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 
11 void topology_normalize_cpu_scale(void);
12 
13 struct device_node;
14 bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu);
15 
16 DECLARE_PER_CPU(unsigned long, cpu_scale);
17 
18 struct sched_domain;
19 static inline
topology_get_cpu_scale(struct sched_domain * sd,int cpu)20 unsigned long topology_get_cpu_scale(struct sched_domain *sd, int cpu)
21 {
22 	return per_cpu(cpu_scale, cpu);
23 }
24 
25 void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity);
26 
27 DECLARE_PER_CPU(unsigned long, freq_scale);
28 
29 static inline
topology_get_freq_scale(int cpu)30 unsigned long topology_get_freq_scale(int cpu)
31 {
32 	return per_cpu(freq_scale, cpu);
33 }
34 
35 #endif /* _LINUX_ARCH_TOPOLOGY_H_ */
36