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

[Linus Torvalds]

On Fri, 8 Aug 2008, Jeremy Fitzhardinge wrote:
>
> Steven Rostedt wrote:
> > I wish we had a true 5 byte nop. 
> 
> 0x66 0x66 0x66 0x66 0x90

I don't think so. Multiple redundant prefixes can be really expensive on 
some uarchs.

A no-op that isn't cheap isn't a no-op at all, it's a slow-op.

			Linus
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