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  /src/sys/external/bsd/drm2/dist/drm/amd/amdkfd/
kfd_kernel_queue.c 236 size_t queue_size_dwords; local in function:kq_acquire_packet_buffer
244 * the opposite. So we can only use up to queue_size_dwords - 1 dwords.
250 queue_size_dwords = kq->queue->properties.queue_size / 4;
256 available_size = (rptr + queue_size_dwords - 1 - wptr) %
257 queue_size_dwords;
267 if (wptr + packet_size_in_dwords >= queue_size_dwords) {
277 wptr = (wptr + 1) % queue_size_dwords;

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