On Mon, Dec 13, 2010 at 08:31:28PM +0800, Ming Lei wrote:
2010/12/13 Felipe Balbi <balbi@xxxxxx>:
Hi,
On Mon, Dec 13, 2010 at 07:46:20PM +0800, Ming Lei wrote:
No, only modprobe musb-omap2430 is enough, which has been OK now in
my beagle with this patch set.
If we want to run one single binary to support multiple machines and
if glue driver can't be built as module, we have to load all glue driver
into
ram, which is sure very ugly.
glue layer's probe() won't be called as musb-XXXX won't be available. So
no resources will be used, right ?
It is right, but the glue code without device may consume some memory and
does nothing since it have to be loaded always.
If we can build glue layer driver as module, it will be loaded until there has
the musb-XXXX device. So I think we should support to build glue driver
as module to reduce memory footprint.
see size of glue modules built with this patch set in my beagle-xm:
-rw-rw-r-- 1 500 500 132068 Dec 13 2010 am35x.ko
-rw-rw-r-- 1 500 500 135279 Dec 13 2010 omap2430.ko
-rw-rw-r-- 1 500 500 152696 Dec 13 2010 tusb6010.ko
that's all on .init.text section, no ?!? then it'll be freed after we're
out of initcalls.
--
balbi
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