Am 15.12.2017 um 07:24 schrieb Thomas Hellstrom:
Hi.
On 12/14/2017 09:10 AM, Roger He wrote:
Change-Id: I0c6ece0decd18d30ccc94e5c7ca106d351941c62
Signed-off-by: Roger He <Hongbo.He@xxxxxxx>
---
drivers/gpu/drm/ttm/ttm_bo.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 098b22e..ba5b486 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -707,7 +707,6 @@ bool ttm_bo_eviction_valuable(struct
ttm_buffer_object *bo,
EXPORT_SYMBOL(ttm_bo_eviction_valuable);
static int ttm_mem_evict_first(struct ttm_bo_device *bdev,
- struct reservation_object *resv,
uint32_t mem_type,
const struct ttm_place *place,
struct ttm_operation_ctx *ctx)
@@ -722,8 +721,9 @@ static int ttm_mem_evict_first(struct
ttm_bo_device *bdev,
spin_lock(&glob->lru_lock);
for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) {
list_for_each_entry(bo, &man->lru[i], lru) {
- if (bo->resv == resv) {
- if (list_empty(&bo->ddestroy))
+ if (bo->resv == ctx->resv) {
+ if (!ctx->allow_reserved_eviction &&
+ list_empty(&bo->ddestroy))
continue;
It looks to me like a value of locked==true could leak through from a
previous loop iteration here, so that locked ends up to be true if
(bo->resv == resv && ctx->allow_reserved_eviction), even if no
locking was taking place. Perhaps-re-initialize locked to false on
each loop iteration?
Yeah, that is correct. Roger had a patch for this as prerequisite for
this one.
No idea why this change isn't obvious in this one.
Christian.
/Thomas
} else {
locked = reservation_object_trylock(bo->resv);
@@ -835,7 +835,7 @@ static int ttm_bo_mem_force_space(struct
ttm_buffer_object *bo,
return ret;
if (mem->mm_node)
break;
- ret = ttm_mem_evict_first(bdev, bo->resv, mem_type, place,
ctx);
+ ret = ttm_mem_evict_first(bdev, mem_type, place, ctx);
if (unlikely(ret != 0))
return ret;
} while (1);
@@ -1332,8 +1332,7 @@ static int ttm_bo_force_list_clean(struct
ttm_bo_device *bdev,
for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) {
while (!list_empty(&man->lru[i])) {
spin_unlock(&glob->lru_lock);
- ret = ttm_mem_evict_first(bdev, NULL, mem_type,
- NULL, &ctx);
+ ret = ttm_mem_evict_first(bdev, mem_type, NULL, &ctx);
if (ret)
return ret;
spin_lock(&glob->lru_lock);
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