diff options
Diffstat (limited to 'drivers/staging/android/ion/ion_priv.h')
| -rw-r--r-- | drivers/staging/android/ion/ion_priv.h | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/drivers/staging/android/ion/ion_priv.h b/drivers/staging/android/ion/ion_priv.h index c8f01757abfa..0e3b8a6f3bf7 100644 --- a/drivers/staging/android/ion/ion_priv.h +++ b/drivers/staging/android/ion/ion_priv.h @@ -26,6 +26,9 @@ #include <linux/sched.h> #include <linux/shrinker.h> #include <linux/types.h> +#ifdef CONFIG_ION_POOL_CACHE_POLICY +#include <asm/cacheflush.h> +#endif #include "ion.h" @@ -345,7 +348,7 @@ void ion_carveout_free(struct ion_heap *heap, ion_phys_addr_t addr, * functions for creating and destroying a heap pool -- allows you * to keep a pool of pre allocated memory to use from your heap. Keeping * a pool of memory that is ready for dma, ie any cached mapping have been - * invalidated from the cache, provides a significant peformance benefit on + * invalidated from the cache, provides a significant performance benefit on * many systems */ /** @@ -362,7 +365,7 @@ void ion_carveout_free(struct ion_heap *heap, ion_phys_addr_t addr, * * Allows you to keep a pool of pre allocated pages to use from your heap. * Keeping a pool of pages that is ready for dma, ie any cached mapping have - * been invalidated from the cache, provides a significant peformance benefit + * been invalidated from the cache, provides a significant performance benefit * on many systems */ struct ion_page_pool { @@ -380,6 +383,37 @@ struct ion_page_pool *ion_page_pool_create(gfp_t gfp_mask, unsigned int order); void ion_page_pool_destroy(struct ion_page_pool *); struct page *ion_page_pool_alloc(struct ion_page_pool *); void ion_page_pool_free(struct ion_page_pool *, struct page *); +void ion_page_pool_free_immediate(struct ion_page_pool *, struct page *); + +#ifdef CONFIG_ION_POOL_CACHE_POLICY +static inline void ion_page_pool_alloc_set_cache_policy + (struct ion_page_pool *pool, + struct page *page){ + void *va = page_address(page); + + if (va) + set_memory_wc((unsigned long)va, 1 << pool->order); +} + +static inline void ion_page_pool_free_set_cache_policy + (struct ion_page_pool *pool, + struct page *page){ + void *va = page_address(page); + + if (va) + set_memory_wb((unsigned long)va, 1 << pool->order); + +} +#else +static inline void ion_page_pool_alloc_set_cache_policy + (struct ion_page_pool *pool, + struct page *page){ } + +static inline void ion_page_pool_free_set_cache_policy + (struct ion_page_pool *pool, + struct page *page){ } +#endif + /** ion_page_pool_shrink - shrinks the size of the memory cached in the pool * @pool: the pool |