On Sun, Oct 04, 2020 at 12:21:41PM -0700, Rob Clark wrote:
> From: Rob Clark <robdclark@xxxxxxxxxxxx>
>
> 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@xxxxxxxxxxxxxx>
> Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
> ---
> 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
>
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--
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