Messages in this thread | | | Date | Tue, 5 Aug 2014 17:07:28 -0400 | From | "Frank Ch. Eigler" <> | Subject | Re: [PATCH 3.15 33/37] Fix gcc-4.9.0 miscompilation of load_balance() in scheduler |
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Hi -
> >>. I don't disagree it should be > >> disabled by default, but making it unconditional is going to force the > >> distributions that care about perf, systemtap, and debuggers to > >> manually revert this. > > > > Bah. I bet I use 'perf' more than most, and it doesn't care about > > debug info.
Actually, "perf probe" does (via HAVE_DWARF_SUPPORT), to place probes and to extract variables at those probes, much as systemtap does. Without var-tracking, probes placed at most interior points of functions will make variables inaccessible.
Do you need a fully worked out example to see this?
- FChE
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