What is the adventage of macros against function

[İsmail Baydan]

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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110427/e484bd3b/attachment.html