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drm/radeon/kms: record object that have been list reserved

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list reservation was too optimistic about ttm object reservation
and could think that an object reserved by some other process
as reserved by the list reservation which was false. Thus when
unreserving the list it might unreserve object that it didn't
reserved in the list. Sorry if it's hard to follow but this
kind of things are just causing headheck.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jerome Glisse
2010-05-19 16:05:50 +02:00
committed by Dave Airlie
parent 365048ff7f
commit e865275335
2 changed files with 6 additions and 1 deletions
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6
drivers/gpu/drm/radeon/radeon_object.c
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@@ -301,6 +301,7 @@ int radeon_bo_list_reserve(struct list_head *head)
r = radeon_bo_reserve(lobj->bo, false);
if (unlikely(r != 0))
return r;
lobj->reserved = true;
}
return 0;
}
@@ -311,7 +312,7 @@ void radeon_bo_list_unreserve(struct list_head *head)
list_for_each_entry(lobj, head, list) {
/* only unreserve object we successfully reserved */
if (radeon_bo_is_reserved(lobj->bo))
if (lobj->reserved && radeon_bo_is_reserved(lobj->bo))
radeon_bo_unreserve(lobj->bo);
}
}
@@ -322,6 +323,9 @@ int radeon_bo_list_validate(struct list_head *head)
struct radeon_bo *bo;
int r;
list_for_each_entry(lobj, head, list) {
lobj->reserved = false;
}
r = radeon_bo_list_reserve(head);
if (unlikely(r != 0)) {
return r;