Re: RFC: Link Time Optimization support for the kernel

[Avi Kivity]

On 08/21/2012 10:49 AM, Ingo Molnar wrote:
> 
> Can the current implementation of LTO optimize to the level of 
> inlining? A lot of our include file hell situation results from 
> the desire to declare structures publicly so that inlined 
> functions can use them directly.
> 
> If data structures could be encapsulated/internalized to 
> subsystems and only global functions are exposed to other 
> subsystems [which are then LTO optimized] then our include
> file dependencies could become a *lot* simpler.

I think modules break this (if I understand what you mean correctly).
If the main kernel exposes symbol x as a global function, then lto will
not inline it into a module.

-- 
error compiling committee.c: too many arguments to function
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