diff --git a/mm/percpu-internal.h b/mm/percpu-internal.h
index 10604dce806f5f..b6dc2290408840 100644
--- a/mm/percpu-internal.h
+++ b/mm/percpu-internal.h
@@ -5,25 +5,6 @@
 #include <linux/types.h>
 #include <linux/percpu.h>
 
-/*
- * There are two chunk types: root and memcg-aware.
- * Chunks of each type have separate slots list.
- *
- * Memcg-aware chunks have an attached vector of obj_cgroup pointers, which is
- * used to store memcg membership data of a percpu object.  Obj_cgroups are
- * ref-counted pointers to a memory cgroup with an ability to switch dynamically
- * to the parent memory cgroup.  This allows to reclaim a deleted memory cgroup
- * without reclaiming of all outstanding objects, which hold a reference at it.
- */
-enum pcpu_chunk_type {
-	PCPU_CHUNK_ROOT,
-#ifdef CONFIG_MEMCG_KMEM
-	PCPU_CHUNK_MEMCG,
-#endif
-	PCPU_NR_CHUNK_TYPES,
-	PCPU_FAIL_ALLOC = PCPU_NR_CHUNK_TYPES
-};
-
 /*
  * pcpu_block_md is the metadata block struct.
  * Each chunk's bitmap is split into a number of full blocks.
@@ -91,7 +72,7 @@ extern struct list_head *pcpu_chunk_lists;
 extern int pcpu_nr_slots;
 extern int pcpu_sidelined_slot;
 extern int pcpu_to_depopulate_slot;
-extern int pcpu_nr_empty_pop_pages[];
+extern int pcpu_nr_empty_pop_pages;
 
 extern struct pcpu_chunk *pcpu_first_chunk;
 extern struct pcpu_chunk *pcpu_reserved_chunk;
@@ -132,37 +113,6 @@ static inline int pcpu_chunk_map_bits(struct pcpu_chunk *chunk)
 	return pcpu_nr_pages_to_map_bits(chunk->nr_pages);
 }
 
-#ifdef CONFIG_MEMCG_KMEM
-static inline enum pcpu_chunk_type pcpu_chunk_type(struct pcpu_chunk *chunk)
-{
-	if (chunk->obj_cgroups)
-		return PCPU_CHUNK_MEMCG;
-	return PCPU_CHUNK_ROOT;
-}
-
-static inline bool pcpu_is_memcg_chunk(enum pcpu_chunk_type chunk_type)
-{
-	return chunk_type == PCPU_CHUNK_MEMCG;
-}
-
-#else
-static inline enum pcpu_chunk_type pcpu_chunk_type(struct pcpu_chunk *chunk)
-{
-	return PCPU_CHUNK_ROOT;
-}
-
-static inline bool pcpu_is_memcg_chunk(enum pcpu_chunk_type chunk_type)
-{
-	return false;
-}
-#endif
-
-static inline struct list_head *pcpu_chunk_list(enum pcpu_chunk_type chunk_type)
-{
-	return &pcpu_chunk_lists[pcpu_nr_slots *
-				 pcpu_is_memcg_chunk(chunk_type)];
-}
-
 #ifdef CONFIG_PERCPU_STATS
 
 #include <linux/spinlock.h>
diff --git a/mm/percpu-km.c b/mm/percpu-km.c
index c84a9f781a6c51..c9d529dc7651ff 100644
--- a/mm/percpu-km.c
+++ b/mm/percpu-km.c
@@ -44,8 +44,7 @@ static void pcpu_depopulate_chunk(struct pcpu_chunk *chunk,
 	/* nada */
 }
 
-static struct pcpu_chunk *pcpu_create_chunk(enum pcpu_chunk_type type,
-					    gfp_t gfp)
+static struct pcpu_chunk *pcpu_create_chunk(gfp_t gfp)
 {
 	const int nr_pages = pcpu_group_sizes[0] >> PAGE_SHIFT;
 	struct pcpu_chunk *chunk;
@@ -53,7 +52,7 @@ static struct pcpu_chunk *pcpu_create_chunk(enum pcpu_chunk_type type,
 	unsigned long flags;
 	int i;
 
-	chunk = pcpu_alloc_chunk(type, gfp);
+	chunk = pcpu_alloc_chunk(gfp);
 	if (!chunk)
 		return NULL;
 
diff --git a/mm/percpu-stats.c b/mm/percpu-stats.c
index 2125981acfb9cf..c6bd092ff7a35e 100644
--- a/mm/percpu-stats.c
+++ b/mm/percpu-stats.c
@@ -34,15 +34,11 @@ static int find_max_nr_alloc(void)
 {
 	struct pcpu_chunk *chunk;
 	int slot, max_nr_alloc;
-	enum pcpu_chunk_type type;
 
 	max_nr_alloc = 0;
-	for (type = 0; type < PCPU_NR_CHUNK_TYPES; type++)
-		for (slot = 0; slot < pcpu_nr_slots; slot++)
-			list_for_each_entry(chunk, &pcpu_chunk_list(type)[slot],
-					    list)
-				max_nr_alloc = max(max_nr_alloc,
-						   chunk->nr_alloc);
+	for (slot = 0; slot < pcpu_nr_slots; slot++)
+		list_for_each_entry(chunk, &pcpu_chunk_lists[slot], list)
+			max_nr_alloc = max(max_nr_alloc, chunk->nr_alloc);
 
 	return max_nr_alloc;
 }
@@ -133,9 +129,6 @@ static void chunk_map_stats(struct seq_file *m, struct pcpu_chunk *chunk,
 	P("cur_min_alloc", cur_min_alloc);
 	P("cur_med_alloc", cur_med_alloc);
 	P("cur_max_alloc", cur_max_alloc);
-#ifdef CONFIG_MEMCG_KMEM
-	P("memcg_aware", pcpu_is_memcg_chunk(pcpu_chunk_type(chunk)));
-#endif
 	seq_putc(m, '\n');
 }
 
@@ -144,8 +137,6 @@ static int percpu_stats_show(struct seq_file *m, void *v)
 	struct pcpu_chunk *chunk;
 	int slot, max_nr_alloc;
 	int *buffer;
-	enum pcpu_chunk_type type;
-	int nr_empty_pop_pages;
 
 alloc_buffer:
 	spin_lock_irq(&pcpu_lock);
@@ -166,10 +157,6 @@ static int percpu_stats_show(struct seq_file *m, void *v)
 		goto alloc_buffer;
 	}
 
-	nr_empty_pop_pages = 0;
-	for (type = 0; type < PCPU_NR_CHUNK_TYPES; type++)
-		nr_empty_pop_pages += pcpu_nr_empty_pop_pages[type];
-
 #define PL(X)								\
 	seq_printf(m, "  %-20s: %12lld\n", #X, (long long int)pcpu_stats_ai.X)
 
@@ -201,7 +188,7 @@ static int percpu_stats_show(struct seq_file *m, void *v)
 	PU(nr_max_chunks);
 	PU(min_alloc_size);
 	PU(max_alloc_size);
-	P("empty_pop_pages", nr_empty_pop_pages);
+	P("empty_pop_pages", pcpu_nr_empty_pop_pages);
 	seq_putc(m, '\n');
 
 #undef PU
@@ -215,20 +202,17 @@ static int percpu_stats_show(struct seq_file *m, void *v)
 		chunk_map_stats(m, pcpu_reserved_chunk, buffer);
 	}
 
-	for (type = 0; type < PCPU_NR_CHUNK_TYPES; type++) {
-		for (slot = 0; slot < pcpu_nr_slots; slot++) {
-			list_for_each_entry(chunk, &pcpu_chunk_list(type)[slot],
-					    list) {
-				if (chunk == pcpu_first_chunk)
-					seq_puts(m, "Chunk: <- First Chunk\n");
-				else if (slot == pcpu_to_depopulate_slot)
-					seq_puts(m, "Chunk (to_depopulate)\n");
-				else if (slot == pcpu_sidelined_slot)
-					seq_puts(m, "Chunk (sidelined):\n");
-				else
-					seq_puts(m, "Chunk:\n");
-				chunk_map_stats(m, chunk, buffer);
-			}
+	for (slot = 0; slot < pcpu_nr_slots; slot++) {
+		list_for_each_entry(chunk, &pcpu_chunk_lists[slot], list) {
+			if (chunk == pcpu_first_chunk)
+				seq_puts(m, "Chunk: <- First Chunk\n");
+			else if (slot == pcpu_to_depopulate_slot)
+				seq_puts(m, "Chunk (to_depopulate)\n");
+			else if (slot == pcpu_sidelined_slot)
+				seq_puts(m, "Chunk (sidelined):\n");
+			else
+				seq_puts(m, "Chunk:\n");
+			chunk_map_stats(m, chunk, buffer);
 		}
 	}
 
diff --git a/mm/percpu-vm.c b/mm/percpu-vm.c
index c75f6f24f2d5a0..057546f5555e6d 100644
--- a/mm/percpu-vm.c
+++ b/mm/percpu-vm.c
@@ -328,13 +328,12 @@ static void pcpu_depopulate_chunk(struct pcpu_chunk *chunk,
 	pcpu_free_pages(chunk, pages, page_start, page_end);
 }
 
-static struct pcpu_chunk *pcpu_create_chunk(enum pcpu_chunk_type type,
-					    gfp_t gfp)
+static struct pcpu_chunk *pcpu_create_chunk(gfp_t gfp)
 {
 	struct pcpu_chunk *chunk;
 	struct vm_struct **vms;
 
-	chunk = pcpu_alloc_chunk(type, gfp);
+	chunk = pcpu_alloc_chunk(gfp);
 	if (!chunk)
 		return NULL;
 
@@ -403,7 +402,7 @@ static bool pcpu_should_reclaim_chunk(struct pcpu_chunk *chunk)
 	 * chunk, move it to the to_depopulate list.
 	 */
 	return ((chunk->isolated && chunk->nr_empty_pop_pages) ||
-		(pcpu_nr_empty_pop_pages[pcpu_chunk_type(chunk)] >
-		 PCPU_EMPTY_POP_PAGES_HIGH + chunk->nr_empty_pop_pages &&
-		chunk->nr_empty_pop_pages >= chunk->nr_pages / 4));
+		(pcpu_nr_empty_pop_pages >
+		 (PCPU_EMPTY_POP_PAGES_HIGH + chunk->nr_empty_pop_pages) &&
+		 chunk->nr_empty_pop_pages >= chunk->nr_pages / 4));
 }
diff --git a/mm/percpu.c b/mm/percpu.c
index 3135e56ce8d4c1..e7b9ca82e9aa89 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -179,10 +179,10 @@ struct list_head *pcpu_chunk_lists __ro_after_init; /* chunk list slots */
 static LIST_HEAD(pcpu_map_extend_chunks);
 
 /*
- * The number of empty populated pages by chunk type, protected by pcpu_lock.
+ * The number of empty populated pages, protected by pcpu_lock.
  * The reserved chunk doesn't contribute to the count.
  */
-int pcpu_nr_empty_pop_pages[PCPU_NR_CHUNK_TYPES];
+int pcpu_nr_empty_pop_pages;
 
 /*
  * The number of populated pages in use by the allocator, protected by
@@ -532,13 +532,10 @@ static void __pcpu_chunk_move(struct pcpu_chunk *chunk, int slot,
 			      bool move_front)
 {
 	if (chunk != pcpu_reserved_chunk) {
-		struct list_head *pcpu_slot;
-
-		pcpu_slot = pcpu_chunk_list(pcpu_chunk_type(chunk));
 		if (move_front)
-			list_move(&chunk->list, &pcpu_slot[slot]);
+			list_move(&chunk->list, &pcpu_chunk_lists[slot]);
 		else
-			list_move_tail(&chunk->list, &pcpu_slot[slot]);
+			list_move_tail(&chunk->list, &pcpu_chunk_lists[slot]);
 	}
 }
 
@@ -574,27 +571,22 @@ static void pcpu_chunk_relocate(struct pcpu_chunk *chunk, int oslot)
 
 static void pcpu_isolate_chunk(struct pcpu_chunk *chunk)
 {
-	enum pcpu_chunk_type type = pcpu_chunk_type(chunk);
-	struct list_head *pcpu_slot = pcpu_chunk_list(type);
-
 	lockdep_assert_held(&pcpu_lock);
 
 	if (!chunk->isolated) {
 		chunk->isolated = true;
-		pcpu_nr_empty_pop_pages[type] -= chunk->nr_empty_pop_pages;
+		pcpu_nr_empty_pop_pages -= chunk->nr_empty_pop_pages;
 	}
-	list_move(&chunk->list, &pcpu_slot[pcpu_to_depopulate_slot]);
+	list_move(&chunk->list, &pcpu_chunk_lists[pcpu_to_depopulate_slot]);
 }
 
 static void pcpu_reintegrate_chunk(struct pcpu_chunk *chunk)
 {
-	enum pcpu_chunk_type type = pcpu_chunk_type(chunk);
-
 	lockdep_assert_held(&pcpu_lock);
 
 	if (chunk->isolated) {
 		chunk->isolated = false;
-		pcpu_nr_empty_pop_pages[type] += chunk->nr_empty_pop_pages;
+		pcpu_nr_empty_pop_pages += chunk->nr_empty_pop_pages;
 		pcpu_chunk_relocate(chunk, -1);
 	}
 }
@@ -612,7 +604,7 @@ static inline void pcpu_update_empty_pages(struct pcpu_chunk *chunk, int nr)
 {
 	chunk->nr_empty_pop_pages += nr;
 	if (chunk != pcpu_reserved_chunk && !chunk->isolated)
-		pcpu_nr_empty_pop_pages[pcpu_chunk_type(chunk)] += nr;
+		pcpu_nr_empty_pop_pages += nr;
 }
 
 /*
@@ -1405,7 +1397,7 @@ static struct pcpu_chunk * __init pcpu_alloc_first_chunk(unsigned long tmp_addr,
 		      alloc_size);
 
 #ifdef CONFIG_MEMCG_KMEM
-	/* first chunk isn't memcg-aware */
+	/* first chunk is free to use */
 	chunk->obj_cgroups = NULL;
 #endif
 	pcpu_init_md_blocks(chunk);
@@ -1447,7 +1439,7 @@ static struct pcpu_chunk * __init pcpu_alloc_first_chunk(unsigned long tmp_addr,
 	return chunk;
 }
 
-static struct pcpu_chunk *pcpu_alloc_chunk(enum pcpu_chunk_type type, gfp_t gfp)
+static struct pcpu_chunk *pcpu_alloc_chunk(gfp_t gfp)
 {
 	struct pcpu_chunk *chunk;
 	int region_bits;
@@ -1476,7 +1468,7 @@ static struct pcpu_chunk *pcpu_alloc_chunk(enum pcpu_chunk_type type, gfp_t gfp)
 		goto md_blocks_fail;
 
 #ifdef CONFIG_MEMCG_KMEM
-	if (pcpu_is_memcg_chunk(type)) {
+	if (!mem_cgroup_kmem_disabled()) {
 		chunk->obj_cgroups =
 			pcpu_mem_zalloc(pcpu_chunk_map_bits(chunk) *
 					sizeof(struct obj_cgroup *), gfp);
@@ -1589,8 +1581,7 @@ static int pcpu_populate_chunk(struct pcpu_chunk *chunk,
 			       int page_start, int page_end, gfp_t gfp);
 static void pcpu_depopulate_chunk(struct pcpu_chunk *chunk,
 				  int page_start, int page_end);
-static struct pcpu_chunk *pcpu_create_chunk(enum pcpu_chunk_type type,
-					    gfp_t gfp);
+static struct pcpu_chunk *pcpu_create_chunk(gfp_t gfp);
 static void pcpu_destroy_chunk(struct pcpu_chunk *chunk);
 static struct page *pcpu_addr_to_page(void *addr);
 static int __init pcpu_verify_alloc_info(const struct pcpu_alloc_info *ai);
@@ -1633,25 +1624,25 @@ static struct pcpu_chunk *pcpu_chunk_addr_search(void *addr)
 }
 
 #ifdef CONFIG_MEMCG_KMEM
-static enum pcpu_chunk_type pcpu_memcg_pre_alloc_hook(size_t size, gfp_t gfp,
-						     struct obj_cgroup **objcgp)
+static bool pcpu_memcg_pre_alloc_hook(size_t size, gfp_t gfp,
+				      struct obj_cgroup **objcgp)
 {
 	struct obj_cgroup *objcg;
 
 	if (!memcg_kmem_enabled() || !(gfp & __GFP_ACCOUNT))
-		return PCPU_CHUNK_ROOT;
+		return true;
 
 	objcg = get_obj_cgroup_from_current();
 	if (!objcg)
-		return PCPU_CHUNK_ROOT;
+		return true;
 
 	if (obj_cgroup_charge(objcg, gfp, size * num_possible_cpus())) {
 		obj_cgroup_put(objcg);
-		return PCPU_FAIL_ALLOC;
+		return false;
 	}
 
 	*objcgp = objcg;
-	return PCPU_CHUNK_MEMCG;
+	return true;
 }
 
 static void pcpu_memcg_post_alloc_hook(struct obj_cgroup *objcg,
@@ -1661,7 +1652,7 @@ static void pcpu_memcg_post_alloc_hook(struct obj_cgroup *objcg,
 	if (!objcg)
 		return;
 
-	if (chunk) {
+	if (likely(chunk && chunk->obj_cgroups)) {
 		chunk->obj_cgroups[off >> PCPU_MIN_ALLOC_SHIFT] = objcg;
 
 		rcu_read_lock();
@@ -1678,10 +1669,12 @@ static void pcpu_memcg_free_hook(struct pcpu_chunk *chunk, int off, size_t size)
 {
 	struct obj_cgroup *objcg;
 
-	if (!pcpu_is_memcg_chunk(pcpu_chunk_type(chunk)))
+	if (unlikely(!chunk->obj_cgroups))
 		return;
 
 	objcg = chunk->obj_cgroups[off >> PCPU_MIN_ALLOC_SHIFT];
+	if (!objcg)
+		return;
 	chunk->obj_cgroups[off >> PCPU_MIN_ALLOC_SHIFT] = NULL;
 
 	obj_cgroup_uncharge(objcg, size * num_possible_cpus());
@@ -1695,10 +1688,10 @@ static void pcpu_memcg_free_hook(struct pcpu_chunk *chunk, int off, size_t size)
 }
 
 #else /* CONFIG_MEMCG_KMEM */
-static enum pcpu_chunk_type
+static bool
 pcpu_memcg_pre_alloc_hook(size_t size, gfp_t gfp, struct obj_cgroup **objcgp)
 {
-	return PCPU_CHUNK_ROOT;
+	return true;
 }
 
 static void pcpu_memcg_post_alloc_hook(struct obj_cgroup *objcg,
@@ -1733,8 +1726,6 @@ static void __percpu *pcpu_alloc(size_t size, size_t align, bool reserved,
 	gfp_t pcpu_gfp;
 	bool is_atomic;
 	bool do_warn;
-	enum pcpu_chunk_type type;
-	struct list_head *pcpu_slot;
 	struct obj_cgroup *objcg = NULL;
 	static int warn_limit = 10;
 	struct pcpu_chunk *chunk, *next;
@@ -1770,10 +1761,8 @@ static void __percpu *pcpu_alloc(size_t size, size_t align, bool reserved,
 		return NULL;
 	}
 
-	type = pcpu_memcg_pre_alloc_hook(size, gfp, &objcg);
-	if (unlikely(type == PCPU_FAIL_ALLOC))
+	if (unlikely(!pcpu_memcg_pre_alloc_hook(size, gfp, &objcg)))
 		return NULL;
-	pcpu_slot = pcpu_chunk_list(type);
 
 	if (!is_atomic) {
 		/*
@@ -1812,7 +1801,8 @@ static void __percpu *pcpu_alloc(size_t size, size_t align, bool reserved,
 restart:
 	/* search through normal chunks */
 	for (slot = pcpu_size_to_slot(size); slot <= pcpu_free_slot; slot++) {
-		list_for_each_entry_safe(chunk, next, &pcpu_slot[slot], list) {
+		list_for_each_entry_safe(chunk, next, &pcpu_chunk_lists[slot],
+					 list) {
 			off = pcpu_find_block_fit(chunk, bits, bit_align,
 						  is_atomic);
 			if (off < 0) {
@@ -1841,8 +1831,8 @@ static void __percpu *pcpu_alloc(size_t size, size_t align, bool reserved,
 		goto fail;
 	}
 
-	if (list_empty(&pcpu_slot[pcpu_free_slot])) {
-		chunk = pcpu_create_chunk(type, pcpu_gfp);
+	if (list_empty(&pcpu_chunk_lists[pcpu_free_slot])) {
+		chunk = pcpu_create_chunk(pcpu_gfp);
 		if (!chunk) {
 			err = "failed to allocate new chunk";
 			goto fail;
@@ -1886,7 +1876,7 @@ static void __percpu *pcpu_alloc(size_t size, size_t align, bool reserved,
 		mutex_unlock(&pcpu_alloc_mutex);
 	}
 
-	if (pcpu_nr_empty_pop_pages[type] < PCPU_EMPTY_POP_PAGES_LOW)
+	if (pcpu_nr_empty_pop_pages < PCPU_EMPTY_POP_PAGES_LOW)
 		pcpu_schedule_balance_work();
 
 	/* clear the areas and return address relative to base address */
@@ -1985,18 +1975,16 @@ void __percpu *__alloc_reserved_percpu(size_t size, size_t align)
 
 /**
  * pcpu_balance_free - manage the amount of free chunks
- * @type: chunk type
  * @empty_only: free chunks only if there are no populated pages
  *
  * If empty_only is %false, reclaim all fully free chunks regardless of the
  * number of populated pages.  Otherwise, only reclaim chunks that have no
  * populated pages.
  */
-static void pcpu_balance_free(enum pcpu_chunk_type type, bool empty_only)
+static void pcpu_balance_free(bool empty_only)
 {
 	LIST_HEAD(to_free);
-	struct list_head *pcpu_slot = pcpu_chunk_list(type);
-	struct list_head *free_head = &pcpu_slot[pcpu_free_slot];
+	struct list_head *free_head = &pcpu_chunk_lists[pcpu_free_slot];
 	struct pcpu_chunk *chunk, *next;
 
 	/*
@@ -2035,7 +2023,6 @@ static void pcpu_balance_free(enum pcpu_chunk_type type, bool empty_only)
 
 /**
  * pcpu_balance_populated - manage the amount of populated pages
- * @type: chunk type
  *
  * Maintain a certain amount of populated pages to satisfy atomic allocations.
  * It is possible that this is called when physical memory is scarce causing
@@ -2043,11 +2030,10 @@ static void pcpu_balance_free(enum pcpu_chunk_type type, bool empty_only)
  * allocation causes the failure as it is possible that requests can be
  * serviced from already backed regions.
  */
-static void pcpu_balance_populated(enum pcpu_chunk_type type)
+static void pcpu_balance_populated(void)
 {
 	/* gfp flags passed to underlying allocators */
 	const gfp_t gfp = GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN;
-	struct list_head *pcpu_slot = pcpu_chunk_list(type);
 	struct pcpu_chunk *chunk;
 	int slot, nr_to_pop, ret;
 
@@ -2068,7 +2054,7 @@ static void pcpu_balance_populated(enum pcpu_chunk_type type)
 		pcpu_atomic_alloc_failed = false;
 	} else {
 		nr_to_pop = clamp(PCPU_EMPTY_POP_PAGES_HIGH -
-				  pcpu_nr_empty_pop_pages[type],
+				  pcpu_nr_empty_pop_pages,
 				  0, PCPU_EMPTY_POP_PAGES_HIGH);
 	}
 
@@ -2079,7 +2065,7 @@ static void pcpu_balance_populated(enum pcpu_chunk_type type)
 			break;
 
 		spin_lock_irq(&pcpu_lock);
-		list_for_each_entry(chunk, &pcpu_slot[slot], list) {
+		list_for_each_entry(chunk, &pcpu_chunk_lists[slot], list) {
 			nr_unpop = chunk->nr_pages - chunk->nr_populated;
 			if (nr_unpop)
 				break;
@@ -2111,7 +2097,7 @@ static void pcpu_balance_populated(enum pcpu_chunk_type type)
 
 	if (nr_to_pop) {
 		/* ran out of chunks to populate, create a new one and retry */
-		chunk = pcpu_create_chunk(type, gfp);
+		chunk = pcpu_create_chunk(gfp);
 		if (chunk) {
 			spin_lock_irq(&pcpu_lock);
 			pcpu_chunk_relocate(chunk, -1);
@@ -2123,7 +2109,6 @@ static void pcpu_balance_populated(enum pcpu_chunk_type type)
 
 /**
  * pcpu_reclaim_populated - scan over to_depopulate chunks and free empty pages
- * @type: chunk type
  *
  * Scan over chunks in the depopulate list and try to release unused populated
  * pages back to the system.  Depopulated chunks are sidelined to prevent
@@ -2133,9 +2118,8 @@ static void pcpu_balance_populated(enum pcpu_chunk_type type)
  * Each chunk is scanned in the reverse order to keep populated pages close to
  * the beginning of the chunk.
  */
-static void pcpu_reclaim_populated(enum pcpu_chunk_type type)
+static void pcpu_reclaim_populated(void)
 {
-	struct list_head *pcpu_slot = pcpu_chunk_list(type);
 	struct pcpu_chunk *chunk;
 	struct pcpu_block_md *block;
 	int i, end;
@@ -2149,8 +2133,8 @@ static void pcpu_reclaim_populated(enum pcpu_chunk_type type)
 	 * other accessor is the free path which only returns area back to the
 	 * allocator not touching the populated bitmap.
 	 */
-	while (!list_empty(&pcpu_slot[pcpu_to_depopulate_slot])) {
-		chunk = list_first_entry(&pcpu_slot[pcpu_to_depopulate_slot],
+	while (!list_empty(&pcpu_chunk_lists[pcpu_to_depopulate_slot])) {
+		chunk = list_first_entry(&pcpu_chunk_lists[pcpu_to_depopulate_slot],
 					 struct pcpu_chunk, list);
 		WARN_ON(chunk->immutable);
 
@@ -2164,8 +2148,7 @@ static void pcpu_reclaim_populated(enum pcpu_chunk_type type)
 				break;
 
 			/* reintegrate chunk to prevent atomic alloc failures */
-			if (pcpu_nr_empty_pop_pages[type] <
-			    PCPU_EMPTY_POP_PAGES_HIGH) {
+			if (pcpu_nr_empty_pop_pages < PCPU_EMPTY_POP_PAGES_HIGH) {
 				pcpu_reintegrate_chunk(chunk);
 				goto restart;
 			}
@@ -2205,7 +2188,7 @@ static void pcpu_reclaim_populated(enum pcpu_chunk_type type)
 			pcpu_reintegrate_chunk(chunk);
 		else
 			list_move(&chunk->list,
-				  &pcpu_slot[pcpu_sidelined_slot]);
+				  &pcpu_chunk_lists[pcpu_sidelined_slot]);
 	}
 
 	spin_unlock_irq(&pcpu_lock);
@@ -2221,8 +2204,6 @@ static void pcpu_reclaim_populated(enum pcpu_chunk_type type)
  */
 static void pcpu_balance_workfn(struct work_struct *work)
 {
-	enum pcpu_chunk_type type;
-
 	/*
 	 * pcpu_balance_free() is called twice because the first time we may
 	 * trim pages in the active pcpu_nr_empty_pop_pages which may cause us
@@ -2230,14 +2211,12 @@ static void pcpu_balance_workfn(struct work_struct *work)
 	 * to move fully free chunks to the active list to be freed if
 	 * appropriate.
 	 */
-	for (type = 0; type < PCPU_NR_CHUNK_TYPES; type++) {
-		mutex_lock(&pcpu_alloc_mutex);
-		pcpu_balance_free(type, false);
-		pcpu_reclaim_populated(type);
-		pcpu_balance_populated(type);
-		pcpu_balance_free(type, true);
-		mutex_unlock(&pcpu_alloc_mutex);
-	}
+	mutex_lock(&pcpu_alloc_mutex);
+	pcpu_balance_free(false);
+	pcpu_reclaim_populated();
+	pcpu_balance_populated();
+	pcpu_balance_free(true);
+	mutex_unlock(&pcpu_alloc_mutex);
 }
 
 /**
@@ -2256,7 +2235,6 @@ void free_percpu(void __percpu *ptr)
 	unsigned long flags;
 	int size, off;
 	bool need_balance = false;
-	struct list_head *pcpu_slot;
 
 	if (!ptr)
 		return;
@@ -2272,8 +2250,6 @@ void free_percpu(void __percpu *ptr)
 
 	size = pcpu_free_area(chunk, off);
 
-	pcpu_slot = pcpu_chunk_list(pcpu_chunk_type(chunk));
-
 	pcpu_memcg_free_hook(chunk, off, size);
 
 	/*
@@ -2284,7 +2260,7 @@ void free_percpu(void __percpu *ptr)
 	if (!chunk->isolated && chunk->free_bytes == pcpu_unit_size) {
 		struct pcpu_chunk *pos;
 
-		list_for_each_entry(pos, &pcpu_slot[pcpu_free_slot], list)
+		list_for_each_entry(pos, &pcpu_chunk_lists[pcpu_free_slot], list)
 			if (pos != chunk) {
 				need_balance = true;
 				break;
@@ -2592,7 +2568,6 @@ void __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
 	int map_size;
 	unsigned long tmp_addr;
 	size_t alloc_size;
-	enum pcpu_chunk_type type;
 
 #define PCPU_SETUP_BUG_ON(cond)	do {					\
 	if (unlikely(cond)) {						\
@@ -2716,17 +2691,14 @@ void __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
 	pcpu_to_depopulate_slot = pcpu_free_slot + 1;
 	pcpu_nr_slots = pcpu_to_depopulate_slot + 1;
 	pcpu_chunk_lists = memblock_alloc(pcpu_nr_slots *
-					  sizeof(pcpu_chunk_lists[0]) *
-					  PCPU_NR_CHUNK_TYPES,
+					  sizeof(pcpu_chunk_lists[0]),
 					  SMP_CACHE_BYTES);
 	if (!pcpu_chunk_lists)
 		panic("%s: Failed to allocate %zu bytes\n", __func__,
-		      pcpu_nr_slots * sizeof(pcpu_chunk_lists[0]) *
-		      PCPU_NR_CHUNK_TYPES);
+		      pcpu_nr_slots * sizeof(pcpu_chunk_lists[0]));
 
-	for (type = 0; type < PCPU_NR_CHUNK_TYPES; type++)
-		for (i = 0; i < pcpu_nr_slots; i++)
-			INIT_LIST_HEAD(&pcpu_chunk_list(type)[i]);
+	for (i = 0; i < pcpu_nr_slots; i++)
+		INIT_LIST_HEAD(&pcpu_chunk_lists[i]);
 
 	/*
 	 * The end of the static region needs to be aligned with the
@@ -2763,7 +2735,7 @@ void __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
 
 	/* link the first chunk in */
 	pcpu_first_chunk = chunk;
-	pcpu_nr_empty_pop_pages[PCPU_CHUNK_ROOT] = pcpu_first_chunk->nr_empty_pop_pages;
+	pcpu_nr_empty_pop_pages = pcpu_first_chunk->nr_empty_pop_pages;
 	pcpu_chunk_relocate(pcpu_first_chunk, -1);
 
 	/* include all regions of the first chunk */