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 */
15struct 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
27int perf_cpu_map__idx(const struct perf_cpu_map *cpus, struct perf_cpu cpu);
28bool perf_cpu_map__is_subset(const struct perf_cpu_map *a, const struct perf_cpu_map *b);
29
30#endif /* __LIBPERF_INTERNAL_CPUMAP_H */