X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=drivers%2Facpi%2Fnamespace%2Fnsalloc.c;h=1d693d8ad2d8a044e528920331513254738d98b1;hb=3dd6786f55219f87fd33e153669600d715ca9270;hp=dc3f0739a46b3aee1c4208cb7f9e46a57ff82a89;hpb=60e04a5c533785c23ce6b76a6e5058328fe68edb;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/acpi/namespace/nsalloc.c b/drivers/acpi/namespace/nsalloc.c
index dc3f0739a46..1d693d8ad2d 100644
--- a/drivers/acpi/namespace/nsalloc.c
+++ b/drivers/acpi/namespace/nsalloc.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2006, R. Byron Moore
+ * Copyright (C) 2000 - 2007, R. Byron Moore
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -61,6 +61,9 @@ ACPI_MODULE_NAME("nsalloc")
 struct acpi_namespace_node *acpi_ns_create_node(u32 name)
 {
 	struct acpi_namespace_node *node;
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+	u32 temp;
+#endif
 
 	ACPI_FUNCTION_TRACE(ns_create_node);
 
@@ -71,6 +74,15 @@ struct acpi_namespace_node *acpi_ns_create_node(u32 name)
 
 	ACPI_MEM_TRACKING(acpi_gbl_ns_node_list->total_allocated++);
 
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+	temp =
+	    acpi_gbl_ns_node_list->total_allocated -
+	    acpi_gbl_ns_node_list->total_freed;
+	if (temp > acpi_gbl_ns_node_list->max_occupied) {
+		acpi_gbl_ns_node_list->max_occupied = temp;
+	}
+#endif
+
 	node->name.integer = name;
 	ACPI_SET_DESCRIPTOR_TYPE(node, ACPI_DESC_TYPE_NAMED);
 	return_PTR(node);
@@ -386,14 +398,17 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node)
  *              specific ID.  Used to delete entire ACPI tables.  All
  *              reference counts are updated.
  *
+ * MUTEX:       Locks namespace during deletion walk.
+ *
  ******************************************************************************/
 
 void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
 {
 	struct acpi_namespace_node *child_node;
 	struct acpi_namespace_node *deletion_node;
-	u32 level;
 	struct acpi_namespace_node *parent_node;
+	u32 level;
+	acpi_status status;
 
 	ACPI_FUNCTION_TRACE_U32(ns_delete_namespace_by_owner, owner_id);
 
@@ -401,6 +416,13 @@ void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
 		return_VOID;
 	}
 
+	/* Lock namespace for possible update */
+
+	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+	if (ACPI_FAILURE(status)) {
+		return_VOID;
+	}
+
 	deletion_node = NULL;
 	parent_node = acpi_gbl_root_node;
 	child_node = NULL;
@@ -469,5 +491,6 @@ void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id)
 		}
 	}
 
+	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
 	return_VOID;
 }