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Linux/arch/arm/include/asm/topology.h

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #ifndef _ASM_ARM_TOPOLOGY_H
  3 #define _ASM_ARM_TOPOLOGY_H
  4 
  5 #ifdef CONFIG_ARM_CPU_TOPOLOGY
  6 
  7 #include <linux/cpumask.h>
  8 
  9 struct cputopo_arm {
 10         int thread_id;
 11         int core_id;
 12         int socket_id;
 13         cpumask_t thread_sibling;
 14         cpumask_t core_sibling;
 15 };
 16 
 17 extern struct cputopo_arm cpu_topology[NR_CPUS];
 18 
 19 #define topology_physical_package_id(cpu)       (cpu_topology[cpu].socket_id)
 20 #define topology_core_id(cpu)           (cpu_topology[cpu].core_id)
 21 #define topology_core_cpumask(cpu)      (&cpu_topology[cpu].core_sibling)
 22 #define topology_sibling_cpumask(cpu)   (&cpu_topology[cpu].thread_sibling)
 23 
 24 void init_cpu_topology(void);
 25 void store_cpu_topology(unsigned int cpuid);
 26 const struct cpumask *cpu_coregroup_mask(int cpu);
 27 
 28 #include <linux/arch_topology.h>
 29 
 30 /* Replace task scheduler's default frequency-invariant accounting */
 31 #define arch_scale_freq_capacity topology_get_freq_scale
 32 
 33 /* Replace task scheduler's default cpu-invariant accounting */
 34 #define arch_scale_cpu_capacity topology_get_cpu_scale
 35 
 36 #else
 37 
 38 static inline void init_cpu_topology(void) { }
 39 static inline void store_cpu_topology(unsigned int cpuid) { }
 40 
 41 #endif
 42 
 43 #include <asm-generic/topology.h>
 44 
 45 #endif /* _ASM_ARM_TOPOLOGY_H */
 46 

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