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perf test: Skip syscall enum test if no landlock syscall

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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: d66763fed3 ("perf test trace_btf_enum: Add regression test for the BTF augmentation of enums in 'perf trace'")
Reviewed-by: Howard Chu <howardchu95@gmail.com>
Link: https://lore.kernel.org/r/20250128170629.1251574-1-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Namhyung Kim 2025-01-28 09:06:29 -08:00
parent c7b87ce0dd
commit 72d81e1062
1 changed files with 6 additions and 2 deletions
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8
tools/perf/tests/shell/trace_btf_enum.sh
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@ -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.*"