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

[Bodo Eggert]

Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> On Sat, 9 Aug 2008, Andi Kleen wrote:
>> Steven Rostedt <rostedt@xxxxxxxxxxx> writes:

>> > I'm stubborn, I want to get it right _and_ keep it fast.
>> 
>> For me it would seem better to just not use two part 5 byte nops
>> instead of adding such hacks.  I doubt there are that many of them
>> anyways. I bet you won't be able to measure any difference between the
>> different nop types in any macro benchmark.
> 
> I wish we had a true 5 byte nop. The alternative is a jmp 0, which is
> measurable.

Did you try short jumps? (0xeb 0x03 0x?? 0x?? 0x??)

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