arch_topology.h
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* include/linux/arch_topology.h - arch specific cpu topology information
*/
#ifndef _LINUX_ARCH_TOPOLOGY_H_
#define _LINUX_ARCH_TOPOLOGY_H_
#include <linux/types.h>
#include <linux/percpu.h>
void topology_normalize_cpu_scale(void);
int topology_detect_flags(void);
int topology_smt_flags(void);
int topology_core_flags(void);
int topology_cpu_flags(void);
int topology_update_cpu_topology(void);
struct device_node;
bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu);
DECLARE_PER_CPU(unsigned long, cpu_scale);
struct sched_domain;
static inline
unsigned long topology_get_cpu_scale(struct sched_domain *sd, int cpu)
{
return per_cpu(cpu_scale, cpu);
}
void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity);
DECLARE_PER_CPU(unsigned long, freq_scale);
static inline
unsigned long topology_get_freq_scale(struct sched_domain *sd, int cpu)
{
return per_cpu(freq_scale, cpu);
}
DECLARE_PER_CPU(unsigned long, max_freq_scale);
static inline
unsigned long topology_get_max_freq_scale(struct sched_domain *sd, int cpu)
{
return per_cpu(max_freq_scale, cpu);
}
#endif /* _LINUX_ARCH_TOPOLOGY_H_ */