debugging kernel code..

[Pranav Peshwe]

On 2/18/06, divyesh shah <divs_83 at yahoo.com> wrote:
> I have added a system call and a somple program which
> uses that call. However, I need to debug my system
> call code. gdb doesn't help as it doesnt allow me to
> step into kernel level code from my user test program.
> Is there any way I can write debug information(say
> like printf statements)? I have seen some kernel code
> using printf's but I wonder where would they be
> printed out. Is there some kind of kernel log file??
>
Hello,
          You can use printfs in your module.You will be able to see
whatever you have printfed on the console,also it is logged in the
ASCII text file - /var/log/messages. You can use uprintf if you do not
want to log the messages in the file but want to see them on
console.You can configure DDB and remote GDB (using a serial line) for
debugging kernel code/modules.

HTH.

Regards,
Pranav

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