drm/ttm: Use set_pages_array_wc instead of set_memory_wc.

Using single call to set multiple pages to wc reduces number of expensive cache
flushes.

Signed-off-by: Pauli Nieminen <suokkos@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 1 insertions, 11 deletions

diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c
index f82bf805903c..57799dba35e0 100644
--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
@@ -113,17 +113,7 @@ static struct ttm_pool_manager _manager = {
         .page_alloc_inited      = ATOMIC_INIT(0)
 };
 
-#ifdef CONFIG_X86
-/* TODO: add this to x86 like _uc, this version here is inefficient */
-static int set_pages_array_wc(struct page **pages, int addrinarray)
-{
-        int i;
-
-        for (i = 0; i < addrinarray; i++)
-                set_memory_wc((unsigned long)page_address(pages[i]), 1);
-        return 0;
-}
-#else
+#ifndef CONFIG_X86
 static int set_pages_array_wb(struct page **pages, int addrinarray)
 {
 #ifdef TTM_HAS_AGP