+/*
+ * Basic resource stats.
+ */
+#ifdef CONFIG_CGROUPS
+
+#ifdef CONFIG_CGROUP_CPUACCT
+void cpuacct_charge(struct task_struct *tsk, u64 cputime);
+void cpuacct_account_field(struct task_struct *tsk, int index, u64 val);
+#else
+static inline void cpuacct_charge(struct task_struct *tsk, u64 cputime) {}
+static inline void cpuacct_account_field(struct task_struct *tsk, int index,
+ u64 val) {}
+#endif
+
+void __cgroup_account_cputime(struct cgroup *cgrp, u64 delta_exec);
+void __cgroup_account_cputime_field(struct cgroup *cgrp,
+ enum cpu_usage_stat index, u64 delta_exec);
+
+static inline void cgroup_account_cputime(struct task_struct *task,
+ u64 delta_exec)
+{
+ struct cgroup *cgrp;
+
+ cpuacct_charge(task, delta_exec);
+
+ rcu_read_lock();
+ cgrp = task_dfl_cgroup(task);
+ if (cgroup_parent(cgrp))
+ __cgroup_account_cputime(cgrp, delta_exec);
+ rcu_read_unlock();
+}
+
+static inline void cgroup_account_cputime_field(struct task_struct *task,
+ enum cpu_usage_stat index,
+ u64 delta_exec)
+{
+ struct cgroup *cgrp;
+
+ cpuacct_account_field(task, index, delta_exec);
+
+ rcu_read_lock();
+ cgrp = task_dfl_cgroup(task);
+ if (cgroup_parent(cgrp))
+ __cgroup_account_cputime_field(cgrp, index, delta_exec);
+ rcu_read_unlock();
+}
+
+#else /* CONFIG_CGROUPS */
+
+static inline void cgroup_account_cputime(struct task_struct *task,
+ u64 delta_exec) {}
+static inline void cgroup_account_cputime_field(struct task_struct *task,
+ enum cpu_usage_stat index,
+ u64 delta_exec) {}
+
+#endif /* CONFIG_CGROUPS */
+