LXR linux/tools/perf/util/cgroup.h

   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 *evlist__findnew_cgroup(struct evlist *evlist, const char *name);
  30int evlist__expand_cgroup(struct evlist *evlist, const char *cgroups,
  31                          struct rblist *metric_events, bool open_cgroup);
  32
  33void evlist__set_default_cgroup(struct evlist *evlist, struct cgroup *cgroup);
  34
  35int parse_cgroups(const struct option *opt, const char *str, int unset);
  36
  37struct cgroup *cgroup__findnew(struct perf_env *env, uint64_t id,
  38                               const char *path);
  39struct cgroup *cgroup__find(struct perf_env *env, uint64_t id);
  40
  41void perf_env__purge_cgroups(struct perf_env *env);
  42
  43#ifdef HAVE_FILE_HANDLE
  44int read_cgroup_id(struct cgroup *cgrp);
  45#else
  46static inline int read_cgroup_id(struct cgroup *cgrp __maybe_unused)
  47{
  48        return -1;
  49}
  50#endif  /* HAVE_FILE_HANDLE */
  51
  52int cgroup_is_v2(const char *subsys);
  53
  54#endif /* __CGROUP_H__ */
  55