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perf ilist: Be tolerant of reading a metric on the wrong CPU

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This happens on hybrid machine metrics. Be tolerant and don't cause
the ilist application to crash with an exception.

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Thomas Falcon <thomas.falcon@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Ian Rogers
2025-12-02 09:49:57 -08:00
committed by Namhyung Kim
parent 6603c3c1fe
commit 4b11c983f4
1 changed files with 6 additions and 2 deletions
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8
tools/perf/python/ilist.py
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@@ -77,8 +77,12 @@ class Metric(TreeValue):
return perf.parse_metrics(self.metric_name, self.metric_pmu)
def value(self, evlist: perf.evlist, evsel: perf.evsel, cpu: int, thread: int) -> float:
val = evlist.compute_metric(self.metric_name, cpu, thread)
return 0 if math.isnan(val) else val
try:
val = evlist.compute_metric(self.metric_name, cpu, thread)
return 0 if math.isnan(val) else val
except:
# Be tolerant of failures to compute metrics on particular CPUs/threads.
return 0
@dataclass