On Fri, 2008-08-29 at 13:48 +0200, David Jander wrote: > On Wednesday 27 August 2008 23:04:39 Steven Munroe wrote: > > On Tue, 2008-08-26 at 08:28 +1000, Benjamin Herrenschmidt wrote: > > > On Mon, 2008-08-25 at 15:06 +0200, David Jander wrote: > > > > Hi Matt, > > > > > > > > On Monday 25 August 2008 13:00:10 Matt Sealey wrote: > > > > > The focus has definitely been on VMX but that's not to say lower > > > > > power processors were forgotten :) > > > > [SNIP] > > > > > > It would be useful of somebody interested in getting things things > > > into glibc did the necessary FSF copyright assignment stuff and worked > > > toward integrating them. > > > > Ben makes a very good point! > > Sounds reasonable... but I am still wondering about what you mean > with "things"? > AFAICS there is almost nothing there (besides the memcpy() routine from > Gunnar > von Boehn, which is apparently still far from optimal). And I was asking for > someone to correct me here ;-) > > > There is also a framework for adding and maintaining optimizations of > > this type: > > > > http://penguinppc.org/dev/glibc/glibc-powerpc-cpu-addon.html > > I had already stumbled across this one, but it seems to focus on G3 or newer > processors (power4). There is no optimal memcpy() for G2/PPC603/e300. > Well folks volunteer to work on code for the hardware they have, use, and care about. I don't have any of that hardware...
this framework can be used to add optimizations for any valid gcc -mcpu=<cpu-type> target. > >[...] > > So it does no good to complain here. If you have core you want to > > contribute, Get your FSF CR assignment and join #glibc on freenode IRC. > > I am not complaining. I was only wondering if it is just me or there really > is > very little that has been done (for either uClibc, glibc, or whatever for > powerpc) to improve performance of (linux-) applications on "lower"-power > platforms (G2 core), AFAICS there is a LOT that can be gained by simple > tweaks. > This is a self help group (free as in freedom) We help each other. And you can help yourself. There is no free lunch. > > And we will help you. [SNIP] > > The problem is: I have very little experience with powerpc assembly and only > very limited time to dedicate to this and I am looking for others who have > Well this will be a good learning experience for you. We will try to answer questions. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
