503 	FILE *inf = fopen("/proc/filesystems", "r");  in check_resctrlfs_support()  local
508 	if (!inf)  in check_resctrlfs_support()
511 	res = fgrep(inf, "nodev\tresctrl\n");  in check_resctrlfs_support()
518 	fclose(inf);  in check_resctrlfs_support()
538 char *fgrep(FILE *inf, const char *str)  in fgrep()  argument
543 	while (!feof(inf)) {  in fgrep()
544 		if (!fgets(line, 256, inf))  in fgrep()
569 	FILE *inf;  in validate_resctrl_feature_request()  local
588 	inf = fopen(res_path, "r");  in validate_resctrl_feature_request()
589 	if (!inf)  in validate_resctrl_feature_request()
592 	res = fgrep(inf, feature);  in validate_resctrl_feature_request()
594 	fclose(inf);  in validate_resctrl_feature_request()