Re: [BProc] missing symbols

[Nicholas H. <he...@se...>]

On Thu, 2003-09-04 at 19:21, J.A. Magallon wrote:
> 
> Oops, I have forgotten it...
> 
> Two things:
> 
> - sys_call_table: this is not a bug, it was unexported to prevent things
>   like BProc does. So it is a good time to start thinking on how to
>   re-implement that functionality. Perhaps a full hook system shared
>   with the security people...

Ok -- not a great thing to export, but for now I am ok with it.

> - RH kernels usually are really -ac kernels, not plain mainline. -ac
>   include the O(1) scheduler, and I think bproc bombs when put togheter
>   with O(1) sched. My -aa kernels patched with bproc worked fine until
>   Andea put in the scheduler. bproc fits ok with a ton of other patches
>   I collect, even once I tried with just the -aa VM and bproc. It worked.
>   So it looks like it is the scheduler.

Sigh -- I can't believe I forgot about O(1) making things go wonky.
Well, I guess I will try and play around with the patches to get things
to behave a bit better.

Does anyone have an idea what in the O(1) scheduler is mucking up
things? Or is it that so many things have changed ?


J.A. -- I have seen your patches in googles here and there, but cannot
seem to find a valid page. Do you have a 'home page' for your patches ?
I would love to play with them a bit.

>   When I have the time I will try to dig this, but not until I submit my
>   thesis...I need to burn the cluster.
> 
> Hope this helps (to do not loose your time, or to shred a light if you
> get it working...)

Appreciate it -- I will be playing with this for a few days, just for
masochism's sake.

> 
> As I look into it, init_new_context sounds about scheduling, and if RH
> patched it...
> And pte_offset sounds about VM management, high pages and so on, and
> RH kernels also have a different VM subsystem than mainline (-rmap).

*grunt* fun.

> In short, a RH kernel has nothing to do with a standard kernel, so
> expect a ton of trouble.

With RH or RH kernels ? :)

Nic
-- 
Nicholas Henke
Penguin Herder & Linux Cluster System Programmer
Liniac Project - Univ. of Pennsylvania