Re: [PATCH 2/8] tracing: create automated trace defines

From: Jeremy Fitzhardinge
Date: Tue Apr 21 2009 - 13:18:48 EST


Mathieu Desnoyers wrote:
* Andi Kleen (andi@xxxxxxxxxxxxxx) wrote:
Mathieu Desnoyers <compudj@xxxxxxxxxxxxxxxxxx> 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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