Adding upstream version 6.10.3.upstream/6.10.3

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 368 insertions, 220 deletions

diff --git a/mm/slub.c b/mm/slub.c
index 24f702afd4..4927edec6a 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -624,11 +624,21 @@ static void slub_set_cpu_partial(struct kmem_cache *s, unsigned int nr_objects)
 	nr_slabs = DIV_ROUND_UP(nr_objects * 2, oo_objects(s->oo));
 	s->cpu_partial_slabs = nr_slabs;
 }
+
+static inline unsigned int slub_get_cpu_partial(struct kmem_cache *s)
+{
+	return s->cpu_partial_slabs;
+}
 #else
 static inline void
 slub_set_cpu_partial(struct kmem_cache *s, unsigned int nr_objects)
 {
 }
+
+static inline unsigned int slub_get_cpu_partial(struct kmem_cache *s)
+{
+	return 0;
+}
 #endif /* CONFIG_SLUB_CPU_PARTIAL */
 
 /*
@@ -636,18 +646,12 @@ slub_set_cpu_partial(struct kmem_cache *s, unsigned int nr_objects)
  */
 static __always_inline void slab_lock(struct slab *slab)
 {
-	struct page *page = slab_page(slab);
-
-	VM_BUG_ON_PAGE(PageTail(page), page);
-	bit_spin_lock(PG_locked, &page->flags);
+	bit_spin_lock(PG_locked, &slab->__page_flags);
 }
 
 static __always_inline void slab_unlock(struct slab *slab)
 {
-	struct page *page = slab_page(slab);
-
-	VM_BUG_ON_PAGE(PageTail(page), page);
-	bit_spin_unlock(PG_locked, &page->flags);
+	bit_spin_unlock(PG_locked, &slab->__page_flags);
 }
 
 static inline bool
@@ -1865,198 +1869,279 @@ static bool freelist_corrupted(struct kmem_cache *s, struct slab *slab,
 #endif
 #endif /* CONFIG_SLUB_DEBUG */
 
-static inline enum node_stat_item cache_vmstat_idx(struct kmem_cache *s)
+#ifdef CONFIG_SLAB_OBJ_EXT
+
+#ifdef CONFIG_MEM_ALLOC_PROFILING_DEBUG
+
+static inline void mark_objexts_empty(struct slabobj_ext *obj_exts)
 {
-	return (s->flags & SLAB_RECLAIM_ACCOUNT) ?
-		NR_SLAB_RECLAIMABLE_B : NR_SLAB_UNRECLAIMABLE_B;
+	struct slabobj_ext *slab_exts;
+	struct slab *obj_exts_slab;
+
+	obj_exts_slab = virt_to_slab(obj_exts);
+	slab_exts = slab_obj_exts(obj_exts_slab);
+	if (slab_exts) {
+		unsigned int offs = obj_to_index(obj_exts_slab->slab_cache,
+						 obj_exts_slab, obj_exts);
+		/* codetag should be NULL */
+		WARN_ON(slab_exts[offs].ref.ct);
+		set_codetag_empty(&slab_exts[offs].ref);
+	}
 }
 
-#ifdef CONFIG_MEMCG_KMEM
-static inline void memcg_free_slab_cgroups(struct slab *slab)
+static inline void mark_failed_objexts_alloc(struct slab *slab)
 {
-	kfree(slab_objcgs(slab));
-	slab->memcg_data = 0;
+	slab->obj_exts = OBJEXTS_ALLOC_FAIL;
 }
 
-static inline size_t obj_full_size(struct kmem_cache *s)
+static inline void handle_failed_objexts_alloc(unsigned long obj_exts,
+			struct slabobj_ext *vec, unsigned int objects)
 {
 	/*
-	 * For each accounted object there is an extra space which is used
-	 * to store obj_cgroup membership. Charge it too.
+	 * If vector previously failed to allocate then we have live
+	 * objects with no tag reference. Mark all references in this
+	 * vector as empty to avoid warnings later on.
 	 */
-	return s->size + sizeof(struct obj_cgroup *);
+	if (obj_exts & OBJEXTS_ALLOC_FAIL) {
+		unsigned int i;
+
+		for (i = 0; i < objects; i++)
+			set_codetag_empty(&vec[i].ref);
+	}
 }
 
+#else /* CONFIG_MEM_ALLOC_PROFILING_DEBUG */
+
+static inline void mark_objexts_empty(struct slabobj_ext *obj_exts) {}
+static inline void mark_failed_objexts_alloc(struct slab *slab) {}
+static inline void handle_failed_objexts_alloc(unsigned long obj_exts,
+			struct slabobj_ext *vec, unsigned int objects) {}
+
+#endif /* CONFIG_MEM_ALLOC_PROFILING_DEBUG */
+
 /*
- * Returns false if the allocation should fail.
+ * The allocated objcg pointers array is not accounted directly.
+ * Moreover, it should not come from DMA buffer and is not readily
+ * reclaimable. So those GFP bits should be masked off.
  */
-static bool __memcg_slab_pre_alloc_hook(struct kmem_cache *s,
-					struct list_lru *lru,
-					struct obj_cgroup **objcgp,
-					size_t objects, gfp_t flags)
+#define OBJCGS_CLEAR_MASK	(__GFP_DMA | __GFP_RECLAIMABLE | \
+				__GFP_ACCOUNT | __GFP_NOFAIL)
+
+int alloc_slab_obj_exts(struct slab *slab, struct kmem_cache *s,
+		        gfp_t gfp, bool new_slab)
+{
+	unsigned int objects = objs_per_slab(s, slab);
+	unsigned long new_exts;
+	unsigned long old_exts;
+	struct slabobj_ext *vec;
+
+	gfp &= ~OBJCGS_CLEAR_MASK;
+	/* Prevent recursive extension vector allocation */
+	gfp |= __GFP_NO_OBJ_EXT;
+	vec = kcalloc_node(objects, sizeof(struct slabobj_ext), gfp,
+			   slab_nid(slab));
+	if (!vec) {
+		/* Mark vectors which failed to allocate */
+		if (new_slab)
+			mark_failed_objexts_alloc(slab);
+
+		return -ENOMEM;
+	}
+
+	new_exts = (unsigned long)vec;
+#ifdef CONFIG_MEMCG
+	new_exts |= MEMCG_DATA_OBJEXTS;
+#endif
+	old_exts = READ_ONCE(slab->obj_exts);
+	handle_failed_objexts_alloc(old_exts, vec, objects);
+	if (new_slab) {
+		/*
+		 * If the slab is brand new and nobody can yet access its
+		 * obj_exts, no synchronization is required and obj_exts can
+		 * be simply assigned.
+		 */
+		slab->obj_exts = new_exts;
+	} else if ((old_exts & ~OBJEXTS_FLAGS_MASK) ||
+		   cmpxchg(&slab->obj_exts, old_exts, new_exts) != old_exts) {
+		/*
+		 * If the slab is already in use, somebody can allocate and
+		 * assign slabobj_exts in parallel. In this case the existing
+		 * objcg vector should be reused.
+		 */
+		mark_objexts_empty(vec);
+		kfree(vec);
+		return 0;
+	}
+
+	kmemleak_not_leak(vec);
+	return 0;
+}
+
+static inline void free_slab_obj_exts(struct slab *slab)
 {
+	struct slabobj_ext *obj_exts;
+
+	obj_exts = slab_obj_exts(slab);
+	if (!obj_exts)
+		return;
+
 	/*
-	 * The obtained objcg pointer is safe to use within the current scope,
-	 * defined by current task or set_active_memcg() pair.
-	 * obj_cgroup_get() is used to get a permanent reference.
+	 * obj_exts was created with __GFP_NO_OBJ_EXT flag, therefore its
+	 * corresponding extension will be NULL. alloc_tag_sub() will throw a
+	 * warning if slab has extensions but the extension of an object is
+	 * NULL, therefore replace NULL with CODETAG_EMPTY to indicate that
+	 * the extension for obj_exts is expected to be NULL.
 	 */
-	struct obj_cgroup *objcg = current_obj_cgroup();
-	if (!objcg)
+	mark_objexts_empty(obj_exts);
+	kfree(obj_exts);
+	slab->obj_exts = 0;
+}
+
+static inline bool need_slab_obj_ext(void)
+{
+	if (mem_alloc_profiling_enabled())
 		return true;
 
-	if (lru) {
-		int ret;
-		struct mem_cgroup *memcg;
+	/*
+	 * CONFIG_MEMCG_KMEM creates vector of obj_cgroup objects conditionally
+	 * inside memcg_slab_post_alloc_hook. No other users for now.
+	 */
+	return false;
+}
 
-		memcg = get_mem_cgroup_from_objcg(objcg);
-		ret = memcg_list_lru_alloc(memcg, lru, flags);
-		css_put(&memcg->css);
+static inline struct slabobj_ext *
+prepare_slab_obj_exts_hook(struct kmem_cache *s, gfp_t flags, void *p)
+{
+	struct slab *slab;
 
-		if (ret)
-			return false;
-	}
+	if (!p)
+		return NULL;
 
-	if (obj_cgroup_charge(objcg, flags, objects * obj_full_size(s)))
-		return false;
+	if (s->flags & (SLAB_NO_OBJ_EXT | SLAB_NOLEAKTRACE))
+		return NULL;
 
-	*objcgp = objcg;
-	return true;
+	if (flags & __GFP_NO_OBJ_EXT)
+		return NULL;
+
+	slab = virt_to_slab(p);
+	if (!slab_obj_exts(slab) &&
+	    WARN(alloc_slab_obj_exts(slab, s, flags, false),
+		 "%s, %s: Failed to create slab extension vector!\n",
+		 __func__, s->name))
+		return NULL;
+
+	return slab_obj_exts(slab) + obj_to_index(s, slab, p);
 }
 
-/*
- * Returns false if the allocation should fail.
- */
-static __fastpath_inline
-bool memcg_slab_pre_alloc_hook(struct kmem_cache *s, struct list_lru *lru,
-			       struct obj_cgroup **objcgp, size_t objects,
-			       gfp_t flags)
+static inline void
+alloc_tagging_slab_free_hook(struct kmem_cache *s, struct slab *slab, void **p,
+			     int objects)
 {
-	if (!memcg_kmem_online())
-		return true;
+#ifdef CONFIG_MEM_ALLOC_PROFILING
+	struct slabobj_ext *obj_exts;
+	int i;
 
-	if (likely(!(flags & __GFP_ACCOUNT) && !(s->flags & SLAB_ACCOUNT)))
-		return true;
+	if (!mem_alloc_profiling_enabled())
+		return;
+
+	obj_exts = slab_obj_exts(slab);
+	if (!obj_exts)
+		return;
 
-	return likely(__memcg_slab_pre_alloc_hook(s, lru, objcgp, objects,
-						  flags));
+	for (i = 0; i < objects; i++) {
+		unsigned int off = obj_to_index(s, slab, p[i]);
+
+		alloc_tag_sub(&obj_exts[off].ref, s->size);
+	}
+#endif
 }
 
-static void __memcg_slab_post_alloc_hook(struct kmem_cache *s,
-					 struct obj_cgroup *objcg,
-					 gfp_t flags, size_t size,
-					 void **p)
+#else /* CONFIG_SLAB_OBJ_EXT */
+
+static int alloc_slab_obj_exts(struct slab *slab, struct kmem_cache *s,
+			       gfp_t gfp, bool new_slab)
 {
-	struct slab *slab;
-	unsigned long off;
-	size_t i;
+	return 0;
+}
 
-	flags &= gfp_allowed_mask;
+static inline void free_slab_obj_exts(struct slab *slab)
+{
+}
 
-	for (i = 0; i < size; i++) {
-		if (likely(p[i])) {
-			slab = virt_to_slab(p[i]);
+static inline bool need_slab_obj_ext(void)
+{
+	return false;
+}
 
-			if (!slab_objcgs(slab) &&
-			    memcg_alloc_slab_cgroups(slab, s, flags, false)) {
-				obj_cgroup_uncharge(objcg, obj_full_size(s));
-				continue;
-			}
+static inline struct slabobj_ext *
+prepare_slab_obj_exts_hook(struct kmem_cache *s, gfp_t flags, void *p)
+{
+	return NULL;
+}
 
-			off = obj_to_index(s, slab, p[i]);
-			obj_cgroup_get(objcg);
-			slab_objcgs(slab)[off] = objcg;
-			mod_objcg_state(objcg, slab_pgdat(slab),
-					cache_vmstat_idx(s), obj_full_size(s));
-		} else {
-			obj_cgroup_uncharge(objcg, obj_full_size(s));
-		}
-	}
+static inline void
+alloc_tagging_slab_free_hook(struct kmem_cache *s, struct slab *slab, void **p,
+			     int objects)
+{
 }
 
+#endif /* CONFIG_SLAB_OBJ_EXT */
+
+#ifdef CONFIG_MEMCG_KMEM
+
+static void memcg_alloc_abort_single(struct kmem_cache *s, void *object);
+
 static __fastpath_inline
-void memcg_slab_post_alloc_hook(struct kmem_cache *s, struct obj_cgroup *objcg,
+bool memcg_slab_post_alloc_hook(struct kmem_cache *s, struct list_lru *lru,
 				gfp_t flags, size_t size, void **p)
 {
-	if (likely(!memcg_kmem_online() || !objcg))
-		return;
-
-	return __memcg_slab_post_alloc_hook(s, objcg, flags, size, p);
-}
+	if (likely(!memcg_kmem_online()))
+		return true;
 
-static void __memcg_slab_free_hook(struct kmem_cache *s, struct slab *slab,
-				   void **p, int objects,
-				   struct obj_cgroup **objcgs)
-{
-	for (int i = 0; i < objects; i++) {
-		struct obj_cgroup *objcg;
-		unsigned int off;
+	if (likely(!(flags & __GFP_ACCOUNT) && !(s->flags & SLAB_ACCOUNT)))
+		return true;
 
-		off = obj_to_index(s, slab, p[i]);
-		objcg = objcgs[off];
-		if (!objcg)
-			continue;
+	if (likely(__memcg_slab_post_alloc_hook(s, lru, flags, size, p)))
+		return true;
 
-		objcgs[off] = NULL;
-		obj_cgroup_uncharge(objcg, obj_full_size(s));
-		mod_objcg_state(objcg, slab_pgdat(slab), cache_vmstat_idx(s),
-				-obj_full_size(s));
-		obj_cgroup_put(objcg);
+	if (likely(size == 1)) {
+		memcg_alloc_abort_single(s, *p);
+		*p = NULL;
+	} else {
+		kmem_cache_free_bulk(s, size, p);
 	}
+
+	return false;
 }
 
 static __fastpath_inline
 void memcg_slab_free_hook(struct kmem_cache *s, struct slab *slab, void **p,
 			  int objects)
 {
-	struct obj_cgroup **objcgs;
+	struct slabobj_ext *obj_exts;
 
 	if (!memcg_kmem_online())
 		return;
 
-	objcgs = slab_objcgs(slab);
-	if (likely(!objcgs))
+	obj_exts = slab_obj_exts(slab);
+	if (likely(!obj_exts))
 		return;
 
-	__memcg_slab_free_hook(s, slab, p, objects, objcgs);
-}
-
-static inline
-void memcg_slab_alloc_error_hook(struct kmem_cache *s, int objects,
-			   struct obj_cgroup *objcg)
-{
-	if (objcg)
-		obj_cgroup_uncharge(objcg, objects * obj_full_size(s));
+	__memcg_slab_free_hook(s, slab, p, objects, obj_exts);
 }
 #else /* CONFIG_MEMCG_KMEM */
-static inline void memcg_free_slab_cgroups(struct slab *slab)
-{
-}
-
-static inline bool memcg_slab_pre_alloc_hook(struct kmem_cache *s,
-					     struct list_lru *lru,
-					     struct obj_cgroup **objcgp,
-					     size_t objects, gfp_t flags)
-{
-	return true;
-}
-
-static inline void memcg_slab_post_alloc_hook(struct kmem_cache *s,
-					      struct obj_cgroup *objcg,
+static inline bool memcg_slab_post_alloc_hook(struct kmem_cache *s,
+					      struct list_lru *lru,
 					      gfp_t flags, size_t size,
 					      void **p)
 {
+	return true;
 }
 
 static inline void memcg_slab_free_hook(struct kmem_cache *s, struct slab *slab,
 					void **p, int objects)
 {
 }
-
-static inline
-void memcg_slab_alloc_error_hook(struct kmem_cache *s, int objects,
-				 struct obj_cgroup *objcg)
-{
-}
 #endif /* CONFIG_MEMCG_KMEM */
 
 /*
@@ -2111,9 +2196,9 @@ bool slab_free_hook(struct kmem_cache *s, void *x, bool init)
 	return !kasan_slab_free(s, x, init);
 }
 
-static inline bool slab_free_freelist_hook(struct kmem_cache *s,
-					   void **head, void **tail,
-					   int *cnt)
+static __fastpath_inline
+bool slab_free_freelist_hook(struct kmem_cache *s, void **head, void **tail,
+			     int *cnt)
 {
 
 	void *object;
@@ -2303,7 +2388,7 @@ static __always_inline void account_slab(struct slab *slab, int order,
 					 struct kmem_cache *s, gfp_t gfp)
 {
 	if (memcg_kmem_online() && (s->flags & SLAB_ACCOUNT))
-		memcg_alloc_slab_cgroups(slab, s, gfp, true);
+		alloc_slab_obj_exts(slab, s, gfp, true);
 
 	mod_node_page_state(slab_pgdat(slab), cache_vmstat_idx(s),
 			    PAGE_SIZE << order);
@@ -2312,8 +2397,8 @@ static __always_inline void account_slab(struct slab *slab, int order,
 static __always_inline void unaccount_slab(struct slab *slab, int order,
 					   struct kmem_cache *s)
 {
-	if (memcg_kmem_online())
-		memcg_free_slab_cgroups(slab);
+	if (memcg_kmem_online() || need_slab_obj_ext())
+		free_slab_obj_exts(slab);
 
 	mod_node_page_state(slab_pgdat(slab), cache_vmstat_idx(s),
 			    -(PAGE_SIZE << order));
@@ -2609,19 +2694,18 @@ static struct slab *get_partial_node(struct kmem_cache *s,
 		if (!partial) {
 			partial = slab;
 			stat(s, ALLOC_FROM_PARTIAL);
+
+			if ((slub_get_cpu_partial(s) == 0)) {
+				break;
+			}
 		} else {
 			put_cpu_partial(s, slab, 0);
 			stat(s, CPU_PARTIAL_NODE);
-			partial_slabs++;
-		}
-#ifdef CONFIG_SLUB_CPU_PARTIAL
-		if (!kmem_cache_has_cpu_partial(s)
-			|| partial_slabs > s->cpu_partial_slabs / 2)
-			break;
-#else
-		break;
-#endif
 
+			if (++partial_slabs > slub_get_cpu_partial(s) / 2) {
+				break;
+			}
+		}
 	}
 	spin_unlock_irqrestore(&n->list_lock, flags);
 	return partial;
@@ -2704,7 +2788,7 @@ static struct slab *get_partial(struct kmem_cache *s, int node,
 		searchnode = numa_mem_id();
 
 	slab = get_partial_node(s, get_node(s, searchnode), pc);
-	if (slab || node != NUMA_NO_NODE)
+	if (slab || (node != NUMA_NO_NODE && (pc->flags & __GFP_THISNODE)))
 		return slab;
 
 	return get_any_partial(s, pc);
@@ -2802,7 +2886,7 @@ static void deactivate_slab(struct kmem_cache *s, struct slab *slab,
 	struct slab new;
 	struct slab old;
 
-	if (slab->freelist) {
+	if (READ_ONCE(slab->freelist)) {
 		stat(s, DEACTIVATE_REMOTE_FREES);
 		tail = DEACTIVATE_TO_TAIL;
 	}
@@ -3234,6 +3318,43 @@ static unsigned long count_partial(struct kmem_cache_node *n,
 #endif /* CONFIG_SLUB_DEBUG || SLAB_SUPPORTS_SYSFS */
 
 #ifdef CONFIG_SLUB_DEBUG
+#define MAX_PARTIAL_TO_SCAN 10000
+
+static unsigned long count_partial_free_approx(struct kmem_cache_node *n)
+{
+	unsigned long flags;
+	unsigned long x = 0;
+	struct slab *slab;
+
+	spin_lock_irqsave(&n->list_lock, flags);
+	if (n->nr_partial <= MAX_PARTIAL_TO_SCAN) {
+		list_for_each_entry(slab, &n->partial, slab_list)
+			x += slab->objects - slab->inuse;
+	} else {
+		/*
+		 * For a long list, approximate the total count of objects in
+		 * it to meet the limit on the number of slabs to scan.
+		 * Scan from both the list's head and tail for better accuracy.
+		 */
+		unsigned long scanned = 0;
+
+		list_for_each_entry(slab, &n->partial, slab_list) {
+			x += slab->objects - slab->inuse;
+			if (++scanned == MAX_PARTIAL_TO_SCAN / 2)
+				break;
+		}
+		list_for_each_entry_reverse(slab, &n->partial, slab_list) {
+			x += slab->objects - slab->inuse;
+			if (++scanned == MAX_PARTIAL_TO_SCAN)
+				break;
+		}
+		x = mult_frac(x, n->nr_partial, scanned);
+		x = min(x, node_nr_objs(n));
+	}
+	spin_unlock_irqrestore(&n->list_lock, flags);
+	return x;
+}
+
 static noinline void
 slab_out_of_memory(struct kmem_cache *s, gfp_t gfpflags, int nid)
 {
@@ -3260,7 +3381,7 @@ slab_out_of_memory(struct kmem_cache *s, gfp_t gfpflags, int nid)
 		unsigned long nr_objs;
 		unsigned long nr_free;
 
-		nr_free  = count_partial(n, count_free);
+		nr_free  = count_partial_free_approx(n);
 		nr_slabs = node_nr_slabs(n);
 		nr_objs  = node_nr_objs(n);
 
@@ -3380,6 +3501,7 @@ static void *___slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
 	struct slab *slab;
 	unsigned long flags;
 	struct partial_context pc;
+	bool try_thisnode = true;
 
 	stat(s, ALLOC_SLOWPATH);
 
@@ -3506,6 +3628,21 @@ new_slab:
 new_objects:
 
 	pc.flags = gfpflags;
+	/*
+	 * When a preferred node is indicated but no __GFP_THISNODE
+	 *
+	 * 1) try to get a partial slab from target node only by having
+	 *    __GFP_THISNODE in pc.flags for get_partial()
+	 * 2) if 1) failed, try to allocate a new slab from target node with
+	 *    GPF_NOWAIT | __GFP_THISNODE opportunistically
+	 * 3) if 2) failed, retry with original gfpflags which will allow
+	 *    get_partial() try partial lists of other nodes before potentially
+	 *    allocating new page from other nodes
+	 */
+	if (unlikely(node != NUMA_NO_NODE && !(gfpflags & __GFP_THISNODE)
+		     && try_thisnode))
+		pc.flags = GFP_NOWAIT | __GFP_THISNODE;
+
 	pc.orig_size = orig_size;
 	slab = get_partial(s, node, &pc);
 	if (slab) {
@@ -3527,10 +3664,15 @@ new_objects:
 	}
 
 	slub_put_cpu_ptr(s->cpu_slab);
-	slab = new_slab(s, gfpflags, node);
+	slab = new_slab(s, pc.flags, node);
 	c = slub_get_cpu_ptr(s->cpu_slab);
 
 	if (unlikely(!slab)) {
+		if (node != NUMA_NO_NODE && !(gfpflags & __GFP_THISNODE)
+		    && try_thisnode) {
+			try_thisnode = false;
+			goto new_objects;
+		}
 		slab_out_of_memory(s, gfpflags, node);
 		return NULL;
 	}
@@ -3742,10 +3884,7 @@ noinline int should_failslab(struct kmem_cache *s, gfp_t gfpflags)
 ALLOW_ERROR_INJECTION(should_failslab, ERRNO);
 
 static __fastpath_inline
-struct kmem_cache *slab_pre_alloc_hook(struct kmem_cache *s,
-				       struct list_lru *lru,
-				       struct obj_cgroup **objcgp,
-				       size_t size, gfp_t flags)
+struct kmem_cache *slab_pre_alloc_hook(struct kmem_cache *s, gfp_t flags)
 {
 	flags &= gfp_allowed_mask;
 
@@ -3754,14 +3893,11 @@ struct kmem_cache *slab_pre_alloc_hook(struct kmem_cache *s,
 	if (unlikely(should_failslab(s, flags)))
 		return NULL;
 
-	if (unlikely(!memcg_slab_pre_alloc_hook(s, lru, objcgp, size, flags)))
-		return NULL;
-
 	return s;
 }
 
 static __fastpath_inline
-void slab_post_alloc_hook(struct kmem_cache *s,	struct obj_cgroup *objcg,
+bool slab_post_alloc_hook(struct kmem_cache *s, struct list_lru *lru,
 			  gfp_t flags, size_t size, void **p, bool init,
 			  unsigned int orig_size)
 {
@@ -3808,9 +3944,23 @@ void slab_post_alloc_hook(struct kmem_cache *s,	struct obj_cgroup *objcg,
 		kmemleak_alloc_recursive(p[i], s->object_size, 1,
 					 s->flags, init_flags);
 		kmsan_slab_alloc(s, p[i], init_flags);
+#ifdef CONFIG_MEM_ALLOC_PROFILING
+		if (need_slab_obj_ext()) {
+			struct slabobj_ext *obj_exts;
+
+			obj_exts = prepare_slab_obj_exts_hook(s, flags, p[i]);
+			/*
+			 * Currently obj_exts is used only for allocation profiling.
+			 * If other users appear then mem_alloc_profiling_enabled()
+			 * check should be added before alloc_tag_add().
+			 */
+			if (likely(obj_exts))
+				alloc_tag_add(&obj_exts->ref, current->alloc_tag, s->size);
+		}
+#endif
 	}
 
-	memcg_slab_post_alloc_hook(s, objcg, flags, size, p);
+	return memcg_slab_post_alloc_hook(s, lru, flags, size, p);
 }
 
 /*
@@ -3827,10 +3977,9 @@ static __fastpath_inline void *slab_alloc_node(struct kmem_cache *s, struct list
 		gfp_t gfpflags, int node, unsigned long addr, size_t orig_size)
 {
 	void *object;
-	struct obj_cgroup *objcg = NULL;
 	bool init = false;
 
-	s = slab_pre_alloc_hook(s, lru, &objcg, 1, gfpflags);
+	s = slab_pre_alloc_hook(s, gfpflags);
 	if (unlikely(!s))
 		return NULL;
 
@@ -3847,13 +3996,15 @@ out:
 	/*
 	 * When init equals 'true', like for kzalloc() family, only
 	 * @orig_size bytes might be zeroed instead of s->object_size
+	 * In case this fails due to memcg_slab_post_alloc_hook(),
+	 * object is set to NULL
 	 */
-	slab_post_alloc_hook(s, objcg, gfpflags, 1, &object, init, orig_size);
+	slab_post_alloc_hook(s, lru, gfpflags, 1, &object, init, orig_size);
 
 	return object;
 }
 
-void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags)
+void *kmem_cache_alloc_noprof(struct kmem_cache *s, gfp_t gfpflags)
 {
 	void *ret = slab_alloc_node(s, NULL, gfpflags, NUMA_NO_NODE, _RET_IP_,
 				    s->object_size);
@@ -3862,9 +4013,9 @@ void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags)
 
 	return ret;
 }
-EXPORT_SYMBOL(kmem_cache_alloc);
+EXPORT_SYMBOL(kmem_cache_alloc_noprof);
 
-void *kmem_cache_alloc_lru(struct kmem_cache *s, struct list_lru *lru,
+void *kmem_cache_alloc_lru_noprof(struct kmem_cache *s, struct list_lru *lru,
 			   gfp_t gfpflags)
 {
 	void *ret = slab_alloc_node(s, lru, gfpflags, NUMA_NO_NODE, _RET_IP_,
@@ -3874,7 +4025,7 @@ void *kmem_cache_alloc_lru(struct kmem_cache *s, struct list_lru *lru,
 
 	return ret;
 }
-EXPORT_SYMBOL(kmem_cache_alloc_lru);
+EXPORT_SYMBOL(kmem_cache_alloc_lru_noprof);
 
 /**
  * kmem_cache_alloc_node - Allocate an object on the specified node
@@ -3889,7 +4040,7 @@ EXPORT_SYMBOL(kmem_cache_alloc_lru);
  *
  * Return: pointer to the new object or %NULL in case of error
  */
-void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node)
+void *kmem_cache_alloc_node_noprof(struct kmem_cache *s, gfp_t gfpflags, int node)
 {
 	void *ret = slab_alloc_node(s, NULL, gfpflags, node, _RET_IP_, s->object_size);
 
@@ -3897,7 +4048,7 @@ void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node)
 
 	return ret;
 }
-EXPORT_SYMBOL(kmem_cache_alloc_node);
+EXPORT_SYMBOL(kmem_cache_alloc_node_noprof);
 
 /*
  * To avoid unnecessary overhead, we pass through large allocation requests
@@ -3914,7 +4065,7 @@ static void *__kmalloc_large_node(size_t size, gfp_t flags, int node)
 		flags = kmalloc_fix_flags(flags);
 
 	flags |= __GFP_COMP;
-	folio = (struct folio *)alloc_pages_node(node, flags, order);
+	folio = (struct folio *)alloc_pages_node_noprof(node, flags, order);
 	if (folio) {
 		ptr = folio_address(folio);
 		lruvec_stat_mod_folio(folio, NR_SLAB_UNRECLAIMABLE_B,
@@ -3929,7 +4080,7 @@ static void *__kmalloc_large_node(size_t size, gfp_t flags, int node)
 	return ptr;
 }
 
-void *kmalloc_large(size_t size, gfp_t flags)
+void *kmalloc_large_noprof(size_t size, gfp_t flags)
 {
 	void *ret = __kmalloc_large_node(size, flags, NUMA_NO_NODE);
 
@@ -3937,9 +4088,9 @@ void *kmalloc_large(size_t size, gfp_t flags)
 		      flags, NUMA_NO_NODE);
 	return ret;
 }
-EXPORT_SYMBOL(kmalloc_large);
+EXPORT_SYMBOL(kmalloc_large_noprof);
 
-void *kmalloc_large_node(size_t size, gfp_t flags, int node)
+void *kmalloc_large_node_noprof(size_t size, gfp_t flags, int node)
 {
 	void *ret = __kmalloc_large_node(size, flags, node);
 
@@ -3947,7 +4098,7 @@ void *kmalloc_large_node(size_t size, gfp_t flags, int node)
 		      flags, node);
 	return ret;
 }
-EXPORT_SYMBOL(kmalloc_large_node);
+EXPORT_SYMBOL(kmalloc_large_node_noprof);
 
 static __always_inline
 void *__do_kmalloc_node(size_t size, gfp_t flags, int node,
@@ -3974,26 +4125,26 @@ void *__do_kmalloc_node(size_t size, gfp_t flags, int node,
 	return ret;
 }
 
-void *__kmalloc_node(size_t size, gfp_t flags, int node)
+void *__kmalloc_node_noprof(size_t size, gfp_t flags, int node)
 {
 	return __do_kmalloc_node(size, flags, node, _RET_IP_);
 }
-EXPORT_SYMBOL(__kmalloc_node);
+EXPORT_SYMBOL(__kmalloc_node_noprof);
 
-void *__kmalloc(size_t size, gfp_t flags)
+void *__kmalloc_noprof(size_t size, gfp_t flags)
 {
 	return __do_kmalloc_node(size, flags, NUMA_NO_NODE, _RET_IP_);
 }
-EXPORT_SYMBOL(__kmalloc);
+EXPORT_SYMBOL(__kmalloc_noprof);
 
-void *__kmalloc_node_track_caller(size_t size, gfp_t flags,
-				  int node, unsigned long caller)
+void *kmalloc_node_track_caller_noprof(size_t size, gfp_t flags,
+				       int node, unsigned long caller)
 {
 	return __do_kmalloc_node(size, flags, node, caller);
 }
-EXPORT_SYMBOL(__kmalloc_node_track_caller);
+EXPORT_SYMBOL(kmalloc_node_track_caller_noprof);
 
-void *kmalloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size)
+void *kmalloc_trace_noprof(struct kmem_cache *s, gfp_t gfpflags, size_t size)
 {
 	void *ret = slab_alloc_node(s, NULL, gfpflags, NUMA_NO_NODE,
 					    _RET_IP_, size);
@@ -4003,9 +4154,9 @@ void *kmalloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size)
 	ret = kasan_kmalloc(s, ret, size, gfpflags);
 	return ret;
 }
-EXPORT_SYMBOL(kmalloc_trace);
+EXPORT_SYMBOL(kmalloc_trace_noprof);
 
-void *kmalloc_node_trace(struct kmem_cache *s, gfp_t gfpflags,
+void *kmalloc_node_trace_noprof(struct kmem_cache *s, gfp_t gfpflags,
 			 int node, size_t size)
 {
 	void *ret = slab_alloc_node(s, NULL, gfpflags, node, _RET_IP_, size);
@@ -4015,7 +4166,7 @@ void *kmalloc_node_trace(struct kmem_cache *s, gfp_t gfpflags,
 	ret = kasan_kmalloc(s, ret, size, gfpflags);
 	return ret;
 }
-EXPORT_SYMBOL(kmalloc_node_trace);
+EXPORT_SYMBOL(kmalloc_node_trace_noprof);
 
 static noinline void free_to_partial_list(
 	struct kmem_cache *s, struct slab *slab,
@@ -4232,7 +4383,7 @@ redo:
 	c = raw_cpu_ptr(s->cpu_slab);
 	tid = READ_ONCE(c->tid);
 
-	/* Same with comment on barrier() in slab_alloc_node() */
+	/* Same with comment on barrier() in __slab_alloc_node() */
 	barrier();
 
 	if (unlikely(slab != c->slab)) {
@@ -4282,16 +4433,28 @@ void slab_free(struct kmem_cache *s, struct slab *slab, void *object,
 	       unsigned long addr)
 {
 	memcg_slab_free_hook(s, slab, &object, 1);
+	alloc_tagging_slab_free_hook(s, slab, &object, 1);
 
 	if (likely(slab_free_hook(s, object, slab_want_init_on_free(s))))
 		do_slab_free(s, slab, object, object, 1, addr);
 }
 
+#ifdef CONFIG_MEMCG_KMEM
+/* Do not inline the rare memcg charging failed path into the allocation path */
+static noinline
+void memcg_alloc_abort_single(struct kmem_cache *s, void *object)
+{
+	if (likely(slab_free_hook(s, object, slab_want_init_on_free(s))))
+		do_slab_free(s, virt_to_slab(object), object, object, 1, _RET_IP_);
+}
+#endif
+
 static __fastpath_inline
 void slab_free_bulk(struct kmem_cache *s, struct slab *slab, void *head,
 		    void *tail, void **p, int cnt, unsigned long addr)
 {
 	memcg_slab_free_hook(s, slab, p, cnt);
+	alloc_tagging_slab_free_hook(s, slab, p, cnt);
 	/*
 	 * With KASAN enabled slab_free_freelist_hook modifies the freelist
 	 * to remove objects, whose reuse must be delayed.
@@ -4618,36 +4781,33 @@ error:
 #endif /* CONFIG_SLUB_TINY */
 
 /* Note that interrupts must be enabled when calling this function. */
-int kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags, size_t size,
-			  void **p)
+int kmem_cache_alloc_bulk_noprof(struct kmem_cache *s, gfp_t flags, size_t size,
+				 void **p)
 {
 	int i;
-	struct obj_cgroup *objcg = NULL;
 
 	if (!size)
 		return 0;
 
-	/* memcg and kmem_cache debug support */
-	s = slab_pre_alloc_hook(s, NULL, &objcg, size, flags);
+	s = slab_pre_alloc_hook(s, flags);
 	if (unlikely(!s))
 		return 0;
 
 	i = __kmem_cache_alloc_bulk(s, flags, size, p);
+	if (unlikely(i == 0))
+		return 0;
 
 	/*
 	 * memcg and kmem_cache debug support and memory initialization.
 	 * Done outside of the IRQ disabled fastpath loop.
 	 */
-	if (likely(i != 0)) {
-		slab_post_alloc_hook(s, objcg, flags, size, p,
-			slab_want_init_on_alloc(flags, s), s->object_size);
-	} else {
-		memcg_slab_alloc_error_hook(s, size, objcg);
+	if (unlikely(!slab_post_alloc_hook(s, NULL, flags, size, p,
+		    slab_want_init_on_alloc(flags, s), s->object_size))) {
+		return 0;
 	}
-
 	return i;
 }
-EXPORT_SYMBOL(kmem_cache_alloc_bulk);
+EXPORT_SYMBOL(kmem_cache_alloc_bulk_noprof);
 
 
 /*
@@ -4853,7 +5013,6 @@ static void early_kmem_cache_node_alloc(int node)
 	BUG_ON(!n);
 #ifdef CONFIG_SLUB_DEBUG
 	init_object(kmem_cache_node, n, SLUB_RED_ACTIVE);
-	init_tracking(kmem_cache_node, n);
 #endif
 	n = kasan_slab_alloc(kmem_cache_node, n, GFP_KERNEL, false);
 	slab->freelist = get_freepointer(kmem_cache_node, n);
@@ -5066,9 +5225,7 @@ static int calculate_sizes(struct kmem_cache *s)
 	if ((int)order < 0)
 		return 0;
 
-	s->allocflags = 0;
-	if (order)
-		s->allocflags |= __GFP_COMP;
+	s->allocflags = __GFP_COMP;
 
 	if (s->flags & SLAB_CACHE_DMA)
 		s->allocflags |= GFP_DMA;
@@ -5636,7 +5793,8 @@ void __init kmem_cache_init(void)
 		node_set(node, slab_nodes);
 
 	create_boot_cache(kmem_cache_node, "kmem_cache_node",
-		sizeof(struct kmem_cache_node), SLAB_HWCACHE_ALIGN, 0, 0);
+			sizeof(struct kmem_cache_node),
+			SLAB_HWCACHE_ALIGN | SLAB_NO_OBJ_EXT, 0, 0);
 
 	hotplug_memory_notifier(slab_memory_callback, SLAB_CALLBACK_PRI);
 
@@ -5646,7 +5804,7 @@ void __init kmem_cache_init(void)
 	create_boot_cache(kmem_cache, "kmem_cache",
 			offsetof(struct kmem_cache, node) +
 				nr_node_ids * sizeof(struct kmem_cache_node *),
-		       SLAB_HWCACHE_ALIGN, 0, 0);
+			SLAB_HWCACHE_ALIGN | SLAB_NO_OBJ_EXT, 0, 0);
 
 	kmem_cache = bootstrap(&boot_kmem_cache);
 	kmem_cache_node = bootstrap(&boot_kmem_cache_node);
@@ -6042,7 +6200,7 @@ static ssize_t show_slab_objects(struct kmem_cache *s,
 				else if (flags & SO_OBJECTS)
 					WARN_ON_ONCE(1);
 				else
-					x = slab->slabs;
+					x = data_race(slab->slabs);
 				total += x;
 				nodes[node] += x;
 			}
@@ -6247,7 +6405,7 @@ static ssize_t slabs_cpu_partial_show(struct kmem_cache *s, char *buf)
 		slab = slub_percpu_partial(per_cpu_ptr(s->cpu_slab, cpu));
 
 		if (slab)
-			slabs += slab->slabs;
+			slabs += data_race(slab->slabs);
 	}
 #endif
 
@@ -6261,7 +6419,7 @@ static ssize_t slabs_cpu_partial_show(struct kmem_cache *s, char *buf)
 
 		slab = slub_percpu_partial(per_cpu_ptr(s->cpu_slab, cpu));
 		if (slab) {
-			slabs = READ_ONCE(slab->slabs);
+			slabs = data_race(slab->slabs);
 			objects = (slabs * oo_objects(s->oo)) / 2;
 			len += sysfs_emit_at(buf, len, " C%d=%d(%d)",
 					     cpu, objects, slabs);
@@ -7095,7 +7253,7 @@ void get_slabinfo(struct kmem_cache *s, struct slabinfo *sinfo)
 	for_each_kmem_cache_node(s, node, n) {
 		nr_slabs += node_nr_slabs(n);
 		nr_objs += node_nr_objs(n);
-		nr_free += count_partial(n, count_free);
+		nr_free += count_partial_free_approx(n);
 	}
 
 	sinfo->active_objs = nr_objs - nr_free;
@@ -7105,14 +7263,4 @@ void get_slabinfo(struct kmem_cache *s, struct slabinfo *sinfo)
 	sinfo->objects_per_slab = oo_objects(s->oo);
 	sinfo->cache_order = oo_order(s->oo);
 }
-
-void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *s)
-{
-}
-
-ssize_t slabinfo_write(struct file *file, const char __user *buffer,
-		       size_t count, loff_t *ppos)
-{
-	return -EIO;
-}
 #endif /* CONFIG_SLUB_DEBUG */