Messages in this thread | | | Date | Tue, 21 Apr 2009 10:18:30 -0700 | From | Jeremy Fitzhardinge <> | Subject | Re: [PATCH 2/8] tracing: create automated trace defines |
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Mathieu Desnoyers wrote: > * Andi Kleen (andi@firstfloor.org) wrote: > >> Mathieu Desnoyers <compudj@krystal.dyndns.org> writes: >> >> >>> Given how slow function calls are, at least on x86, >>> >> That was with frame pointers right? Frame pointers tend to make >> function calls slow. >> >> > > Looking at my .config, CONFIG_FRAME_POINTER is disabled here. So we > should probably expect an even worse performance impact if we enable > them.
I tried disabling frame pointers, but it looked to me like tracing selects them. Did I misread, or perhaps it was some other config option doing it...
J
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