lib_ring_buffer_ctx_init(&ctx, chan->chan, event, sizeof(data),
ltt_alignof(data), -1);
ret = chan->ops->event_reserve(&ctx, event->id);
lib_ring_buffer_ctx_init(&ctx, chan->chan, event, sizeof(data),
ltt_alignof(data), -1);
ret = chan->ops->event_reserve(&ctx, event->id);