35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
/* 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 */
|