diff options
Diffstat (limited to 'arch/arm64/include/asm/topology.h')
| -rw-r--r-- | arch/arm64/include/asm/topology.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/topology.h b/arch/arm64/include/asm/topology.h new file mode 100644 index 000000000..49a0fee4f --- /dev/null +++ b/arch/arm64/include/asm/topology.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_TOPOLOGY_H +#define __ASM_TOPOLOGY_H + +#include <linux/cpumask.h> + +struct cpu_topology { + int thread_id; + int core_id; + int package_id; + int llc_id; + cpumask_t thread_sibling; + cpumask_t core_sibling; + cpumask_t llc_sibling; +}; + +extern struct cpu_topology cpu_topology[NR_CPUS]; + +#define topology_physical_package_id(cpu) (cpu_topology[cpu].package_id) +#define topology_core_id(cpu) (cpu_topology[cpu].core_id) +#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling) +#define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling) +#define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_sibling) + +void init_cpu_topology(void); +void store_cpu_topology(unsigned int cpuid); +void remove_cpu_topology(unsigned int cpuid); +const struct cpumask *cpu_coregroup_mask(int cpu); + +#ifdef CONFIG_NUMA + +struct pci_bus; +int pcibus_to_node(struct pci_bus *bus); +#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \ + cpu_all_mask : \ + cpumask_of_node(pcibus_to_node(bus))) + +#endif /* CONFIG_NUMA */ + +#include <linux/arch_topology.h> + +/* Replace task scheduler's default frequency-invariant accounting */ +#define arch_scale_freq_capacity topology_get_freq_scale + +/* Replace task scheduler's default cpu-invariant accounting */ +#define arch_scale_cpu_capacity topology_get_cpu_scale + +#include <asm-generic/topology.h> + +#endif /* _ASM_ARM_TOPOLOGY_H */ |