openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

Revert "ttm: Utilize the DMA API for pages that have TTM_PAGE_FLAG_DMA32 set." 

This reverts commit 69a07f0b11.

We've tracked a number of problems back to this, and Thomas
thinks we should redesign this for .40/41 anyways so I'm
happy to revert it.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2011-04-13 09:15:09 +10:00
parent cbf15bdbbd
commit d87dfdbfc9
1 changed files with 3 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/gpu/drm/ttm/ttm_page_alloc.c
View File

@ -683,22 +683,14 @@ int ttm_get_pages(struct list_head *pages, int flags,
gfp_flags |= GFP_HIGHUSER;
for (r = 0; r < count; ++r) {
if ((flags & TTM_PAGE_FLAG_DMA32) && dma_address) {
void *addr;
addr = dma_alloc_coherent(NULL, PAGE_SIZE,
&dma_address[r],
gfp_flags);
if (addr == NULL)
return -ENOMEM;
p = virt_to_page(addr);
} else
p = alloc_page(gfp_flags);
p = alloc_page(gfp_flags);
if (!p) {
printk(KERN_ERR TTM_PFX
"Unable to allocate page.");
return -ENOMEM;
}
list_add(&p->lru, pages);
}
return 0;
@ -746,24 +738,12 @@ void ttm_put_pages(struct list_head *pages, unsigned page_count, int flags,
unsigned long irq_flags;
struct ttm_page_pool *pool = ttm_get_pool(flags, cstate);
struct page *p, *tmp;
unsigned r;
if (pool == NULL) {
/* No pool for this memory type so free the pages */
r = page_count-1;
list_for_each_entry_safe(p, tmp, pages, lru) {
if ((flags & TTM_PAGE_FLAG_DMA32) && dma_address) {
void *addr = page_address(p);
WARN_ON(!addr || !dma_address[r]);
if (addr)
dma_free_coherent(NULL, PAGE_SIZE,
addr,
dma_address[r]);
dma_address[r] = 0;
} else
__free_page(p);
r--;
__free_page(p);
}
/* Make the pages list empty */
INIT_LIST_HEAD(pages);