Rewriting printk()

Posted by bob on May 7, 2019 11:43 PM EDT
Linux Journal; By Zack Brown
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The printk() function is a subject of much ongoing consternation among kernel developers. Ostensibly, it's just an output routine for sending text to the console. But unlike a regular print routine, printk() has to be able to work even under extreme conditions, like when something horrible is going on and the system needs to utter a few last clues as it breathes its final breath.

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