What is the adventage of macros against function

[Naveen Kumar]

Actually you will see lot of macros defined to achieve small and modular
functionality.
this makes your code faster to execute but the binary size will be bigger.

You will see this in kernel code more because we have very low stack area
sometime may be one page(4096 bytes) of memory.
automatic variable declare and defined in function will occupy space in
stack.

In application side C expert suggest to have functions because we have very
big stack area and function adds readability
with easy debugging.

I hope this will help you in your kernel context.

Thanks,
Naveen

2011/4/27 İsmail Baydan <ibaydan at gmail.com>

> Currently I am trying to learn linux kernel while looking around I saw that
> a lot of function likes macros are defined.What is the adventage of macros
> over functions.
> Thanks
>
> --
> İsmail Baydan
>
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