Backmerge remote-tracking branch 'drm/drm-next' into drm-misc-next

Required bump from v5.13-rc3 to v5.14-rc3, and to pick up sysfb compilation fixes.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

1 files changed, 53 insertions, 22 deletions

diff --git a/mm/slab_common.c b/mm/slab_common.c
index a4a571428c51..1c673c323baf 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -97,8 +97,7 @@ EXPORT_SYMBOL(kmem_cache_size);
 #ifdef CONFIG_DEBUG_VM
 static int kmem_cache_sanity_check(const char *name, unsigned int size)
 {
-	if (!name || in_interrupt() || size < sizeof(void *) ||
-		size > KMALLOC_MAX_SIZE) {
+	if (!name || in_interrupt() || size > KMALLOC_MAX_SIZE) {
 		pr_err("kmem_cache_create(%s) integrity check failed\n", name);
 		return -EINVAL;
 	}
@@ -378,11 +377,11 @@ out_unlock:
 
 	if (err) {
 		if (flags & SLAB_PANIC)
-			panic("kmem_cache_create: Failed to create slab '%s'. Error %d\n",
-				name, err);
+			panic("%s: Failed to create slab '%s'. Error %d\n",
+				__func__, name, err);
 		else {
-			pr_warn("kmem_cache_create(%s) failed with error %d\n",
-				name, err);
+			pr_warn("%s(%s) failed with error %d\n",
+				__func__, name, err);
 			dump_stack();
 		}
 		return NULL;
@@ -449,6 +448,7 @@ static void slab_caches_to_rcu_destroy_workfn(struct work_struct *work)
 	rcu_barrier();
 
 	list_for_each_entry_safe(s, s2, &to_destroy, list) {
+		debugfs_slab_release(s);
 		kfence_shutdown_cache(s);
 #ifdef SLAB_SUPPORTS_SYSFS
 		sysfs_slab_release(s);
@@ -476,6 +476,7 @@ static int shutdown_cache(struct kmem_cache *s)
 		schedule_work(&slab_caches_to_rcu_destroy_work);
 	} else {
 		kfence_shutdown_cache(s);
+		debugfs_slab_release(s);
 #ifdef SLAB_SUPPORTS_SYSFS
 		sysfs_slab_unlink(s);
 		sysfs_slab_release(s);
@@ -509,8 +510,8 @@ void kmem_cache_destroy(struct kmem_cache *s)
 
 	err = shutdown_cache(s);
 	if (err) {
-		pr_err("kmem_cache_destroy %s: Slab cache still has objects\n",
-		       s->name);
+		pr_err("%s %s: Slab cache still has objects\n",
+		       __func__, s->name);
 		dump_stack();
 	}
 out_unlock:
@@ -574,7 +575,7 @@ EXPORT_SYMBOL_GPL(kmem_valid_obj);
  * depends on the type of object and on how much debugging is enabled.
  * For a slab-cache object, the fact that it is a slab object is printed,
  * and, if available, the slab name, return address, and stack trace from
- * the allocation of that object.
+ * the allocation and last free path of that object.
  *
  * This function will splat if passed a pointer to a non-slab object.
  * If you are not sure what type of object you have, you should instead
@@ -619,6 +620,16 @@ void kmem_dump_obj(void *object)
 			break;
 		pr_info("    %pS\n", kp.kp_stack[i]);
 	}
+
+	if (kp.kp_free_stack[0])
+		pr_cont(" Free path:\n");
+
+	for (i = 0; i < ARRAY_SIZE(kp.kp_free_stack); i++) {
+		if (!kp.kp_free_stack[i])
+			break;
+		pr_info("    %pS\n", kp.kp_free_stack[i]);
+	}
+
 }
 EXPORT_SYMBOL_GPL(kmem_dump_obj);
 #endif
@@ -737,26 +748,30 @@ struct kmem_cache *kmalloc_slab(size_t size, gfp_t flags)
 }
 
 #ifdef CONFIG_ZONE_DMA
-#define INIT_KMALLOC_INFO(__size, __short_size)			\
-{								\
-	.name[KMALLOC_NORMAL]  = "kmalloc-" #__short_size,	\
-	.name[KMALLOC_RECLAIM] = "kmalloc-rcl-" #__short_size,	\
-	.name[KMALLOC_DMA]     = "dma-kmalloc-" #__short_size,	\
-	.size = __size,						\
-}
+#define KMALLOC_DMA_NAME(sz)	.name[KMALLOC_DMA] = "dma-kmalloc-" #sz,
+#else
+#define KMALLOC_DMA_NAME(sz)
+#endif
+
+#ifdef CONFIG_MEMCG_KMEM
+#define KMALLOC_CGROUP_NAME(sz)	.name[KMALLOC_CGROUP] = "kmalloc-cg-" #sz,
 #else
+#define KMALLOC_CGROUP_NAME(sz)
+#endif
+
 #define INIT_KMALLOC_INFO(__size, __short_size)			\
 {								\
 	.name[KMALLOC_NORMAL]  = "kmalloc-" #__short_size,	\
 	.name[KMALLOC_RECLAIM] = "kmalloc-rcl-" #__short_size,	\
+	KMALLOC_CGROUP_NAME(__short_size)			\
+	KMALLOC_DMA_NAME(__short_size)				\
 	.size = __size,						\
 }
-#endif
 
 /*
  * kmalloc_info[] is to make slub_debug=,kmalloc-xx option work at boot time.
- * kmalloc_index() supports up to 2^26=64MB, so the final entry of the table is
- * kmalloc-67108864.
+ * kmalloc_index() supports up to 2^25=32MB, so the final entry of the table is
+ * kmalloc-32M.
  */
 const struct kmalloc_info_struct kmalloc_info[] __initconst = {
 	INIT_KMALLOC_INFO(0, 0),
@@ -784,8 +799,7 @@ const struct kmalloc_info_struct kmalloc_info[] __initconst = {
 	INIT_KMALLOC_INFO(4194304, 4M),
 	INIT_KMALLOC_INFO(8388608, 8M),
 	INIT_KMALLOC_INFO(16777216, 16M),
-	INIT_KMALLOC_INFO(33554432, 32M),
-	INIT_KMALLOC_INFO(67108864, 64M)
+	INIT_KMALLOC_INFO(33554432, 32M)
 };
 
 /*
@@ -838,13 +852,27 @@ void __init setup_kmalloc_cache_index_table(void)
 static void __init
 new_kmalloc_cache(int idx, enum kmalloc_cache_type type, slab_flags_t flags)
 {
-	if (type == KMALLOC_RECLAIM)
+	if (type == KMALLOC_RECLAIM) {
 		flags |= SLAB_RECLAIM_ACCOUNT;
+	} else if (IS_ENABLED(CONFIG_MEMCG_KMEM) && (type == KMALLOC_CGROUP)) {
+		if (cgroup_memory_nokmem) {
+			kmalloc_caches[type][idx] = kmalloc_caches[KMALLOC_NORMAL][idx];
+			return;
+		}
+		flags |= SLAB_ACCOUNT;
+	}
 
 	kmalloc_caches[type][idx] = create_kmalloc_cache(
 					kmalloc_info[idx].name[type],
 					kmalloc_info[idx].size, flags, 0,
 					kmalloc_info[idx].size);
+
+	/*
+	 * If CONFIG_MEMCG_KMEM is enabled, disable cache merging for
+	 * KMALLOC_NORMAL caches.
+	 */
+	if (IS_ENABLED(CONFIG_MEMCG_KMEM) && (type == KMALLOC_NORMAL))
+		kmalloc_caches[type][idx]->refcount = -1;
 }
 
 /*
@@ -857,6 +885,9 @@ void __init create_kmalloc_caches(slab_flags_t flags)
 	int i;
 	enum kmalloc_cache_type type;
 
+	/*
+	 * Including KMALLOC_CGROUP if CONFIG_MEMCG_KMEM defined
+	 */
 	for (type = KMALLOC_NORMAL; type <= KMALLOC_RECLAIM; type++) {
 		for (i = KMALLOC_SHIFT_LOW; i <= KMALLOC_SHIFT_HIGH; i++) {
 			if (!kmalloc_caches[type][i])