linux-kernel - perf tools power9 JSON files build breakage on ubuntu 18.04 cross build

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Date:   Thu, 23 Mar 2023 10:11:11 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Cc:     linuxppc-dev@...ts.ozlabs.org,
        Adrian Hunter <adrian.hunter@...el.com>,
        Ian Rogers <irogers@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: perf tools power9 JSON files build breakage on ubuntu 18.04 cross
 build

Exception processing pmu-events/arch/powerpc/power9/other.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 0xc2 in position 55090: ordinal not in range(128)
  CC      /tmp/build/perf/tests/expr.o
pmu-events/Build:35: recipe for target '/tmp/build/perf/pmu-events/pmu-events.c' failed
make[3]: *** [/tmp/build/perf/pmu-events/pmu-events.c] Error 1
make[3]: *** Deleting file '/tmp/build/perf/pmu-events/pmu-events.c'
Makefile.perf:679: recipe for target '/tmp/build/perf/pmu-events/pmu-events-in.o' failed
make[2]: *** [/tmp/build/perf/pmu-events/pmu-events-in.o] Error 2
make[2]: *** Waiting for unfinished jobs....


Now jevents is an opt-out feature so I'm noticing these problems.

A similar fix for s390 was accepted today:


https://lore.kernel.org/r/20230323122532.2305847-1-tmricht@linux.ibm.com
https://lore.kernel.org/r/ZBwkl77/I31AQk12@osiris
-- 

- Arnaldo