[RFC/PATCH] Add a device_initcall to machdep_calls

[Benjamin Herrenschmidt]

On Fri, 2007-11-30 at 15:51 -0700, Grant Likely wrote:
> 
> Add a device_initcall hook to machdep_calls so that platform code
> doesn't
> need to register device_initcalls that must first check what platform
> it is running on.
> 
> This should (slightly) speed boot time on kernels that support a lot
> of
> boards and make device_initcall hooks slightly simpler to implement
> because the platform doesn't need to be tested when called.
> 
> Signed-off-by: Grant Likely <grant.likely at secretlab.ca>
> ---
> 
> Please comment; I think this is a good change, but I'd like some
> feedback.

Hrm... I'm not too sure about it... 

My initial idea for dealing with that issue was more along the lines of
defining a set of

machine_xxx_initcall(mach, function)

Where xxx is (arch,core,subsys,fs,device, whatever...)

Those could, at first be implemented as a simple macro wrapper that
expands to a function that tests machine_is() and calls the function,
and later one, we can do more fancy things, such as ELF sections with
function pointers in them.

Ben.