Re: [patch 1/17] Infrastructure to mark exported symbols as unused-for-removal-soon

[Arjan van de Ven <arjan@linux.intel.com>]

Randy.Dunlap wrote:
> On Tue, 02 May 2006 16:53:07 +0200 Arjan van de Ven wrote:
>
> > Hi,
> > As discussed on lkml before; the patch with the infrastructure to deprecate unused symbols
> >
> > This is patch one in a series of 17; to not overload lkml the other 16 will be mailed direct;
> > people who want to see them all can see them at http://www.fenrus.org/unused
> >
> >
> >
> > This patch temporarily adds EXPORT_UNUSED_SYMBOL and EXPORT_UNUSED_SYMBOL_GPL.
> > These will be used as transition measure for symbols that aren't used in the 
> > kernel and are on the way out. When a module uses such a symbol, a warning
> > is printk'd at modprobe time.
> >
> > The main reason for removing unused exports is size: eacho export takes roughly
> > between 100 and 150 bytes of kernel space in the binary. This patch gives
> > users the option to immediately get this size gain via a config option.
>
> Do the exports take any space at runtime in RAM?

yes; roughly 100 to 150 bytes or so

> scsi patch comments (only one that I have seen) say:
> +EXPORT_UNUSED_SYMBOL(scsi_print_status); /* removal in 2.6.19 */
>
> and When: above says "before 2.6.19".  Those don't agree.
> Please fix.  Thanks.

there's no conflict actually; they'll be gone in 2.6.19, by removing them just before that ;)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/