Re: [PATCH 6/8] nitro_enclaves: Expose CPU pool state under sysfs

[Arnd Bergmann]

On Thu, Jul 30, 2026, at 14:53, Alexander Graf wrote:

> +static ssize_t total_show(struct device *dev, struct device_attribute *attr,
> +			  char *buf)
> +{
> +	ssize_t ret;
> +
> +	mutex_lock(&ne_cpu_pool.mutex);
> +	ret = sysfs_emit(buf, "%*pbl\n", cpumask_pr_args(&ne_cpu_pool.pool_cpus));
> +	mutex_unlock(&ne_cpu_pool.mutex);
> +
> +	return ret;
> +}
> +static DEVICE_ATTR_RO(total);
> +
> +static ssize_t used_show(struct device *dev, struct device_attribute *attr,
> +			 char *buf)
> +{
> +	ssize_t ret;
> +
> +	mutex_lock(&ne_cpu_pool.mutex);
> +	ret = sysfs_emit(buf, "%*pbl\n", cpumask_pr_args(&ne_cpu_pool.claimed_cpus));
> +	mutex_unlock(&ne_cpu_pool.mutex);
> +
> +	return ret;
> +}
> +static DEVICE_ATTR_RO(used);

The names are a bit inconsistent: you have pool/claimed for the internal
structure but total/used for the ABI. It might help to pick one set of
names here.

      Arnd