Re: [PATCH 1/7] perf: Enable function tracing for perf core

From: Frederic Weisbecker
Date: Sat Sep 08 2012 - 09:07:56 EST


On Sat, Sep 08, 2012 at 07:55:16AM -0400, Steven Rostedt wrote:
> According to Steven R. there is no reason left to not support
> function tracing for the perf core. This makes it easier to debug
> perf.
>
> Don't remove -pg for the x86 and generic perf core.

Actually, perf can use function tracing. A good reason for disabling
function tracing in perf is to avoid the overhead of recursive function
tracing, even though we are protected against tracing re-entrancy, this
still result in some overhead.
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