TRACE_PRINTK

Section: Driver Basics (9)
Updated: February 2011
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NAME

trace_printk - printf formatting in the ftrace buffer  

SYNOPSIS

trace_printk(fmt, args...);
 

ARGUMENTS

fmt

the printf format for printing

args...

variable arguments
 

NOTE

__trace_printk is an internal function for trace_printk and the ip is passed in via the trace_printk macro.

This function allows a kernel developer to debug fast path sections that printk is not appropriate for. By scattering in various printk like tracing in the code, a developer can quickly see where problems are occurring.

This is intended as a debugging tool for the developer only. Please refrain from leaving trace_printks scattered around in your code.  

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