On Mon, 2005-05-09 at 16:02 +0200, Ingo Molnar wrote:
> * kus Kusche Klaus <[email protected]> wrote:
>
> > I've been asked to analyze the various tools and possibilities
> > available to debug an RT kernel.
> >
> > Up to now, what I've found is not too impressive:
> > * Plain GDB can be used to display the current value of kernel variables
> > symbolically, but no more: It won't tell anything about the kernel's
> > current activity.
> > * kgdb and kdb seem to be deeply incompatible with the RT patches (they
> > mess with the scheduler, interrupts etc.), applying their patches to an
> > RT tree fails quite impressively.
>
> kgdb is in the -mm tree, and there are periodic ports to the -mm tree.
> Someone used it too on PREEMPT_RT - with some success. There's no deep
> incompatibility with the -RT kernel - just line-for-line collisions.
That was me. And it did work. Ingo is right, I only had to make some
trivial changes to apply the patch.
Lee
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