diff options
Diffstat (limited to 'tools/lib/perf/include/internal/cpumap.h')
| -rw-r--r-- | tools/lib/perf/include/internal/cpumap.h | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/tools/lib/perf/include/internal/cpumap.h b/tools/lib/perf/include/internal/cpumap.h index 840d4032587b..e2be2d17c32b 100644 --- a/tools/lib/perf/include/internal/cpumap.h +++ b/tools/lib/perf/include/internal/cpumap.h @@ -3,17 +3,32 @@ #define __LIBPERF_INTERNAL_CPUMAP_H #include <linux/refcount.h> +#include <perf/cpumap.h> +#include <internal/rc_check.h> -struct perf_cpu_map { +/** + * 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; - int map[]; + /** The CPU values. */ + struct perf_cpu map[]; }; -#ifndef MAX_NR_CPUS -#define MAX_NR_CPUS 2048 -#endif +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); -int perf_cpu_map__idx(struct perf_cpu_map *cpus, int cpu); +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 */ |