[arch-general] CONFIG_CC_OPTIMIZE_FOR_SIZE is not set

[James Rayner]

> Sascha Siegel schrieb:
>> Hi,
>>
>> can someone tell my whats the reason for building the arch-kernel with
>> "# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set"?
>>
>> Thank you!
>
> Optimizing for size sacrifices performance. Read the gcc documentation
> about the -O{1,2,3,s} options.

I remember a few kernel devs recommending size. It was to reduce the
number of cache misses and improve CPU cache utilisation, avoiding RAM and
L2 cache. Fedora/RHEL appears to optimize for size.

That was a while ago when I was doing some kernel stuff.... so I could be
wrong.