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Userspace jobs have drm_file.client_id as a unique identifier as job's owners. For kernel jobs, we can allocate arbitrary values - the risk of overlap with userspace ids is small (given that it's a u64 value). In the unlikely case the overlap happens, it'll only impact trace events. Since this ID is traced in the gpu_scheduler trace events, this allows to determine the source of each job sent to the hardware. To make grepping easier, the IDs are defined as they will appear in the trace output. Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com> Link: https://lore.kernel.org/r/20250604122827.2191-1-pierre-eric.pelloux-prayer@amd.com