linux-kernel - Re: [PATCH 14/19] sched/numa: Updation of scan period need not be in lock

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Message-ID: <1528136679.7898.117.camel@surriel.com>
Date:   Mon, 04 Jun 2018 14:24:39 -0400
From:   Rik van Riel <riel@...riel.com>
To:     Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 14/19] sched/numa: Updation of scan period need not be
 in lock

On Mon, 2018-06-04 at 15:30 +0530, Srikar Dronamraju wrote:
> The metrics for updating scan periods are local or task specific.
> Currently this updation happens under numa_group lock which seems
> unnecessary. Hence move this updation outside the lock.

Indeed, it looks like update_task_scan_period does
not look at any numa_group numbers (any more?).

> Signed-off-by: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>

Reviewed-by: Rik van Riel <riel@...riel.com>

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