walk_args
count = walk_args(str, NULL, NULL);
(void) walk_args(str, fp, array + nids);
probe_walk_args_t walk_args;
walk_args.input_args_p = input_args_p;
walk_args.di_phdl = di_phdl;
walk_args.pathname = pathname;
&walk_args, process_nexus_node);
struct walk_args *wargs = (struct walk_args *)arg;
struct walk_args *wargs;
struct walk_args *wargs;