+
+/*
+ * Acquire a spinlock.
+ *
+ * handle is a pointer to the spinlock_t.
+ */
+
+acpi_cpu_flags acpi_os_acquire_lock(acpi_handle handle)
+{
+ acpi_cpu_flags flags;
+ spin_lock_irqsave((spinlock_t *) handle, flags);
+ return flags;
+}
+
+/*
+ * Release a spinlock. See above.
+ */
+
+void acpi_os_release_lock(acpi_handle handle, acpi_cpu_flags flags)
+{
+ spin_unlock_irqrestore((spinlock_t *) handle, flags);
+}
+
+#ifndef ACPI_USE_LOCAL_CACHE
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_os_create_cache
+ *
+ * PARAMETERS: CacheName - Ascii name for the cache
+ * ObjectSize - Size of each cached object
+ * MaxDepth - Maximum depth of the cache (in objects)
+ * ReturnCache - Where the new cache object is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Create a cache object
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache)
+{
+ *cache = kmem_cache_create(name, size, 0, 0, NULL, NULL);
+ 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(acpi_cache_t * cache)
+{
+ (void)kmem_cache_shrink(cache);
+ 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(acpi_cache_t * cache)
+{
+ (void)kmem_cache_destroy(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(acpi_cache_t * cache, void *object)
+{
+ kmem_cache_free(cache, object);
+ return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_os_acquire_object
+ *
+ * PARAMETERS: Cache - Handle to cache object
+ * ReturnObject - Where the object is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get an object from the specified cache. If cache is empty,
+ * the object is allocated.
+ *
+ ******************************************************************************/
+
+void *acpi_os_acquire_object(acpi_cache_t * cache)
+{
+ void *object;
+
+ if (acpi_in_resume)
+ object = kmem_cache_alloc(cache, GFP_ATOMIC);
+ else
+ object = kmem_cache_alloc(cache, GFP_KERNEL);
+ WARN_ON(!object);
+ return object;
+}
+
+#endif