[LTP] [PATCH] keyctl02: make use of .max_runtime

[Li Wang]

With setting 30 secs for max_runtime. At the same time exit the
main LOOP when tst_remaining_time is exhausted.

This fix improves timeout on slower systems:

  # time ./keyctl02
  tst_test.c:1554: TINFO: Timeout per run is 0h 00m 30s
  ...
  keyctl02.c:85: TINFO: debug only: i == 7723
  keyctl02.c:85: TINFO: debug only: i == 7724
  Test timeouted, sending SIGKILL!
  tst_test.c:1607: TINFO: If you are running on slow machine, try exporting LTP_TIMEOUT_MUL > 1
  tst_test.c:1608: TBROK: Test killed! (timeout?)

  Summary:
  passed   0
  failed   0
  broken   1
  skipped  0
  warnings 0

  real	0m30.046s
  user	0m0.245s
  sys	0m9.937s

Signed-off-by: Li Wang <liwang@redhat.com>
---
 testcases/kernel/syscalls/keyctl/keyctl02.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/testcases/kernel/syscalls/keyctl/keyctl02.c b/testcases/kernel/syscalls/keyctl/keyctl02.c
index f4ee03f33..467943fec 100644
--- a/testcases/kernel/syscalls/keyctl/keyctl02.c
+++ b/testcases/kernel/syscalls/keyctl/keyctl02.c
@@ -81,6 +81,11 @@ static void do_test(void)
 		SAFE_PTHREAD_JOIN(pth[1], NULL);
 		SAFE_PTHREAD_JOIN(pth[2], NULL);
 		SAFE_PTHREAD_JOIN(pth[3], NULL);
+
+		if (!tst_remaining_runtime()) {
+			tst_res(TINFO, "Runtime exhausted, exiting at %i looping times", i);
+			break;
+		}
 	}
 
 	/*
@@ -135,6 +140,7 @@ static struct tst_test test = {
 	.needs_root = 1,
 	.setup = setup,
 	.cleanup = cleanup,
+	.max_runtime = 60,
 	.test_all = do_test,
 	.tags = (const struct tst_tag[]) {
 		{"linux-git", "b4a1b4f5047e"},
-- 
2.35.3