X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Facpi%2Futilities%2Futcache.c;h=285a0f5317604c21f088d273f611d53d9eff494d;hb=136c4bbfe69336cd1d0b076cfc0ef6b92d576a19;hp=c0df0585c68344b742a7c810567ec37b206f6bc1;hpb=f9f4601f331aa1226d7a798a01950efbb388f07f;p=safe%2Fjmp%2Flinux-2.6

diff --git a/drivers/acpi/utilities/utcache.c b/drivers/acpi/utilities/utcache.c
index c0df058..285a0f5 100644
--- a/drivers/acpi/utilities/utcache.c
+++ b/drivers/acpi/utilities/utcache.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2005, R. Byron Moore
+ * Copyright (C) 2000 - 2007, R. Byron Moore
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -41,13 +41,10 @@
  * POSSIBILITY OF SUCH DAMAGES.
  */
 
-
 #include <acpi/acpi.h>
 
 #define _COMPONENT          ACPI_UTILITIES
-	 ACPI_MODULE_NAME    ("utcache")
-
-
+ACPI_MODULE_NAME("utcache")
 #ifdef ACPI_USE_LOCAL_CACHE
 /*******************************************************************************
  *
@@ -63,19 +60,14 @@
  * DESCRIPTION: Create a cache object
  *
  ******************************************************************************/
-
 acpi_status
-acpi_os_create_cache (
-	char                            *cache_name,
-	u16                             object_size,
-	u16                             max_depth,
-	struct acpi_memory_list         **return_cache)
+acpi_os_create_cache(char *cache_name,
+		     u16 object_size,
+		     u16 max_depth, struct acpi_memory_list ** return_cache)
 {
-	struct acpi_memory_list         *cache;
-
-
-	ACPI_FUNCTION_ENTRY ();
+	struct acpi_memory_list *cache;
 
+	ACPI_FUNCTION_ENTRY();
 
 	if (!cache_name || !return_cache || (object_size < 16)) {
 		return (AE_BAD_PARAMETER);
@@ -83,24 +75,23 @@ acpi_os_create_cache (
 
 	/* Create the cache object */
 
-	cache = acpi_os_allocate (sizeof (struct acpi_memory_list));
+	cache = acpi_os_allocate(sizeof(struct acpi_memory_list));
 	if (!cache) {
 		return (AE_NO_MEMORY);
 	}
 
 	/* Populate the cache object and return it */
 
-	ACPI_MEMSET (cache, 0, sizeof (struct acpi_memory_list));
+	ACPI_MEMSET(cache, 0, sizeof(struct acpi_memory_list));
 	cache->link_offset = 8;
-	cache->list_name  = cache_name;
+	cache->list_name = cache_name;
 	cache->object_size = object_size;
-	cache->max_depth  = max_depth;
+	cache->max_depth = max_depth;
 
 	*return_cache = cache;
 	return (AE_OK);
 }
 
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_os_purge_cache
@@ -113,15 +104,11 @@ acpi_os_create_cache (
  *
  ******************************************************************************/
 
-acpi_status
-acpi_os_purge_cache (
-	struct acpi_memory_list         *cache)
+acpi_status acpi_os_purge_cache(struct acpi_memory_list * cache)
 {
-	char                            *next;
-
-
-	ACPI_FUNCTION_ENTRY ();
+	char *next;
 
+	ACPI_FUNCTION_ENTRY();
 
 	if (!cache) {
 		return (AE_BAD_PARAMETER);
@@ -130,11 +117,14 @@ acpi_os_purge_cache (
 	/* Walk the list of objects in this cache */
 
 	while (cache->list_head) {
+
 		/* Delete and unlink one cached state object */
 
-		next = *(ACPI_CAST_INDIRECT_PTR (char,
-				 &(((char *) cache->list_head)[cache->link_offset])));
-		ACPI_MEM_FREE (cache->list_head);
+		next = *(ACPI_CAST_INDIRECT_PTR(char,
+						&(((char *)cache->
+						   list_head)[cache->
+							      link_offset])));
+		ACPI_FREE(cache->list_head);
 
 		cache->list_head = next;
 		cache->current_depth--;
@@ -143,7 +133,6 @@ acpi_os_purge_cache (
 	return (AE_OK);
 }
 
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_os_delete_cache
@@ -157,30 +146,25 @@ acpi_os_purge_cache (
  *
  ******************************************************************************/
 
-acpi_status
-acpi_os_delete_cache (
-	struct acpi_memory_list         *cache)
+acpi_status acpi_os_delete_cache(struct acpi_memory_list * cache)
 {
-	acpi_status                     status;
-
+	acpi_status status;
 
-	ACPI_FUNCTION_ENTRY ();
+	ACPI_FUNCTION_ENTRY();
 
+	/* Purge all objects in the cache */
 
-   /* Purge all objects in the cache */
-
-	status = acpi_os_purge_cache (cache);
-	if (ACPI_FAILURE (status)) {
+	status = acpi_os_purge_cache(cache);
+	if (ACPI_FAILURE(status)) {
 		return (status);
 	}
 
 	/* Now we can delete the cache object */
 
-	acpi_os_free (cache);
+	ACPI_FREE(cache);
 	return (AE_OK);
 }
 
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_os_release_object
@@ -196,15 +180,11 @@ acpi_os_delete_cache (
  ******************************************************************************/
 
 acpi_status
-acpi_os_release_object (
-	struct acpi_memory_list         *cache,
-	void                            *object)
+acpi_os_release_object(struct acpi_memory_list * cache, void *object)
 {
-	acpi_status                     status;
-
-
-	ACPI_FUNCTION_ENTRY ();
+	acpi_status status;
 
+	ACPI_FUNCTION_ENTRY();
 
 	if (!cache || !object) {
 		return (AE_BAD_PARAMETER);
@@ -213,37 +193,38 @@ acpi_os_release_object (
 	/* If cache is full, just free this object */
 
 	if (cache->current_depth >= cache->max_depth) {
-		ACPI_MEM_FREE (object);
-		ACPI_MEM_TRACKING (cache->total_freed++);
+		ACPI_FREE(object);
+		ACPI_MEM_TRACKING(cache->total_freed++);
 	}
 
 	/* Otherwise put this object back into the cache */
 
 	else {
-		status = acpi_ut_acquire_mutex (ACPI_MTX_CACHES);
-		if (ACPI_FAILURE (status)) {
+		status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
+		if (ACPI_FAILURE(status)) {
 			return (status);
 		}
 
 		/* Mark the object as cached */
 
-		ACPI_MEMSET (object, 0xCA, cache->object_size);
-		ACPI_SET_DESCRIPTOR_TYPE (object, ACPI_DESC_TYPE_CACHED);
+		ACPI_MEMSET(object, 0xCA, cache->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->link_offset]))) = cache->list_head;
+		*(ACPI_CAST_INDIRECT_PTR(char,
+					 &(((char *)object)[cache->
+							    link_offset]))) =
+		    cache->list_head;
 		cache->list_head = object;
 		cache->current_depth++;
 
-		(void) acpi_ut_release_mutex (ACPI_MTX_CACHES);
+		(void)acpi_ut_release_mutex(ACPI_MTX_CACHES);
 	}
 
 	return (AE_OK);
 }
 
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_os_acquire_object
@@ -257,65 +238,72 @@ acpi_os_release_object (
  *
  ******************************************************************************/
 
-void *
-acpi_os_acquire_object (
-	struct acpi_memory_list         *cache)
+void *acpi_os_acquire_object(struct acpi_memory_list *cache)
 {
-	acpi_status                     status;
-	void                            *object;
-
-
-	ACPI_FUNCTION_NAME ("os_acquire_object");
+	acpi_status status;
+	void *object;
 
+	ACPI_FUNCTION_NAME(os_acquire_object);
 
 	if (!cache) {
 		return (NULL);
 	}
 
-	status = acpi_ut_acquire_mutex (ACPI_MTX_CACHES);
-	if (ACPI_FAILURE (status)) {
+	status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
+	if (ACPI_FAILURE(status)) {
 		return (NULL);
 	}
 
-	ACPI_MEM_TRACKING (cache->requests++);
+	ACPI_MEM_TRACKING(cache->requests++);
 
 	/* Check the cache first */
 
 	if (cache->list_head) {
+
 		/* There is an object available, use it */
 
 		object = cache->list_head;
-		cache->list_head = *(ACPI_CAST_INDIRECT_PTR (char,
-				 &(((char *) object)[cache->link_offset])));
+		cache->list_head = *(ACPI_CAST_INDIRECT_PTR(char,
+							    &(((char *)
+							       object)[cache->
+								       link_offset])));
 
 		cache->current_depth--;
 
-		ACPI_MEM_TRACKING (cache->hits++);
-		ACPI_MEM_TRACKING (ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
-			"Object %p from %s cache\n", object, cache->list_name)));
+		ACPI_MEM_TRACKING(cache->hits++);
+		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+				  "Object %p from %s cache\n", object,
+				  cache->list_name));
 
-		status = acpi_ut_release_mutex (ACPI_MTX_CACHES);
-		if (ACPI_FAILURE (status)) {
+		status = acpi_ut_release_mutex(ACPI_MTX_CACHES);
+		if (ACPI_FAILURE(status)) {
 			return (NULL);
 		}
 
 		/* Clear (zero) the previously used Object */
 
-		ACPI_MEMSET (object, 0, cache->object_size);
-	}
-	else {
+		ACPI_MEMSET(object, 0, cache->object_size);
+	} else {
 		/* The cache is empty, create a new object */
 
-		ACPI_MEM_TRACKING (cache->total_allocated++);
+		ACPI_MEM_TRACKING(cache->total_allocated++);
 
-		/* Avoid deadlock with ACPI_MEM_CALLOCATE */
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+		if ((cache->total_allocated - cache->total_freed) >
+		    cache->max_occupied) {
+			cache->max_occupied =
+			    cache->total_allocated - cache->total_freed;
+		}
+#endif
 
-		status = acpi_ut_release_mutex (ACPI_MTX_CACHES);
-		if (ACPI_FAILURE (status)) {
+		/* 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);
 		}
@@ -323,6 +311,4 @@ acpi_os_acquire_object (
 
 	return (object);
 }
-#endif /* ACPI_USE_LOCAL_CACHE */
-
-
+#endif				/* ACPI_USE_LOCAL_CACHE */