Thomas Pornin wrote:
> ... These heuristics are tuned for userland code, not kernel code, where
> the situation is different (for instance, memory is much more
> expensive in the kernel, since kernel memory cannot be swapped out).
> Moreover, some experiments showed that, indeed, using -O3 (or -O9)
> instead of -O2 did not give a faster kernel. Reality rulez.
Perhaps -Os should be used (optimise for space). I read it's sometimes
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