1 /* SPDX-License-Identifier: GPL-2.0 */
3 * include/linux/arch_topology.h - arch specific cpu topology information
5 #ifndef _LINUX_ARCH_TOPOLOGY_H_
6 #define _LINUX_ARCH_TOPOLOGY_H_
8 #include <linux/types.h>
9 #include <linux/percpu.h>
11 void topology_normalize_cpu_scale(void);
12 int topology_update_cpu_topology(void);
15 bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu);
17 DECLARE_PER_CPU(unsigned long, cpu_scale);
21 unsigned long topology_get_cpu_scale(struct sched_domain *sd, int cpu)
23 return per_cpu(cpu_scale, cpu);
26 void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity);
28 DECLARE_PER_CPU(unsigned long, freq_scale);
31 unsigned long topology_get_freq_scale(int cpu)
33 return per_cpu(freq_scale, cpu);
36 #endif /* _LINUX_ARCH_TOPOLOGY_H_ */