lkml.org 
[lkml]   [2006]   [Mar]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Doubt about scheduler
Thank you very much Jon. But I think I haven´t explained very well.

I know that now the prio_array and runqueues structs aren´t accesible
for modules, but in the 2.6.5 version they were. I would like to know
the reason, why before they were accesible and now they don´t? If you
could answer me, it would be great. I could to write the reason in my
university job. (In Spain we have to make a final degree job, and mine
is about modules in linux (I chose this), I would like to show
information of the new scheduler, a scheduler monitor, and these fields
are indispensable for me)
I thought in your solution (own kernel tree), but I would like to make a
module that worked in standard distributions. I prefer to make a module
that worked in 2.6.5 version instead to make one that worked in 2.6.12
but with my own kernel tree. So I suposse that I will do that, but
knowing the reason why could serve me to make a better investigation
document.

Thank you again for your help, I will mention you in my final degree job
acknowledge. Please, keep helping me!!! :)



Jon Masters escribió:

>On 3/2/06, Raúl Baena <raul_baena@ya.com> wrote:
>
>
>
>>Hello!!!, I´m a student of computer science and I´m doing my final
>>degree job in linux. It is about "linux kernel modules" , I have to know
>>some things of the scheduler. The runqueue struct, and so on. The
>>problem is that in the last linux kernel version in the "sched.h" isn´t
>>defined these structs (prio_array, runqueue...), and I cann´t access to
>>runqueue or prio_array fields. I know that in the 2.6.5 kernel version
>>these fields were accessible and now don´t, could you tell me what is
>>the reason please?
>>
>>
>
>Deliberately, these aren't available outside of the scheduler so that
>they can't be played with. Much as things like the symbol table aren't
>exported to modules, some things in the kernel aren't even available
>to other parts of the core kernel :-)
>
>
>
>> I think that I´m going to do it (the module) in the 2.6.5 kernel
>>version and will try to explain why, and for this I need your help.
>>
>>
>
>If you really need to play with this stuff, then why not just make
>your own kernel tree with this hacked up in the scheduler code itself?
>If it's just for you, then that'll work fine. If you would explain
>what it is that you need to do, then someone might be able to offer
>you advice on the general direction to take - see also
>http://www.kernelnewbies.org/
>
>Jon.
>
>
>
>
>

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-03-05 14:58    [W:0.116 / U:0.464 seconds]
©2003-2014 Jasper Spaans. Advertise on this site