linux-kernel - Re: [PATCH 0/6] Fix issues with Python3 scripting

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Message-ID: <20190124132604.GB30768@kernel.org>
Date:   Thu, 24 Jan 2019 14:26:04 +0100
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Tony Jones <tonyj@...e.de>, linux-kernel@...r.kernel.org,
        Seeteena Thoufeek <s1seetee@...ux.vnet.ibm.com>,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>,
        Jiri Olsa <jolsa@...nel.org>, Jonathan Corbet <corbet@....net>,
        linux-perf-users@...r.kernel.org
Subject: Re: [PATCH 0/6] Fix issues with Python3 scripting

Em Thu, Jan 24, 2019 at 11:39:22AM +0100, Jiri Olsa escreveu:
> On Wed, Jan 23, 2019 at 04:52:23PM -0800, Tony Jones wrote:
> > Seeteena posted, earlier this week, some patches to add Python3 support
> > to scripts/python/*.py.  Unfortunately there were some issues with these
> > patches (such as: https://lkml.org/lkml/2019/1/17/351)
> > 
> > Since I already had a tested set of patches in openSUSE:Factory and 
> > SLE15-SP1 and was about to submit them, Seeteena and I that agreed I 
> > should post my patches not involving scripts/python/*.py and Seeteena 
> > will later resubmit the patches for scripts/python/*.py incorporating 
> > my review feedback under a joint signed-off-by.
> > 
> > It should be noted that the use of "from __future__ import print_function" 
> > (see: https://lkml.org/lkml/2019/1/16/641) and "except as" (see change to:
> > tests/attr.py) implies Python2 >= 2.6 as the necessary support has not 
> > been backported to prior versions.  I am not sure if it's worth detecting 
> > <2.6 at build time or whether it's sufficiently old as to be a non-issue?
> > 
> > The shebang changes were driven mostly by our build process as it scans
> > all files within an rpm and the shebangs would result in a rpm requires
> > on the python2 binary when BuildRequires was python3-devel. I think they 
> > make sense to apply upstream but understand totally if it's prefered we 
> > keep them local.
> > 
> > These changes have been tested with PYTHON=python2 (v2.7) and 
> > PYTHON=python3 (v3.6) on latest openSUSE Tumbleweed.  I did notice that 
> 
> please try latest code from Arnaldo, we just had fix in that area
> 
> > test #18 "'import perf' in python" is failing on my system without these 
> > changes. I'll look at it further but didn't want to hold up Seeteena's 
> > resubmit.
> > 
> > Tony Jones (6):
> >   perf script python: Add trace_context extension module to sys,modules
> >   perf script python: Use PyBytes for attr in trace-event-python
> >   perf script python: remove explicit shebang from setup.py
> >   perf script python: remove explicit shebang from tests/attr.c
> >   perf script python: remove explicit shebang from Python scripts
> >   perf script python: add Python3 support to tests/attr.py
> 
> Acked-by: Jiri Olsa <jolsa@...nel.org>

Thanks, tested and applied.

- Arnaldo