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drm/ttm: Memory accounting rework.

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Use inclusive zones to simplify accounting and its sysfs representation.
Use DMA32 accounting where applicable.

Add a sysfs interface to make the heuristically determined limits
readable and configurable.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Thomas Hellstrom
2009-08-17 16:28:39 +02:00
committed by Dave Airlie
parent e9840be8c2
commit 5fd9cbad3a
6 changed files with 453 additions and 119 deletions
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4
drivers/gpu/drm/ttm/ttm_global.c
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@@ -71,7 +71,7 @@ int ttm_global_item_ref(struct ttm_global_reference *ref)
mutex_lock(&item->mutex);
if (item->refcount == 0) {
item->object = kmalloc(ref->size, GFP_KERNEL);
item->object = kzalloc(ref->size, GFP_KERNEL);
if (unlikely(item->object == NULL)) {
ret = -ENOMEM;
goto out_err;
@@ -89,7 +89,6 @@ int ttm_global_item_ref(struct ttm_global_reference *ref)
mutex_unlock(&item->mutex);
return 0;
out_err:
kfree(item->object);
mutex_unlock(&item->mutex);
item->object = NULL;
return ret;
@@ -105,7 +104,6 @@ void ttm_global_item_unref(struct ttm_global_reference *ref)
BUG_ON(ref->object != item->object);
if (--item->refcount == 0) {
ref->release(ref);
kfree(item->object);
item->object = NULL;
}
mutex_unlock(&item->mutex);