Messages in this thread | | | Date | Fri, 8 Aug 2008 17:51:16 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [PATCH 0/5] ftrace: to kill a daemon |
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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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