Red Hat Training

A Red Hat training course is available for Red Hat Enterprise Linux

function::printk

Name

function::printk — Send a message to the kernel trace buffer

Synopsis

printk(level:long,msg:string)

Arguments

level
an integer for the severity level (0=KERN_EMERG ... 7=KERN_DEBUG)
msg
The formatted message string

Description

Print a line of text to the kernel dmesg/console with the given severity. An implicit end-of-line is added. This function may not be safely called from all kernel probe contexts, so is restricted to guru mode only.