linux-kernel - Re: [PATCH v2 00/11] perf events patches for improved ARM64 support

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Date:   Fri, 2 Mar 2018 22:05:21 +0530
From:   Ganapatrao Kulkarni <gklkml16@...il.com>
To:     William Cohen <wcohen@...hat.com>
Cc:     John Garry <john.garry@...wei.com>,
        Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>,
        ak@...ux.intel.com, Peter Zijlstra <peterz@...radead.org>,
        Will Deacon <will.deacon@....com>,
        Linuxarm <linuxarm@...wei.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        linux-kernel@...r.kernel.org,
        Zhangshaokun <zhangshaokun@...ilicon.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>, namhyung@...nel.org,
        Jiri Olsa <jolsa@...hat.com>,
        linux-arm-kernel@...ts.infradead.org, Jayachandran.Nair@...ium.com
Subject: Re: [PATCH v2 00/11] perf events patches for improved ARM64 support

Hi John,

On Fri, Mar 2, 2018 at 9:35 PM, William Cohen <wcohen@...hat.com> wrote:
> On 03/02/2018 03:24 AM, John Garry wrote:
>> On 27/02/2018 09:50, Jiri Olsa wrote:
>>> On Sat, Feb 24, 2018 at 12:05:21AM +0800, John Garry wrote:
>>>> This patchset adds support for some perf events features,
>>>> targeted at ARM64, implemented in a generic fashion.
>>>>
>>>> The two main features are as follows:
>>>> - support for arch/vendor/platform pmu events directory structure
>>>>    - to support this, topic subdirectory support needs to be dropped
>>>> - support for parsing standard architecture pmu events
>>>>
>>>> On the back of these, the Cavium ThunderX2, ARM Cortex-A53,
>>>> and HiSilicon hip08 JSONs are relocated/added/updated.
>>>>
>>>> In addition, there is a patch to drop mutli-mapfile.csv support and
>>>> also a bugfix in jevents.c for an error code value.
>>>>
>>>> Differences to v1:
>>>> - Address coding issues from Jiri Olsa in adding arch std event
>>>>    support (https://lkml.org/lkml/2018/2/6/501)
>>>> - add patch to drop topic subdirectory support
>>>> - add patch for bug fix in json_events()
>>>> - add review tags from Jiri Olsa
>>>
>>> can't tell if those json file changes are ok, but for all the code changes:
>>>
>>
>> Hi William, Ganapatrao,
>>
>> Can you check the modifications to the ARM64 JSONs you originally submitted in the patchset please?>
>> If they are not checked, I'll have to see if the maintainers will accept without your review. If not, I'll have to drop them.

I am seeing issue(log below) with this patchset on our platfrom.
i have tried using your v2 branch [1]

root@...g-1>perf_acme>> ./perf --version
perf version 4.16.rc1.g087f7ca
root@...g-1>perf_acme>> ./perf stat -e bus_access_rd sleep 1

 Performance counter stats for 'sleep 1':

            23,099      bus_access_rd

       1.000708516 seconds time elapsed

root@...g-1>perf_acme>> cd -
/ganapat/perf/linux-hisi/tools/perf
root@...g-1>perf>> ./perf --version
perf version 4.16.rc1.gcb5a74
root@...g-1>perf>> ./perf stat -e bus_access_rd sleep 1

 Performance counter stats for 'sleep 1':

                 0      bus_access_rd

       1.000709162 seconds time elapsed

root@...g-1>perf>>

[1] https://github.com/hisilicon/linux-hisi.git

>
> Hi John,
>
> I will take a look at the patches this weekend and give feedback beginning of next week. -Will
>
>>
>> Thanks,
>> John
>>
>>> Acked-by: Jiri Olsa <jolsa@...nel.org>
>>>
>>> thanks,
>>> jirka
>>>
>>> .

thanks
Ganapat
>>>
>>
>>
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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