Extern or forward variable declaration at drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h, line 30 References: drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c, line 227 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c, line 779 drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c, line 48 drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c, line 217 drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c, line 107 drivers/gpu/drm/amd/amdgpu/amdgpu_ids.h, line 75 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c, line 1271 drivers/gpu/drm/amd/amdgpu/amdgpu_object.h, line 44 drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c, line 158 drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c, line 192 drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c, line 329 drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c, line 194 drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h, line 30 drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h, line 47 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c, line 302 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c, line 1961 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c, line 2035 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h, line 86 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h, line 93 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h, line 97 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c, line 2198 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c, line 2297