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| author | Sushmita Susheelendra <ssusheel@codeaurora.org> | 2017-06-14 01:52:54 +0300 |
|---|---|---|
| committer | Rob Clark <robdclark@gmail.com> | 2017-06-17 15:03:07 +0300 |
| commit | 0e08270a1f01bceae17d32a0d75aad2388bd1ba2 (patch) | |
| tree | 31f17b04f1a459ca5ab26772626c8ece4c54158a /drivers/gpu/drm/msm/msm_gpu.c | |
| parent | 816fa34c051492c7f115ad2fd91c9e723d7fc298 (diff) | |
| download | linux-0e08270a1f01bceae17d32a0d75aad2388bd1ba2.tar.xz | |
drm/msm: Separate locking of buffer resources from struct_mutex
Buffer object specific resources like pages, domains, sg list
need not be protected with struct_mutex. They can be protected
with a buffer object level lock. This simplifies locking and
makes it easier to avoid potential recursive locking scenarios
for SVM involving mmap_sem and struct_mutex. This also removes
unnecessary serialization when creating buffer objects, and also
between buffer object creation and GPU command submission.
Signed-off-by: Sushmita Susheelendra <ssusheel@codeaurora.org>
[robclark: squash in handling new locking for shrinker]
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_gpu.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gpu.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index 2d5c9afbcdbe..9f3dbc236ab3 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -497,7 +497,7 @@ void msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit, /* submit takes a reference to the bo and iova until retired: */ drm_gem_object_reference(&msm_obj->base); - msm_gem_get_iova_locked(&msm_obj->base, + msm_gem_get_iova(&msm_obj->base, submit->gpu->aspace, &iova); if (submit->bos[i].flags & MSM_SUBMIT_BO_WRITE) @@ -661,9 +661,7 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev, } /* Create ringbuffer: */ - mutex_lock(&drm->struct_mutex); gpu->rb = msm_ringbuffer_new(gpu, config->ringsz); - mutex_unlock(&drm->struct_mutex); if (IS_ERR(gpu->rb)) { ret = PTR_ERR(gpu->rb); gpu->rb = NULL; |