arch_stack_walk
arch_stack_walk(callchain_trace, entry, current, regs);
arch_stack_walk(get_wchan_cb, &wchan_info, p, NULL);
arch_stack_walk(save_return_addr, &data, current, NULL);
arch_stack_walk(profile_pc_cb, &prof_pc, current, regs);
arch_stack_walk(save_return_addr, &data, current, NULL);
void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie,
arch_stack_walk(consume_entry, &c, current, NULL);
arch_stack_walk(consume_entry, &c, tsk, NULL);
arch_stack_walk(consume_entry, &c, current, regs);