Re: [PATCH 4/9] cpu/SMT: Create topology_smt_threads_supported()

Thomas Gleixner
2023-06-10T22:15:59Z

On Thu, May 25 2023 at 01:56, Michael Ellerman wrote:
> +/**
> + * topology_smt_threads_supported - Check if the given number of SMT threads
> + * is supported.
> + *
> + * @threads: The number of SMT threads.
> + */
> +bool topology_smt_threads_supported(unsigned int threads)
> +{
> + // Only support a single thread or all threads.
> + return threads == 1 || threads == smp_num_siblings;
> +}

You can make that a simple core function when cpu_smt_*_threads is
consistent along the lines of my previous reply.

static bool cpu_smt_num_threads_valid(unsigned int threads)
{
if (IS_ENABLED(CONFIG_SMT_NUM_THREADS_DYNAMIC))
return threads >= 1 && threads <= cpu_smt_max_threads;
return threads == 1 || threads == cpu_smt_max_threads;
}

Or something like that.

Thanks,

tglx