linux-kernel - RE: [PATCH 1/3] perf bench futex: benchmark only online CPUs

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] [day] [month] [year] [list]

Message-ID: <HE1PR0801MB2060AC6A41E45809931D1F9784260@HE1PR0801MB2060.eurprd08.prod.outlook.com>
Date:   Fri, 24 Nov 2017 21:30:23 +0000
From:   James Yang <James.Yang@....com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Davidlohr Bueso <dave@...olabs.net>
CC:     Kim Phillips <Kim.Phillips@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        "Namhyung Kim" <namhyung@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Darren Hart <dvhart@...radead.org>,
        Colin Ian King <colin.king@...onical.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 1/3] perf bench futex: benchmark only online CPUs

> -----Original Message-----
> From: Arnaldo Carvalho de Melo [mailto:acme@...nel.org]
> Sent: Friday, November 24, 2017 1:09 PM
> To: Davidlohr Bueso <dave@...olabs.net>
> Cc: James Yang <James.Yang@....com>; Kim Phillips <Kim.Phillips@....com>;
> Peter Zijlstra <peterz@...radead.org>; Ingo Molnar <mingo@...hat.com>;
> Alexander Shishkin <alexander.shishkin@...ux.intel.com>; Jiri Olsa
> <jolsa@...hat.com>; Namhyung Kim <namhyung@...nel.org>; Thomas Gleixner
> <tglx@...utronix.de>; Darren Hart <dvhart@...radead.org>; Colin Ian King
> <colin.king@...onical.com>; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH 1/3] perf bench futex: benchmark only online CPUs
>
> I try not to ask too much from people, i.e. their work already improves
> the current situation, for their use case, so could be applied, but
> yeah, it would be better, if James (or somebody else) is willing to try
> and use the perf cpumap infrastructure to reduce the bloat and actually
> validate even more it, James?
>
> - Arnaldo

Sorry for the delayed response.  We are on holiday.

These patches were written over a year ago.  I did not send it to lkml.

I did not continue development because I remember seeing an equivalent fix in another patch or a newer kernel than the one against which I wrote the patch.

I am busy with other things at this time, so if Kim (or someone else) wants to rewrite the patch to use cpumap, he should do it because I don't have the time to do it.
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.