Re: A small change in the scheduler

[Karane Mariano Vieira <karane@xxxxxxxxx>]

Hi Rik,
thank you for your answer. I have still some.

I have seen the flags but I have not yet understood the difference between:
CLONE_PTRACE,  CLONE_VFORK, CLONE_STOPPED ?

The comments weren't clear for me.

And, what is PT_PTRACE?


On 5/29/05, Rik van Riel <riel@xxxxxxxxxxx> wrote:
> On Sun, 29 May 2005, Karane Mariano Vieira wrote:
> 
> > I would like to change the way the scheduler delivers the timeslices,
> > it is the goal of a small homework in my university.
> 
> In that case, I won't tell you the answers.  I'll only
> tell you where to look ;)
> 
> > I´d like to know:
> >  - the exactly moment (in the code) the a task receives its timeslice
> 
> The central function for the scheduler is schedule()
> in kernel/sched.c.
> 
> >  - Is there any differency between the code which deal with processes
> > and threads
> 
> Please take a look at kernel/fork.c, in particular
> the function do_fork() and the functions it calls.
> Pay particular attention to the flags...
> 
> --
> "Debugging is twice as hard as writing the code in the first place.
> Therefore, if you write the code as cleverly as possible, you are,
> by definition, not smart enough to debug it." - Brian W. Kernighan
> 


-- 
Karane.

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