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[09/14] drm/msm: Drop struct_mutex from the retire path

Message ID 20201004192152.3298573-10-robdclark@gmail.com (mailing list archive)
State New, archived
Headers show
Series drm/msm: de-struct_mutex-ification | expand

Commit Message

Rob Clark Oct. 4, 2020, 7:21 p.m. UTC
From: Rob Clark <robdclark@chromium.org>

Now that we are not relying on dev->struct_mutex to protect the
ring->submits lists, drop the struct_mutex lock.

Signed-off-by: Rob Clark <robdclark@chromium.org>
---
 drivers/gpu/drm/msm/msm_gpu.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

Comments

Jordan Crouse Oct. 5, 2020, 2:29 p.m. UTC | #1
On Sun, Oct 04, 2020 at 12:21:41PM -0700, Rob Clark wrote:
> From: Rob Clark <robdclark@chromium.org>
> 
> Now that we are not relying on dev->struct_mutex to protect the
> ring->submits lists, drop the struct_mutex lock.

Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
 
> Signed-off-by: Rob Clark <robdclark@chromium.org>
> ---
>  drivers/gpu/drm/msm/msm_gpu.c | 8 +-------
>  1 file changed, 1 insertion(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
> index c9ff19a75169..5e351d1c00e9 100644
> --- a/drivers/gpu/drm/msm/msm_gpu.c
> +++ b/drivers/gpu/drm/msm/msm_gpu.c
> @@ -707,7 +707,7 @@ static void retire_submit(struct msm_gpu *gpu, struct msm_ringbuffer *ring,
>  
>  		msm_gem_active_put(&msm_obj->base);
>  		msm_gem_unpin_iova(&msm_obj->base, submit->aspace);
> -		drm_gem_object_put_locked(&msm_obj->base);
> +		drm_gem_object_put(&msm_obj->base);
>  	}
>  
>  	pm_runtime_mark_last_busy(&gpu->pdev->dev);
> @@ -722,11 +722,8 @@ static void retire_submit(struct msm_gpu *gpu, struct msm_ringbuffer *ring,
>  
>  static void retire_submits(struct msm_gpu *gpu)
>  {
> -	struct drm_device *dev = gpu->dev;
>  	int i;
>  
> -	WARN_ON(!mutex_is_locked(&dev->struct_mutex));
> -
>  	/* Retire the commits starting with highest priority */
>  	for (i = 0; i < gpu->nr_rings; i++) {
>  		struct msm_ringbuffer *ring = gpu->rb[i];
> @@ -756,15 +753,12 @@ static void retire_submits(struct msm_gpu *gpu)
>  static void retire_worker(struct work_struct *work)
>  {
>  	struct msm_gpu *gpu = container_of(work, struct msm_gpu, retire_work);
> -	struct drm_device *dev = gpu->dev;
>  	int i;
>  
>  	for (i = 0; i < gpu->nr_rings; i++)
>  		update_fences(gpu, gpu->rb[i], gpu->rb[i]->memptrs->fence);
>  
> -	mutex_lock(&dev->struct_mutex);
>  	retire_submits(gpu);
> -	mutex_unlock(&dev->struct_mutex);
>  }
>  
>  /* call from irq handler to schedule work to retire bo's */
> -- 
> 2.26.2
> 
> _______________________________________________
> Freedreno mailing list
> Freedreno@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/freedreno
diff mbox series

Patch

diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index c9ff19a75169..5e351d1c00e9 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -707,7 +707,7 @@  static void retire_submit(struct msm_gpu *gpu, struct msm_ringbuffer *ring,
 
 		msm_gem_active_put(&msm_obj->base);
 		msm_gem_unpin_iova(&msm_obj->base, submit->aspace);
-		drm_gem_object_put_locked(&msm_obj->base);
+		drm_gem_object_put(&msm_obj->base);
 	}
 
 	pm_runtime_mark_last_busy(&gpu->pdev->dev);
@@ -722,11 +722,8 @@  static void retire_submit(struct msm_gpu *gpu, struct msm_ringbuffer *ring,
 
 static void retire_submits(struct msm_gpu *gpu)
 {
-	struct drm_device *dev = gpu->dev;
 	int i;
 
-	WARN_ON(!mutex_is_locked(&dev->struct_mutex));
-
 	/* Retire the commits starting with highest priority */
 	for (i = 0; i < gpu->nr_rings; i++) {
 		struct msm_ringbuffer *ring = gpu->rb[i];
@@ -756,15 +753,12 @@  static void retire_submits(struct msm_gpu *gpu)
 static void retire_worker(struct work_struct *work)
 {
 	struct msm_gpu *gpu = container_of(work, struct msm_gpu, retire_work);
-	struct drm_device *dev = gpu->dev;
 	int i;
 
 	for (i = 0; i < gpu->nr_rings; i++)
 		update_fences(gpu, gpu->rb[i], gpu->rb[i]->memptrs->fence);
 
-	mutex_lock(&dev->struct_mutex);
 	retire_submits(gpu);
-	mutex_unlock(&dev->struct_mutex);
 }
 
 /* call from irq handler to schedule work to retire bo's */