diff options
Diffstat (limited to 'drivers/gpu/drm/drm_cache.c')
| -rw-r--r-- | drivers/gpu/drm/drm_cache.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_cache.c b/drivers/gpu/drm/drm_cache.c index a7916e5f8864..c3b9aaccdf42 100644 --- a/drivers/gpu/drm/drm_cache.c +++ b/drivers/gpu/drm/drm_cache.c @@ -29,7 +29,9 @@ */ #include <linux/export.h> -#include <drm/drmP.h> +#include <linux/highmem.h> + +#include <drm/drm_cache.h> #if defined(CONFIG_X86) #include <asm/smp.h> @@ -67,6 +69,14 @@ static void drm_cache_flush_clflush(struct page *pages[], } #endif +/** + * drm_clflush_pages - Flush dcache lines of a set of pages. + * @pages: List of pages to be flushed. + * @num_pages: Number of pages in the array. + * + * Flush every data cache line entry that points to an address belonging + * to a page in the array. + */ void drm_clflush_pages(struct page *pages[], unsigned long num_pages) { @@ -101,6 +111,13 @@ drm_clflush_pages(struct page *pages[], unsigned long num_pages) } EXPORT_SYMBOL(drm_clflush_pages); +/** + * drm_clflush_sg - Flush dcache lines pointing to a scather-gather. + * @st: struct sg_table. + * + * Flush every data cache line entry that points to an address in the + * sg. + */ void drm_clflush_sg(struct sg_table *st) { @@ -125,6 +142,14 @@ drm_clflush_sg(struct sg_table *st) } EXPORT_SYMBOL(drm_clflush_sg); +/** + * drm_clflush_virt_range - Flush dcache lines of a region + * @addr: Initial kernel memory address. + * @length: Region size. + * + * Flush every data cache line entry that points to an address in the + * region requested. + */ void drm_clflush_virt_range(void *addr, unsigned long length) { |