diff --git a/Documentation/cgroup-v2.txt b/Documentation/cgroup-v2.txt
index 0bbdc720dd7c..779211fbb69f 100644
--- a/Documentation/cgroup-v2.txt
+++ b/Documentation/cgroup-v2.txt
@@ -886,15 +886,6 @@ All cgroup core files are prefixed with "cgroup."
 		A dying cgroup can consume system resources not exceeding
 		limits, which were active at the moment of cgroup deletion.
 
-	  cpu.usage_usec
-		CPU time consumed in the subtree.
-
-	  cpu.user_usec
-		User CPU time consumed in the subtree.
-
-	  cpu.system_usec
-		System CPU time consumed in the subtree.
-
 
 Controllers
 ===========
@@ -915,12 +906,16 @@ All time durations are in microseconds.
 
   cpu.stat
 	A read-only flat-keyed file which exists on non-root cgroups.
+	This file exists whether the controller is enabled or not.
 
-	It reports the following six stats:
+	It always reports the following three stats:
 
 	- usage_usec
 	- user_usec
 	- system_usec
+
+	and the following three when the controller is enabled:
+
 	- nr_periods
 	- nr_throttled
 	- throttled_usec
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
index 3e55bbd31ad1..ada6df7b1f55 100644
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -569,6 +569,8 @@ struct cgroup_subsys {
 	void (*css_released)(struct cgroup_subsys_state *css);
 	void (*css_free)(struct cgroup_subsys_state *css);
 	void (*css_reset)(struct cgroup_subsys_state *css);
+	int (*css_extra_stat_show)(struct seq_file *seq,
+				   struct cgroup_subsys_state *css);
 
 	int (*can_attach)(struct cgroup_taskset *tset);
 	void (*cancel_attach)(struct cgroup_taskset *tset);
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 328a70ce0e23..03cad08b09d1 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -703,8 +703,6 @@ static inline void cpuacct_account_field(struct task_struct *tsk, int index,
 					 u64 val) {}
 #endif
 
-void cgroup_stat_show_cputime(struct seq_file *seq, const char *prefix);
-
 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);
diff --git a/kernel/cgroup/cgroup-internal.h b/kernel/cgroup/cgroup-internal.h
index fa642c99586a..4dc317090920 100644
--- a/kernel/cgroup/cgroup-internal.h
+++ b/kernel/cgroup/cgroup-internal.h
@@ -205,6 +205,7 @@ int cgroup_task_count(const struct cgroup *cgrp);
 void cgroup_stat_flush(struct cgroup *cgrp);
 int cgroup_stat_init(struct cgroup *cgrp);
 void cgroup_stat_exit(struct cgroup *cgrp);
+void cgroup_stat_show_cputime(struct seq_file *seq);
 void cgroup_stat_boot(void);
 
 /*
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 7975b20f1fd1..d9773e49a1b4 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -463,6 +463,28 @@ static struct cgroup_subsys_state *cgroup_css(struct cgroup *cgrp,
 		return &cgrp->self;
 }
 
+/**
+ * cgroup_tryget_css - try to get a cgroup's css for the specified subsystem
+ * @cgrp: the cgroup of interest
+ * @ss: the subsystem of interest
+ *
+ * Find and get @cgrp's css assocaited with @ss.  If the css doesn't exist
+ * or is offline, %NULL is returned.
+ */
+static struct cgroup_subsys_state *cgroup_tryget_css(struct cgroup *cgrp,
+						     struct cgroup_subsys *ss)
+{
+	struct cgroup_subsys_state *css;
+
+	rcu_read_lock();
+	css = cgroup_css(cgrp, ss);
+	if (!css || !css_tryget_online(css))
+		css = NULL;
+	rcu_read_unlock();
+
+	return css;
+}
+
 /**
  * cgroup_e_css - obtain a cgroup's effective css for the specified subsystem
  * @cgrp: the cgroup of interest
@@ -3311,11 +3333,40 @@ static int cgroup_stat_show(struct seq_file *seq, void *v)
 	seq_printf(seq, "nr_dying_descendants %d\n",
 		   cgroup->nr_dying_descendants);
 
-	cgroup_stat_show_cputime(seq, "cpu.");
-
 	return 0;
 }
 
+static int __maybe_unused cgroup_extra_stat_show(struct seq_file *seq,
+						 struct cgroup *cgrp, int ssid)
+{
+	struct cgroup_subsys *ss = cgroup_subsys[ssid];
+	struct cgroup_subsys_state *css;
+	int ret;
+
+	if (!ss->css_extra_stat_show)
+		return 0;
+
+	css = cgroup_tryget_css(cgrp, ss);
+	if (!css)
+		return 0;
+
+	ret = ss->css_extra_stat_show(seq, css);
+	css_put(css);
+	return ret;
+}
+
+static int cpu_stat_show(struct seq_file *seq, void *v)
+{
+	struct cgroup *cgrp = seq_css(seq)->cgroup;
+	int ret = 0;
+
+	cgroup_stat_show_cputime(seq);
+#ifdef CONFIG_CGROUP_SCHED
+	ret = cgroup_extra_stat_show(seq, cgrp, cpu_cgrp_id);
+#endif
+	return ret;
+}
+
 static int cgroup_file_open(struct kernfs_open_file *of)
 {
 	struct cftype *cft = of->kn->priv;
@@ -4423,6 +4474,11 @@ static struct cftype cgroup_base_files[] = {
 		.name = "cgroup.stat",
 		.seq_show = cgroup_stat_show,
 	},
+	{
+		.name = "cpu.stat",
+		.flags = CFTYPE_NOT_ON_ROOT,
+		.seq_show = cpu_stat_show,
+	},
 	{ }	/* terminate */
 };
 
diff --git a/kernel/cgroup/stat.c b/kernel/cgroup/stat.c
index 9cce79e89320..133b465691d6 100644
--- a/kernel/cgroup/stat.c
+++ b/kernel/cgroup/stat.c
@@ -256,7 +256,7 @@ void __cgroup_account_cputime_field(struct cgroup *cgrp,
 	cgroup_cpu_stat_account_end(cgrp, cstat);
 }
 
-void cgroup_stat_show_cputime(struct seq_file *seq, const char *prefix)
+void cgroup_stat_show_cputime(struct seq_file *seq)
 {
 	struct cgroup *cgrp = seq_css(seq)->cgroup;
 	u64 usage, utime, stime;
@@ -278,10 +278,10 @@ void cgroup_stat_show_cputime(struct seq_file *seq, const char *prefix)
 	do_div(utime, NSEC_PER_USEC);
 	do_div(stime, NSEC_PER_USEC);
 
-	seq_printf(seq, "%susage_usec %llu\n"
-		   "%suser_usec %llu\n"
-		   "%ssystem_usec %llu\n",
-		   prefix, usage, prefix, utime, prefix, stime);
+	seq_printf(seq, "usage_usec %llu\n"
+		   "user_usec %llu\n"
+		   "system_usec %llu\n",
+		   usage, utime, stime);
 }
 
 int cgroup_stat_init(struct cgroup *cgrp)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index ad255162a830..0b3eec389552 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6678,13 +6678,12 @@ static struct cftype cpu_legacy_files[] = {
 	{ }	/* Terminate */
 };
 
-static int cpu_stat_show(struct seq_file *sf, void *v)
+static int cpu_extra_stat_show(struct seq_file *sf,
+			       struct cgroup_subsys_state *css)
 {
-	cgroup_stat_show_cputime(sf, "");
-
 #ifdef CONFIG_CFS_BANDWIDTH
 	{
-		struct task_group *tg = css_tg(seq_css(sf));
+		struct task_group *tg = css_tg(css);
 		struct cfs_bandwidth *cfs_b = &tg->cfs_bandwidth;
 		u64 throttled_usec;
 
@@ -6817,11 +6816,6 @@ static ssize_t cpu_max_write(struct kernfs_open_file *of,
 #endif
 
 static struct cftype cpu_files[] = {
-	{
-		.name = "stat",
-		.flags = CFTYPE_NOT_ON_ROOT,
-		.seq_show = cpu_stat_show,
-	},
 #ifdef CONFIG_FAIR_GROUP_SCHED
 	{
 		.name = "weight",
@@ -6852,6 +6846,7 @@ struct cgroup_subsys cpu_cgrp_subsys = {
 	.css_online	= cpu_cgroup_css_online,
 	.css_released	= cpu_cgroup_css_released,
 	.css_free	= cpu_cgroup_css_free,
+	.css_extra_stat_show = cpu_extra_stat_show,
 	.fork		= cpu_cgroup_fork,
 	.can_attach	= cpu_cgroup_can_attach,
 	.attach		= cpu_cgroup_attach,