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Subject[PATCH v2 2/2] perf test: Add basic stat and topdown group test
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Add a basic stat test.
Add two tests of grouping behavior for topdown events. Topdown events
are special as they must be grouped with the slots event first.

Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/tests/shell/stat.sh | 67 ++++++++++++++++++++++++++++++++++
1 file changed, 67 insertions(+)
create mode 100755 tools/perf/tests/shell/stat.sh

diff --git a/tools/perf/tests/shell/stat.sh b/tools/perf/tests/shell/stat.sh
new file mode 100755
index 000000000000..c7894764d4a6
--- /dev/null
+++ b/tools/perf/tests/shell/stat.sh
@@ -0,0 +1,67 @@
+#!/bin/sh
+# perf stat tests
+# SPDX-License-Identifier: GPL-2.0
+
+set -e
+
+err=0
+test_default_stat() {
+ echo "Basic stat command test"
+ if ! perf stat true 2>&1 | egrep -q "Performance counter stats for 'true':"
+ then
+ echo "Basic stat command test [Failed]"
+ err=1
+ return
+ fi
+ echo "Basic stat command test [Success]"
+}
+
+test_topdown_groups() {
+ # Topdown events must be grouped with the slots event first. Test that
+ # parse-events reorders this.
+ echo "Topdown event group test"
+ if ! perf stat -e '{slots,topdown-retiring}' true > /dev/null 2>&1
+ then
+ echo "Topdown event group test [Skipped event parsing failed]"
+ return
+ fi
+ if perf stat -e '{slots,topdown-retiring}' true 2>&1 | egrep -q "<not supported>"
+ then
+ echo "Topdown event group test [Failed events not supported]"
+ err=1
+ return
+ fi
+ if perf stat -e '{topdown-retiring,slots}' true 2>&1 | egrep -q "<not supported>"
+ then
+ echo "Topdown event group test [Failed slots not reordered first]"
+ err=1
+ return
+ fi
+ echo "Topdown event group test [Success]"
+}
+
+test_topdown_weak_groups() {
+ # Weak groups break if the perf_event_open of multiple grouped events
+ # fails. Breaking a topdown group causes the events to fail. Test a very large
+ # grouping to see that the topdown events aren't broken out.
+ echo "Topdown weak groups test"
+ ok_grouping="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring},branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references"
+ if ! perf stat --no-merge -e "$ok_grouping" true > /dev/null 2>&1
+ then
+ echo "Topdown weak groups test [Skipped event parsing failed]"
+ return
+ fi
+ group_needs_break="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring,branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references}:W"
+ if perf stat --no-merge -e "$group_needs_break" true 2>&1 | egrep -q "<not supported>"
+ then
+ echo "Topdown weak groups test [Failed events not supported]"
+ err=1
+ return
+ fi
+ echo "Topdown weak groups test [Success]"
+}
+
+test_default_stat
+test_topdown_groups
+test_topdown_weak_groups
+exit $err
--
2.36.0.512.ge40c2bad7a-goog
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