Re: Exposing device ids and driver names

[Nathaniel McCallum]

On 10/01/2009 02:40 PM, Greg KH wrote:
> On Thu, Oct 01, 2009 at 02:35:40PM -0400, Nathaniel McCallum wrote:
> > But I still would prefer a non-invasive solution.
>
> Agreed, sorry I don't have an idea on how to do it.

How about this?

-#define MODULE_GENERIC_TABLE(gtype,name)
+#define MODULE_GENERIC_TABLE(gtype,name)               \
+static const struct gtype##_id gtype##_id_table        \
+  __attribute__ ((unused, alias(__stringify(name))))

We add an alias to the existing symbol.  This just creates a new entry 
in the symbol table.  These entries are all stripped anyway and inserted 
into the System.map.

Impact:
	* No change to the resulting vmlinuz binary
	* Increases size of System.map (~2k with the Fedora config)

Nathaniel

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