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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LIBPERF_CPUMAP_H
#define __LIBPERF_CPUMAP_H
#include <perf/core.h>
#include <stdio.h>
#include <stdbool.h>
/** A wrapper around a CPU to avoid confusion with the perf_cpu_map's map's indices. */
struct perf_cpu {
int cpu;
};
struct perf_cache {
int cache_lvl;
int cache;
};
struct perf_cpu_map;
/**
* perf_cpu_map__new_any_cpu - a map with a singular "any CPU"/dummy -1 value.
*/
LIBPERF_API struct perf_cpu_map *perf_cpu_map__new_any_cpu(void);
/**
* perf_cpu_map__new_online_cpus - a map read from
* /sys/devices/system/cpu/online if
* available. If reading wasn't possible a map
* is created using the online processors
* assuming the first 'n' processors are all
* online.
*/
LIBPERF_API struct perf_cpu_map *perf_cpu_map__new_online_cpus(void);
/**
* perf_cpu_map__new - create a map from the given cpu_list such as "0-7". If no
* cpu_list argument is provided then
* perf_cpu_map__new_online_cpus is returned.
*/
LIBPERF_API struct perf_cpu_map *perf_cpu_map__new(const char *cpu_list);
LIBPERF_API struct perf_cpu_map *perf_cpu_map__read(FILE *file);
LIBPERF_API struct perf_cpu_map *perf_cpu_map__get(struct perf_cpu_map *map);
LIBPERF_API struct perf_cpu_map *perf_cpu_map__merge(struct perf_cpu_map *orig,
struct perf_cpu_map *other);
LIBPERF_API struct perf_cpu_map *perf_cpu_map__intersect(struct perf_cpu_map *orig,
struct perf_cpu_map *other);
LIBPERF_API void perf_cpu_map__put(struct perf_cpu_map *map);
/**
* perf_cpu_map__cpu - get the CPU value at the given index. Returns -1 if index
* is invalid.
*/
LIBPERF_API struct perf_cpu perf_cpu_map__cpu(const struct perf_cpu_map *cpus, int idx);
/**
* perf_cpu_map__nr - for an empty map returns 1, as perf_cpu_map__cpu returns a
* cpu of -1 for an invalid index, this makes an empty map
* look like it contains the "any CPU"/dummy value. Otherwise
* the result is the number CPUs in the map plus one if the
* "any CPU"/dummy value is present.
*/
LIBPERF_API int perf_cpu_map__nr(const struct perf_cpu_map *cpus);
/**
* perf_cpu_map__has_any_cpu_or_is_empty - is map either empty or has the "any CPU"/dummy value.
*/
LIBPERF_API bool perf_cpu_map__has_any_cpu_or_is_empty(const struct perf_cpu_map *map);
LIBPERF_API struct perf_cpu perf_cpu_map__max(const struct perf_cpu_map *map);
LIBPERF_API bool perf_cpu_map__has(const struct perf_cpu_map *map, struct perf_cpu cpu);
LIBPERF_API bool perf_cpu_map__equal(const struct perf_cpu_map *lhs,
const struct perf_cpu_map *rhs);
/**
* perf_cpu_map__any_cpu - Does the map contain the "any CPU"/dummy -1 value?
*/
LIBPERF_API bool perf_cpu_map__has_any_cpu(const struct perf_cpu_map *map);
#define perf_cpu_map__for_each_cpu(cpu, idx, cpus) \
for ((idx) = 0, (cpu) = perf_cpu_map__cpu(cpus, idx); \
(idx) < perf_cpu_map__nr(cpus); \
(idx)++, (cpu) = perf_cpu_map__cpu(cpus, idx))
#define perf_cpu_map__for_each_cpu_skip_any(_cpu, idx, cpus) \
for ((idx) = 0, (_cpu) = perf_cpu_map__cpu(cpus, idx); \
(idx) < perf_cpu_map__nr(cpus); \
(idx)++, (_cpu) = perf_cpu_map__cpu(cpus, idx)) \
if ((_cpu).cpu != -1)
#define perf_cpu_map__for_each_idx(idx, cpus) \
for ((idx) = 0; (idx) < perf_cpu_map__nr(cpus); (idx)++)
#endif /* __LIBPERF_CPUMAP_H */
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