> And a popf can be much more expensive than any of these. You should > know, not all instructions are equal. > > Using perf, I've seen popf take up almst 30% of a function the size of > this.
In any case it's a small fraction of the 600+ instructions which are currently executed for every enabled trace point. If ftrace was actually optimized code this would make some sense, but it clearly isn't ... -Andi
