This series wires USERQ_EOP, QUEUE_RESET, and GPU_RESET events into the render-node EVENTFD notification infrastructure.
It builds on the render-node EVENTFD infrastructure introduced in: https://patchwork.freedesktop.org/series/164618/#rev7 That series provides the EVENTFD manager, subscription lifetime management, event type definitions, and queue-aware subscription support. This series adds only the EVENTFD notification producers for GPU events. Base branch: origin/amd-unified-interface Base commit: 540d68973c0b ("drm/amdgpu/userq: fix NULL deref in amdgpu_userq_evict_all") EVENTFD provides lightweight notification-only wakeups. Event payload and metadata are retrieved separately through the corresponding event interface. The three patches in this series add: - USERQ_EOP notifications from the user queue fence interrupt path. - QUEUE_RESET notifications after successfully resetting a hung queue. - GPU_RESET notifications after successful hardware reset completion. Changes since v2: * Rebased onto the latest EVENTFD infrastructure. * Reworked QUEUE_RESET handling to use the queue object already resolved by the MES queue reset path. * Introduced amdgpu_userq_handle_hung_queue() to consolidate queue state updates, EVENTFD signaling, fence completion, and the DRM wedged event into a single helper. * Keep the queue alive across reset and unmap processing by taking a queue reference while it is being handled. * Preserve the existing guilty queue handling and queue type validation in the MES reset path. The USERQ_EOP and GPU_RESET notification paths are unchanged from v2 apart from rebasing. Only compilation tested. Srinivasan Shanmugam (3): drm/amdgpu: Signal USERQ_EOP EVENTFD notifications drm/amdgpu: Signal QUEUE_RESET EVENTFD notifications drm/amdgpu: Signal GPU_RESET EVENTFD notifications Srinivasan Shanmugam (3): drm/amdgpu: Signal USERQ_EOP EVENTFD notifications drm/amdgpu: Signal QUEUE_RESET EVENTFD notifications drm/amdgpu: Signal GPU_RESET EVENTFD notifications drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 51 ++++++++++++++- drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c | 39 ++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_userq.h | 3 +- drivers/gpu/drm/amd/amdgpu/mes_userqueue.c | 73 ++++++++++++++-------- 4 files changed, 138 insertions(+), 28 deletions(-) -- 2.34.1
