process tracking

[Mustafa Hussain]

in fact i don't need to change the policy of the process, i just want to
know weather the process is used in rq or not.

for example i have opened a lot  of apps like pdf reader and google chrome
now i'am using google chrome, and still the pdf reader in the rq.. right ?
how can i detect that the user is not using the pdf reader from sched
function ?

On Tue, Apr 21, 2015 at 5:19 AM, Ruben Safir <ruben at mrbrklyn.com> wrote:

> On Mon, Apr 20, 2015 at 11:58:17PM +0200, Mustafa Hussain wrote:
> > I have reading recently how CFS works and I want to detect processes that
> > is not used and have the policy SCHED_NORMAL,
> >
> > Can i do this by tracking load_weight for each process if the load dose
> not
> > change over the time can i consider this process is not used ?
>
> it has nothing to do with the load_weight.  I can be corrected on this
> but it is configuration.
>
> There are functions that can be coded that adjust the class of priority
> for a thread or process such as
>
> /**
>  * sched_setscheduler - change the scheduling policy and/or RT priority
>  * of a thread.
>  * @p: the task in question.
>  * @policy: new policy.
>  * @param: structure containing the new RT priority.
>  *
>  * Return: 0 on success. An error code otherwise.
>  *
>  * NOTE that the task may be already dead.
>  */
> int sched_setscheduler(struct task_struct *p, int policy,
>                        const struct sched_param *param)
> {
>         return _sched_setscheduler(p, policy, param, true);
> }
> EXPORT_SYMBOL_GPL(sched_setscheduler);
>
> in linux/kernel.sched/core.c
>
>
> download the Kernel Source Code and take a look
>
> Ruben
>
>
> > _______________________________________________
> > Kernelnewbies mailing list
> > Kernelnewbies at kernelnewbies.org
> > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
>
> --
> So many immigrant groups have swept through our town
> that Brooklyn, like Atlantis, reaches mythological
> proportions in the mind of the world - RI Safir 1998
> http://www.mrbrklyn.com
>
> DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002
> http://www.nylxs.com - Leadership Development in Free Software
> http://www2.mrbrklyn.com/resources - Unpublished Archive
> http://www.coinhangout.com - coins!
> http://www.brooklyn-living.com
>
> Being so tracked is for FARM ANIMALS and and extermination camps,
> but incompatible with living as a free human being. -RI Safir 2013
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20150421/7bfe7098/attachment.html