arch/arm64/include/asm/topology.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ASM_TOPOLOGY_H
   3 #define __ASM_TOPOLOGY_H
   4
   5 #include <linux/cpumask.h>
   6
   7 struct cpu_topology {
   8         int thread_id;
   9         int core_id;
  10         int cluster_id;
  11         cpumask_t thread_sibling;
  12         cpumask_t core_sibling;
  13 };
  14
  15 extern struct cpu_topology cpu_topology[NR_CPUS];
  16
  17 #define topology_physical_package_id(cpu)       (cpu_topology[cpu].cluster_id)
  18 #define topology_core_id(cpu)           (cpu_topology[cpu].core_id)
  19 #define topology_core_cpumask(cpu)      (&cpu_topology[cpu].core_sibling)
  20 #define topology_sibling_cpumask(cpu)   (&cpu_topology[cpu].thread_sibling)
  21
  22 void init_cpu_topology(void);
  23 void store_cpu_topology(unsigned int cpuid);
  24 const struct cpumask *cpu_coregroup_mask(int cpu);
  25
  26 #ifdef CONFIG_NUMA
  27
  28 struct pci_bus;
  29 int pcibus_to_node(struct pci_bus *bus);
  30 #define cpumask_of_pcibus(bus)  (pcibus_to_node(bus) == -1 ?            \
  31                                  cpu_all_mask :                         \
  32                                  cpumask_of_node(pcibus_to_node(bus)))
  33
  34 #endif /* CONFIG_NUMA */
  35
  36 #include <asm-generic/topology.h>
  37
  38 #endif /* _ASM_ARM_TOPOLOGY_H */