1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __LIBPERF_INTERNAL_CPUMAP_H 3 #define __LIBPERF_INTERNAL_CPUMAP_H 4 5 #include <linux/refcount.h> 6 #include <perf/cpumap.h> 7 8 /** 9 * A sized, reference counted, sorted array of integers representing CPU 10 * numbers. This is commonly used to capture which CPUs a PMU is associated 11 * with. The indices into the cpumap are frequently used as they avoid having 12 * gaps if CPU numbers were used. For events associated with a pid, rather than 13 * a CPU, a single dummy map with an entry of -1 is used. 14 */ 15 struct perf_cpu_map { 16 refcount_t refcnt; 17 /** Length of the map array. */ 18 int nr; 19 /** The CPU values. */ 20 struct perf_cpu map[]; 21 }; 22 23 #ifndef MAX_NR_CPUS 24 #define MAX_NR_CPUS 2048 25 #endif 26 27 int perf_cpu_map__idx(const struct perf_cpu_map *cpus, struct perf_cpu cpu); 28 bool perf_cpu_map__is_subset(const struct perf_cpu_map *a, const struct perf_cpu_map *b); 29 30 #endif /* __LIBPERF_INTERNAL_CPUMAP_H */ 31