selftests/user_events: Enable the event before write_fault test in ftrace self-test

The user_event has not be enabled in write_fault test in ftrace
self-test, Just enable it.

Link: https://lkml.kernel.org/r/[email protected]
Acked-by: Beau Belgrave <[email protected]>
Signed-off-by: sunliming <[email protected]>
Signed-off-by: Steven Rostedt (Google) <[email protected]>

diff --git a/tools/testing/selftests/user_events/ftrace_test.c b/tools/testing/selftests/user_events/ftrace_test.c
index eb6904d89f1454ad177e50408f4e1b24853fee21..88898749e5b7edebec955517cd91cb0723de9495 100644 (file)
--- a/tools/testing/selftests/user_events/ftrace_test.c
+++ b/tools/testing/selftests/user_events/ftrace_test.c
@@ -400,6 +400,10 @@ TEST_F(user, write_fault) {
        ASSERT_EQ(0, ioctl(self->data_fd, DIAG_IOCSREG, &reg));
        ASSERT_EQ(0, reg.write_index);
 
+       /* Enable event */
+       self->enable_fd = open(enable_file, O_RDWR);
+       ASSERT_NE(-1, write(self->enable_fd, "1", sizeof("1")))
+
        /* Write should work normally */
        ASSERT_NE(-1, writev(self->data_fd, (const struct iovec *)io, 2));