Re: [PATCH] rcupdate: move synchronize_sched() back to rcupdate.c

[Lai Jiangshan <laijs@cn.fujitsu.com>]

Ingo Molnar wrote:
> * Lai Jiangshan <laijs@cn.fujitsu.com> wrote:
> 
>> this fix will increase about several hundred bytes to the kernel 
>> text for rcuclassic.
> 
> hm, why is that, and is it true for the full vmlinux as well, for a 
> reasonably large .config?
> 
> Do you get the size increase even if these two are enabled:
> 
>  CONFIG_CC_OPTIMIZE_FOR_SIZE=y
>  CONFIG_OPTIMIZE_INLINING=y
> 
> ?

almost the same, a half of bytes added to kernel text is from this line:
EXPORT_SYMBOL_GPL(synchronize_sched);

> 
> i'd expect the opposite or same-size: given that an ugly 
> quasi-inlining macro is replaced with a shared, out of line function.
> 
> 	Ingo
> 
> 
>