linux-kernel - RE: [RFC PATCH v2 0/7] libperf: Add interface for overflow check of sampling events

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Date:   Mon, 11 Apr 2022 08:23:54 +0000
From:   "nakamura.shun@...itsu.com" <nakamura.shun@...itsu.com>
To:     'Jiri Olsa' <olsajiri@...il.com>
CC:     "peterz@...radead.org" <peterz@...radead.org>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "acme@...nel.org" <acme@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "alexander.shishkin@...ux.intel.com" 
        <alexander.shishkin@...ux.intel.com>,
        "jolsa@...hat.com" <jolsa@...hat.com>,
        "namhyung@...nel.org" <namhyung@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-perf-users@...r.kernel.org" <linux-perf-users@...r.kernel.org>
Subject: RE: [RFC PATCH v2 0/7] libperf: Add interface for overflow check of
 sampling events

Hi jirka

Sorry for the late reply.

> >
> > Shunsuke Nakamura (7):
> >   libperf tests: Fix typo in the error message
> >   libperf: Move 'open_flags' from tools/perf to evsel::open_flags
> >   libperf: Add perf_evsel__{refresh, period}() functions
> >   libperf: Introduce perf_{evsel, evlist}__open_opt with extensible
> >     struct opts
> >   libperf: Add perf_evsel__check_overflow() functions
> >   libperf test: Add test_stat_overflow()
> >   libperf test: Add test_stat_overflow_event()
> 
> I'm getting:
> 
> [root@...va perf]# make tests
> running static:
> - running tests/test-cpumap.c...OK
> - running tests/test-threadmap.c...OK
> - running tests/test-evlist.c...OK
> - running tests/test-evsel.c...FAILED tests/test-evsel.c:286 failed to overflow
> count FAILED tests/test-evsel.c:286 failed to overflow count
>   FAILED (2)
> FAILED tests/main.c:13 test evsel
> make: *** [Makefile:162: tests] Error 255
> 
Thanks for telling me.
However, we could not reproduce the test failure in our environment.
Could you please tell me the results of your test with the addition of V=1?


Best Regards
Shunsuke