perf test: Allow skip for all metrics test

Some Intel TMA metrics compute a ratio that may divide by 0, which
causes the metric not to print. This happens for metrics with FP_ARITH
events. If we see these events in the result and would otherwise fail,
then switch to a skip.

Also, don't early exit when processing metrics.

Reviewed-by: John Garry <[email protected]>
Reviewed-by: Kan Liang <[email protected]>
Signed-off-by: Ian Rogers <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Alexandre Torgue <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: James Clark <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Maxime Coquelin <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Zhengjun Xing <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

1 files changed, 8 insertions, 2 deletions

diff --git a/tools/perf/tests/shell/stat_all_metrics.sh b/tools/perf/tests/shell/stat_all_metrics.sh
index 7f4ba3cad632..e7c59e5a7a98 100755
--- a/tools/perf/tests/shell/stat_all_metrics.sh
+++ b/tools/perf/tests/shell/stat_all_metrics.sh
@@ -4,6 +4,7 @@
 
 set -e
 
+err=0
 for m in $(perf list --raw-dump metrics); do
   echo "Testing $m"
   result=$(perf stat -M "$m" true 2>&1)
@@ -14,9 +15,14 @@ for m in $(perf list --raw-dump metrics); do
     if [[ ! "$result" =~ "$m" ]]; then
       echo "Metric '$m' not printed in:"
       echo "$result"
-      exit 1
+      if [[ "$result" =~ "FP_ARITH" && "$err" != "1" ]]; then
+        echo "Skip, not fail, for FP issues"
+        err=2
+      else
+        err=1
+      fi
     fi
   fi
 done
 
-exit 0
+exit "$err"