[PATCH 2/3] perf test: fix sys_enter_openat event test for musl

[Martin Kaiser]

The "syscalls:sys_enter_openat event fields" test calls

openat(AT_FDCWD, "/etc/passwd", O_RDONLY | O_DIRECTORY)

and verifies that the flags of the captured event are matching.
This fails for musl, where the openat syscall wrapper always adds
O_LARGEFILE.

Update the check to allow for additional flags. Fail the test only if one
of our flags is missing.

Signed-off-by: Martin Kaiser <martin@xxxxxxxxx>
---
 tools/perf/tests/openat-syscall-tp-fields.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/tests/openat-syscall-tp-fields.c b/tools/perf/tests/openat-syscall-tp-fields.c
index 2a139d2781a8..366b3bf39def 100644
--- a/tools/perf/tests/openat-syscall-tp-fields.c
+++ b/tools/perf/tests/openat-syscall-tp-fields.c
@@ -120,7 +120,8 @@ static int test__syscall_openat_tp_fields(struct test_suite *test __maybe_unused
 
 				tp_flags = evsel__intval(evsel, &sample, "flags");
 				perf_sample__exit(&sample);
-				if (flags != tp_flags) {
+				/* C library wrapper may set additional flags */
+				if ((tp_flags & flags) != flags) {
 					pr_debug("%s: Expected flags=%#x, got %#x\n",
 						 __func__, flags, tp_flags);
 					goto out_delete_evlist;
-- 
2.43.7