[PATCH v1] perf pmu: Correct auto_merge_stats test

From: Ian Rogers
Date: Mon Jun 26 2023 - 01:31:11 EST


The original logic was:
https://lore.kernel.org/all/20230527072210.2900565-35-irogers@xxxxxxxxxx/
return !is_pmu_hybrid(pmu->name)

is_pmu_hybrid was removed but with the incorrect condition which was
fixed for core PMUs but not uncore. This change fixes both.

Fixes: e23421426e13 ("perf pmu: Correct perf_pmu__auto_merge_stats() affecting hybrid")
Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
tools/perf/util/pmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 64fa568a5426..8d5ecd4ff1a9 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -1427,7 +1427,7 @@ bool perf_pmu__supports_legacy_cache(const struct perf_pmu *pmu)

bool perf_pmu__auto_merge_stats(const struct perf_pmu *pmu)
{
- return pmu->is_core && perf_pmus__num_core_pmus() == 1;
+ return !pmu->is_core || perf_pmus__num_core_pmus() == 1;
}

bool perf_pmu__have_event(const struct perf_pmu *pmu, const char *name)
--
2.41.0.162.gfafddb0af9-goog