topology.h 726 字节
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
#ifndef __ASM_TOPOLOGY_H
#define __ASM_TOPOLOGY_H

#include <linux/cpumask.h>

struct cpu_topology {
	int thread_id;
	int core_id;
	int cluster_id;
	cpumask_t thread_sibling;
	cpumask_t core_sibling;
};

extern struct cpu_topology cpu_topology[NR_CPUS];

#define topology_physical_package_id(cpu)	(cpu_topology[cpu].cluster_id)
#define topology_core_id(cpu)		(cpu_topology[cpu].core_id)
#define topology_core_cpumask(cpu)	(&cpu_topology[cpu].core_sibling)
19
#define topology_sibling_cpumask(cpu)	(&cpu_topology[cpu].thread_sibling)
20 21 22 23 24 25 26 27

void init_cpu_topology(void);
void store_cpu_topology(unsigned int cpuid);
const struct cpumask *cpu_coregroup_mask(int cpu);

#include <asm-generic/topology.h>

#endif /* _ASM_ARM_TOPOLOGY_H */