perf test: Add cputype testing to perf stat

Check a bogus PMU fails and that a known PMU succeeds. Limit to PMUs
known cpu, cpu_atom and armv8_pmuv3_0 ones.

Signed-off-by: Ian Rogers <[email protected]>
Tested-by: Kan Liang <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Ahmad Yasin <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Athira Rajeev <[email protected]>
Cc: Caleb Biggers <[email protected]>
Cc: Edward Baker <[email protected]>
Cc: Florian Fischer <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: James Clark <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: John Garry <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Kang Minchul <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Perry Taylor <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ravi Bangoria <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Samantha Alt <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Sumanth Korikkar <[email protected]>
Cc: Suzuki Poulouse <[email protected]>
Cc: Thomas Richter <[email protected]>
Cc: Tiezhu Yang <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Xing Zhengjun <[email protected]>
Cc: Yang Jihong <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

1 files changed, 44 insertions, 0 deletions

diff --git a/tools/perf/tests/shell/stat.sh b/tools/perf/tests/shell/stat.sh
index b154fbb15d54..3f1e67795490 100755
--- a/tools/perf/tests/shell/stat.sh
+++ b/tools/perf/tests/shell/stat.sh
@@ -103,10 +103,54 @@ test_topdown_weak_groups() {
   echo "Topdown weak groups test [Success]"
 }
 
+test_cputype() {
+  # Test --cputype argument.
+  echo "cputype test"
+
+  # Bogus PMU should fail.
+  if perf stat --cputype="123" -e instructions true > /dev/null 2>&1
+  then
+    echo "cputype test [Bogus PMU didn't fail]"
+    err=1
+    return
+  fi
+
+  # Find a known PMU for cputype.
+  pmu=""
+  for i in cpu cpu_atom armv8_pmuv3_0
+  do
+    if test -d "/sys/devices/$i"
+    then
+      pmu="$i"
+      break
+    fi
+    if perf stat -e "$i/instructions/" true > /dev/null 2>&1
+    then
+      pmu="$i"
+      break
+    fi
+  done
+  if test "x$pmu" = "x"
+  then
+    echo "cputype test [Skipped known PMU not found]"
+    return
+  fi
+
+  # Test running with cputype produces output.
+  if ! perf stat --cputype="$pmu" -e instructions true 2>&1 | grep -E -q "instructions"
+  then
+    echo "cputype test [Failed count missed with given filter]"
+    err=1
+    return
+  fi
+  echo "cputype test [Success]"
+}
+
 test_default_stat
 test_stat_record_report
 test_stat_record_script
 test_stat_repeat_weak_groups
 test_topdown_groups
 test_topdown_weak_groups
+test_cputype
 exit $err