From nobody Sat Oct 11 12:06:59 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4984C28AB03 for ; Tue, 10 Jun 2025 09:33:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749548036; cv=none; b=dcWMeMBxy940QKd8B/qicpyzZD7miji/Ep578bgrS4dAnHClEQLrzpnOYEqzPEAfuVViWQULlSDDpVnPJhxxBcbkipO+evt2zbUdOFMIJ/hsdAogOS0eqF5cWpf3vmsNaa38mikzS2e35dW/9dmXoxf7wTDCfkS267W7vbJS03Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749548036; c=relaxed/simple; bh=f82rGVWrjBouF2BTswBLqRANHumddvbr8a+wkNyzR4k=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=cVngTV3LizqCLt2gmdZDexoOV7NWwIx4I3ebteNCpUcgr6N1r9P1s6gx5t8dN14AfJmyY3ODzCEMYY4H+RE5H4ZExbH734vK3l3nNUxxpQhqIABgrRJaC5YfsY2XH9PNVX9v3AWptm13rOCv0HccfXRS8PmDS2bjDGpH8dy0HoI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eU2iLa13; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="eU2iLa13" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C5097C4CEED; Tue, 10 Jun 2025 09:33:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1749548034; bh=f82rGVWrjBouF2BTswBLqRANHumddvbr8a+wkNyzR4k=; h=From:To:Cc:Subject:Date:From; b=eU2iLa13FDxPa1xFykinwvwxfaaK0xrlfoF5ZFZZtDWwD5aAJ80Sf+DgZKIuF4X6O QoEcXA55nhnY9jk4zQqe/eHGWCpbwp/CMjB0r1RyzBgbuJOITJIwaP5CPrZbnpNqEw Thm55C8JLKvQJP/iDKEZ7G7uxyKKCXG15Zf4Hv4BDSGp3ZZ2ifi8VopUXSiSqma1Cm 9UwsYghqz5vZGkAbI72NNK8xU2mT9rj+NOWoInx02fxL5MWJILGBw7+ykKGrf7eMa6 vRA2+VWBESdd3Pjf5iozQPdDa+rfcMaFuOsTALp8+9HDQ2uhFkM09ib/zzPqDAMCvy I8pKgAPP/o+Dw== From: Arnd Bergmann To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Alex Deucher , =?UTF-8?q?Christian=20K=C3=B6nig?= Cc: Arnd Bergmann , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH] drm/test: reduce stack size in drm_exec_test Date: Tue, 10 Jun 2025 11:33:46 +0200 Message-Id: <20250610093350.2645965-1-arnd@kernel.org> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Arnd Bergmann test_prepare_array() is one of the functions that uses more than a kilobyte of stack on 64-bit machines, though it stays under the usual warning limit of 2KB: drivers/gpu/drm/tests/drm_exec_test.c: In function 'test_prepare_array': drivers/gpu/drm/tests/drm_exec_test.c:171:1: error: the frame size of 1304 = bytes is larger than 1280 bytes [-Werror=3Dframe-larger-than=3D] In order to eventually lower that limit, change the two large drm_gem_object objects to be statically allocated. This works here because the tests are always called sequentially, and it is simpler than using kzalloc(). Fixes: 9710631cc8f3 ("drm: add drm_exec selftests v4") Signed-off-by: Arnd Bergmann Acked-by: Christian K=C3=B6nig --- drivers/gpu/drm/tests/drm_exec_test.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/tests/drm_exec_test.c b/drivers/gpu/drm/tests/= drm_exec_test.c index d6c4dd1194a0..f2ac06a07707 100644 --- a/drivers/gpu/drm/tests/drm_exec_test.c +++ b/drivers/gpu/drm/tests/drm_exec_test.c @@ -18,6 +18,8 @@ =20 #include "../lib/drm_random.h" =20 +static struct drm_gem_object gobj, gobj2; + struct drm_exec_priv { struct device *dev; struct drm_device *drm; @@ -54,7 +56,6 @@ static void sanitycheck(struct kunit *test) static void test_lock(struct kunit *test) { struct drm_exec_priv *priv =3D test->priv; - struct drm_gem_object gobj =3D { }; struct drm_exec exec; int ret; =20 @@ -74,7 +75,6 @@ static void test_lock(struct kunit *test) static void test_lock_unlock(struct kunit *test) { struct drm_exec_priv *priv =3D test->priv; - struct drm_gem_object gobj =3D { }; struct drm_exec exec; int ret; =20 @@ -101,7 +101,6 @@ static void test_lock_unlock(struct kunit *test) static void test_duplicates(struct kunit *test) { struct drm_exec_priv *priv =3D test->priv; - struct drm_gem_object gobj =3D { }; struct drm_exec exec; int ret; =20 @@ -128,7 +127,6 @@ static void test_duplicates(struct kunit *test) static void test_prepare(struct kunit *test) { struct drm_exec_priv *priv =3D test->priv; - struct drm_gem_object gobj =3D { }; struct drm_exec exec; int ret; =20 @@ -150,13 +148,11 @@ static void test_prepare(struct kunit *test) static void test_prepare_array(struct kunit *test) { struct drm_exec_priv *priv =3D test->priv; - struct drm_gem_object gobj1 =3D { }; - struct drm_gem_object gobj2 =3D { }; - struct drm_gem_object *array[] =3D { &gobj1, &gobj2 }; + struct drm_gem_object *array[] =3D { &gobj, &gobj2 }; struct drm_exec exec; int ret; =20 - drm_gem_private_object_init(priv->drm, &gobj1, PAGE_SIZE); + drm_gem_private_object_init(priv->drm, &gobj, PAGE_SIZE); drm_gem_private_object_init(priv->drm, &gobj2, PAGE_SIZE); =20 drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0); @@ -166,7 +162,7 @@ static void test_prepare_array(struct kunit *test) KUNIT_EXPECT_EQ(test, ret, 0); drm_exec_fini(&exec); =20 - drm_gem_private_object_fini(&gobj1); + drm_gem_private_object_fini(&gobj); drm_gem_private_object_fini(&gobj2); } =20 --=20 2.39.5