linux-kernel - Re: [RFC PATCH 1/2] sched: encapsulate priority changes in a sched_set

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Date:	Tue, 7 Jun 2016 09:11:45 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:	Julien Desfossez <jdesfossez@...icios.com>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	rostedt <rostedt@...dmis.org>, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 1/2] sched: encapsulate priority changes in a
 sched_set_prio static function

On Mon, Jun 06, 2016 at 09:47:52PM +0000, Mathieu Desnoyers wrote:
> >> +++ b/kernel/sched/core.c
> >> @@ -2230,6 +2230,11 @@ int sysctl_schedstats(struct ctl_table *table, int write,
> >> #endif
> >> #endif
> >> 
> >> +static void sched_set_prio(struct task_struct *p, int prio)
> >> +{
> >> +	p->prio = prio;
> >> +}

Urgh; so there's a bunch of patches to the PI code that I've been
ignoring that'll completely break all this.

Let me dig them up and get this all sorted.

Basically, looking at @prio is broken.