Re: [PATCH 0/5] ftrace: to kill a daemon

[Andi Kleen]

> I wish we had a true 5 byte nop. The alternative is a jmp 0, which is 
> measurable.  This is replacing mcount from a kernel compile with the -pg 

Scary usage.  How much is the difference? 

BTW a good way to get most of that back would be to not use frame 
pointers if you have them enabled ;-) Unfortunately recently
the "select FRAME_POINTER"s keep creeping all over so far too many kernels
suffer from this slow mode now :-/

-Andi
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