On Thu, 15 Feb 2007 19:55:29 -0500
Andres Salomon <[email protected]> wrote:
> Andrew Morton wrote:
> > On Thu, 15 Feb 2007 05:08:21 -0500
> > Andres Salomon <[email protected]> wrote:
> >
> >> Initial framework for disabling PS/2 protocol extensions. The current
> >> protocols can only be disabled if CONFIG_EMBEDDED is selected. No
> >> source files are changed, merely build stuff.
> >
> > ugleee. What benefit do we get for all this additional maintenance burden?
>
> On any platform where you know exactly what ps/2 device you'll have
> plugged in, you can cut the size of psmouse.ko in half by disabling
> protocol extensions that are not in use.
hm, saving 4k or so.
Oh well, let's leave that up to Dmitry.
> For future protocol extension additions, we can add them without making
> the psmouse driver even larger. We have one queued up for OLPC's
> touchpad which we'd like to get included in mainline, and it was made
> clear that being able to disable protocol extensions was a prerequisite
> for getting it included. The OLPC ps/2 protocol extension would be
> disabled unless CONFIG_EMBEDDED and CONFIG_MOUSE_PS2_OLPC were both enabled.
>
> See http://lkml.org/lkml/2006/9/11/200
Perhaps a nicer implementation would be to have a separate .c file for each
variant.
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