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Date: Fri, 28 Mar 2008 02:08:43 +0900
From: "KOSAKI Motohiro" <m-kosaki@ceres.dti.ne.jp>
To: "Ingo Molnar" <mingo@elte.hu>
Subject: Re: [patch for 2.6.26 0/7] Architecture Independent Markers
Cc: "Mathieu Desnoyers" <mathieu.desnoyers@polymtl.ca>,
       akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
       "Linus Torvalds" <torvalds@linux-foundation.org>
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Hi

>      text    data     bss     dec     hex filename
>     37642    7014     384   45040    aff0 sched.o.before
>     37930    7134     384   45448    b188 sched.o.after
>
>  288 bytes for only 3 markers in the scheduler - that's 96 bytes added
>  per every marker (44 bytes of that in the fastpath).
>
>  and the tracer codepath is now slower and more complex as well.
>
>  A classic lose-lose situation, so let's apply this patch. Not!
>
>  NACK-ed-by: Ingo Molnar <mingo@elte.hu>

I wonder why nobody doesn't fix this serious problem until now.
and I am interesting to what difference to ftrace and marker.

if I have time at next week, I will investigate the marker problem.