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 package_id;
  11         int llc_id;
  12         cpumask_t thread_sibling;
  13         cpumask_t core_sibling;
  14         cpumask_t llc_sibling;
  15 };
  16
  17 extern struct cpu_topology cpu_topology[NR_CPUS];
  18
  19 #define topology_physical_package_id(cpu)       (cpu_topology[cpu].package_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 #define topology_llc_cpumask(cpu)       (&cpu_topology[cpu].llc_sibling)
  24
  25 void init_cpu_topology(void);
  26 void store_cpu_topology(unsigned int cpuid);
  27 void remove_cpu_topology(unsigned int cpuid);
  28 const struct cpumask *cpu_coregroup_mask(int cpu);
  29
  30 #ifdef CONFIG_NUMA
  31
  32 struct pci_bus;
  33 int pcibus_to_node(struct pci_bus *bus);
  34 #define cpumask_of_pcibus(bus)  (pcibus_to_node(bus) == -1 ?            \
  35                                  cpu_all_mask :                         \
  36                                  cpumask_of_node(pcibus_to_node(bus)))
  37
  38 #endif /* CONFIG_NUMA */
  39
  40 #include <linux/arch_topology.h>
  41
  42 /* Replace task scheduler's default frequency-invariant accounting */
  43 #define arch_scale_freq_capacity topology_get_freq_scale
  44
  45 /* Replace task scheduler's default cpu-invariant accounting */
  46 #define arch_scale_cpu_capacity topology_get_cpu_scale
  47
  48 /* Enable topology flag updates */
  49 #define arch_update_cpu_topology topology_update_cpu_topology
  50
  51 #include <asm-generic/topology.h>
  52
  53 #endif /* _ASM_ARM_TOPOLOGY_H */