diff options
Diffstat (limited to 'drivers/acpi/osl.c')
| -rw-r--r-- | drivers/acpi/osl.c | 196 |
1 files changed, 148 insertions, 48 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index bdd9f37f810..56e7cedba91 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -778,54 +778,6 @@ acpi_os_delete_lock ( return_VOID; } -/* - * Acquire a spinlock. - * - * handle is a pointer to the spinlock_t. - * flags is *not* the result of save_flags - it is an ACPI-specific flag variable - * that indicates whether we are at interrupt level. - */ -void -acpi_os_acquire_lock ( - acpi_handle handle, - u32 flags) -{ - ACPI_FUNCTION_TRACE ("os_acquire_lock"); - - ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Acquiring spinlock[%p] from %s level\n", handle, - ((flags & ACPI_NOT_ISR) ? "non-interrupt" : "interrupt"))); - - if (flags & ACPI_NOT_ISR) - ACPI_DISABLE_IRQS(); - - spin_lock((spinlock_t *)handle); - - return_VOID; -} - - -/* - * Release a spinlock. See above. - */ -void -acpi_os_release_lock ( - acpi_handle handle, - u32 flags) -{ - ACPI_FUNCTION_TRACE ("os_release_lock"); - - ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Releasing spinlock[%p] from %s level\n", handle, - ((flags & ACPI_NOT_ISR) ? "non-interrupt" : "interrupt"))); - - spin_unlock((spinlock_t *)handle); - - if (flags & ACPI_NOT_ISR) - ACPI_ENABLE_IRQS(); - - return_VOID; -} - - acpi_status acpi_os_create_semaphore( u32 max_units, @@ -1172,3 +1124,151 @@ unsigned int max_cstate = ACPI_PROCESSOR_MAX_POWER; EXPORT_SYMBOL(max_cstate); + +/* + * Acquire a spinlock. + * + * handle is a pointer to the spinlock_t. + * flags is *not* the result of save_flags - it is an ACPI-specific flag variable + * that indicates whether we are at interrupt level. + */ + +unsigned long +acpi_os_acquire_lock ( + acpi_handle handle) +{ + unsigned long flags; + spin_lock_irqsave((spinlock_t *)handle, flags); + return flags; +} + +/* + * Release a spinlock. See above. + */ + +void +acpi_os_release_lock ( + acpi_handle handle, + unsigned long 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 = kmem_cache_alloc(cache, GFP_KERNEL); + WARN_ON(!object); + return object; +} + +#endif + |