linux-kernel - [PATCH v4 06/12] perf jevents: Term list fix in event parsing

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Message-Id: <20240926173554.404411-7-irogers@google.com>
Date: Thu, 26 Sep 2024 10:35:48 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, John Garry <john.g.garry@...cle.com>, 
	Jing Zhang <renyu.zj@...ux.alibaba.com>, Sandipan Das <sandipan.das@....com>, 
	Benjamin Gray <bgray@...ux.ibm.com>, Xu Yang <xu.yang_2@....com>, linux-kernel@...r.kernel.org, 
	linux-perf-users@...r.kernel.org
Subject: [PATCH v4 06/12] perf jevents: Term list fix in event parsing

Fix events seemingly broken apart at a comma.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/pmu-events/metric.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/perf/pmu-events/metric.py b/tools/perf/pmu-events/metric.py
index 31eea2f45152..0f4e67e5cfea 100644
--- a/tools/perf/pmu-events/metric.py
+++ b/tools/perf/pmu-events/metric.py
@@ -568,6 +568,12 @@ def ParsePerfJson(orig: str) -> Expression:
               r'Event(r"\1")', py)
   # If it started with a # it should have been a literal, rather than an event name
   py = re.sub(r'#Event\(r"([^"]*)"\)', r'Literal("#\1")', py)
+  # Fix events wrongly broken at a ','
+  while True:
+    prev_py = py
+    py = re.sub(r'Event\(r"([^"]*)"\),Event\(r"([^"]*)"\)', r'Event(r"\1,\2")', py)
+    if py == prev_py:
+      break
   # Convert accidentally converted hex constants ("0Event(r"xDEADBEEF)"") back to a constant,
   # but keep it wrapped in Event(), otherwise Python drops the 0x prefix and it gets interpreted as
   # a double by the Bison parser
@@ -586,7 +592,6 @@ def ParsePerfJson(orig: str) -> Expression:
   parsed = ast.fix_missing_locations(parsed)
   return _Constify(eval(compile(parsed, orig, 'eval')))
 
-
 def RewriteMetricsInTermsOfOthers(metrics: List[Tuple[str, str, Expression]]
                                   )-> Dict[Tuple[str, str], Expression]:
   """Shorten metrics by rewriting in terms of others.
-- 
2.46.1.824.gd892dcdcdd-goog