linux-kernel - Re: [PATCH v2 00/19] Fixes for sched/numa

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Message-ID: <20180723135700.GX2458@hirez.programming.kicks-ass.net>
Date:   Mon, 23 Jul 2018 15:57:00 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Cc:     Ingo Molnar <mingo@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Rik van Riel <riel@...riel.com>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH v2 00/19]  Fixes for sched/numa_balancing

On Wed, Jun 20, 2018 at 10:32:41PM +0530, Srikar Dronamraju wrote:
> Srikar Dronamraju (19):
>   sched/numa: Remove redundant field.
>   sched/numa: Evaluate move once per node
>   sched/numa: Simplify load_too_imbalanced
>   sched/numa: Set preferred_node based on best_cpu
>   sched/numa: Use task faults only if numa_group is not yet setup
>   sched/debug: Reverse the order of printing faults
>   sched/numa: Skip nodes that are at hoplimit
>   sched/numa: Remove unused task_capacity from numa_stats
>   sched/numa: Modify migrate_swap to accept additional params
>   sched/numa: Restrict migrating in parallel to the same node.
>   sched/numa: Remove numa_has_capacity
>   sched/numa: Use group_weights to identify if migration degrades locality
>   sched/numa: Move task_placement closer to numa_migrate_preferred

I took the above, but left the below for next time.

>   sched/numa: Stop multiple tasks from moving to the cpu at the same time
>   mm/migrate: Use xchg instead of spinlock
>   sched/numa: Updation of scan period need not be in lock
>   sched/numa: Detect if node actively handling migration
>   sched/numa: Pass destination cpu as a parameter to migrate_task_rq
>   sched/numa: Reset scan rate whenever task moves across nodes