[RFC PATCH 2/4] eal: allow applications to report their cpu utilization

[Stephen Hemminger]

On Wed, 23 Nov 2022 11:19:29 +0100
Robin Jarry <rjarry at redhat.com> wrote:

> +static rte_lcore_busy_percent_cb lcore_busy_cb;
> +static unsigned int lcore_busy_period;
> +
> +void
> +rte_lcore_register_busy_percent_cb(rte_lcore_busy_percent_cb cb, unsigned int period)
> +{
> +	lcore_busy_cb = cb;
> +	lcore_busy_period = period;
> +}
> +
> +static int
> +lcore_busy_percent(unsigned int lcore_id)
> +{
> +	int percent = -1;
> +	if (lcore_busy_cb)
> +		percent = lcore_busy_cb(lcore_id);
> +	if (percent > 100)
> +		percent = 100;
> +	return percent;
> +}

This is a case where floating point double precision might be
a better API.