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authorRobert Moore <robert.moore@intel.com>2005-06-24 00:00:00 -0400
committerLen Brown <len.brown@intel.com>2005-07-13 23:45:36 -0400
commit73459f73e5d1602c59ebec114fc45185521353c1 (patch)
tree56c2183e345784d2be09c2f5d2530cf36221c55e /drivers/acpi/utilities/utalloc.c
parent88ac00f5a841dcfc5c682000f4a6add0add8caac (diff)
ACPICA 20050617-0624 from Bob Moore <robert.moore@intel.com>
ACPICA 20050617: Moved the object cache operations into the OS interface layer (OSL) to allow the host OS to handle these operations if desired (for example, the Linux OSL will invoke the slab allocator). This support is optional; the compile time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache code in the ACPI CA core. The new OSL interfaces are shown below. See utalloc.c for an example implementation, and acpiosxf.h for the exact interface definitions. Thanks to Alexey Starikovskiy. acpi_os_create_cache acpi_os_delete_cache acpi_os_purge_cache acpi_os_acquire_object acpi_os_release_object Modified the interfaces to acpi_os_acquire_lock and acpi_os_release_lock to return and restore a flags parameter. This fits better with many OS lock models. Note: the current execution state (interrupt handler or not) is no longer passed to these interfaces. If necessary, the OSL must determine this state by itself, a simple and fast operation. Thanks to Alexey Starikovskiy. Fixed a problem in the ACPI table handling where a valid XSDT was assumed present if the revision of the RSDP was 2 or greater. According to the ACPI specification, the XSDT is optional in all cases, and the table manager therefore now checks for both an RSDP >=2 and a valid XSDT pointer. Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain only the RSDT. Fixed an interpreter problem with the Mid() operator in the case of an input string where the resulting output string is of zero length. It now correctly returns a valid, null terminated string object instead of a string object with a null pointer. Fixed a problem with the control method argument handling to allow a store to an Arg object that already contains an object of type Device. The Device object is now correctly overwritten. Previously, an error was returned. ACPICA 20050624: Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for the host-defined cache object. This allows the OSL implementation to define and type this object in any manner desired, simplifying the OSL implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for Linux, and should be defined in the OS-specific header file for other operating systems as required. Changed the interface to AcpiOsAcquireObject to directly return the requested object as the function return (instead of ACPI_STATUS.) This change was made for performance reasons, since this is the purpose of the interface in the first place. acpi_os_acquire_object is now similar to the acpi_os_allocate interface. Thanks to Alexey Starikovskiy. Modified the initialization sequence in acpi_initialize_subsystem to call the OSL interface acpi_osl_initialize first, before any local initialization. This change was required because the global initialization now calls OSL interfaces. Restructured the code base to split some files because of size and/or because the code logically belonged in a separate file. New files are listed below. utilities/utcache.c /* Local cache interfaces */ utilities/utmutex.c /* Local mutex support */ utilities/utstate.c /* State object support */ parser/psloop.c /* Main AML parse loop */ Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/utilities/utalloc.c')
-rw-r--r--drivers/acpi/utilities/utalloc.c304
1 files changed, 116 insertions, 188 deletions
diff --git a/drivers/acpi/utilities/utalloc.c b/drivers/acpi/utilities/utalloc.c
index c4e7f989a2b..5061c6f0ee6 100644
--- a/drivers/acpi/utilities/utalloc.c
+++ b/drivers/acpi/utilities/utalloc.c
@@ -1,6 +1,6 @@
/******************************************************************************
*
- * Module Name: utalloc - local cache and memory allocation routines
+ * Module Name: utalloc - local memory allocation routines
*
*****************************************************************************/
@@ -52,12 +52,10 @@
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
static struct acpi_debug_mem_block *
acpi_ut_find_allocation (
- u32 list_id,
void *allocation);
static acpi_status
acpi_ut_track_allocation (
- u32 list_id,
struct acpi_debug_mem_block *address,
acpi_size size,
u8 alloc_type,
@@ -67,206 +65,118 @@ acpi_ut_track_allocation (
static acpi_status
acpi_ut_remove_allocation (
- u32 list_id,
struct acpi_debug_mem_block *address,
u32 component,
char *module,
u32 line);
#endif /* ACPI_DBG_TRACK_ALLOCATIONS */
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_release_to_cache
- *
- * PARAMETERS: list_id - Memory list/cache ID
- * Object - The object to be released
- *
- * RETURN: None
- *
- * DESCRIPTION: Release an object to the specified cache. If cache is full,
- * the object is deleted.
- *
- ******************************************************************************/
-
-void
-acpi_ut_release_to_cache (
- u32 list_id,
- void *object)
-{
- struct acpi_memory_list *cache_info;
-
-
- ACPI_FUNCTION_ENTRY ();
-
-
- cache_info = &acpi_gbl_memory_lists[list_id];
-
-#ifdef ACPI_ENABLE_OBJECT_CACHE
-
- /* If walk cache is full, just free this wallkstate object */
-
- if (cache_info->cache_depth >= cache_info->max_cache_depth) {
- ACPI_MEM_FREE (object);
- ACPI_MEM_TRACKING (cache_info->total_freed++);
- }
-
- /* Otherwise put this object back into the cache */
-
- else {
- if (ACPI_FAILURE (acpi_ut_acquire_mutex (ACPI_MTX_CACHES))) {
- return;
- }
-
- /* Mark the object as cached */
-
- ACPI_MEMSET (object, 0xCA, cache_info->object_size);
- ACPI_SET_DESCRIPTOR_TYPE (object, ACPI_DESC_TYPE_CACHED);
-
- /* Put the object at the head of the cache list */
-
- * (ACPI_CAST_INDIRECT_PTR (char,
- &(((char *) object)[cache_info->link_offset]))) = cache_info->list_head;
- cache_info->list_head = object;
- cache_info->cache_depth++;
-
- (void) acpi_ut_release_mutex (ACPI_MTX_CACHES);
- }
-
-#else
-
- /* Object cache is disabled; just free the object */
-
- ACPI_MEM_FREE (object);
- ACPI_MEM_TRACKING (cache_info->total_freed++);
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+static acpi_status
+acpi_ut_create_list (
+ char *list_name,
+ u16 object_size,
+ acpi_handle *return_cache);
#endif
-}
/*******************************************************************************
*
- * FUNCTION: acpi_ut_acquire_from_cache
+ * FUNCTION: acpi_ut_create_caches
*
- * PARAMETERS: list_id - Memory list ID
+ * PARAMETERS: None
*
- * RETURN: A requested object. NULL if the object could not be
- * allocated.
+ * RETURN: Status
*
- * DESCRIPTION: Get an object from the specified cache. If cache is empty,
- * the object is allocated.
+ * DESCRIPTION: Create all local caches
*
******************************************************************************/
-void *
-acpi_ut_acquire_from_cache (
- u32 list_id)
+acpi_status
+acpi_ut_create_caches (
+ void)
{
- struct acpi_memory_list *cache_info;
- void *object;
-
-
- ACPI_FUNCTION_NAME ("ut_acquire_from_cache");
+ acpi_status status;
- cache_info = &acpi_gbl_memory_lists[list_id];
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
-#ifdef ACPI_ENABLE_OBJECT_CACHE
+ /* Memory allocation lists */
- if (ACPI_FAILURE (acpi_ut_acquire_mutex (ACPI_MTX_CACHES))) {
- return (NULL);
+ status = acpi_ut_create_list ("Acpi-Global", 0,
+ &acpi_gbl_global_list);
+ if (ACPI_FAILURE (status)) {
+ return (status);
}
- ACPI_MEM_TRACKING (cache_info->cache_requests++);
-
- /* Check the cache first */
-
- if (cache_info->list_head) {
- /* There is an object available, use it */
-
- object = cache_info->list_head;
- cache_info->list_head = *(ACPI_CAST_INDIRECT_PTR (char,
- &(((char *) object)[cache_info->link_offset])));
-
- ACPI_MEM_TRACKING (cache_info->cache_hits++);
- cache_info->cache_depth--;
-
-#ifdef ACPI_DBG_TRACK_ALLOCATIONS
- ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Object %p from %s\n",
- object, acpi_gbl_memory_lists[list_id].list_name));
+ status = acpi_ut_create_list ("Acpi-Namespace", sizeof (struct acpi_namespace_node),
+ &acpi_gbl_ns_node_list);
+ if (ACPI_FAILURE (status)) {
+ return (status);
+ }
#endif
- if (ACPI_FAILURE (acpi_ut_release_mutex (ACPI_MTX_CACHES))) {
- return (NULL);
- }
-
- /* Clear (zero) the previously used Object */
+ /* Object Caches, for frequently used objects */
- ACPI_MEMSET (object, 0, cache_info->object_size);
+ status = acpi_os_create_cache ("acpi_state", sizeof (union acpi_generic_state),
+ ACPI_MAX_STATE_CACHE_DEPTH, &acpi_gbl_state_cache);
+ if (ACPI_FAILURE (status)) {
+ return (status);
}
- else {
- /* The cache is empty, create a new object */
-
- /* Avoid deadlock with ACPI_MEM_CALLOCATE */
-
- if (ACPI_FAILURE (acpi_ut_release_mutex (ACPI_MTX_CACHES))) {
- return (NULL);
- }
-
- object = ACPI_MEM_CALLOCATE (cache_info->object_size);
- ACPI_MEM_TRACKING (cache_info->total_allocated++);
+ status = acpi_os_create_cache ("acpi_parse", sizeof (struct acpi_parse_obj_common),
+ ACPI_MAX_PARSE_CACHE_DEPTH, &acpi_gbl_ps_node_cache);
+ if (ACPI_FAILURE (status)) {
+ return (status);
}
-#else
-
- /* Object cache is disabled; just allocate the object */
+ status = acpi_os_create_cache ("acpi_parse_ext", sizeof (struct acpi_parse_obj_named),
+ ACPI_MAX_EXTPARSE_CACHE_DEPTH, &acpi_gbl_ps_node_ext_cache);
+ if (ACPI_FAILURE (status)) {
+ return (status);
+ }
- object = ACPI_MEM_CALLOCATE (cache_info->object_size);
- ACPI_MEM_TRACKING (cache_info->total_allocated++);
-#endif
+ status = acpi_os_create_cache ("acpi_operand", sizeof (union acpi_operand_object),
+ ACPI_MAX_OBJECT_CACHE_DEPTH, &acpi_gbl_operand_cache);
+ if (ACPI_FAILURE (status)) {
+ return (status);
+ }
- return (object);
+ return (AE_OK);
}
-#ifdef ACPI_ENABLE_OBJECT_CACHE
/*******************************************************************************
*
- * FUNCTION: acpi_ut_delete_generic_cache
+ * FUNCTION: acpi_ut_delete_caches
*
- * PARAMETERS: list_id - Memory list ID
+ * PARAMETERS: None
*
- * RETURN: None
+ * RETURN: Status
*
- * DESCRIPTION: Free all objects within the requested cache.
+ * DESCRIPTION: Purge and delete all local caches
*
******************************************************************************/
-void
-acpi_ut_delete_generic_cache (
- u32 list_id)
+acpi_status
+acpi_ut_delete_caches (
+ void)
{
- struct acpi_memory_list *cache_info;
- char *next;
+ (void) acpi_os_delete_cache (acpi_gbl_state_cache);
+ acpi_gbl_state_cache = NULL;
- ACPI_FUNCTION_ENTRY ();
-
+ (void) acpi_os_delete_cache (acpi_gbl_operand_cache);
+ acpi_gbl_operand_cache = NULL;
- cache_info = &acpi_gbl_memory_lists[list_id];
- while (cache_info->list_head) {
- /* Delete one cached state object */
+ (void) acpi_os_delete_cache (acpi_gbl_ps_node_cache);
+ acpi_gbl_ps_node_cache = NULL;
- next = *(ACPI_CAST_INDIRECT_PTR (char,
- &(((char *) cache_info->list_head)[cache_info->link_offset])));
- ACPI_MEM_FREE (cache_info->list_head);
+ (void) acpi_os_delete_cache (acpi_gbl_ps_node_ext_cache);
+ acpi_gbl_ps_node_ext_cache = NULL;
- cache_info->list_head = next;
- cache_info->cache_depth--;
- }
+ return (AE_OK);
}
-#endif
-
/*******************************************************************************
*
@@ -500,6 +410,43 @@ acpi_ut_callocate (
* occurs in the body of acpi_ut_free.
*/
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_create_list
+ *
+ * PARAMETERS: cache_name - Ascii name for the cache
+ * object_size - Size of each cached object
+ * return_cache - Where the new cache object is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Create a local memory list for tracking purposed
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_create_list (
+ char *list_name,
+ u16 object_size,
+ acpi_handle *return_cache)
+{
+ struct acpi_memory_list *cache;
+
+
+ cache = acpi_os_allocate (sizeof (struct acpi_memory_list));
+ if (!cache) {
+ return (AE_NO_MEMORY);
+ }
+
+ ACPI_MEMSET (cache, 0, sizeof (struct acpi_memory_list));
+
+ cache->list_name = list_name;
+ cache->object_size = object_size;
+
+ *return_cache = cache;
+ return (AE_OK);
+}
+
/*******************************************************************************
*
@@ -533,15 +480,15 @@ acpi_ut_allocate_and_track (
return (NULL);
}
- status = acpi_ut_track_allocation (ACPI_MEM_LIST_GLOBAL, allocation, size,
+ status = acpi_ut_track_allocation (allocation, size,
ACPI_MEM_MALLOC, component, module, line);
if (ACPI_FAILURE (status)) {
acpi_os_free (allocation);
return (NULL);
}
- acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].total_allocated++;
- acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].current_total_size += (u32) size;
+ acpi_gbl_global_list->total_allocated++;
+ acpi_gbl_global_list->current_total_size += (u32) size;
return ((void *) &allocation->user_space);
}
@@ -583,15 +530,15 @@ acpi_ut_callocate_and_track (
return (NULL);
}
- status = acpi_ut_track_allocation (ACPI_MEM_LIST_GLOBAL, allocation, size,
+ status = acpi_ut_track_allocation (allocation, size,
ACPI_MEM_CALLOC, component, module, line);
if (ACPI_FAILURE (status)) {
acpi_os_free (allocation);
return (NULL);
}
- acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].total_allocated++;
- acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].current_total_size += (u32) size;
+ acpi_gbl_global_list->total_allocated++;
+ acpi_gbl_global_list->current_total_size += (u32) size;
return ((void *) &allocation->user_space);
}
@@ -636,10 +583,10 @@ acpi_ut_free_and_track (
debug_block = ACPI_CAST_PTR (struct acpi_debug_mem_block,
(((char *) allocation) - sizeof (struct acpi_debug_mem_header)));
- acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].total_freed++;
- acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].current_total_size -= debug_block->size;
+ acpi_gbl_global_list->total_freed++;
+ acpi_gbl_global_list->current_total_size -= debug_block->size;
- status = acpi_ut_remove_allocation (ACPI_MEM_LIST_GLOBAL, debug_block,
+ status = acpi_ut_remove_allocation (debug_block,
component, module, line);
if (ACPI_FAILURE (status)) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not free memory, %s\n",
@@ -658,8 +605,7 @@ acpi_ut_free_and_track (
*
* FUNCTION: acpi_ut_find_allocation
*
- * PARAMETERS: list_id - Memory list to search
- * Allocation - Address of allocated memory
+ * PARAMETERS: Allocation - Address of allocated memory
*
* RETURN: A list element if found; NULL otherwise.
*
@@ -669,7 +615,6 @@ acpi_ut_free_and_track (
static struct acpi_debug_mem_block *
acpi_ut_find_allocation (
- u32 list_id,
void *allocation)
{
struct acpi_debug_mem_block *element;
@@ -678,11 +623,7 @@ acpi_ut_find_allocation (
ACPI_FUNCTION_ENTRY ();
- if (list_id > ACPI_MEM_LIST_MAX) {
- return (NULL);
- }
-
- element = acpi_gbl_memory_lists[list_id].list_head;
+ element = acpi_gbl_global_list->list_head;
/* Search for the address. */
@@ -702,8 +643,7 @@ acpi_ut_find_allocation (
*
* FUNCTION: acpi_ut_track_allocation
*
- * PARAMETERS: list_id - Memory list to search
- * Allocation - Address of allocated memory
+ * PARAMETERS: Allocation - Address of allocated memory
* Size - Size of the allocation
* alloc_type - MEM_MALLOC or MEM_CALLOC
* Component - Component type of caller
@@ -718,7 +658,6 @@ acpi_ut_find_allocation (
static acpi_status
acpi_ut_track_allocation (
- u32 list_id,
struct acpi_debug_mem_block *allocation,
acpi_size size,
u8 alloc_type,
@@ -734,11 +673,7 @@ acpi_ut_track_allocation (
ACPI_FUNCTION_TRACE_PTR ("ut_track_allocation", allocation);
- if (list_id > ACPI_MEM_LIST_MAX) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
- }
-
- mem_list = &acpi_gbl_memory_lists[list_id];
+ mem_list = acpi_gbl_global_list;
status = acpi_ut_acquire_mutex (ACPI_MTX_MEMORY);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
@@ -748,8 +683,7 @@ acpi_ut_track_allocation (
* Search list for this address to make sure it is not already on the list.
* This will catch several kinds of problems.
*/
-
- element = acpi_ut_find_allocation (list_id, allocation);
+ element = acpi_ut_find_allocation (allocation);
if (element) {
ACPI_REPORT_ERROR ((
"ut_track_allocation: Allocation already present in list! (%p)\n",
@@ -793,8 +727,7 @@ unlock_and_exit:
*
* FUNCTION: acpi_ut_remove_allocation
*
- * PARAMETERS: list_id - Memory list to search
- * Allocation - Address of allocated memory
+ * PARAMETERS: Allocation - Address of allocated memory
* Component - Component type of caller
* Module - Source file name of caller
* Line - Line number of caller
@@ -807,7 +740,6 @@ unlock_and_exit:
static acpi_status
acpi_ut_remove_allocation (
- u32 list_id,
struct acpi_debug_mem_block *allocation,
u32 component,
char *module,
@@ -820,11 +752,7 @@ acpi_ut_remove_allocation (
ACPI_FUNCTION_TRACE ("ut_remove_allocation");
- if (list_id > ACPI_MEM_LIST_MAX) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
- }
-
- mem_list = &acpi_gbl_memory_lists[list_id];
+ mem_list = acpi_gbl_global_list;
if (NULL == mem_list->list_head) {
/* No allocations! */
@@ -959,7 +887,7 @@ acpi_ut_dump_allocations (
return;
}
- element = acpi_gbl_memory_lists[0].list_head;
+ element = acpi_gbl_global_list->list_head;
while (element) {
if ((element->component & component) &&
((module == NULL) || (0 == ACPI_STRCMP (module, element->module)))) {