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| author | Nicolai Hähnle <nicolai.haehnle@amd.com> | 2017-01-10 19:06:00 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-01-27 11:13:28 -0500 |
| commit | 36ea83d1512008ab6631c54971e8de8cf2f0a7b4 (patch) | |
| tree | 2a69aafab3903216dbb6036de0bde7a525f23e65 /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | |
| parent | 54170226a6c9a2122620a3c5c432a76e84026794 (diff) | |
| download | linux-36ea83d1512008ab6631c54971e8de8cf2f0a7b4.tar.bz2 | |
drm/amd/amdgpu: lock reservation object while creating shadow bo
ttm_bo_init checks that the reservation object is locked. This is
the caller's responsibility when resv != NULL. Otherwise, the inline
reservation object of the newly allocated buffer is used and must
explicitly be locked.
Uninterruptible w/w locks without an acquire context are always
successful.
v2: use ww_mutex_lock
Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net> (v1)
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index d94cdeff0617..ac6b074b8821 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -472,7 +472,16 @@ int amdgpu_bo_create(struct amdgpu_device *adev, return r; if (amdgpu_need_backup(adev) && (flags & AMDGPU_GEM_CREATE_SHADOW)) { + if (!resv) { + r = ww_mutex_lock(&(*bo_ptr)->tbo.resv->lock, NULL); + WARN_ON(r != 0); + } + r = amdgpu_bo_create_shadow(adev, size, byte_align, (*bo_ptr)); + + if (!resv) + ww_mutex_unlock(&(*bo_ptr)->tbo.resv->lock); + if (r) amdgpu_bo_unref(bo_ptr); } |