6.13-stable review patch. If anyone has any objections, please let me know.
------------------
From: Namhyung Kim <namhyung@xxxxxxxxxx>
[ Upstream commit 72d81e10628be6a948463259cbb6d3b670b20054 ]
The perf trace enum augmentation test specifically targets landlock_
add_rule syscall but IIUC it's an optional and can be opt-out by a
kernel config.
Currently trace_landlock() runs `perf test -w landlock` before the
actual testing to check the availability but it's not enough since the
workload always returns 0. Instead it could check if perf trace output
has 'landlock' string.
Fixes: d66763fed30f0bd8c ("perf test trace_btf_enum: Add regression test for the BTF augmentation of enums in 'perf trace'")
Reviewed-by: Howard Chu <howardchu95@xxxxxxxxx>
Link: https://lore.kernel.org/r/20250128170629.1251574-1-namhyung@xxxxxxxxxx
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
tools/perf/tests/shell/trace_btf_enum.sh | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/tools/perf/tests/shell/trace_btf_enum.sh b/tools/perf/tests/shell/trace_btf_enum.sh
index 5a3b8a5a9b5cf..8d1e6bbeac906 100755
--- a/tools/perf/tests/shell/trace_btf_enum.sh
+++ b/tools/perf/tests/shell/trace_btf_enum.sh
@@ -26,8 +26,12 @@ check_vmlinux() {
trace_landlock() {
echo "Tracing syscall ${syscall}"
- # test flight just to see if landlock_add_rule and libbpf are available
- $TESTPROG
+ # test flight just to see if landlock_add_rule is available
+ if ! perf trace $TESTPROG 2>&1 | grep -q landlock
+ then
+ echo "No landlock system call found, skipping to non-syscall tracing."
+ return
+ fi
if perf trace -e $syscall $TESTPROG 2>&1 | \
grep -q -E ".*landlock_add_rule\(ruleset_fd: 11, rule_type: (LANDLOCK_RULE_PATH_BENEATH|LANDLOCK_RULE_NET_PORT), rule_attr: 0x[a-f0-9]+, flags: 45\) = -1.*"
--
2.39.5
