linux-kernel - Re: [PATCH v4 00/12] perf c2c: Support display for Arm64

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Message-ID: <20220603033657.GA41034@leoy-ThinkPad-X240s>
Date:   Fri, 3 Jun 2022 11:36:57 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Ian Rogers <irogers@...gle.com>
Cc:     Joe Mario <jmario@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>, Alyssa Ross <hi@...ssa.is>,
        Like Xu <likexu@...cent.com>, Kajol Jain <kjain@...ux.ibm.com>,
        Li Huafei <lihuafei1@...wei.com>,
        Adam Li <adam.li@...erecomputing.com>,
        German Gomez <german.gomez@....com>,
        James Clark <james.clark@....com>,
        Ali Saidi <alisaidi@...zon.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 00/12] perf c2c: Support display for Arm64

Hi Ian,

On Thu, Jun 02, 2022 at 09:59:29AM -0700, Ian Rogers wrote:

[...]

> This is great Leo! I've not been able to test the changes but I didn't
> have any coding comments (happy to give an Acked-by). Do you think we
> can add a test for this? The test can skip when c2c isn't supported.

It would be great if recieve your ACK tags :)

Yeah, agree that it's good thing to add test for perf c2c.  Just note,
after rough thinkіng, seems to me the right thing to do is to add a
testing shell script in the folder tests/shell and use a tiny
multi-threading program for accessing the share cache line from
different nodes (or rollback to different CPUs).

I would like to use a separate patch for adding the test case, this
would be easier for upstreaming current patch set.

Please let me know if this is fine for you or not.  Thanks for reviewing
and suggestions!

Leo