Re: [PATCH 1/4] x86, ptdump: Add the functionality to dump an arbitrary pagetable

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On 01/16/14 at 02:46pm, Dave Young wrote:
> On 01/15/14 at 08:04pm, H. Peter Anvin wrote:
> > On 01/15/2014 07:03 PM, Dave Young wrote:
> > >>
> > >> making something harder to grep and less standardized is hardly cleaner
> > >> and these things compile to nothing for non-modules.
> > > 
> > > It's not nothing, just very small increasement:
> > >    text	   data	    bss	    dec	    hex	filename
> > > 7636121	1391824	9355264	18383209	1188169	vmlinux
> > > 
> > >    text	   data	    bss	    dec	    hex	filename
> > > 7636113	1391824	9355264	18383201	1188161	vmlinux
> > > 
> > > I do not want to insist on this minor problem, if you want please keep it.
> > > 
> > 
> > Now *that* we can fix by making these macros expand to nothing if you
> > are compiling for a nonmodule, right?  That will benefit code that
> > legitimately can compile as a module but is configured "y", too.
> 
> I'm not sure expanding to nothing is a good fix.
> 
> For built-in module we still can retrieve the module info in userspace via
> /usr/sbin/modinfo, if we expand the Macros to nothing then userspace will
> not see thus infomation anymore.
> 
> Another advantage of built-in module is it has module specific parameters which
> should not necessary a generic kernel parameter.
> 
> If the *module* is really a nonmodule, IMHO it should add the information to

Above I means add infomation to file comment section.

> or add other macros macros instead of reuse the MODULE_*.
> 
> BTW, for macros in this file, for a nonmodule "license GPL" is unnecessary at all.
> 
> Thanks
> Dave
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