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perf expr: Fix "has_event" function for metric style events
[ Upstream commit 6dd76680b925228312756c13b9b983661b552a64 ] Events in metrics cannot use '/' as a separator, it would be recognized as a divide, so they use '@'. The '@' is recognized in the metricgroups code and changed to '/', do the same in the has_event function so that the parsing is only tried without the @s. Fixes: 4a4a9bf ("perf expr: Add has_event function") Signed-off-by: Ian Rogers <irogers@google.com> Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: James Clark <james.clark@arm.com> Cc: Kaige Ye <ye@kaige.org> Cc: John Garry <john.g.garry@oracle.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20240209204947.3873294-3-irogers@google.com Signed-off-by: Sasha Levin <sashal@kernel.org>
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