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Date:   Mon, 1 Jul 2019 16:04:34 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Patrick Bellasi <patrick.bellasi@arm.com>
Cc:     subhra mazumdar <subhra.mazumdar@oracle.com>,
        linux-kernel@vger.kernel.org, mingo@redhat.com, tglx@linutronix.de,
        steven.sistare@oracle.com, dhaval.giani@oracle.com,
        daniel.lezcano@linaro.org, vincent.guittot@linaro.org,
        viresh.kumar@linaro.org, tim.c.chen@linux.intel.com,
        mgorman@techsingularity.net, Paul Turner <pjt@google.com>,
        riel@surriel.com, morten.rasmussen@arm.com
Subject: Re: [RESEND PATCH v3 0/7] Improve scheduler scalability for fast path
Message-ID: <20190701140434.GW3402@hirez.programming.kicks-ass.net>
References: <20190627012919.4341-1-subhra.mazumdar@oracle.com>
 <20190701090204.GQ3402@hirez.programming.kicks-ass.net>
 <20190701135552.kb4os6bxxhh2lyw6@e110439-lin>
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On Mon, Jul 01, 2019 at 02:55:52PM +0100, Patrick Bellasi wrote:
> On 01-Jul 11:02, Peter Zijlstra wrote:

> > Some of the things we could tie to this would be:
> > 
> >   - select_idle_siblings; -nice would scan more than +nice,
> 
> Just to be sure, you are not proposing to use the nice value we
> already have, i.e.
>   p->{static,normal}_prio
> but instead a new similar concept, right?

Correct; a new sched_attr::sched_latency_nice value, which is like
sched_nice, but controls a different dimmension of behaviour.