Rajat Jain <[email protected]> writes: > I found that there are some weird looking instances in kernel where a > function has been DEFINED (as opposite to DECLARED) using and "extern" > keyword. For e.g., the following code in arch/alpha/include/asm/io.h: > > extern inline void __iomem *generic_ioportmap(unsigned long a) > { > return alpha_mv.mv_ioportmap(a); > } > > Using a definition along with extern does not make any sense to me. > Can some one please enlighten what is its use / purpose?
Note that at the same time an "inline" keyword has been used. You might want to refer to GCC's documentation in particular <http://gcc.gnu.org/onlinedocs/gcc/Inline.html> for more information. Google also pointed to this site <http://www.greenend.org.uk/rjk/2003/03/inline.html> which also might have some insight. -- Best regards, _ _ .o. | Liege of Serenly Enlightened Majesty of o' \,=./ `o ..o | Computer Science, Michal "mina86" Nazarewicz (o o) ooo +--<mina86*tlen.pl>--<jid:mina86*jabber.org>--ooO--(_)--Ooo--
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