linux-kernel - Re: perf: python3 + tests attr.py failing

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Date:   Mon, 4 Feb 2019 21:37:38 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Tony Jones <tonyj@...e.de>,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>,
        Seeteena Thoufeek <s1seetee@...ux.vnet.ibm.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: perf: python3 + tests attr.py failing

On Mon, Feb 04, 2019 at 12:10:42PM -0300, Arnaldo Carvalho de Melo wrote:
> Noticed this now when building with PYTHON=python3, can you take a look?
> For now I'm reinstalling python2-devel and building with it, i.e.
> removing that PYTHON=python3 make command line variable.
> 
> [root@...co ~]# perf test -v perf_event_attr
> 16: Setup struct perf_event_attr                          :
> --- start ---
> test child forked, pid 23937
>   File "/home/acme/libexec/perf-core/tests/attr.py", line 325
>     except Unsup, obj:
>                 ^
> SyntaxError: invalid syntax
> test child finished with -1
> ---- end ----
> Setup struct perf_event_attr: FAILED!

hum, I built the same way like you 'make PYTHON=python3'
[root@...va perf]# ldd ./perf | grep python
        libpython3.6m.so.1.0 => /lib64/libpython3.6m.so.1.0 (0x00007f4ca7cc4000)

and get 'Ok result'

[root@...va perf]# ./perf test attr
16: Setup struct perf_event_attr                          : Ok
48: Synthesize attr update                                : Ok


[root@...va perf]# python3 --version
Python 3.6.8
[root@...va perf]# rpm -qa | grep python3-devel
python3-devel-3.6.8-1.fc28.x86_64

which Fedora are you on 29? I'm on 28

jirka

> [root@...co ~]# find
> 
> Reverting back to building with python2-devel makes it work:
> 
> make O=/tmp/build/perf -C tools/perf install-bin
> 
> [acme@...co perf]$ ldd ~/bin/perf | grep python
> 	libpython2.7.so.1.0 => /lib64/libpython2.7.so.1.0 (0x00007fe283792000)
> [acme@...co perf]$
> 
> [root@...co ~]# perf test perf_event_attr
> 16: Setup struct perf_event_attr                          : Ok
> [root@...co ~]#
> 
> - Arnaldo