ACPICA: delete utcache.c

ACPI_USE_LOCAL_CACHE will never be defined by the Linux kernel,
and thus utcache.c will always be dead code.

Signed-off-by: Len Brown <len.brown@intel.com>

2 files changed, 1 insertions, 316 deletions

diff --git a/drivers/acpi/utilities/Makefile b/drivers/acpi/utilities/Makefile
index 88eff14c4894..66a71a54cb0d 100644
--- a/drivers/acpi/utilities/Makefile
+++ b/drivers/acpi/utilities/Makefile
@@ -4,6 +4,6 @@
 
 obj-y := utalloc.o utdebug.o uteval.o utinit.o utmisc.o utxface.o \
                 utcopy.o utdelete.o utglobal.o utmath.o utobject.o \
-                utstate.o utmutex.o utobject.o utcache.o utresrc.o
+                utstate.o utmutex.o utobject.o utresrc.o
 
 EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/utilities/utcache.c b/drivers/acpi/utilities/utcache.c
deleted file mode 100644
index 1e549fd574a0..000000000000
--- a/drivers/acpi/utilities/utcache.c
+++ /dev/null
@@ -1,315 +0,0 @@
-/******************************************************************************
- *
- * Module Name: utcache - local cache allocation routines
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2008, Intel Corp.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions, and the following disclaimer,
- *    without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- *    substantially similar to the "NO WARRANTY" disclaimer below
- *    ("Disclaimer") and any redistribution must be conditioned upon
- *    including a substantially similar Disclaimer requirement for further
- *    binary redistribution.
- * 3. Neither the names of the above-listed copyright holders nor the names
- *    of any contributors may be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- */
-
-#include <acpi/acpi.h>
-#include <acpi/accommon.h>
-
-#define _COMPONENT          ACPI_UTILITIES
-ACPI_MODULE_NAME("utcache")
-#ifdef ACPI_USE_LOCAL_CACHE
-/*******************************************************************************
- *
- * FUNCTION:    acpi_os_create_cache
- *
- * PARAMETERS:  cache_name      - Ascii name for the cache
- *              object_size     - Size of each cached object
- *              max_depth       - Maximum depth of the cache (in objects)
- *              return_cache    - Where the new cache object is returned
- *
- * RETURN:      Status
- *
- * 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)
-{
-        struct acpi_memory_list *cache;
-
-        ACPI_FUNCTION_ENTRY();
-
-        if (!cache_name || !return_cache || (object_size < 16)) {
-                return (AE_BAD_PARAMETER);
-        }
-
-        /* Create the cache object */
-
-        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));
-        cache->link_offset = 8;
-        cache->list_name = cache_name;
-        cache->object_size = object_size;
-        cache->max_depth = max_depth;
-
-        *return_cache = cache;
-        return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_os_purge_cache
- *
- * PARAMETERS:  Cache           - Handle to cache object
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Free all objects within the requested cache.
- *
- ******************************************************************************/
-
-acpi_status acpi_os_purge_cache(struct acpi_memory_list * cache)
-{
-        char *next;
-
-        ACPI_FUNCTION_ENTRY();
-
-        if (!cache) {
-                return (AE_BAD_PARAMETER);
-        }
-
-        /* 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_FREE(cache->list_head);
-
-                cache->list_head = next;
-                cache->current_depth--;
-        }
-
-        return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_os_delete_cache
- *
- * PARAMETERS:  Cache           - Handle to cache object
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Free all objects within the requested cache and delete the
- *              cache object.
- *
- ******************************************************************************/
-
-acpi_status acpi_os_delete_cache(struct acpi_memory_list * cache)
-{
-        acpi_status status;
-
-        ACPI_FUNCTION_ENTRY();
-
-        /* Purge all objects in the cache */
-
-        status = acpi_os_purge_cache(cache);
-        if (ACPI_FAILURE(status)) {
-                return (status);
-        }
-
-        /* Now we can delete the cache object */
-
-        ACPI_FREE(cache);
-        return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_os_release_object
- *
- * PARAMETERS:  Cache       - Handle to cache object
- *              Object      - The object to be released
- *
- * RETURN:      None
- *
- * DESCRIPTION: Release an object to the specified cache.  If cache is full,
- *              the object is deleted.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_os_release_object(struct acpi_memory_list * cache, void *object)
-{
-        acpi_status status;
-
-        ACPI_FUNCTION_ENTRY();
-
-        if (!cache || !object) {
-                return (AE_BAD_PARAMETER);
-        }
-
-        /* If cache is full, just free this object */
-
-        if (cache->current_depth >= cache->max_depth) {
-                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)) {
-                        return (status);
-                }
-
-                /* Mark the object as 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;
-                cache->list_head = object;
-                cache->current_depth++;
-
-                (void)acpi_ut_release_mutex(ACPI_MTX_CACHES);
-        }
-
-        return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_os_acquire_object
- *
- * PARAMETERS:  Cache           - Handle to cache object
- *
- * RETURN:      the acquired object.  NULL on error
- *
- * DESCRIPTION: Get an object from the specified cache.  If cache is empty,
- *              the object is allocated.
- *
- ******************************************************************************/
-
-void *acpi_os_acquire_object(struct acpi_memory_list *cache)
-{
-        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)) {
-                return (NULL);
-        }
-
-        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->current_depth--;
-
-                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)) {
-                        return (NULL);
-                }
-
-                /* Clear (zero) the previously used Object */
-
-                ACPI_MEMSET(object, 0, cache->object_size);
-        } else {
-                /* The cache is empty, create a new object */
-
-                ACPI_MEM_TRACKING(cache->total_allocated++);
-
-#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
-
-                /* Avoid deadlock with ACPI_ALLOCATE_ZEROED */
-
-                status = acpi_ut_release_mutex(ACPI_MTX_CACHES);
-                if (ACPI_FAILURE(status)) {
-                        return (NULL);
-                }
-
-                object = ACPI_ALLOCATE_ZEROED(cache->object_size);
-                if (!object) {
-                        return (NULL);
-                }
-        }
-
-        return (object);
-}
-#endif                          /* ACPI_USE_LOCAL_CACHE */