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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LIBPERF_INTERNAL_CPUMAP_H
#define __LIBPERF_INTERNAL_CPUMAP_H
#include <linux/refcount.h>
#include <perf/cpumap.h>
#include <internal/rc_check.h>
/**
* A sized, reference counted, sorted array of integers representing CPU
* numbers. This is commonly used to capture which CPUs a PMU is associated
* with. The indices into the cpumap are frequently used as they avoid having
* gaps if CPU numbers were used. For events associated with a pid, rather than
* a CPU, a single dummy map with an entry of -1 is used.
*/
DECLARE_RC_STRUCT(perf_cpu_map) {
refcount_t refcnt;
/** Length of the map array. */
int nr;
/** The CPU values. */
struct perf_cpu map[];
};
struct perf_cpu_map *perf_cpu_map__alloc(int nr_cpus);
int perf_cpu_map__idx(const struct perf_cpu_map *cpus, struct perf_cpu cpu);
bool perf_cpu_map__is_subset(const struct perf_cpu_map *a, const struct perf_cpu_map *b);
void perf_cpu_map__set_nr(struct perf_cpu_map *map, int nr_cpus);
static inline refcount_t *perf_cpu_map__refcnt(struct perf_cpu_map *map)
{
return &RC_CHK_ACCESS(map)->refcnt;
}
#endif /* __LIBPERF_INTERNAL_CPUMAP_H */