* 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.
Ingo
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