Re: [dpdk-dev] [PATCH v5 2/2] eal/linux: Add support for handling built-in kernel modules

[Stephen Hemminger <stephen@networkplumber.org>]

On Wed, 9 Dec 2015 14:19:58 +0100
Kamil Rytarowski <Kamil.Rytarowski@caviumnetworks.com> wrote:

> +	/* Check if there is sysfs mounted */
> +	if (stat("/sys/module", &st) != 0) {
> +		RTE_LOG(DEBUG, EAL, "sysfs is not mounted! error %i (%s)\n",
> +			errno, strerror(errno));
>  		return -1;
>  	}

This check is redundant. Remove it.
If the later "/sys/module/foo" would fail if /sys/module was not present.

> -	while (!feof(fd)) {
> -		n = fscanf(fd, "%29s %*[^\n]", mod_name);
> -		if ((n == 1) && !strcmp(mod_name, module_name)) {
> -			ret = 1;
> -			break;
> -		}
> +
> +	/* A module might be built-in, therefore try sysfs */
> +	n = snprintf(sysfs_mod_name, PATH_MAX, "/sys/module/%s", module_name);