On Wed, 2013-09-25 at 11:00 +0200, Hannes Frederic Sowa wrote:
> /*
> + * Busy loop until the nonblocking_pool is intialized and return
> + * random data in buf of size nbytes.
> + *
> + * This is used by the network stack to defer the extraction of
> + * entropy from the nonblocking_pool until the pool is initialized.
> + *
> + * We need to busy loop here, because we could be called from an
> + * atomic section.
> + */
> +void get_random_bytes_busy_wait_initialized(void *buf, int nbytes)
> +{
> + while (!nonblocking_pool.initialized)
> + cpu_relax();
> + get_random_bytes(buf, nbytes);
> +}
No idea if this can work if called from IRQ context.
How is nonblocking_poll initialized if host has a single cpu ?
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