[PATCH 3/8] perf tests: Skip pipe test if noploop symbol is missing

Adrian Hunter
2023-11-23T07:59:49Z

perf pipe recording and injection test depends on finding symbol noploop in
perf, and fails if perf has been stripped and no debug object is available.
In that case, skip the test instead.

Example:

Before:

$ strip tools/perf/perf
$ tools/perf/perf buildid-cache -p `realpath tools/perf/perf`
$ tools/perf/perf test -v pipe
86: perf pipe recording and injection test :
--- start ---
test child forked, pid 47734
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.000 MB - ]
47741 47741 -1 |perf
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.000 MB - ]
cannot find noploop function in pipe #1
test child finished with -1
---- end ----
perf pipe recording and injection test: FAILED!

After:

$ tools/perf/perf test -v pipe
86: perf pipe recording and injection test :
--- start ---
test child forked, pid 48996
perf does not have symbol 'noploop'
perf is missing symbols - skipping test
test child finished with -2
---- end ----
perf pipe recording and injection test: Skip

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
tools/perf/tests/shell/pipe_test.sh | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/tools/perf/tests/shell/pipe_test.sh b/tools/perf/tests/shell/pipe_test.sh
index 8dd115dd35a7..a78d35d2cff0 100755
--- a/tools/perf/tests/shell/pipe_test.sh
+++ b/tools/perf/tests/shell/pipe_test.sh
@@ -2,10 +2,17 @@
# perf pipe recording and injection test
# SPDX-License-Identifier: GPL-2.0

+shelldir=$(dirname "$0")
+# shellcheck source=lib/perf_has_symbol.sh
+. "${shelldir}"/lib/perf_has_symbol.sh
+
+sym="noploop"
+
+skip_test_missing_symbol ${sym}
+
data=$(mktemp /tmp/perf.data.XXXXXX)
prog="perf test -w noploop"
task="perf"
-sym="noploop"

if ! perf record -e task-clock:u -o - ${prog} | perf report -i - --task | grep ${task}; then
echo "cannot find the test file in the perf report"
--
2.34.1