[linuxsh-dev] Re: memcpy/TLBMiss patch assembled for 2.4.18cvs

[Masahiro A. <m-...@aa...>]

I still haven't being able to make TLB-Miss handling speed-up part work on
my SolutionEngine.
I must do something else right now so my investigation pends now. I
really appreciate if anyone can help on this. If anyone can give more
info/suggestion/patch, I'll try that.

In the mean time, I've put "memcpy speed-up" part only patch on the
server, for anyone interested.
<ftp://ftp.aandd.co.jp/pub/linuxsh/work/20030129/>

On Mon, 27 Jan 2003 14:10:42 +0900
Masahiro Abe <m-...@aa...> wrote:

> I'm sorry but my test had a mistake...
> 
> Announced patch doesn't work on my SolutionEngine 7750S.
> "Unable to handle kernel paging request" occurs inside remap_area_pte.
> It's called as
> start_kernel
>   |-->mem_init
>         |-->p3_cache_init
>               |-->remap_area_pages
>                     |-->remap_area_pmd
>                           |-->remap_area_pte
> Will do some more investigation...
> 
> On Sun, 26 Jan 2003 19:06:18 +0900
> Masahiro Abe <m-...@aa...> wrote:
> 
> > I'm trying Mr. Stuart Menefy's "memcpy speed-up" and "TLB Miss Handling
> > optimization" patch with 2.4.18cvs source, on SolutionEngine 7750S, in
> > the hope that they may improve the behavior of RTLinux-patched kernel.
> > 
> > Now it's build and seems to work without problems. I don't have
> > performance figure yet, but thought some of you might try his work with
> > relatively easier way, I've put simple patch files on our server.
> > 
> > <ftp://ftp.aandd.co.jp/pub/linuxsh/work/20030126/>
> > 
> > There are three patches there.
> > -diff-2.4.18-cvs.diff.bz2 is to apply changes to stock 2.4.18 kernel,
> > and make it same as the "linux-2_4_18" tagged cvs source.
> > -diff-2.4.18cvs-se.diff.bz2 is to apply to the "linux-2_4_18" tagged cvs
> > source, and make it boot from CompactFlash on SolutionEngine 7750S. This
> > is not needed for other platforms.
> > -diff-2.4.18se-su-20030126-1.diff.bz2 is the main patch file of today.
> > This is to apply to the "linux-2_4_18" tagged cvs source. Includes "memcpy
> > speed-up" and "TLB Miss Handling optimization" patch.

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Masahiro ABE, A&D Co., Ltd. Japan