linux-kernel - Re: [PATCH] sched/debug: Remove mpol_get/put and task_lock/unlock from sched_show

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Message-ID: <YeaiOKUS32zcwXBC@hirez.programming.kicks-ass.net>
Date:   Tue, 18 Jan 2022 12:19:20 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Bharata B Rao <bharata@....com>
Cc:     linux-kernel@...r.kernel.org, mingo@...hat.com,
        juri.lelli@...hat.com, vincent.guittot@...aro.org,
        dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
        mgorman@...e.de, bristot@...hat.com, srikar@...ux.vnet.ibm.com,
        riel@...riel.com
Subject: Re: [PATCH] sched/debug: Remove mpol_get/put and task_lock/unlock
 from sched_show_numa

On Tue, Jan 18, 2022 at 10:35:15AM +0530, Bharata B Rao wrote:
> The older format of /proc/pid/sched printed home node info which
> required the mempolicy and task lock around mpol_get(). However
> the format has changed since then and there is no need for
> sched_show_numa() any more to have mempolicy argument,
> asssociated mpol_get/put and task_lock/unlock. Remove them.
> 
> Fixes: 397f2378f1361 ("sched/numa: Fix numa balancing stats in /proc/pid/sched")
> Signed-off-by: Bharata B Rao <bharata@....com>

Thanks!