linux-kernel - Re: [RFC PATCH V3 5/6] sched/fair: Add trivial fair server

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <c8a48cd8-b3bf-743c-55c5-f942fbe08792@kernel.org>
Date:   Fri, 16 Jun 2023 15:00:57 +0200
From:   Daniel Bristot de Oliveira <bristot@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Ingo Molnar <mingo@...hat.com>, Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Valentin Schneider <vschneid@...hat.com>,
        linux-kernel@...r.kernel.org,
        Luca Abeni <luca.abeni@...tannapisa.it>,
        Tommaso Cucinotta <tommaso.cucinotta@...tannapisa.it>,
        Thomas Gleixner <tglx@...utronix.de>,
        Joel Fernandes <joel@...lfernandes.org>,
        Vineeth Pillai <vineeth@...byteword.org>,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [RFC PATCH V3 5/6] sched/fair: Add trivial fair server

On 6/16/23 14:59, Peter Zijlstra wrote:
> On Thu, Jun 08, 2023 at 05:58:17PM +0200, Daniel Bristot de Oliveira wrote:
>> +void fair_server_init(struct rq *rq)
>> +{
>> +	struct sched_dl_entity *dl_se = &rq->fair_server;
>> +
>> +	init_dl_entity(dl_se);
>> +
>> +	dl_se->dl_runtime = TICK_NSEC;
>> +	dl_se->dl_deadline = 20 * TICK_NSEC;
>> +	dl_se->dl_period = 20 * TICK_NSEC;
>> +
>> +	dl_server_init(dl_se, rq, fair_server_has_tasks, fair_server_pick);
>> +}
> 
> These here numbers should obviously become a tunable somewhere... :-)

>From sched_rt_runtime and sched_rt_period, no?

-- Daniel