Re: [PATCH 2/4] drm/ttm: cleanup ttm_buffer_object_transfer

2019-11-15 Thread Felix Kuehling
The subject doesn't match the change. This changes ttm_bo_cleanup_refs, 
not ttm_buffer_object_transfer.


On 2019-11-11 9:58 a.m., Christian König wrote:

The function is always called with deleted BOs.

While at it cleanup the indentation as well.

Signed-off-by: Christian König 
---
  drivers/gpu/drm/ttm/ttm_bo.c | 12 +++-
  1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 7e7925fecd9e..1178980f4147 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -527,14 +527,9 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object 
*bo,
   bool interruptible, bool no_wait_gpu,
   bool unlock_resv)
  {
-   struct dma_resv *resv;
+   struct dma_resv *resv = >base._resv;
int ret;
  
-	if (unlikely(list_empty(>ddestroy)))


Would it make sense to add a BUG_ON or WARN_ON here to check the 
assumption made by this code?


Regards,
  Felix


-   resv = bo->base.resv;
-   else
-   resv = >base._resv;
-
if (dma_resv_test_signaled_rcu(resv, true))
ret = 0;
else
@@ -547,9 +542,8 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo,
dma_resv_unlock(bo->base.resv);
spin_unlock(_bo_glob.lru_lock);
  
-		lret = dma_resv_wait_timeout_rcu(resv, true,

-  interruptible,
-  30 * HZ);
+   lret = dma_resv_wait_timeout_rcu(resv, true, interruptible,
+30 * HZ);
  
  		if (lret < 0)

return lret;

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[PATCH 2/4] drm/ttm: cleanup ttm_buffer_object_transfer

2019-11-11 Thread Christian König
The function is always called with deleted BOs.

While at it cleanup the indentation as well.

Signed-off-by: Christian König 
---
 drivers/gpu/drm/ttm/ttm_bo.c | 12 +++-
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 7e7925fecd9e..1178980f4147 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -527,14 +527,9 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object 
*bo,
   bool interruptible, bool no_wait_gpu,
   bool unlock_resv)
 {
-   struct dma_resv *resv;
+   struct dma_resv *resv = >base._resv;
int ret;
 
-   if (unlikely(list_empty(>ddestroy)))
-   resv = bo->base.resv;
-   else
-   resv = >base._resv;
-
if (dma_resv_test_signaled_rcu(resv, true))
ret = 0;
else
@@ -547,9 +542,8 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo,
dma_resv_unlock(bo->base.resv);
spin_unlock(_bo_glob.lru_lock);
 
-   lret = dma_resv_wait_timeout_rcu(resv, true,
-  interruptible,
-  30 * HZ);
+   lret = dma_resv_wait_timeout_rcu(resv, true, interruptible,
+30 * HZ);
 
if (lret < 0)
return lret;
-- 
2.17.1

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