swh:1:snp:77163734605b0ec556b01d897b7bb4a7e30d46b6
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Tip revision: b953c0d234bc72e8489d3bf51a276c5c4ec85345 authored by Linus Torvalds on 22 June 2015, 05:05:43 UTC
Linux 4.1
Tip revision: b953c0d
topology.h
#ifndef __ASM_TOPOLOGY_H
#define __ASM_TOPOLOGY_H

#ifdef CONFIG_SMP

#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)
#define topology_thread_cpumask(cpu)	(&cpu_topology[cpu].thread_sibling)

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

#else

static inline void init_cpu_topology(void) { }
static inline void store_cpu_topology(unsigned int cpuid) { }

#endif

#include <asm-generic/topology.h>

#endif /* _ASM_ARM_TOPOLOGY_H */
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