perf jevents: Provide path to JSON file on error

If a JSONDecoderError or similar is raised then it is useful to know the
path. Print this and then raise the exception agan.

Signed-off-by: Ian Rogers <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: James Clark <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: John Garry <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Mike Leach <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ravi Bangoria <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Xing Zhengjun <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

1 files changed, 6 insertions, 1 deletions

diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py
index 8e8462cb359b..31936eafa9ff 100755
--- a/tools/perf/pmu-events/jevents.py
+++ b/tools/perf/pmu-events/jevents.py
@@ -225,7 +225,12 @@ class JsonEvent:
 
 def read_json_events(path: str) -> Sequence[JsonEvent]:
   """Read json events from the specified file."""
-  return json.load(open(path), object_hook=lambda d: JsonEvent(d))
+
+  try:
+    return json.load(open(path), object_hook=lambda d: JsonEvent(d))
+  except BaseException as err:
+    print(f"Exception processing {path}")
+    raise
 
 
 def preprocess_arch_std_files(archpath: str) -> None: