Messages in this thread | | | Date | Sat, 9 Aug 2008 03:19:55 +0200 | From | Andi Kleen <> | Subject | Re: [PATCH 0/5] ftrace: to kill a daemon |
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> 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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