diff options
| 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_fbdev.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_fbdev.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_fbdev.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c index 803ed272dc6d..5ecf4ff9a059 100644 --- a/drivers/gpu/drm/msm/msm_fbdev.c +++ b/drivers/gpu/drm/msm/msm_fbdev.c @@ -97,10 +97,8 @@ static int msm_fbdev_create(struct drm_fb_helper *helper, /* allocate backing bo */ size = mode_cmd.pitches[0] * mode_cmd.height; DBG("allocating %d bytes for fb %d", size, dev->primary->index); - mutex_lock(&dev->struct_mutex); fbdev->bo = msm_gem_new(dev, size, MSM_BO_SCANOUT | MSM_BO_WC | MSM_BO_STOLEN); - mutex_unlock(&dev->struct_mutex); if (IS_ERR(fbdev->bo)) { ret = PTR_ERR(fbdev->bo); fbdev->bo = NULL; @@ -126,7 +124,7 @@ static int msm_fbdev_create(struct drm_fb_helper *helper, * in panic (ie. lock-safe, etc) we could avoid pinning the * buffer now: */ - ret = msm_gem_get_iova_locked(fbdev->bo, priv->kms->aspace, &paddr); + ret = msm_gem_get_iova(fbdev->bo, priv->kms->aspace, &paddr); if (ret) { dev_err(dev->dev, "failed to get buffer obj iova: %d\n", ret); goto fail_unlock; @@ -155,7 +153,7 @@ static int msm_fbdev_create(struct drm_fb_helper *helper, dev->mode_config.fb_base = paddr; - fbi->screen_base = msm_gem_get_vaddr_locked(fbdev->bo); + fbi->screen_base = msm_gem_get_vaddr(fbdev->bo); if (IS_ERR(fbi->screen_base)) { ret = PTR_ERR(fbi->screen_base); goto fail_unlock; |