| TRACE_PRINTK(9) | Driver Basics | TRACE_PRINTK(9) |
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.
COPYRIGHT¶
| May 2024 | Kernel Hackers Manual 2.6. |