perf jevents: Support for has_event function

Support for the new has_event function in metrics.

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Namhyung Kim <namhyung@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Eduard Zingerman <eddyz87@gmail.com>
Cc: Sohom Datta <sohomdatta1@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jing Zhang <renyu.zj@linux.alibaba.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Ingo Molnar <mingo@redhat.com>
Link: https://lore.kernel.org/r/20230623151016.4193660-3-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/tools/perf/pmu-events/metric.py b/tools/perf/pmu-events/metric.py
index af58b74d1644..85a3545f5b6a 100644
--- a/tools/perf/pmu-events/metric.py
+++ b/tools/perf/pmu-events/metric.py
@@ -408,6 +408,12 @@ def source_count(event: Event) -> Function:
   return Function('source_count', event)
 
 
+def has_event(event: Event) -> Function:
+  # pylint: disable=redefined-builtin
+  # pylint: disable=invalid-name
+  return Function('has_event', event)
+
+
 class Metric:
   """An individual metric that will specifiable on the perf command line."""
   groups: Set[str]
@@ -539,7 +545,7 @@ def ParsePerfJson(orig: str) -> Expression:
               r'Event(r"\1")', py)
   py = re.sub(r'#Event\(r"([^"]*)"\)', r'Literal("#\1")', py)
   py = re.sub(r'([0-9]+)Event\(r"(e[0-9]+)"\)', r'\1\2', py)
-  keywords = ['if', 'else', 'min', 'max', 'd_ratio', 'source_count']
+  keywords = ['if', 'else', 'min', 'max', 'd_ratio', 'source_count', 'has_event']
   for kw in keywords:
     py = re.sub(rf'Event\(r"{kw}"\)', kw, py)