linux-kernel - Re: [PATCH 2/6] tools/perf/json: Add cache metrics for s390 z16

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Message-ID: <ZBwkl77/I31AQk12@osiris>
Date:   Thu, 23 Mar 2023 11:06:15 +0100
From:   Heiko Carstens <hca@...ux.ibm.com>
To:     Thomas Richter <tmricht@...ux.ibm.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Ian Rogers <irogers@...gle.com>,
        Sumanth Korikkar <sumanthk@...ux.ibm.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        svens@...ux.ibm.com, gor@...ux.ibm.com
Subject: Re: [PATCH 2/6] tools/perf/json: Add cache metrics for s390 z16

On Thu, Mar 23, 2023 at 10:51:16AM +0100, Thomas Richter wrote:
> On 3/22/23 21:59, Arnaldo Carvalho de Melo wrote:
> > While trying to cross build to s390 on:
> > 
> > ubuntu:18.04
> > 
> > using python3
> >  
> > 
> >    CC      /tmp/build/perf/tests/parse-events.o
> > Exception processing pmu-events/arch/s390/cf_z16/extended.json
> > Traceback (most recent call last):
> >   File "pmu-events/jevents.py", line 997, in <module>
> >     main()
> >   File "pmu-events/jevents.py", line 979, in main
> >     ftw(arch_path, [], preprocess_one_file)
> >   File "pmu-events/jevents.py", line 935, in ftw
> >     ftw(item.path, parents + [item.name], action)
> >   File "pmu-events/jevents.py", line 933, in ftw
> >     action(parents, item)
> >   File "pmu-events/jevents.py", line 514, in preprocess_one_file
> >     for event in read_json_events(item.path, topic):
> >   File "pmu-events/jevents.py", line 388, in read_json_events
> >     events = json.load(open(path), object_hook=JsonEvent)
> >   File "/usr/lib/python3.6/json/__init__.py", line 296, in load
> >     return loads(fp.read(),
> >   File "/usr/lib/python3.6/encodings/ascii.py", line 26, in decode
> >     return codecs.ascii_decode(input, self.errors)[0]
> > UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 4271: ordinal not in range(128)
> > 
> >
> 
> Hmmm, this is very strange. After reading this mail I installed Ubuntu 18.04
> on my s390 system. The build works fine, no errors at all.
> 
> 
> # pmu-events/jevents.py s390 all pmu-events/arch pmu-events/pmu-events.c
> # ll pmu-events/pmu-events.c
> -rw-r--r-- 1 root root 317284 Mar 23 10:46 pmu-events/pmu-events.c
> #
> 
> The file has the correct contents and the build works fine too.
> # make 

The file contains UTF-8 characters, which were already present before
your patch. Guess you need to provide an addon patch which converts to
plain ASCII.