONFIG_CPU_THERMAL */
|
|
static inline struct thermal_cooling_device *
|
|
cpufreq_cooling_register(struct cpufreq_policy *policy)
|
|
{
|
|
return ERR_PTR(-ENOSYS);
|
|
}
|
|
static inline struct thermal_cooling_device *
|
|
cpufreq_power_cooling_register(struct cpufreq_policy *policy,
|
|
u32 capacitance, get_static_t plat_static_func)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct thermal_cooling_device *
|
|
of_cpufreq_cooling_register(struct device_node *np,
|
|
struct cpufreq_policy *policy)
|
|
{
|
|
return ERR_PTR(-ENOSYS);
|
|
}
|
|
|
|
static inline struct thermal_cooling_device *
|
|
of_cpufreq_power_cooling_register(struct device_node *np,
|
|
struct cpufreq_policy *policy,
|
|
u32 capacitance,
|
|
get_static_t plat_static_func)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline
|
|
void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
|
|
{
|
|
return;
|
|
}
|
|
#endif /* CONFIG_CPU_THERMAL */
|
|
|
|
#endif /* __CPU_COOLING_H__ */
|