如何在Linux内核的一行中打印一条消息 [英] How to print a message in one single line in Linux kernel

问题描述

我正在内核中制作一个简单的enque/deque程序.我想在内核中打印消息，这就是我得到的:

I am making a simple enque/deque program in kernel. I want to print message in kernel, and this is what I got:

[18594.595747] Enqueue 3 
[18594.595748]  queue :  
[18594.595751] 2 
[18594.595751] 1 
[18594.595752] 3 

但是我想不使用换行符来打印它:

But I want to print this without newline:

[8594.595747] Enqueue 3 
[18594.595748]  queue : 2 1 3

这是我的代码的一部分:

This is a part of my code:

   printk(KERN_ALERT "Enqueue %d \n queue :  ", a);
   rear++;
   for(i = front; i<rear; i++)
      printk(KERN_ALERT "%d ", queue_test[i]);  

简而言之，我想在内核中一行打印一条消息.但是，如果我使用printk，它将自动更改行.如何在一行中打印一条消息?

In short, I want to print in kernel a message in one line. But if I use printk, it changes line automatically. How do I print a message in one line?

推荐答案

要防止新行开始，请使用KERN_CONT:

To prevent a new line from being started, use KERN_CONT:

printk(KERN_ALERT "self destruction commences in ");
printk(KERN_CONT "%d", time_remaining);
printk(KERN_CONT " minutes\n");

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