On Sunday 13 August 2006 17:28, Adrian Bunk wrote:
> > It's needed for external debuggers and overhead is very small.
> >...
>
> We are currently trying to remove exports not used by any in-kernel
> code.
That ``we'' doesn't include me at least.
>
> The patch description also lacks the name of what you call "external
> debuggers" (I assume the exports are not for a theoretical usage but for
> an already existing debugger?).
The fault chain is needed for pretty much any debugger, including
kgdb, kdb, nlkd. The one in this case was NLKD.
> Especially nowadays where people demand deprecation periods for removing
> exports without any in-kernel users there must be a _very_ good
> justification when adding such exports.
I've always exported symbols when people can make a reasonable case that they
need it for extern free non broken by design code.
On the other hand I have no problems with removing unused exports
that don't have such a case or are clearly not a useful external
interface.
> BTW1: The subject of this email is wrong (it's the x86_64 patch).
Fixed, thanks
-Andi
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