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Re: [Xen-devel] [PATCH v2 08/11] xen: sched: allow for choosing credit2 runqueues configuration at boot

On Thu, 2016-04-07 at 16:04 +0100, George Dunlap wrote:
> On 07/04/16 06:04, Juergen Gross wrote:
> > On 06/04/16 19:23, Dario Faggioli wrote:
> > > @@ -2170,6 +2234,8 @@ csched2_init(struct scheduler *ops)
> > >      printk(" load_window_shift: %d\n", opt_load_window_shift);
> > >      printk(" underload_balance_tolerance: %d\n",
> > > opt_underload_balance_tolerance);
> > >      printk(" overload_balance_tolerance: %d\n",
> > > opt_overload_balance_tolerance);
> > > +    printk(" runqueues arrangement: per-%s\n",
> > > +           opt_runqueue == OPT_RUNQUEUE_CORE ? "core" :
> > > "socket");
> > I asked this before: shouldn't the optiones "node" and "all" be
> > respected here, too?
> Dario, would it make sense to put the string names ("core", "socket",
> &c) in an array, then have both parse_credit2_runqueue() iterate over
> the array to find the appropriate numeric value, and have this use
> the
> array to convert from the numeric value to a string?
Ok, I'll do that.

Even if I do, though, I can't get rid of the OPT_RUNQUEUE_CORE, etc.,
symbols, as I need to figure out what the numeric value found during
parsing actually means in cpu_to_runqueue().

I know you're not mentioning this, but I felt like I better make this
clear, in case one would expect for those to go away too.

In any case, you'll see this in the patch.

Thanks and Regards,
<<This happens because I choose it to happen!>> (Raistlin Majere)
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

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