Re: stack dumps, CONFIG_FRAME_POINTER and i386 (was Re: sysrq showsimpossible call stack)

[Andrew Morton]

Andrew Morton <akpm@xxxxxxxx> wrote:
>
> Roland Dreier <roland@xxxxxxxxxxx> wrote:
>  >
>  >     Adam> This problem was annoying me a few months ago so I coded up
>  >     Adam> a stack trace patch that actually uses the frame pointer.
>  >     Adam> It is currently maintained in -mjb but I have pasted below.
>  >     Adam> Hope this helps.
>  > 
>  > Thanks, that looks really useful.  What is the chance of this moving
>  > from -mjb to mainline?
> 
>  Good, but it needs to be updated to do the right thing with 4k stacks when
>  called from interrupt context.

Also, I'd like to be convinced that it does the right thing across assembly
code which doesn't set up a correct frame pointer, such as down().

I assume it will simply skip that frame altogether?
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