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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef __CGROUP_H__3#define __CGROUP_H__4 5#include <linux/compiler.h>6#include <linux/refcount.h>7#include <linux/rbtree.h>8#include "util/env.h"9 10struct option;11 12struct cgroup {13 struct rb_node node;14 u64 id;15 char *name;16 int fd;17 refcount_t refcnt;18};19 20extern int nr_cgroups; /* number of explicit cgroups defined */21extern bool cgrp_event_expanded;22 23struct cgroup *cgroup__get(struct cgroup *cgroup);24void cgroup__put(struct cgroup *cgroup);25 26struct evlist;27struct rblist;28 29struct cgroup *cgroup__new(const char *name, bool do_open);30struct cgroup *evlist__findnew_cgroup(struct evlist *evlist, const char *name);31int evlist__expand_cgroup(struct evlist *evlist, const char *cgroups,32 struct rblist *metric_events, bool open_cgroup);33 34void evlist__set_default_cgroup(struct evlist *evlist, struct cgroup *cgroup);35 36int parse_cgroups(const struct option *opt, const char *str, int unset);37 38struct cgroup *cgroup__findnew(struct perf_env *env, uint64_t id,39 const char *path);40struct cgroup *cgroup__find(struct perf_env *env, uint64_t id);41struct cgroup *__cgroup__find(struct rb_root *root, uint64_t id);42 43void perf_env__purge_cgroups(struct perf_env *env);44 45#ifdef HAVE_FILE_HANDLE46int read_cgroup_id(struct cgroup *cgrp);47#else48static inline int read_cgroup_id(struct cgroup *cgrp __maybe_unused)49{50 return -1;51}52#endif /* HAVE_FILE_HANDLE */53 54/* read all cgroups in the system and save them in the rbtree */55void read_all_cgroups(struct rb_root *root);56 57int cgroup_is_v2(const char *subsys);58 59#endif /* __CGROUP_H__ */60