Re: [PATCH V1 1/5] accel/amdxdna: Use compatible fdinfo engine key

From: Lizhi Hou

Date: Fri Oct 23 2026 - 12:11:10 EST


Applied to drm-misc-next.

On 10/23/26 03:37, Umio-Yasuno - coelacanth_dream wrote:
On Friday, October 23rd, 2026 at 0:58, Max Zhen <max.zhen@xxxxxxx> wrote:

The released out-of-tree amdxdna driver uses amdxdna_accel_driver as the
drm-engine key string, which is consumed by several applications.

Use the same key string in the upstream driver to maintain compatibility
with the out-of-tree driver.

Reported-by: Umio Yasuno <coelacanth_dream@xxxxxxxxxxxxxx>
Closes: https://github.com/amd/xdna-driver/issues/1754
Fixes: 489a8539ca6f ("accel/amdxdna: Expose NPU device busy time via DRM fdinfo")
Signed-off-by: Max Zhen <max.zhen@xxxxxxx>
Reviewed-by: Umio Yasuno <coelacanth_dream@xxxxxxxxxxxxxx>

Thanks!

---
Documentation/accel/amdxdna/amdnpu.rst | 2 +-
drivers/accel/amdxdna/amdxdna_pci_drv.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/accel/amdxdna/amdnpu.rst b/Documentation/accel/amdxdna/amdnpu.rst
index d72af1b51ccf..b0cc481c73ae 100644
--- a/Documentation/accel/amdxdna/amdnpu.rst
+++ b/Documentation/accel/amdxdna/amdnpu.rst
@@ -289,7 +289,7 @@ Example of the output showing the implemented key value pairs:
drm-driver: amdxdna_accel_driver
drm-client-id: 3219
drm-pdev: 0000:c5:00.1
- drm-engine-npu: 14003870 ns
+ drm-engine-amdxdna_accel_driver: 14003870 ns
amdxdna_accel_driver-heap-alloc: 60 KiB
amdxdna_accel_driver-internal-alloc: 67588 KiB
amdxdna_accel_driver-external-alloc: 0
diff --git a/drivers/accel/amdxdna/amdxdna_pci_drv.c b/drivers/accel/amdxdna/amdxdna_pci_drv.c
index edf807c93144..f233eb70a295 100644
--- a/drivers/accel/amdxdna/amdxdna_pci_drv.c
+++ b/drivers/accel/amdxdna/amdxdna_pci_drv.c
@@ -284,9 +284,9 @@ static void amdxdna_show_fdinfo(struct drm_printer *p, struct drm_file *filp)
{
struct amdxdna_client *client = filp->driver_priv;
size_t heap_usage, external_usage, internal_usage;
- char *drv_name = filp->minor->dev->driver->name;
+ char *drv_name = "amdxdna_accel_driver";

- drm_printf(p, "drm-engine-npu:\t%llu ns\n",
+ drm_printf(p, "drm-engine-%s:\t%llu ns\n", drv_name,
amdxdna_io_stats_busy_time_ns(client));

mutex_lock(&client->mm_lock);
--
2.34.1