LXR linux/include/linux/arch

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * include/linux/arch_topology.h - arch specific cpu topology information
   4 */
   5#ifndef _LINUX_ARCH_TOPOLOGY_H_
   6#define _LINUX_ARCH_TOPOLOGY_H_
   7
   8#include <linux/types.h>
   9#include <linux/percpu.h>
  10
  11void topology_normalize_cpu_scale(void);
  12int topology_update_cpu_topology(void);
  13
  14struct device_node;
  15bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu);
  16
  17DECLARE_PER_CPU(unsigned long, cpu_scale);
  18
  19struct sched_domain;
  20static inline
  21unsigned long topology_get_cpu_scale(struct sched_domain *sd, int cpu)
  22{
  23        return per_cpu(cpu_scale, cpu);
  24}
  25
  26void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity);
  27
  28DECLARE_PER_CPU(unsigned long, freq_scale);
  29
  30static inline
  31unsigned long topology_get_freq_scale(int cpu)
  32{
  33        return per_cpu(freq_scale, cpu);
  34}
  35
  36#endif /* _LINUX_ARCH_TOPOLOGY_H_ */
  37