Re: Changing Kernel thread priorities

[Monica Puig-Pey]

El 06/06/11 13:54, Rolando Martins escribió:
> Hi,
> I use the following:
>
> PIDs=$(ps -eLo pid,cls,rtprio,pri,nice,cmd | grep -i "irq" | awk '{
> print $1; }' | xargs echo)
> for i in $PIDs
> do
>      ret=$(chrt -f -p 99 $i)
> done
>
> This will change the kernel thread associated with an irq handler to
> RT FIFO prio 99.
> Just change the script to your specific interrupt.
>
> Hope it helps,
> Rolando
>
> On Mon, Jun 6, 2011 at 12:47 PM, Monica Puig-Pey<puigpeym@xxxxxxxxx>  wrote:
> > I am writing a driver which has one kernel thread associated with it.
> > I want to change the priority of this thread, so that I can specify the
> > order in which it is scheduled following an interrupt.
> > I'm using:
> >
> >   sched_setscheduler(struct task_struct *, int, struct sched_param *);
> >
> > but it doesn't work. I tried to change the priority from the init_module,
> > and also from the Kernel Thread, but there is no way.
> >
> > Kernel version is 2.6.31-11-rt
> >
> > What do I call to change a kernel thread priority?
> >
> > Thanks you very much
> >
> > Mónica
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in
> > the body of a message to majordomo@xxxxxxxxxxxxxxx
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html

I need to change the priority from inside the driver, when creating the 
kernel thread.
Your script is useful but it is done in user context,
Any other help please?

Mónica


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