Re: [PATCH] asm-generic magic

[george anzinger <george@mvista.com>]

David S. Miller wrote:
>    From: george anzinger <george@mvista.com>
>    Date: Wed, 07 May 2003 08:08:38 -0700
>    
>    Also, if you are introducing a file with asm code, you either cause
>    all "other" archs to fail (till they catch up) or you must
>    introduce the simple one line file in each arch.
> 
> This is desirable behavior, then the arch maintainer sees the breakage
> and if the asm-generic solution is appropriate he makes that
> decision.
> 
> I don't think you want to play expert for port maintainers.
> 
> I sense that you want to be able to do "instant ports" to
> some architecture.  This isn't the way to do it.  Instead
> tar up a template set of asm-foo/ header files, and dump that
> into the directory for your new port.

For the record, I don't and have not done ports.

Rather I was interested in introducing a scaled math header.  It would 
contain routines to allow access to the 64 bit mpy and div 
instructions, which ,of course, can be done in C but, if you don't 
want the 64-bit lib, must be done with a rather large bit of code to 
do simple s32=s64/s32 and s32=s64%s32 calculations.  And, on 64-bit 
archs the whole problem goes away.
> 
> I see absolutely no value whatsoever to what you are proposing.
> In fact, I frankly think it sucks. :(

I understand what you think, but don't understand why you think that :(
> 
> 

-- 
George Anzinger   george@mvista.com
High-res-timers:  http://sourceforge.net/projects/high-res-timers/
Preemption patch: http://www.kernel.org/pub/linux/kernel/people/rml