linux-kernel - Re: [resend RFC 1/3] pid: introduce task_by

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Message-ID: <YfF9LdvBsC/lkdWL@slm.duckdns.org>
Date:   Wed, 26 Jan 2022 06:56:13 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Christian Brauner <brauner@...nel.org>
Cc:     Joel Fernandes <joel@...lfernandes.org>,
        Chris Hyser <chris.hyser@...cle.com>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org, Peter Collingbourne <pcc@...gle.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Mel Gorman <mgorman@...e.de>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Balbir Singh <sblbir@...zon.com>, Jens Axboe <axboe@...nel.dk>
Subject: Re: [resend RFC 1/3] pid: introduce task_by_pid()

On Mon, Jan 24, 2022 at 11:52:45AM +0100, Christian Brauner wrote:
> We have a lot of places that open code
> 
> if (who)
>         p = find_task_by_vpid(who);
> else
>         p = current;
> 
> Introduce a simpler helper which can be used instead.
> 
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: Jens Axboe <axboe@...nel.dk>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Juri Lelli <juri.lelli@...hat.com>
> Cc: Vincent Guittot <vincent.guittot@...aro.org>
> Cc: Steven Rostedt <rostedt@...dmis.org>
> Cc: Daniel Bristot de Oliveira <bristot@...hat.com>
> Cc: Tejun Heo <tj@...nel.org>
> Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Christian Brauner <brauner@...nel.org>

For cgroup part:

Acked-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun