linux-kernel - RE: [PATCH] tools/power/x86/intel_pstate

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Message-ID: <002201d9e9e2$0ea11a20$2be34e60$@telus.net>
Date:   Sun, 17 Sep 2023 20:41:49 -0700
From:   "Doug Smythies" <dsmythies@...us.net>
To:     "'Mario Limonciello'" <mario.limonciello@....com>
Cc:     <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        "'Swapnil Sapkal'" <swapnil.sapkal@....com>, <Ray.Huang@....com>,
        "'Srinivas Pandruvada'" <srinivas.pandruvada@...ux.intel.com>,
        <rafael.j.wysocki@...el.com>, "Doug Smythies" <dsmythies@...us.net>
Subject: RE: [PATCH] tools/power/x86/intel_pstate_tracer: python minimum version

On 2023.09.17 17:57 Mario wrote:
> On 9/17/2023 16:29, Doug Smythies wrote:
>> From: Doug Smythies <dsmythies@...us.net>
>> 
>> Change the minimum python version from 2.7 to 3.6.
>> Remove a 2.X backwards compatibility line.
>> 
>> Signed-off-by: Doug Smythies <dsmythies@...us.net>
>> ---
>>   .../x86/intel_pstate_tracer/intel_pstate_tracer.py     | 10 +++++-----
>>   1 file changed, 5 insertions(+), 5 deletions(-)
>> 
>> diff --git a/tools/power/x86/intel_pstate_tracer/intel_pstate_tracer.py b/tools/power/x86/intel_pstate_tracer/intel_pstate_tracer.py
>> index ec3323100e1a..6b0790e6465a 100755
>> --- a/tools/power/x86/intel_pstate_tracer/intel_pstate_tracer.py
>> +++ b/tools/power/x86/intel_pstate_tracer/intel_pstate_tracer.py
>> @@ -1,4 +1,4 @@
>> -#!/usr/bin/env python
>> +#!/usr/bin/env python3
>>   # SPDX-License-Identifier: GPL-2.0-only
>>   # -*- coding: utf-8 -*-
>>   #
>> @@ -11,9 +11,9 @@ then this utility enables and collects trace data for a user specified interval
>>   and generates performance plots.
>> 
>>   Prerequisites:
>> -    Python version 2.7.x or higher
>> +    Python version 3.6.x or higher
>>       gnuplot 5.0 or higher
>> -    gnuplot-py 1.8 or higher
>> +    phython3-gnuplot 1.8 or higher
>
> Presumably you mean 'python3-gnuplot'.

Oh Darn. Yes. I'll send a V2.

>>       (Most of the distributions have these required packages. They may be called
>>        gnuplot-py, phython-gnuplot or phython3-gnuplot, gnuplot-nox, ... )
>> 
>
> Likewise here too.
>
>> @@ -23,7 +23,7 @@ Prerequisites:
>>       see print_help(): for Usage and Output details
>> 
>>   """
>> -from __future__ import print_function
>> +
>>   from datetime import datetime
>>   import subprocess
>>   import os
>> @@ -562,7 +562,7 @@ if __name__ == "__main__":
>> 
>>       # Temporary (or perhaps not)
>>       cur_version = sys.version_info
>> -    print('python version (should be >= 2.7):')
>> +    print('python version (should be >= 3.6):')
>>       print(cur_version)
>
> Is this block printing the version really needed at all?
> I don't see 'cur_version' used anywhere else in the file.

Well, it is there to make it easy to know what the
requirements are and what the actual version is.
The minimum version is not enforced.

>>       # Left as "cleanup" for potential future re-run ability.
>> --
>> 2.25.1