linux-kernel - Re: [PATCH v2 1/2] sched/topology: Skip updating masks for non-online nodes

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 for Android: free password hash cracker in your pocket

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

Message-ID: <87mtph6is5.mognet@arm.com>
Date:   Tue, 17 Aug 2021 01:01:46 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        LKML <linux-kernel@...r.kernel.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Rik van Riel <riel@...riel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        linuxppc-dev@...ts.ozlabs.org,
        Nathan Lynch <nathanl@...ux.ibm.com>,
        Gautham R Shenoy <ego@...ux.vnet.ibm.com>,
        Geetika Moolchandani <Geetika.Moolchandani1@....com>,
        Laurent Dufour <ldufour@...ux.ibm.com>
Subject: Re: [PATCH v2 1/2] sched/topology: Skip updating masks for non-online nodes

On 16/08/21 16:03, Srikar Dronamraju wrote:
>>
>> Your version is much much better than mine.
>> And I have verified that it works as expected.
>>
>>
>
> Hey Peter/Valentin
>
> Are we waiting for any more feedback/testing for this?
>

I'm not overly fond of that last one, but AFAICT the only alternative is
doing a full-fledged NUMA topology rebuild on new-node onlining (i.e. make
calling sched_init_numa() more than once work). It's a lot more work for a
very particular usecase.

>
> --
> Thanks and Regards
> Srikar Dronamraju