162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef __LIBPERF_INTERNAL_CPUMAP_H 362306a36Sopenharmony_ci#define __LIBPERF_INTERNAL_CPUMAP_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <linux/refcount.h> 662306a36Sopenharmony_ci#include <perf/cpumap.h> 762306a36Sopenharmony_ci#include <internal/rc_check.h> 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci/** 1062306a36Sopenharmony_ci * A sized, reference counted, sorted array of integers representing CPU 1162306a36Sopenharmony_ci * numbers. This is commonly used to capture which CPUs a PMU is associated 1262306a36Sopenharmony_ci * with. The indices into the cpumap are frequently used as they avoid having 1362306a36Sopenharmony_ci * gaps if CPU numbers were used. For events associated with a pid, rather than 1462306a36Sopenharmony_ci * a CPU, a single dummy map with an entry of -1 is used. 1562306a36Sopenharmony_ci */ 1662306a36Sopenharmony_ciDECLARE_RC_STRUCT(perf_cpu_map) { 1762306a36Sopenharmony_ci refcount_t refcnt; 1862306a36Sopenharmony_ci /** Length of the map array. */ 1962306a36Sopenharmony_ci int nr; 2062306a36Sopenharmony_ci /** The CPU values. */ 2162306a36Sopenharmony_ci struct perf_cpu map[]; 2262306a36Sopenharmony_ci}; 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_ci#ifndef MAX_NR_CPUS 2562306a36Sopenharmony_ci#define MAX_NR_CPUS 2048 2662306a36Sopenharmony_ci#endif 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_cistruct perf_cpu_map *perf_cpu_map__alloc(int nr_cpus); 2962306a36Sopenharmony_ciint perf_cpu_map__idx(const struct perf_cpu_map *cpus, struct perf_cpu cpu); 3062306a36Sopenharmony_cibool perf_cpu_map__is_subset(const struct perf_cpu_map *a, const struct perf_cpu_map *b); 3162306a36Sopenharmony_ci 3262306a36Sopenharmony_civoid perf_cpu_map__set_nr(struct perf_cpu_map *map, int nr_cpus); 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_cistatic inline refcount_t *perf_cpu_map__refcnt(struct perf_cpu_map *map) 3562306a36Sopenharmony_ci{ 3662306a36Sopenharmony_ci return &RC_CHK_ACCESS(map)->refcnt; 3762306a36Sopenharmony_ci} 3862306a36Sopenharmony_ci#endif /* __LIBPERF_INTERNAL_CPUMAP_H */ 39