From nobody Tue Feb 10 03:00:05 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29144EB64DA for ; Fri, 23 Jun 2023 01:33:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230203AbjFWBdr (ORCPT ); Thu, 22 Jun 2023 21:33:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36590 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230010AbjFWBdj (ORCPT ); Thu, 22 Jun 2023 21:33:39 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C9DCF210A for ; Thu, 22 Jun 2023 18:33:38 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 599CF61941 for ; Fri, 23 Jun 2023 01:33:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BE3FFC433CD; Fri, 23 Jun 2023 01:33:37 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.96) (envelope-from ) id 1qCVg8-002M8H-1q; Thu, 22 Jun 2023 21:33:36 -0400 Message-ID: <20230623013336.387000756@goodmis.org> User-Agent: quilt/0.66 Date: Thu, 22 Jun 2023 21:31:55 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Andrew Morton , sunliming , Beau Belgrave Subject: [for-linus][PATCH 3/3] selftests/user_events: Add test cases when event is disabled References: <20230623013152.037225511@goodmis.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: sunliming When user_events are disabled, its write operation should return zero. Add this test cases. Link: https://lkml.kernel.org/r/20230621063502.154378-1-sunliming@kylinos.cn Signed-off-by: sunliming Acked-by: Beau Belgrave Signed-off-by: Steven Rostedt (Google) --- tools/testing/selftests/user_events/ftrace_test.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/testing/selftests/user_events/ftrace_test.c b/tools/test= ing/selftests/user_events/ftrace_test.c index 88898749e5b7..f42a20520175 100644 --- a/tools/testing/selftests/user_events/ftrace_test.c +++ b/tools/testing/selftests/user_events/ftrace_test.c @@ -324,6 +324,9 @@ TEST_F(user, write_events) { io[0].iov_base =3D ®.write_index; io[0].iov_len =3D sizeof(reg.write_index); =20 + /* Write should return zero when event is not enabled */ + ASSERT_EQ(0, writev(self->data_fd, (const struct iovec *)io, 3)); + /* Enable event */ self->enable_fd =3D open(enable_file, O_RDWR); ASSERT_NE(-1, write(self->enable_fd, "1", sizeof("1"))) --=20 2.39.2