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ttm: Make parts of a struct ttm_bo_device global.

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Common resources, like memory accounting and swap lists should be
global and not per device. Introduce a struct ttm_bo_global to
accomodate this, and register it with sysfs. Add a small sysfs interface
to return the number of active buffer objects.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Thomas Hellstrom
2009-08-18 16:51:56 +02:00
committed by Dave Airlie
parent 5fd9cbad3a
commit a987fcaa80
7 changed files with 296 additions and 141 deletions
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12
drivers/gpu/drm/ttm/ttm_tt.c
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@@ -166,7 +166,7 @@ static void ttm_tt_free_user_pages(struct ttm_tt *ttm)
set_page_dirty_lock(page);
ttm->pages[i] = NULL;
ttm_mem_global_free(ttm->bdev->mem_glob, PAGE_SIZE);
ttm_mem_global_free(ttm->glob->mem_glob, PAGE_SIZE);
put_page(page);
}
ttm->state = tt_unpopulated;
@@ -177,8 +177,7 @@ static void ttm_tt_free_user_pages(struct ttm_tt *ttm)
static struct page *__ttm_tt_get_page(struct ttm_tt *ttm, int index)
{
struct page *p;
struct ttm_bo_device *bdev = ttm->bdev;
struct ttm_mem_global *mem_glob = bdev->mem_glob;
struct ttm_mem_global *mem_glob = ttm->glob->mem_glob;
int ret;
while (NULL == (p = ttm->pages[index])) {
@@ -348,7 +347,7 @@ static void ttm_tt_free_alloced_pages(struct ttm_tt *ttm)
printk(KERN_ERR TTM_PFX
"Erroneous page count. "
"Leaking pages.\n");
ttm_mem_global_free_page(ttm->bdev->mem_glob,
ttm_mem_global_free_page(ttm->glob->mem_glob,
cur_page);
__free_page(cur_page);
}
@@ -394,7 +393,7 @@ int ttm_tt_set_user(struct ttm_tt *ttm,
struct mm_struct *mm = tsk->mm;
int ret;
int write = (ttm->page_flags & TTM_PAGE_FLAG_WRITE) != 0;
struct ttm_mem_global *mem_glob = ttm->bdev->mem_glob;
struct ttm_mem_global *mem_glob = ttm->glob->mem_glob;
BUG_ON(num_pages != ttm->num_pages);
BUG_ON((ttm->page_flags & TTM_PAGE_FLAG_USER) == 0);
@@ -439,8 +438,7 @@ struct ttm_tt *ttm_tt_create(struct ttm_bo_device *bdev, unsigned long size,
if (!ttm)
return NULL;
ttm->bdev = bdev;
ttm->glob = bdev->glob;
ttm->num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
ttm->first_himem_page = ttm->num_pages;
ttm->last_lomem_page = -1;