linux-kernel - Re: [PATCH v2 0/3] Disable sched_numa

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Message-ID: <20150902093354.GS16853@twins.programming.kicks-ass.net>
Date:	Wed, 2 Sep 2015 11:33:54 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Cc:	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
	Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>
Subject: Re: [PATCH v2 0/3] Disable sched_numa_balancing on uma systems

On Tue, Aug 11, 2015 at 04:30:10PM +0530, Srikar Dronamraju wrote:
> With recent commit 2a1ed24 ("sched/numa: Prefer NUMA hotness over cache
> hotness") sets sched feature NUMA to true. This can enable numa hinting
> faults on a uma system.
> 
> This patchset ensures that numa hinting faults occur only on a numa system
> by setting/resetting sched_numa_balancing.
> 
> This patchset
> - Renames numabalancing_enabled to sched_numa_balancing
> - Makes sched_numa_balancing common to CONFIG_SCHED_DEBUG and
>   !CONFIG_SCHED_DEBUG. Earlier it was only in !CONFIG_SCHED_DEBUG
> - Checks for sched_numa_balancing instead of sched_feat(NUMA)
> - Removes NUMA sched feature
> 
> Srikar Dronamraju (3):
>   sched/numa: Rename numabalancing_enabled to sched_numa_balancing
>   sched/numa: Disable sched_numa_balancing on uma systems
>   sched/numa: Remove NUMA sched feature
> 
>  kernel/sched/core.c     | 16 +++-------------
>  kernel/sched/fair.c     |  8 ++++----
>  kernel/sched/features.h | 16 ----------------
>  kernel/sched/sched.h    | 10 ++--------
>  4 files changed, 9 insertions(+), 41 deletions(-)

Thanks!
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