X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;f=mm%2Futil.c;h=54870226cea64aa36e253b1c1f196e9c8ec58c2a;hb=23b6ba45f321bd5c4cddde4b8c85b3f71da3cdb8;hp=8c9b7d1e7c499828c429b93853af28e7299edcc1;hpb=6be5f58215f1dcbd697a695ad5db9986c28c50c3;p=linux-2.6-microblaze.git

diff --git a/mm/util.c b/mm/util.c
index 8c9b7d1e7c49..54870226cea6 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -982,3 +982,34 @@ int __weak memcmp_pages(struct page *page1, struct page *page2)
 	kunmap_atomic(addr1);
 	return ret;
 }
+
+/**
+ * mem_dump_obj - Print available provenance information
+ * @object: object for which to find provenance information.
+ *
+ * This function uses pr_cont(), so that the caller is expected to have
+ * printed out whatever preamble is appropriate.  The provenance information
+ * depends on the type of object and on how much debugging is enabled.
+ * For example, for a slab-cache object, the slab name is printed, and,
+ * if available, the return address and stack trace from the allocation
+ * of that object.
+ */
+void mem_dump_obj(void *object)
+{
+	if (kmem_valid_obj(object)) {
+		kmem_dump_obj(object);
+		return;
+	}
+	if (vmalloc_dump_obj(object))
+		return;
+	if (!virt_addr_valid(object)) {
+		if (object == NULL)
+			pr_cont(" NULL pointer.\n");
+		else if (object == ZERO_SIZE_PTR)
+			pr_cont(" zero-size pointer.\n");
+		else
+			pr_cont(" non-paged memory.\n");
+		return;
+	}
+	pr_cont(" non-slab/vmalloc memory.\n");
+}