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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-04-26 19:29:41 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-04-27 10:16:17 +0200 |
| commit | 1d2ac403ae3bfde7c50328ee0d39d3fb3d8d9823 (patch) | |
| tree | ebdb7a84d3399feeb2e06b855f5ee04550101ea4 /drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | |
| parent | f47dbdd75bf3388ce8107c2e7e5a1eebd3700dd5 (diff) | |
| download | linux-stable-1d2ac403ae3bfde7c50328ee0d39d3fb3d8d9823.tar.gz linux-stable-1d2ac403ae3bfde7c50328ee0d39d3fb3d8d9823.tar.bz2 linux-stable-1d2ac403ae3bfde7c50328ee0d39d3fb3d8d9823.zip | |
drm: Protect dev->filelist with its own mutex
amdgpu gained dev->struct_mutex usage, and that's because it's walking
the dev->filelist list. Protect that list with it's own lock to take
one more step towards getting rid of struct_mutex usage in drivers
once and for all.
While doing the conversion I noticed that 2 debugfs files in i915
completely lacked appropriate locking. Fix that up too.
v2: don't forget to switch to drm_gem_object_unreference_unlocked.
Cc: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461691808-12414-9-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index fa6a27bff298..a087b9638cde 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -93,7 +93,7 @@ void amdgpu_gem_force_release(struct amdgpu_device *adev) struct drm_device *ddev = adev->ddev; struct drm_file *file; - mutex_lock(&ddev->struct_mutex); + mutex_lock(&ddev->filelist_mutex); list_for_each_entry(file, &ddev->filelist, lhead) { struct drm_gem_object *gobj; @@ -103,13 +103,13 @@ void amdgpu_gem_force_release(struct amdgpu_device *adev) spin_lock(&file->table_lock); idr_for_each_entry(&file->object_idr, gobj, handle) { WARN_ONCE(1, "And also active allocations!\n"); - drm_gem_object_unreference(gobj); + drm_gem_object_unreference_unlocked(gobj); } idr_destroy(&file->object_idr); spin_unlock(&file->table_lock); } - mutex_unlock(&ddev->struct_mutex); + mutex_unlock(&ddev->filelist_mutex); } /* @@ -769,7 +769,7 @@ static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data) struct drm_file *file; int r; - r = mutex_lock_interruptible(&dev->struct_mutex); + r = mutex_lock_interruptible(&dev->filelist_mutex); if (r) return r; @@ -793,7 +793,7 @@ static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data) spin_unlock(&file->table_lock); } - mutex_unlock(&dev->struct_mutex); + mutex_unlock(&dev->filelist_mutex); return 0; } |