linux-kernel - Re: [PATCH v3 0/3] Take the scheduling domain into account in numa balancin

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Message-ID: <b2a8e1b0-1546-47ab-91b1-c2c256d68fc6@bytedance.com>
Date: Mon, 20 Jan 2025 23:58:42 +0800
From: Chuyi Zhou <zhouchuyi@...edance.com>
To: mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
 vincent.guittot@...aro.org, dietmar.eggemann@....com, rostedt@...dmis.org,
 bsegall@...gle.com, mgorman@...e.de, vschneid@...hat.com,
 longman@...hat.com, riel@...riel.com
Cc: chengming.zhou@...ux.dev, kprateek.nayak@....com,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/3] Take the scheduling domain into account in numa
 balancin

friendly ping....

在 2025/1/13 15:30, Chuyi Zhou 写道:
> This patchset tries to fix the logic of handling isolate cpus in numa balancing.
> 
> patch#1: Clean up for task_numa_migrate().
> 
> patch#2: Introduce numa_balance_mask which will be used in
> task_numa_migrate() as a temporary cpumask.
> 
> patch#3: Consider src_rq->rd->span to avoid gathering CPU's load not in the
> current scheduling domain in update_numa_state(), and ensure that an
> isolated CPU is not selected as best_cpu.
> 
> v3 ->v2: https://lore.kernel.org/lkml/20250103065930.413464-1-zhouchuyi@bytedance.com/#r
>   - Use rq->rd->span in task_numa_migrate. (Peter)
>   - Introduce per cpu mask as a temporary variable in task_numa_migrate.
> 
> v1 -> v2:
>   - Collect Prateek's reviewed-by and add the history of
>     task_numa_migrate() to commit log.
> 
> Chuyi Zhou (3):
>    sched/fair: Remove unused task_numa_migrate return value
>    sched/fair: Introduce per cpu numa_balance_mask
>    sched/fair: Take sched_domain into account in task_numa_migrate
> 
>   kernel/sched/fair.c | 58 ++++++++++++++++++++++++++++++++-------------
>   1 file changed, 41 insertions(+), 17 deletions(-)
>