linux-kernel - Re: [PATCH V2 22/23] perf tools: Allow system-wide events to keep their own 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: <CAM9d7cjJups443_V8062cFWn3XNxGCnjM1FeWU9_AHnJnibjVg@mail.gmail.com>
Date:   Tue, 17 May 2022 16:31:29 -0700
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        Jiri Olsa <jolsa@...hat.com>, Ian Rogers <irogers@...gle.com>,
        Alexey Bayduraev <alexey.v.bayduraev@...ux.intel.com>,
        Leo Yan <leo.yan@...aro.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Stephane Eranian <eranian@...gle.com>,
        Kan Liang <kan.liang@...ux.intel.com>
Subject: Re: [PATCH V2 22/23] perf tools: Allow system-wide events to keep
 their own CPUs

On Sat, May 14, 2022 at 6:35 AM Arnaldo Carvalho de Melo
<acme@...nel.org> wrote:
>
> Em Fri, May 13, 2022 at 07:48:40AM +0300, Adrian Hunter escreveu:
> > On 12/05/22 21:53, Namhyung Kim wrote:
> > > I'm not sure if it's intended.  I expect it runs on
> > > cpu 0 or one of the given cpus.  Or it runs on both
> > > cpus and returns value in half so that the sum is
> > > the same as the original value (from a cpu).
> >
> > I don't know if there is anything wrong with the way
> > we are handling uncore PMUs, except that I don't know
> > if it is documented anywhere.
>
> Good thing about this conversation is that it will result in
> documentation :-)
>
> Thank you guys for having it and detailing it so nicely.

To move things forward,

Acked-by: Namhyung Kim <namhyung@...nel.org>

for the patchset.  I'll try to cleanup the cpu map propagation
with hybrid events later.

Thanks,
Namhyung