On Tue, Jan 07, 2025 at 08:51:57AM +0100, Hannes Reinecke wrote:

quoted

  void blk_mq_map_queues(struct blk_mq_queue_map *qmap)
  {
  	const struct cpumask *masks;
-	unsigned int queue, cpu;
+	unsigned int queue, cpu, nr_masks;
-	masks = group_cpus_evenly(qmap->nr_queues);
+	nr_masks = qmap->nr_queues;
+	masks = group_cpus_evenly(&nr_masks);

Hmph. I am a big fan of separating input and output paramenters;
most ABI definitions will be doing that anyway.
Makes it also really hard to track whether the output parameters
had been set at all. Care to split it up?

What API do you have in mind?