On Fri, Sep 09, 2005 at 12:14:38PM +0100, Hugh Dickins wrote: > > Ah, right. I'm using kdb with it. (And my recollection of when > show_stack did have a framepointer version, is that it was hopelessly > broken on interrupt frames, and we're much better off without it.)
Not sure if the x86-64 kdb had code to follow them either. The i386 one has. > > > The only reason to use them would be external debuggers, but those > > don't need them on x86-64 neither. > > Don't need them, but find them as useful on x86_64 as on i386? > > Certainly, I can go on patching in FRAME_POINTERs for x86_64 > as I have done, no problem with that. But it seems both bogus > and unhelpful to have that "&& !X86_64" in lib/Kconfig.debug - > framepointers are as helpful/useless on x86_64 as the rest. The original reason was that they were never enabled because nobody passed -fno-omit-frame-pointer. That was apparently later fixed. But kdb should be using a dwarf2 unwinder instead. kgdb certainly supports that, as does NLKD. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
