On Wed, Jul 12, 2023 at 08:54:48PM +0800, Ming Lei wrote:
> +/* Max nr_hw_queues for each hw queue type */
> +unsigned int blk_mq_max_nr_hw_queues(void)
> +{
> + if (is_kdump_kernel())
> + return 1;
> + return nr_cpu_ids;
Again, these is_kdump_kernel hacks don't make any sense. The amount
of maximum available CPU needs to come through a proper API, and we
need to use it, not add hacks like this.
The only thing that makes sense here is to find the last CPU
in cpu_possible_mask, and for kdump kernels to ensure that number
is 1 or whatever low value they want.
