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From: Mike Galbraith <efault@gmx.de>
To: Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
	Ingo Molnar <mingo@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Mel Gorman <mgorman@techsingularity.net>,
	Rik van Riel <riel@redhat.com>
Subject: Re: [PATCH] sched: Fix numabalancing to work with isolated cpus
Date: Thu, 06 Apr 2017 09:36:50 +0200	[thread overview]
Message-ID: <1491464210.4718.82.camel@gmx.de> (raw)
In-Reply-To: <1491326848-5748-1-git-send-email-srikar@linux.vnet.ibm.com>

On Tue, 2017-04-04 at 22:57 +0530, Srikar Dronamraju wrote:

> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
> index f045a35..f853dc0 100644
> --- a/kernel/sched/fair.c
> +++ b/kernel/sched/fair.c
> @@ -1666,6 +1666,10 @@ static void task_numa_find_cpu(struct task_numa_env *env,
>  > 	> 	> if (!cpumask_test_cpu(cpu, &env->p->cpus_allowed))
>  > 	> 	> 	> continue;
>  
> +> 	> 	> /* Skip isolated cpus */
> +> 	> 	> if (cpumask_test_cpu(cpu, cpu_isolated_map))
> +> 	> 	> 	> continue;

Methinks that should check for !cpu_rq(cpu)->sd, so the thing doesn't
screw up cpuset isolation either.

	-Mike

  parent reply	other threads:[~2017-04-06  7:37 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-04 17:27 [PATCH] sched: Fix numabalancing to work with isolated cpus Srikar Dronamraju
2017-04-04 18:56 ` Rik van Riel
2017-04-04 20:37 ` Mel Gorman
2017-04-05  1:50   ` Srikar Dronamraju
2017-04-05  8:09     ` Mel Gorman
2017-04-05 12:57 ` Michal Hocko
2017-04-05 15:22   ` Srikar Dronamraju
2017-04-05 16:44     ` Michal Hocko
2017-04-06  7:19       ` Srikar Dronamraju
2017-04-06  7:34         ` Michal Hocko
2017-04-06  9:23           ` Peter Zijlstra
2017-04-06 10:13             ` Michal Hocko
2017-04-06 10:29               ` Peter Zijlstra
2017-04-06 10:42                 ` Michal Hocko
2017-04-06 10:47                   ` Peter Zijlstra
2017-04-06 13:44                     ` Michal Hocko
2017-04-06  7:36 ` Mike Galbraith [this message]
2017-04-06  7:36 ` Peter Zijlstra

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