Re: [PATCH] Built kernel without -O2 option

Jan Kratochvil
2010-11-29T19:06:08Z

On Mon, 29 Nov 2010 04:56:15 +0100, Hui Zhu wrote:
> So I make a patch that add a option in "Kernel hacking" called "Close
> GCC optimization". It will make kernel be built without -O2.

This seems to me as a workaround. The real fix would be to use
__attribute__((always_inline))
for functions requiring to be inlined and just compile everything with -O0 -g.

info '(gcc)Function Attributes'
`always_inline'
Generally, functions are not inlined unless optimization is specified.
For functions declared inline, this attribute inlines the function
even if no optimization level was specified.

But `always_inline' has been discussed on linux-kernel million times.
I have not googled out a resolution why it is not applicable to this problem,
do you know why?

Thanks,
Jan