ACPI: ACPICA 20060310

Tagged all external interfaces to the subsystem with the
new ACPI_EXPORT_SYMBOL macro. This macro can be defined
as necessary to assist kernel integration. For Linux,
the macro resolves to the EXPORT_SYMBOL macro. The default
definition is NULL.

Added the ACPI_THREAD_ID type for the return value from
acpi_os_get_thread_id(). This allows the host to define this
as necessary to simplify kernel integration. The default
definition is ACPI_NATIVE_UINT.

Valery Podrezov fixed two interpreter problems related
to error processing, the deletion of objects, and placing
invalid pointers onto the internal operator result stack.
http://bugzilla.kernel.org/show_bug.cgi?id=6028
http://bugzilla.kernel.org/show_bug.cgi?id=6151

Increased the reference count threshold where a warning is
emitted for large reference counts in order to eliminate
unnecessary warnings on systems with large namespaces
(especially 64-bit.) Increased the value from 0x400
to 0x800.

Due to universal disagreement as to the meaning of the
'c' in the calloc() function, the ACPI_MEM_CALLOCATE
macro has been renamed to ACPI_ALLOCATE_ZEROED so that the
purpose of the interface is 'clear'. ACPI_MEM_ALLOCATE and
ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and ACPI_FREE.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

12 files changed, 54 insertions, 60 deletions

diff --git a/drivers/acpi/utilities/utalloc.c b/drivers/acpi/utilities/utalloc.c
index 34de3791d4c2..7b35eb84d058 100644
--- a/drivers/acpi/utilities/utalloc.c
+++ b/drivers/acpi/utilities/utalloc.c
@@ -252,7 +252,7 @@ acpi_ut_initialize_buffer(struct acpi_buffer * buffer,
 
                 /* Allocate a new buffer with local interface to allow tracking */
 
-                buffer->pointer = ACPI_MEM_CALLOCATE(required_length);
+                buffer->pointer = ACPI_ALLOCATE_ZEROED(required_length);
                 if (!buffer->pointer) {
                         return (AE_NO_MEMORY);
                 }
diff --git a/drivers/acpi/utilities/utcache.c b/drivers/acpi/utilities/utcache.c
index 044c890e5b3c..5d2f4b2802a5 100644
--- a/drivers/acpi/utilities/utcache.c
+++ b/drivers/acpi/utilities/utcache.c
@@ -125,7 +125,7 @@ acpi_status acpi_os_purge_cache(struct acpi_memory_list * cache)
                                                 &(((char *)cache->
                                                    list_head)[cache->
                                                               link_offset])));
-                ACPI_MEM_FREE(cache->list_head);
+                ACPI_FREE(cache->list_head);
 
                 cache->list_head = next;
                 cache->current_depth--;
@@ -194,7 +194,7 @@ acpi_os_release_object(struct acpi_memory_list * cache, void *object)
         /* If cache is full, just free this object */
 
         if (cache->current_depth >= cache->max_depth) {
-                ACPI_MEM_FREE(object);
+                ACPI_FREE(object);
                 ACPI_MEM_TRACKING(cache->total_freed++);
         }
 
@@ -289,14 +289,14 @@ void *acpi_os_acquire_object(struct acpi_memory_list *cache)
 
                 ACPI_MEM_TRACKING(cache->total_allocated++);
 
-                /* Avoid deadlock with ACPI_MEM_CALLOCATE */
+                /* Avoid deadlock with ACPI_ALLOCATE_ZEROED */
 
                 status = acpi_ut_release_mutex(ACPI_MTX_CACHES);
                 if (ACPI_FAILURE(status)) {
                         return (NULL);
                 }
 
-                object = ACPI_MEM_CALLOCATE(cache->object_size);
+                object = ACPI_ALLOCATE_ZEROED(cache->object_size);
                 if (!object) {
                         return (NULL);
                 }
diff --git a/drivers/acpi/utilities/utcopy.c b/drivers/acpi/utilities/utcopy.c
index 47875935c3f4..371cddc0d574 100644
--- a/drivers/acpi/utilities/utcopy.c
+++ b/drivers/acpi/utilities/utcopy.c
@@ -472,8 +472,8 @@ acpi_ut_copy_esimple_to_isimple(union acpi_object *external_object,
         case ACPI_TYPE_STRING:
 
                 internal_object->string.pointer =
-                    ACPI_MEM_CALLOCATE((acpi_size) external_object->string.
-                                       length + 1);
+                    ACPI_ALLOCATE_ZEROED((acpi_size) external_object->string.
+                                         length + 1);
                 if (!internal_object->string.pointer) {
                         goto error_exit;
                 }
@@ -488,7 +488,7 @@ acpi_ut_copy_esimple_to_isimple(union acpi_object *external_object,
         case ACPI_TYPE_BUFFER:
 
                 internal_object->buffer.pointer =
-                    ACPI_MEM_CALLOCATE(external_object->buffer.length);
+                    ACPI_ALLOCATE_ZEROED(external_object->buffer.length);
                 if (!internal_object->buffer.pointer) {
                         goto error_exit;
                 }
@@ -676,7 +676,7 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
                 if ((source_desc->buffer.pointer) &&
                     (source_desc->buffer.length)) {
                         dest_desc->buffer.pointer =
-                            ACPI_MEM_ALLOCATE(source_desc->buffer.length);
+                            ACPI_ALLOCATE(source_desc->buffer.length);
                         if (!dest_desc->buffer.pointer) {
                                 return (AE_NO_MEMORY);
                         }
@@ -697,8 +697,8 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
                  */
                 if (source_desc->string.pointer) {
                         dest_desc->string.pointer =
-                            ACPI_MEM_ALLOCATE((acpi_size) source_desc->string.
-                                              length + 1);
+                            ACPI_ALLOCATE((acpi_size) source_desc->string.
+                                          length + 1);
                         if (!dest_desc->string.pointer) {
                                 return (AE_NO_MEMORY);
                         }
@@ -805,9 +805,7 @@ acpi_ut_copy_ielement_to_ielement(u8 object_type,
                 /*
                  * Create the object array
                  */
-                target_object->package.elements =
-                    ACPI_MEM_CALLOCATE(((acpi_size) source_object->package.
-                                        count + 1) * sizeof(void *));
+                target_object->package.elements = ACPI_ALLOCATE_ZEROED(((acpi_size) source_object->package.count + 1) * sizeof(void *));
                 if (!target_object->package.elements) {
                         status = AE_NO_MEMORY;
                         goto error_exit;
@@ -865,10 +863,10 @@ acpi_ut_copy_ipackage_to_ipackage(union acpi_operand_object *source_obj,
         /*
          * Create the object array and walk the source package tree
          */
-        dest_obj->package.elements = ACPI_MEM_CALLOCATE(((acpi_size)
-                                                         source_obj->package.
-                                                         count +
-                                                         1) * sizeof(void *));
+        dest_obj->package.elements = ACPI_ALLOCATE_ZEROED(((acpi_size)
+                                                           source_obj->package.
+                                                           count +
+                                                           1) * sizeof(void *));
         if (!dest_obj->package.elements) {
                 ACPI_ERROR((AE_INFO, "Package allocation failure"));
                 return_ACPI_STATUS(AE_NO_MEMORY);
diff --git a/drivers/acpi/utilities/utdebug.c b/drivers/acpi/utilities/utdebug.c
index 6e92b2a3c0fd..a8c350643d57 100644
--- a/drivers/acpi/utilities/utdebug.c
+++ b/drivers/acpi/utilities/utdebug.c
@@ -41,8 +41,6 @@
  * POSSIBILITY OF SUCH DAMAGES.
  */
 
-#include <linux/module.h>
-
 #include <acpi/acpi.h>
 
 #define _COMPONENT          ACPI_UTILITIES
@@ -164,7 +162,7 @@ acpi_ut_debug_print(u32 requested_debug_level,
                     const char *function_name,
                     char *module_name, u32 component_id, char *format, ...)
 {
-        u32 thread_id;
+        acpi_thread_id thread_id;
         va_list args;
 
         /*
@@ -179,7 +177,6 @@ acpi_ut_debug_print(u32 requested_debug_level,
          * Thread tracking and context switch notification
          */
         thread_id = acpi_os_get_thread_id();
-
         if (thread_id != acpi_gbl_prev_thread_id) {
                 if (ACPI_LV_THREADS & acpi_dbg_level) {
                         acpi_os_printf
@@ -208,7 +205,7 @@ acpi_ut_debug_print(u32 requested_debug_level,
         acpi_os_vprintf(format, args);
 }
 
-EXPORT_SYMBOL(acpi_ut_debug_print);
+ACPI_EXPORT_SYMBOL(acpi_ut_debug_print)
 
 /*******************************************************************************
  *
@@ -228,7 +225,6 @@ EXPORT_SYMBOL(acpi_ut_debug_print);
  *              debug_print so that the same macros can be used.
  *
  ******************************************************************************/
-
 void ACPI_INTERNAL_VAR_XFACE
 acpi_ut_debug_print_raw(u32 requested_debug_level,
                         u32 line_number,
@@ -246,7 +242,7 @@ acpi_ut_debug_print_raw(u32 requested_debug_level,
         acpi_os_vprintf(format, args);
 }
 
-EXPORT_SYMBOL(acpi_ut_debug_print_raw);
+ACPI_EXPORT_SYMBOL(acpi_ut_debug_print_raw)
 
 /*******************************************************************************
  *
@@ -263,7 +259,6 @@ EXPORT_SYMBOL(acpi_ut_debug_print_raw);
  *              set in debug_level
  *
  ******************************************************************************/
-
 void
 acpi_ut_trace(u32 line_number,
               const char *function_name, char *module_name, u32 component_id)
@@ -277,7 +272,7 @@ acpi_ut_trace(u32 line_number,
                             component_id, "%s\n", acpi_gbl_fn_entry_str);
 }
 
-EXPORT_SYMBOL(acpi_ut_trace);
+ACPI_EXPORT_SYMBOL(acpi_ut_trace)
 
 /*******************************************************************************
  *
@@ -295,7 +290,6 @@ EXPORT_SYMBOL(acpi_ut_trace);
  *              set in debug_level
  *
  ******************************************************************************/
-
 void
 acpi_ut_trace_ptr(u32 line_number,
                   const char *function_name,
@@ -402,7 +396,7 @@ acpi_ut_exit(u32 line_number,
         acpi_gbl_nesting_level--;
 }
 
-EXPORT_SYMBOL(acpi_ut_exit);
+ACPI_EXPORT_SYMBOL(acpi_ut_exit)
 
 /*******************************************************************************
  *
@@ -420,7 +414,6 @@ EXPORT_SYMBOL(acpi_ut_exit);
  *              set in debug_level. Prints exit status also.
  *
  ******************************************************************************/
-
 void
 acpi_ut_status_exit(u32 line_number,
                     const char *function_name,
@@ -444,7 +437,7 @@ acpi_ut_status_exit(u32 line_number,
         acpi_gbl_nesting_level--;
 }
 
-EXPORT_SYMBOL(acpi_ut_status_exit);
+ACPI_EXPORT_SYMBOL(acpi_ut_status_exit)
 
 /*******************************************************************************
  *
@@ -462,7 +455,6 @@ EXPORT_SYMBOL(acpi_ut_status_exit);
  *              set in debug_level. Prints exit value also.
  *
  ******************************************************************************/
-
 void
 acpi_ut_value_exit(u32 line_number,
                    const char *function_name,
@@ -477,7 +469,7 @@ acpi_ut_value_exit(u32 line_number,
         acpi_gbl_nesting_level--;
 }
 
-EXPORT_SYMBOL(acpi_ut_value_exit);
+ACPI_EXPORT_SYMBOL(acpi_ut_value_exit)
 
 /*******************************************************************************
  *
@@ -495,7 +487,6 @@ EXPORT_SYMBOL(acpi_ut_value_exit);
  *              set in debug_level. Prints exit value also.
  *
  ******************************************************************************/
-
 void
 acpi_ut_ptr_exit(u32 line_number,
                  const char *function_name,
diff --git a/drivers/acpi/utilities/utdelete.c b/drivers/acpi/utilities/utdelete.c
index dbae72121cea..9c6867fcf009 100644
--- a/drivers/acpi/utilities/utdelete.c
+++ b/drivers/acpi/utilities/utdelete.c
@@ -236,7 +236,7 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
         if (obj_pointer) {
                 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
                                   "Deleting Object Subptr %p\n", obj_pointer));
-                ACPI_MEM_FREE(obj_pointer);
+                ACPI_FREE(obj_pointer);
         }
 
         /* Now the object can be safely deleted */
@@ -275,7 +275,7 @@ void acpi_ut_delete_internal_object_list(union acpi_operand_object **obj_list)
 
         /* Free the combined parameter pointer list and object array */
 
-        ACPI_MEM_FREE(obj_list);
+        ACPI_FREE(obj_list);
         return_VOID;
 }
 
diff --git a/drivers/acpi/utilities/uteval.c b/drivers/acpi/utilities/uteval.c
index 952ffdea93aa..68b9eff4b326 100644
--- a/drivers/acpi/utilities/uteval.c
+++ b/drivers/acpi/utilities/uteval.c
@@ -461,7 +461,7 @@ acpi_ut_execute_CID(struct acpi_namespace_node * device_node,
         size = (((count - 1) * sizeof(struct acpi_compatible_id)) +
                 sizeof(struct acpi_compatible_id_list));
 
-        cid_list = ACPI_MEM_CALLOCATE((acpi_size) size);
+        cid_list = ACPI_ALLOCATE_ZEROED((acpi_size) size);
         if (!cid_list) {
                 return_ACPI_STATUS(AE_NO_MEMORY);
         }
@@ -502,7 +502,7 @@ acpi_ut_execute_CID(struct acpi_namespace_node * device_node,
         /* Cleanup on error */
 
         if (ACPI_FAILURE(status)) {
-                ACPI_MEM_FREE(cid_list);
+                ACPI_FREE(cid_list);
         } else {
                 *return_cid_list = cid_list;
         }
diff --git a/drivers/acpi/utilities/utglobal.c b/drivers/acpi/utilities/utglobal.c
index 767c5e44a04b..5bc8da7acc6c 100644
--- a/drivers/acpi/utilities/utglobal.c
+++ b/drivers/acpi/utilities/utglobal.c
@@ -43,7 +43,6 @@
 
 #define DEFINE_ACPI_GLOBALS
 
-#include <linux/module.h>
 #include <acpi/acpi.h>
 #include <acpi/acnamesp.h>
 
@@ -144,12 +143,10 @@ const char *acpi_format_exception(acpi_status status)
 
 /* Debug switch - level and trace mask */
 u32 acpi_dbg_level = ACPI_DEBUG_DEFAULT;
-EXPORT_SYMBOL(acpi_dbg_level);
 
 /* Debug switch - layer (component) mask */
 
 u32 acpi_dbg_layer = ACPI_COMPONENT_DEFAULT | ACPI_ALL_DRIVERS;
-EXPORT_SYMBOL(acpi_dbg_layer);
 u32 acpi_gbl_nesting_level = 0;
 
 /* Debugger globals */
@@ -871,3 +868,6 @@ void acpi_ut_init_globals(void)
 
         return_VOID;
 }
+
+ACPI_EXPORT_SYMBOL(acpi_dbg_level)
+ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
diff --git a/drivers/acpi/utilities/utinit.c b/drivers/acpi/utilities/utinit.c
index ba771b4f39bc..40313de6977d 100644
--- a/drivers/acpi/utilities/utinit.c
+++ b/drivers/acpi/utilities/utinit.c
@@ -186,14 +186,14 @@ static void acpi_ut_terminate(void)
                 gpe_block = gpe_xrupt_info->gpe_block_list_head;
                 while (gpe_block) {
                         next_gpe_block = gpe_block->next;
-                        ACPI_MEM_FREE(gpe_block->event_info);
-                        ACPI_MEM_FREE(gpe_block->register_info);
-                        ACPI_MEM_FREE(gpe_block);
+                        ACPI_FREE(gpe_block->event_info);
+                        ACPI_FREE(gpe_block->register_info);
+                        ACPI_FREE(gpe_block);
 
                         gpe_block = next_gpe_block;
                 }
                 next_gpe_xrupt_info = gpe_xrupt_info->next;
-                ACPI_MEM_FREE(gpe_xrupt_info);
+                ACPI_FREE(gpe_xrupt_info);
                 gpe_xrupt_info = next_gpe_xrupt_info;
         }
 
diff --git a/drivers/acpi/utilities/utmisc.c b/drivers/acpi/utilities/utmisc.c
index 60f36130663c..77268ba86291 100644
--- a/drivers/acpi/utilities/utmisc.c
+++ b/drivers/acpi/utilities/utmisc.c
@@ -463,7 +463,7 @@ acpi_ut_display_init_pathname(u8 type,
         }
         acpi_os_printf("\n");
 
-        ACPI_MEM_FREE(buffer.pointer);
+        ACPI_FREE(buffer.pointer);
 }
 #endif
 
diff --git a/drivers/acpi/utilities/utmutex.c b/drivers/acpi/utilities/utmutex.c
index 45a7244df924..0ac6700a45f8 100644
--- a/drivers/acpi/utilities/utmutex.c
+++ b/drivers/acpi/utilities/utmutex.c
@@ -192,7 +192,7 @@ static acpi_status acpi_ut_delete_mutex(acpi_mutex_handle mutex_id)
 acpi_status acpi_ut_acquire_mutex(acpi_mutex_handle mutex_id)
 {
         acpi_status status;
-        u32 this_thread_id;
+        acpi_thread_id this_thread_id;
 
         ACPI_FUNCTION_NAME("ut_acquire_mutex");
 
@@ -275,7 +275,7 @@ acpi_status acpi_ut_acquire_mutex(acpi_mutex_handle mutex_id)
 acpi_status acpi_ut_release_mutex(acpi_mutex_handle mutex_id)
 {
         acpi_status status;
-        u32 this_thread_id;
+        acpi_thread_id this_thread_id;
 
         ACPI_FUNCTION_NAME("ut_release_mutex");
 
diff --git a/drivers/acpi/utilities/utobject.c b/drivers/acpi/utilities/utobject.c
index b1205a58028c..8e3dcbd23f5d 100644
--- a/drivers/acpi/utilities/utobject.c
+++ b/drivers/acpi/utilities/utobject.c
@@ -176,7 +176,7 @@ union acpi_operand_object *acpi_ut_create_buffer_object(acpi_size buffer_size)
 
                 /* Allocate the actual buffer */
 
-                buffer = ACPI_MEM_CALLOCATE(buffer_size);
+                buffer = ACPI_ALLOCATE_ZEROED(buffer_size);
                 if (!buffer) {
                         ACPI_ERROR((AE_INFO, "Could not allocate size %X",
                                     (u32) buffer_size));
@@ -228,7 +228,7 @@ union acpi_operand_object *acpi_ut_create_string_object(acpi_size string_size)
          * Allocate the actual string buffer -- (Size + 1) for NULL terminator.
          * NOTE: Zero-length strings are NULL terminated
          */
-        string = ACPI_MEM_CALLOCATE(string_size + 1);
+        string = ACPI_ALLOCATE_ZEROED(string_size + 1);
         if (!string) {
                 ACPI_ERROR((AE_INFO, "Could not allocate size %X",
                             (u32) string_size));
@@ -320,6 +320,7 @@ void *acpi_ut_allocate_object_desc_dbg(char *module_name,
         }
 
         /* Mark the descriptor type */
+
         memset(object, 0, sizeof(union acpi_operand_object));
         ACPI_SET_DESCRIPTOR_TYPE(object, ACPI_DESC_TYPE_OPERAND);
 
diff --git a/drivers/acpi/utilities/utxface.c b/drivers/acpi/utilities/utxface.c
index 308a960871be..ac90048a8a5b 100644
--- a/drivers/acpi/utilities/utxface.c
+++ b/drivers/acpi/utilities/utxface.c
@@ -41,8 +41,6 @@
  * POSSIBILITY OF SUCH DAMAGES.
  */
 
-#include <linux/module.h>
-
 #include <acpi/acpi.h>
 #include <acpi/acevents.h>
 #include <acpi/acnamesp.h>
@@ -109,6 +107,8 @@ acpi_status acpi_initialize_subsystem(void)
         return_ACPI_STATUS(status);
 }
 
+ACPI_EXPORT_SYMBOL(acpi_initialize_subsystem)
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_enable_subsystem
@@ -121,7 +121,6 @@ acpi_status acpi_initialize_subsystem(void)
  *              Puts system into ACPI mode if it isn't already.
  *
  ******************************************************************************/
-
 acpi_status acpi_enable_subsystem(u32 flags)
 {
         acpi_status status = AE_OK;
@@ -229,6 +228,8 @@ acpi_status acpi_enable_subsystem(u32 flags)
         return_ACPI_STATUS(status);
 }
 
+ACPI_EXPORT_SYMBOL(acpi_enable_subsystem)
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_initialize_objects
@@ -241,7 +242,6 @@ acpi_status acpi_enable_subsystem(u32 flags)
  *              objects and executing AML code for Regions, buffers, etc.
  *
  ******************************************************************************/
-
 acpi_status acpi_initialize_objects(u32 flags)
 {
         acpi_status status = AE_OK;
@@ -305,6 +305,8 @@ acpi_status acpi_initialize_objects(u32 flags)
         return_ACPI_STATUS(status);
 }
 
+ACPI_EXPORT_SYMBOL(acpi_initialize_objects)
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_terminate
@@ -316,7 +318,6 @@ acpi_status acpi_initialize_objects(u32 flags)
  * DESCRIPTION: Shutdown the ACPI subsystem.  Release all resources.
  *
  ******************************************************************************/
-
 acpi_status acpi_terminate(void)
 {
         acpi_status status;
@@ -348,6 +349,8 @@ acpi_status acpi_terminate(void)
         return_ACPI_STATUS(status);
 }
 
+ACPI_EXPORT_SYMBOL(acpi_terminate)
+
 #ifdef ACPI_FUTURE_USAGE
 /*******************************************************************************
  *
@@ -362,7 +365,6 @@ acpi_status acpi_terminate(void)
  *              initialized successfully.
  *
  ******************************************************************************/
-
 acpi_status acpi_subsystem_status(void)
 {
 
@@ -373,6 +375,8 @@ acpi_status acpi_subsystem_status(void)
         }
 }
 
+ACPI_EXPORT_SYMBOL(acpi_subsystem_status)
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_get_system_info
@@ -390,7 +394,6 @@ acpi_status acpi_subsystem_status(void)
  *              and the value of out_buffer is undefined.
  *
  ******************************************************************************/
-
 acpi_status acpi_get_system_info(struct acpi_buffer * out_buffer)
 {
         struct acpi_system_info *info_ptr;
@@ -456,7 +459,7 @@ acpi_status acpi_get_system_info(struct acpi_buffer * out_buffer)
         return_ACPI_STATUS(AE_OK);
 }
 
-EXPORT_SYMBOL(acpi_get_system_info);
+ACPI_EXPORT_SYMBOL(acpi_get_system_info)
 
 /*****************************************************************************
  *
@@ -472,7 +475,6 @@ EXPORT_SYMBOL(acpi_get_system_info);
  * TBD: When a second function is added, must save the Function also.
  *
  ****************************************************************************/
-
 acpi_status
 acpi_install_initialization_handler(acpi_init_handler handler, u32 function)
 {
@@ -489,6 +491,7 @@ acpi_install_initialization_handler(acpi_init_handler handler, u32 function)
         return AE_OK;
 }
 
+ACPI_EXPORT_SYMBOL(acpi_install_initialization_handler)
 #endif                          /*  ACPI_FUTURE_USAGE  */
 
 /*****************************************************************************
@@ -502,7 +505,6 @@ acpi_install_initialization_handler(acpi_init_handler handler, u32 function)
  * DESCRIPTION: Empty all caches (delete the cached objects)
  *
  ****************************************************************************/
-
 acpi_status acpi_purge_cached_objects(void)
 {
         ACPI_FUNCTION_TRACE("acpi_purge_cached_objects");
@@ -513,3 +515,5 @@ acpi_status acpi_purge_cached_objects(void)
         (void)acpi_os_purge_cache(acpi_gbl_ps_node_ext_cache);
         return_ACPI_STATUS(AE_OK);
 }
+
+ACPI_EXPORT_SYMBOL(acpi_purge_cached_objects)