How to change the printk level?

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
1

Dear sir:

If i want to print all the level kernel message printed by printk in the kernel source code , how to modify?
For example, if i want to print (KERN_INFO, KERN_DEBUG, KERN_ERR), how to modify?

2

echo $level > /proc/sys/kernel/printk

3

Tks!

What is the meaning of “$level” ?

4

You can use google search to find an answer when it is not tegra related issue.

For example, Message logging with printk — The Linux Kernel documentation

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