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 10 struct option; 11 12 struct cgroup { 13 struct rb_node node; 14 u64 id; 15 char *name; 16 int fd; 17 refcount_t refcnt; 18 }; 19 20 extern int nr_cgroups; /* number of explicit cgroups defined */ 21 extern bool cgrp_event_expanded; 22 23 struct cgroup *cgroup__get(struct cgroup *cgroup); 24 void cgroup__put(struct cgroup *cgroup); 25 26 struct evlist; 27 struct rblist; 28 29 struct cgroup *evlist__findnew_cgroup(struct evlist *evlist, const char *name); 30 int evlist__expand_cgroup(struct evlist *evlist, const char *cgroups, 31 struct rblist *metric_events, bool open_cgroup); 32 33 void evlist__set_default_cgroup(struct evlist *evlist, struct cgroup *cgroup); 34 35 int parse_cgroups(const struct option *opt, const char *str, int unset); 36 37 struct cgroup *cgroup__findnew(struct perf_env *env, uint64_t id, 38 const char *path); 39 struct cgroup *cgroup__find(struct perf_env *env, uint64_t id); 40 41 void perf_env__purge_cgroups(struct perf_env *env); 42 43 #ifdef HAVE_FILE_HANDLE 44 int read_cgroup_id(struct cgroup *cgrp); 45 #else 46 static inline int read_cgroup_id(struct cgroup *cgrp __maybe_unused) 47 { 48 return -1; 49 } 50 #endif /* HAVE_FILE_HANDLE */ 51 52 int cgroup_is_v2(const char *subsys); 53 54 #endif /* __CGROUP_H__ */ 55