tetragon: Add more thread to TestExitLeader test

Adding extra threads to the exit-leader test prog.

Spawning 2 threads directly from leader and another 2
from the newly created threads.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>

contrib/tester-progs/exit-leader.c

@@ -5,13 +5,29 @@
 #include <stdlib.h>
 #include <sys/syscall.h>
 
+#define gettid() (int) syscall(SYS_gettid)
+
 static void *worker(void *ctx)
 {
-	int cnt = 3;
+	unsigned long cnt = (unsigned long) ctx;
+	pthread_t th;
+	int err;
+
+	fprintf(stderr, "worker %d:%d cnt %lu\n", getpid(), gettid(), cnt);
+
+	if (cnt == 2 || cnt == 4) {
+		err = pthread_create(&th, NULL, worker, (void *) (cnt + 1));
+		if (err) {
+			perror("pthread_create");
+			return NULL;
+		}
+	}
 
 	while (cnt--) {
 		sleep(1);
 	}
+
+	fprintf(stderr, "exit %d:%d\n", getpid(), gettid());
 	return NULL;
 }
 
@@ -20,10 +36,18 @@ int main(void)
 	pthread_t th;
 	int err;
 
-	err = pthread_create(&th, NULL, worker, NULL);
+	err = pthread_create(&th, NULL, worker, (void *) 2);
+	if (err) {
+		perror("pthread_create");
+		return -1;
+	}
+	err = pthread_create(&th, NULL, worker, (void *) 4);
 	if (err) {
 		perror("pthread_create");
 		return -1;
 	}
+
+	sleep(3);
+	fprintf(stderr, "exit %d:%d\n", getpid(), gettid());
 	syscall(SYS_exit, 0);
 }

pkg/sensors/exec/exit_test.go

@@ -99,8 +99,8 @@ func TestExitLeader(t *testing.T) {
 		fmt.Printf("exitTime %v\n", exitTime)
 		fmt.Printf("delta %v\n", delta)
 
-		if delta < 3*time.Second {
-			return fmt.Errorf("unexpected delta < 3 seconds")
+		if delta < 5*time.Second {
+			return fmt.Errorf("unexpected delta < 5 seconds")
 		}
 		return nil
 	}