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Date: Mon, 25 Jul 2011 08:25:42 +0200 From: Ingo Molnar <mingo@...e.hu> To: Anton Blanchard <anton@...ba.org> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>, Paul Mackerras <paulus@...ba.org>, Arnaldo Carvalho de Melo <acme@...stprotocols.net>, emunson@...bm.net, linux-kernel@...r.kernel.org Subject: Re: [PATCH] perf: Fix symbol resolution on old ppc64 ABI * Anton Blanchard <anton@...ba.org> wrote: > The synthetic symbol creation code has an issue with the old ppc64 > ABI. We end up with duplicate symbols of different sizes that > overlap. > > To fix this, walk all of the symbols and remove any duplicates that > are the length of a function descriptor. > I'd prefer not to add a ppc64 specific hack here, but I'm not sure > how we can fix this in a simpler way. Symbol space problems are common on other architectures as well. We could use a heuristic: when symbols are overlapping then we could throw away the one that is smaller. This would implicitly cover the ppc64 case, right? I'd also suggest we warn somewhere that a symbol has been thrown away, if verbosity is turned off. (i.e. don't warn by default.) Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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