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Date: Mon,  5 Feb 2024 20:31:59 -0800
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References: <20240206043159.2539981-1-irogers@google.com>
Subject: [PATCH v2 3/3] perf stat: Fix metric-only aggregation index
From: Ian Rogers <irogers@google.com>
To: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>, 
	Arnaldo Carvalho de Melo <acme@kernel.org>, Namhyung Kim <namhyung@kernel.org>, 
	Mark Rutland <mark.rutland@arm.com>, 
	Alexander Shishkin <alexander.shishkin@linux.intel.com>, Jiri Olsa <jolsa@kernel.org>, 
	Ian Rogers <irogers@google.com>, Adrian Hunter <adrian.hunter@intel.com>, 
	Kan Liang <kan.liang@linux.intel.com>, Kajol Jain <kjain@linux.ibm.com>, 
	John Garry <john.g.garry@oracle.com>, Kaige Ye <ye@kaige.org>, 
	K Prateek Nayak <kprateek.nayak@amd.com>, linux-perf-users@vger.kernel.org, 
	linux-kernel@vger.kernel.org
Cc: Stephane Eranian <eranian@google.com>
Content-Type: text/plain; charset="UTF-8"

Aggregation index was being computed using the evsel's cpumap which
may have a different (typically the same or fewer) entries.

Before:
```
$ perf stat --metric-only -A -M memory_bandwidth_total -a sleep 1

 Performance counter stats for 'system wide':

       MB/s  memory_bandwidth_total MB/s  memory_bandwidth_total MB/s  memory_bandwidth_total MB/s  memory_bandwidth_total MB/s  memory_bandwidth_total MB/s  memory_bandwidth_total
CPU0                            12.8                           0.0                          12.9                          12.7                           0.0                          12.6
CPU1

       1.007806367 seconds time elapsed
```

After:
```
$ perf stat --metric-only -A -M memory_bandwidth_total -a sleep 1

 Performance counter stats for 'system wide':

       MB/s  memory_bandwidth_total MB/s  memory_bandwidth_total MB/s  memory_bandwidth_total MB/s  memory_bandwidth_total MB/s  memory_bandwidth_total MB/s  memory_bandwidth_total
CPU0                            15.4                           0.0                          15.3                          15.0                           0.0                          14.9
CPU18                            0.0                           0.0                          13.5                           5.2                           0.0                          11.9

       1.007858736 seconds time elapsed
```

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/stat-display.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index 8c61f8627ebc..ce830c6afdf2 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -1126,11 +1126,16 @@ static void print_no_aggr_metric(struct perf_stat_config *config,
 			u64 ena, run, val;
 			double uval;
 			struct perf_stat_evsel *ps = counter->stats;
-			int aggr_idx = perf_cpu_map__idx(evsel__cpus(counter), cpu);
+			int aggr_idx = 0;
 
-			if (aggr_idx < 0)
+			if (!perf_cpu_map__has(evsel__cpus(counter), cpu))
 				continue;
 
+			cpu_aggr_map__for_each_idx(aggr_idx, config->aggr_map) {
+				if (config->aggr_map->map[aggr_idx].cpu.cpu == cpu.cpu)
+					break;
+			}
+
 			os->evsel = counter;
 			os->id = aggr_cpu_id__cpu(cpu, /*data=*/NULL);
 			if (first) {
-- 
2.43.0.594.gd9cf4e227d-goog