arch/arm/include/asm/topology.h

   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 #else
  29
  30 static inline void init_cpu_topology(void) { }
  31 static inline void store_cpu_topology(unsigned int cpuid) { }
  32
  33 #endif
  34
  35 #include <asm-generic/topology.h>
  36
  37 #endif /* _ASM_ARM_TOPOLOGY_H */