From mboxrd@z Thu Jan  1 00:00:00 1970
From: Juri Lelli <juri.lelli@redhat.com>
Subject: Re: [PATCH] sched/rt: Do not pull from current CPU if only one cpu
 to pull
Date: Mon, 4 Dec 2017 10:07:57 +0100
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Cc: LKML <linux-kernel@vger.kernel.org>,
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        Ingo Molnar <mingo@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Daniel Wagner <wagi@monom.org>,
        Thomas Gleixner <tglx@linutronix.de>
To: Steven Rostedt <rostedt@goodmis.org>
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On 04/12/17 03:09, Steven Rostedt wrote:
> On Mon, 4 Dec 2017 08:45:17 +0100
> Juri Lelli <juri.lelli@redhat.com> wrote:
> 
> > Right. I was wondering however if for the truly UP case we shouldn't be
> > initiating/queueing callbacks (pull/push) at all?
> 
> If !CONFIG_SMP then it's not compiled in. The issue came up when Daniel
> ran a CONFIG_SMP kernel on an arch that only supports UP.
> 

Right, sorry. I meant num_online_cpus() == 1.

Best,

Juri