Re: [rtl] Debugging RT tasks

[Andi Kleen <ak@muc.de>]

In article <199909111602.MAA00083@hoover.gilbarco.com>,
"Williams, Rodger" <rodger_williams@gilbarco.com> writes:

> The R2D2 Debugger is available at no charge for personal and academic use,
> and $199 per seat license for commercial developers. 

Amazing that they charge so much for a easy hack of kgdbstub. If it patches
any kernel/rtlinux code that part will be GPLed anyways. If it patches
any GDB or DDD code that part too. So there is probably not too much
left in between.

> For kernel based applications, such as device drivers, a run-time debugger
> has not been available at all until now. As any programmer is aware, code
> development within the kernel space is a dangerous endeavor which can only
> too easily lead to a system lock-up. One of the major benefits of the

This is clearly wrong. gdbstub for the linux kernel has existed for years, 
SGI kdb for months. Although they don't work for rtlinux threads ATM they
work do just fine for other kernel code. 


-Andi
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