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