drm/amdgpu: print DMA-buf status in debugfs

Just note if a BO was imported/exported.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index c62c3dd..7d3dc22 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -780,6 +780,8 @@ static int amdgpu_debugfs_gem_bo_info(int id, void *ptr, void *data)
        struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj);
        struct seq_file *m = data;
 
+       struct dma_buf_attachment *attachment;
+       struct dma_buf *dma_buf;
        unsigned domain;
        const char *placement;
        unsigned pin_count;
@@ -808,6 +810,15 @@ static int amdgpu_debugfs_gem_bo_info(int id, void *ptr, void *data)
        pin_count = READ_ONCE(bo->pin_count);
        if (pin_count)
                seq_printf(m, " pin count %d", pin_count);
+
+       dma_buf = READ_ONCE(bo->gem_base.dma_buf);
+       attachment = READ_ONCE(bo->gem_base.import_attach);
+
+       if (attachment)
+               seq_printf(m, " imported from %p", dma_buf);
+       else if (dma_buf)
+               seq_printf(m, " exported as %p", dma_buf);
+
        seq_printf(m, "\n");
 
        return 0;