linux-kernel - Re: [linux-next:master] [perf vendor events] e2641db83f: perf-sanity-tests.perf_all_PMU

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Message-ID: <98c73f1a-e5e3-4eba-ac52-ccf21e3a063c@linux.intel.com>
Date: Thu, 11 Jul 2024 09:07:02 -0400
From: "Liang, Kan" <kan.liang@...ux.intel.com>
To: Oliver Sang <oliver.sang@...el.com>
Cc: Ian Rogers <irogers@...gle.com>, oe-lkp@...ts.linux.dev, lkp@...el.com,
 Linux Memory Management List <linux-mm@...ck.org>,
 Namhyung Kim <namhyung@...nel.org>, Weilin Wang <weilin.wang@...el.com>,
 Caleb Biggers <caleb.biggers@...el.com>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Maxime Coquelin <mcoquelin.stm32@...il.com>,
 linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [linux-next:master] [perf vendor events] e2641db83f:
 perf-sanity-tests.perf_all_PMU_test.fail



On 2024-07-11 4:04 a.m., Oliver Sang wrote:
> hi, Kan,
> 
> On Wed, Jul 10, 2024 at 09:15:05AM -0400, Liang, Kan wrote:
>>
>>
>> On 2024-07-10 12:59 a.m., kernel test robot wrote:
>>>
>>>
>>> Hello,
>>>
>>> kernel test robot noticed "perf-sanity-tests.perf_all_PMU_test.fail" on:
>>>
>>> commit: e2641db83f18782f57a0e107c50d2d1731960fb8 ("perf vendor events: Add/update skylake events/metrics")
>>> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
>>>
>>> [test failed on linux-next/master 82d01fe6ee52086035b201cfa1410a3b04384257]
>>>
>>> in testcase: perf-sanity-tests
>>> version: 
>>> with following parameters:
>>>
>>> 	perf_compiler: gcc
>>>
>>>
>>>
>>> compiler: gcc-13
>>> test machine: 16 threads 1 sockets Intel(R) Xeon(R) E-2278G CPU @ 3.40GHz (Coffee Lake) with 32G memory
>>>
>>> (please refer to attached dmesg/kmsg for entire log/backtrace)
>>>
>>>
>>> we also observed two cases which also failed on parent can pass on this commit.
>>> FYI.
>>>
>>>
>>> caccae3ce7b988b6 e2641db83f18782f57a0e107c50
>>> ---------------- ---------------------------
>>>        fail:runs  %reproduction    fail:runs
>>>            |             |             |
>>>            :6          100%           6:6     perf-sanity-tests.perf_all_PMU_test.fail
>>>            :6          100%           6:6     perf-sanity-tests.perf_all_metricgroups_test.pass
>>>            :6          100%           6:6     perf-sanity-tests.perf_all_metrics_test.pass
>>>
>>>
>>>
>>>
>>>
>>> If you fix the issue in a separate patch/commit (i.e. not just a new version of
>>> the same patch/commit), kindly add following tags
>>> | Reported-by: kernel test robot <oliver.sang@...el.com>
>>> | Closes: https://lore.kernel.org/oe-lkp/202407101021.2c8baddb-oliver.sang@intel.com
>>>
>>>
>>>
>>> 2024-07-09 07:09:53 sudo /usr/src/linux-perf-x86_64-rhel-8.3-bpf-e2641db83f18782f57a0e107c50d2d1731960fb8/tools/perf/perf test 105
>>> 105: perf all metricgroups test                                      : Ok
>>> 2024-07-09 07:10:11 sudo /usr/src/linux-perf-x86_64-rhel-8.3-bpf-e2641db83f18782f57a0e107c50d2d1731960fb8/tools/perf/perf test 106
>>> 106: perf all metrics test                                           : Ok
>>> 2024-07-09 07:10:23 sudo /usr/src/linux-perf-x86_64-rhel-8.3-bpf-e2641db83f18782f57a0e107c50d2d1731960fb8/tools/perf/perf test 107
>>> 107: perf all libpfm4 events test                                    : Ok
>>> 2024-07-09 07:10:47 sudo /usr/src/linux-perf-x86_64-rhel-8.3-bpf-e2641db83f18782f57a0e107c50d2d1731960fb8/tools/perf/perf test 108
>>> 108: perf all PMU test                                               : FAILED!
>>
>> Can you please try the -vvv option, which should tell the failed event?
>> perf test -vvv "perf all PMU test"
> 
> after add -vvv:
> 
> 2024-07-11 07:45:20 sudo /usr/src/linux-perf-x86_64-rhel-8.3-bpf-e2641db83f18782f57a0e107c50d2d1731960fb8/tools/perf/perf test -v 108
> 108: perf all PMU test:
> --- start ---
> test child forked, pid 18989
> Testing (null)

The test cases use the "perf list --raw-dump pmu" to get a complete
event list. It seems the perf list command got nothing. That's weird.

The main change of e2641db83f18 is to add the "Counter" field and a few
events. It should not impact the perf list command.

What's the output of "perf list --raw-dump pmu" on your machine?

Thanks,
Kan
> ---- end(-1) ----
> 108: perf all PMU test                                               : FAILED!
> 
> 
>>
>> Thanks,
>> Kan
>>>
>>>
>>>
>>> The kernel config and materials to reproduce are available at:
>>> https://download.01.org/0day-ci/archive/20240710/202407101021.2c8baddb-oliver.sang@intel.com
>>>
>>>
>>>
>>
>