Re: What do people think about not installing a stripped /kernel
Hi Matt,
I'm compiling my kernel with -gstabs, and I wouldn't mind installing it as
non-stripped, but I'm constantly running out of memory on my / partition
(set up as 256M), mostly because of the modules all getting built with
-gstabs as well. From my perspective it would be a lot more useful to not
have debug info in all of the modules and have a full-on debuggable kernel.
Actually, to be honest I'm not sure what the procedure is to make gdb aware
of loaded modules. So, when I was having a bunch of ndis related panics, I
could guess that parts of the tracebacks were in ndis or if_ndis because
some funcs had no symbolic info. But I suppose at that point all I could do
was perhaps some objdumps on the modules, try to guess where they were
getting loaded into ram, and then extrapolate that info to figure out what
those non-symbol functions were ...
So yeah I'm all for a debuggable kernel, but I'd also like to see modules
installed without debug info by default.
Andrew.
Matthew Dillon wrote:
> The only cost is disk space... e.g. 3MB stripped kernel verses 16MB
> debug kernel. But the debug info isn't actually loaded into memory so
> the kernel load time and memory overhead is the same as with the
> stripped version.
>
> The issue is bug reports and kernel core dumps. I can't count the
> number of times I have had to carefully instruct people to retrieve
> their
> kernel.debug's for bug reporting purposes. And even my own debugging
> would be more convenient if I didn't have to save off a separate copy
> of the debug version of the kernel.
>
> What I'm thinking of doing is having the installkernel target install
> the debug version rather then the stripped version unless told to
> install the stripped version with a new option, e.g. 'options
> INSTALL_STRIPPED'. We would ship full debug GENERIC kernels instead of
> stripped kernels. i.e. we aren't getting rid of the ability to install
> a stripped kernel, we just aren't making it the default any more.
>
> What do people think?
>
> -Matt
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