[Buildroot] Stripping kernel modules for ARC

[Arnout Vandecappelle]

On 14-09-16 13:29, Alexey Brodkin wrote:
> Hello,
>
> This is a follow-up of discussion started here
> https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/issues/86
>
> The problem in hand is kernel stack unwinding on ARC historically was done
> with use of debug_frame instead of more common eh_frame. And if stripping
> of target binaries is enabled in Buildroot invocation of strip with
> "--strip-unneeded" gets rid of debug_frame section effectively making
> kernel unwinder helpless.
>
> I'm wondering what would be a better way to strip modules on ARC in Buildroot?
>
> I may see at least following solutions:
>  1. Empty STRIP_STRIP_UNNEEDED or even KSTRIPCMD for ARC
>     This together with
> http://lists.infradead.org/pipermail/linux-snps-arc/2016-September/001483.html
>     will still produce pretty compact .ko files on target

 How about using --keep-symbol to keep the debug_frame? Or is it not a symbol?

>  2. Use objdump instead of strip with explicitly mentioned sections to keep or
> remove
 strip also has --remove-section.

 Regards,
 Arnout


>
> Any thoughts are much appreciated.
>
> -Alexey
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Arnout Vandecappelle arnout at mind be
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