arch/arm64/include/asm/topology.h

   1 #ifndef __ASM_TOPOLOGY_H
   2 #define __ASM_TOPOLOGY_H
   3
   4 #include <linux/cpumask.h>
   5
   6 struct cpu_topology {
   7         int thread_id;
   8         int core_id;
   9         int cluster_id;
  10         cpumask_t thread_sibling;
  11         cpumask_t core_sibling;
  12 };
  13
  14 extern struct cpu_topology cpu_topology[NR_CPUS];
  15
  16 #define topology_physical_package_id(cpu)       (cpu_topology[cpu].cluster_id)
  17 #define topology_core_id(cpu)           (cpu_topology[cpu].core_id)
  18 #define topology_core_cpumask(cpu)      (&cpu_topology[cpu].core_sibling)
  19 #define topology_sibling_cpumask(cpu)   (&cpu_topology[cpu].thread_sibling)
  20
  21 void init_cpu_topology(void);
  22 void store_cpu_topology(unsigned int cpuid);
  23 const struct cpumask *cpu_coregroup_mask(int cpu);
  24
  25 #ifdef CONFIG_NUMA
  26
  27 struct pci_bus;
  28 int pcibus_to_node(struct pci_bus *bus);
  29 #define cpumask_of_pcibus(bus)  (pcibus_to_node(bus) == -1 ?            \
  30                                  cpu_all_mask :                         \
  31                                  cpumask_of_node(pcibus_to_node(bus)))
  32
  33 #endif /* CONFIG_NUMA */
  34
  35 #include <asm-generic/topology.h>
  36
  37 #endif /* _ASM_ARM_TOPOLOGY_H */