linux-kernel - Re: [RFC][PATCH 0/8] sched,idle: need resched polling rework

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Message-ID: <20140603065101.GF11096@twins.programming.kicks-ass.net>
Date:	Tue, 3 Jun 2014 08:51:01 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>, nicolas.pitre@...aro.org,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Mike Galbraith <umgwanakikbuti@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC][PATCH 0/8] sched,idle: need resched polling rework

On Mon, Jun 02, 2014 at 11:40:26PM -0700, Andy Lutomirski wrote:
> Bugs found so far:
> 
> defined(SMP) should be defined(CONFIG_SMP)
> 
> You're testing polling on the task being woken, which cannot possibly
> succeed: the only tasks that have any business polling are the idle
> tasks.  Something like this seems to help:

Urgh,. comes from doing too many things at once.. Thanks, I'll go fix
up.

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