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f5c1e1c5a6
ACPICA commit b2294cae776f5a66a7697414b21949d307e6856f This patch removes unwanted spaces for typedef. This solution doesn't cover function types. Note that the linuxize result of this commit is very giant and should have many conflicts against the current Linux upstream. Thus it is required to modify the linuxize result of this commit and the commits around it manually in order to have them merged to the Linux upstream. Since this is very costy, we should do this only once, and if we can't ensure to do this only once, we need to revert the Linux code to the wrong indentation result before merging the linuxize result of this commit. Lv Zheng. Link: https://github.com/acpica/acpica/commit/b2294cae Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
313 lines
8.3 KiB
C
313 lines
8.3 KiB
C
/******************************************************************************
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*
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* Module Name: utcache - local cache allocation routines
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2016, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME("utcache")
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#ifdef ACPI_USE_LOCAL_CACHE
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/*******************************************************************************
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*
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* FUNCTION: acpi_os_create_cache
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*
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* PARAMETERS: cache_name - Ascii name for the cache
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* object_size - Size of each cached object
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* max_depth - Maximum depth of the cache (in objects)
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* return_cache - Where the new cache object is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Create a cache object
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*
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******************************************************************************/
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acpi_status
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acpi_os_create_cache(char *cache_name,
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u16 object_size,
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u16 max_depth, struct acpi_memory_list **return_cache)
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{
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struct acpi_memory_list *cache;
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ACPI_FUNCTION_ENTRY();
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if (!cache_name || !return_cache || (object_size < 16)) {
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return (AE_BAD_PARAMETER);
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}
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/* Create the cache object */
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cache = acpi_os_allocate(sizeof(struct acpi_memory_list));
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if (!cache) {
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return (AE_NO_MEMORY);
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}
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/* Populate the cache object and return it */
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memset(cache, 0, sizeof(struct acpi_memory_list));
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cache->list_name = cache_name;
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cache->object_size = object_size;
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cache->max_depth = max_depth;
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*return_cache = cache;
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_os_purge_cache
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*
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* PARAMETERS: cache - Handle to cache object
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*
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* RETURN: Status
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*
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* DESCRIPTION: Free all objects within the requested cache.
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*
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******************************************************************************/
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acpi_status acpi_os_purge_cache(struct acpi_memory_list *cache)
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{
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void *next;
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acpi_status status;
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ACPI_FUNCTION_ENTRY();
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if (!cache) {
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return (AE_BAD_PARAMETER);
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}
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status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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/* Walk the list of objects in this cache */
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while (cache->list_head) {
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/* Delete and unlink one cached state object */
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next = ACPI_GET_DESCRIPTOR_PTR(cache->list_head);
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ACPI_FREE(cache->list_head);
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cache->list_head = next;
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cache->current_depth--;
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}
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(void)acpi_ut_release_mutex(ACPI_MTX_CACHES);
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_os_delete_cache
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*
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* PARAMETERS: cache - Handle to cache object
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*
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* RETURN: Status
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*
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* DESCRIPTION: Free all objects within the requested cache and delete the
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* cache object.
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*
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******************************************************************************/
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acpi_status acpi_os_delete_cache(struct acpi_memory_list *cache)
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{
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acpi_status status;
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ACPI_FUNCTION_ENTRY();
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/* Purge all objects in the cache */
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status = acpi_os_purge_cache(cache);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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/* Now we can delete the cache object */
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acpi_os_free(cache);
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_os_release_object
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*
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* PARAMETERS: cache - Handle to cache object
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* object - The object to be released
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*
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* RETURN: None
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*
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* DESCRIPTION: Release an object to the specified cache. If cache is full,
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* the object is deleted.
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*
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******************************************************************************/
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acpi_status acpi_os_release_object(struct acpi_memory_list *cache, void *object)
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{
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acpi_status status;
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ACPI_FUNCTION_ENTRY();
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if (!cache || !object) {
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return (AE_BAD_PARAMETER);
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}
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/* If cache is full, just free this object */
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if (cache->current_depth >= cache->max_depth) {
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ACPI_FREE(object);
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ACPI_MEM_TRACKING(cache->total_freed++);
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}
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/* Otherwise put this object back into the cache */
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else {
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status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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/* Mark the object as cached */
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memset(object, 0xCA, cache->object_size);
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ACPI_SET_DESCRIPTOR_TYPE(object, ACPI_DESC_TYPE_CACHED);
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/* Put the object at the head of the cache list */
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ACPI_SET_DESCRIPTOR_PTR(object, cache->list_head);
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cache->list_head = object;
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cache->current_depth++;
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(void)acpi_ut_release_mutex(ACPI_MTX_CACHES);
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}
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_os_acquire_object
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*
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* PARAMETERS: cache - Handle to cache object
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*
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* RETURN: the acquired object. NULL on error
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*
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* DESCRIPTION: Get an object from the specified cache. If cache is empty,
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* the object is allocated.
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*
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******************************************************************************/
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void *acpi_os_acquire_object(struct acpi_memory_list *cache)
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{
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acpi_status status;
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void *object;
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ACPI_FUNCTION_TRACE(os_acquire_object);
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if (!cache) {
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return_PTR(NULL);
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}
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status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
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if (ACPI_FAILURE(status)) {
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return_PTR(NULL);
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}
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ACPI_MEM_TRACKING(cache->requests++);
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/* Check the cache first */
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if (cache->list_head) {
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/* There is an object available, use it */
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object = cache->list_head;
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cache->list_head = ACPI_GET_DESCRIPTOR_PTR(object);
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cache->current_depth--;
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ACPI_MEM_TRACKING(cache->hits++);
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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"Object %p from %s cache\n", object,
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cache->list_name));
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status = acpi_ut_release_mutex(ACPI_MTX_CACHES);
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if (ACPI_FAILURE(status)) {
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return_PTR(NULL);
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}
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/* Clear (zero) the previously used Object */
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memset(object, 0, cache->object_size);
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} else {
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/* The cache is empty, create a new object */
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ACPI_MEM_TRACKING(cache->total_allocated++);
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#ifdef ACPI_DBG_TRACK_ALLOCATIONS
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if ((cache->total_allocated - cache->total_freed) >
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cache->max_occupied) {
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cache->max_occupied =
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cache->total_allocated - cache->total_freed;
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}
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#endif
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/* Avoid deadlock with ACPI_ALLOCATE_ZEROED */
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status = acpi_ut_release_mutex(ACPI_MTX_CACHES);
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if (ACPI_FAILURE(status)) {
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return_PTR(NULL);
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}
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object = ACPI_ALLOCATE_ZEROED(cache->object_size);
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if (!object) {
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return_PTR(NULL);
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}
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}
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return_PTR(object);
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}
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#endif /* ACPI_USE_LOCAL_CACHE */
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