From mboxrd@z Thu Jan 1 00:00:00 1970 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 90CBDF3381B for ; Tue, 17 Mar 2026 09:25:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F29CD10E30D; Tue, 17 Mar 2026 09:25:39 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="OiBIQ0xi"; dkim-atps=neutral Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id D79FF10E30D for ; Tue, 17 Mar 2026 09:25:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1773739538; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=4PPXdMPn0kCtQcC88lrFgotNdls7u7d7we65eaKeE9E=; b=OiBIQ0xiWTrdbH9ovonKUZF1qAnEGthpUAmv+RcIJO1uumRevz8lsbW8ZLQDfyHgrVtZ2S 37AkfSvCXRHM6qf+g0L6/owwNOsbRUhSfMptDdKPQJUyo/TQ8jRkmPF2Scr72D5lGKg9Um EUB9f3NZLJXQ2tF46hdAlWBo1g5/RYo= Received: from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-442-GlVJTbV7Msyg99JQlEir9A-1; Tue, 17 Mar 2026 05:25:32 -0400 X-MC-Unique: GlVJTbV7Msyg99JQlEir9A-1 X-Mimecast-MFC-AGG-ID: GlVJTbV7Msyg99JQlEir9A_1773739529 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 3B05B19560A6; Tue, 17 Mar 2026 09:25:29 +0000 (UTC) Received: from [192.168.1.153] (unknown [10.45.224.69]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id CFCEE180035F; Tue, 17 Mar 2026 09:25:20 +0000 (UTC) From: Albert Esteve Date: Tue, 17 Mar 2026 10:24:44 +0100 Subject: [PATCH v6 4/5] drm: Suppress intentional warning backtraces in scaling unit tests MIME-Version: 1.0 Message-Id: <20260317-kunit_add_support-v6-4-dd22aeb3fe5d@redhat.com> References: <20260317-kunit_add_support-v6-0-dd22aeb3fe5d@redhat.com> In-Reply-To: <20260317-kunit_add_support-v6-0-dd22aeb3fe5d@redhat.com> To: Arnd Bergmann , Brendan Higgins , David Gow , Rae Moar , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jonathan Corbet , Shuah Khan Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com, dri-devel@lists.freedesktop.org, workflows@vger.kernel.org, linux-doc@vger.kernel.org, Guenter Roeck , Linux Kernel Functional Testing , Dan Carpenter , =?utf-8?q?Ma=C3=ADra_Canal?= , Alessandro Carminati , Albert Esteve , Simona Vetter X-Developer-Signature: v=1; a=ed25519-sha256; t=1773739485; l=2672; i=aesteve@redhat.com; s=20260303; h=from:subject:message-id; bh=dgDPFwMzbwS7QQINim4WCBJEzudRgecx9bfpAoePY5M=; b=g94GzHpUTfjq+uP/n18WL3tY/0EmOZxMsmYqe2yh21ZXogKhGzdD7JUVOOcQsOQ4wJ8xZEjK8 uLc6BWvIL7gCWP9g0XqyuIm5TcTKkUMDArAaKE5AIPf4vgFzwaK/nQj X-Developer-Key: i=aesteve@redhat.com; a=ed25519; pk=YSFz6sOHd2L45+Fr8DIvHTi6lSIjhLZ5T+rkxspJt1s= X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 X-Mimecast-MFC-PROC-ID: AKsFvx_ZcjNHWP25tsEMAxMmNzubnfgCZ84NN_ge0Do_1773739529 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Guenter Roeck The drm_test_rect_calc_hscale and drm_test_rect_calc_vscale unit tests intentionally trigger warning backtraces by providing bad parameters to the tested functions. What is tested is the return value, not the existence of a warning backtrace. Suppress the backtraces to avoid clogging the kernel log and distraction from real problems. Tested-by: Linux Kernel Functional Testing Acked-by: Dan Carpenter Acked-by: Maíra Canal Cc: Maarten Lankhorst Cc: David Airlie Cc: Daniel Vetter Signed-off-by: Guenter Roeck Signed-off-by: Alessandro Carminati Signed-off-by: Albert Esteve --- drivers/gpu/drm/tests/drm_rect_test.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/gpu/drm/tests/drm_rect_test.c b/drivers/gpu/drm/tests/drm_rect_test.c index 17e1f34b76101..867845e7d5ab6 100644 --- a/drivers/gpu/drm/tests/drm_rect_test.c +++ b/drivers/gpu/drm/tests/drm_rect_test.c @@ -406,22 +406,38 @@ KUNIT_ARRAY_PARAM(drm_rect_scale, drm_rect_scale_cases, drm_rect_scale_case_desc static void drm_test_rect_calc_hscale(struct kunit *test) { + KUNIT_DEFINE_SUPPRESSED_WARNING(drm_calc_scale); const struct drm_rect_scale_case *params = test->param_value; int scaling_factor; + /* + * drm_rect_calc_hscale() generates a warning backtrace whenever bad + * parameters are passed to it. This affects all unit tests with an + * error code in expected_scaling_factor. + */ + KUNIT_START_SUPPRESSED_WARNING(drm_calc_scale); scaling_factor = drm_rect_calc_hscale(¶ms->src, ¶ms->dst, params->min_range, params->max_range); + KUNIT_END_SUPPRESSED_WARNING(drm_calc_scale); KUNIT_EXPECT_EQ(test, scaling_factor, params->expected_scaling_factor); } static void drm_test_rect_calc_vscale(struct kunit *test) { + KUNIT_DEFINE_SUPPRESSED_WARNING(drm_calc_scale); const struct drm_rect_scale_case *params = test->param_value; int scaling_factor; + /* + * drm_rect_calc_vscale() generates a warning backtrace whenever bad + * parameters are passed to it. This affects all unit tests with an + * error code in expected_scaling_factor. + */ + KUNIT_START_SUPPRESSED_WARNING(drm_calc_scale); scaling_factor = drm_rect_calc_vscale(¶ms->src, ¶ms->dst, params->min_range, params->max_range); + KUNIT_END_SUPPRESSED_WARNING(drm_calc_scale); KUNIT_EXPECT_EQ(test, scaling_factor, params->expected_scaling_factor); } -- 2.52.0