From patchwork Thu Dec 22 08:36:41 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 9484531 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3815D601D3 for ; Thu, 22 Dec 2016 08:43:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 32CDB27E5A for ; Thu, 22 Dec 2016 08:43:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 272C628285; Thu, 22 Dec 2016 08:43:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D725B27E5A for ; Thu, 22 Dec 2016 08:43:19 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B152C6F1B3; Thu, 22 Dec 2016 08:43:16 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-wm0-x242.google.com (mail-wm0-x242.google.com [IPv6:2a00:1450:400c:c09::242]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4303A6F175; Thu, 22 Dec 2016 08:37:27 +0000 (UTC) Received: by mail-wm0-x242.google.com with SMTP id u144so34760929wmu.0; Thu, 22 Dec 2016 00:37:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=+/5n60ryi7Idyz/J8ytGv5Q9lx6RXV45/D/+7vefjX4=; b=srScorus4frijVGhJweQANSbjAC94f41805vVancSDlFyHfofkvqgX2rWG38kBvYPi mKYj2ib8+aLBVgRVPdcoDLcfoBeroHkoMhM6JTd1omvW4Oo9BSF4tWNpF0GXIxhD+sT8 BhQRDj6Ozmw5UJiTE3iJ9nnXVgzzDGy8Z1CQuIzii59KzYbB6bX7sFIjGF7+KkN9xilI /t2H4SABPu+3aYg9HA6OUJCerglJFJyA7UUWlltFd5jdjTIRi7vnpjiSWSMol0JdjvJm 5fufc325w45d9b3dBpo4Gw3nk/G/+7NkZe2tkfhe9XEUUDH1EWyYBA0u5ZEnP2dSJhxt AmaA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=+/5n60ryi7Idyz/J8ytGv5Q9lx6RXV45/D/+7vefjX4=; b=BErqwqGb8Mef33NTPB79YVWVV4R8He9RSaum9FZRJn7YUmLFmQwj5EV4m1K3KMUHTK eTFWXmmyktCNO1A3+Ll0J5nJD5qhmCAbk9cumT+pFz0iQ+HR375BIsTd6jD7fwUQdN1o pJYu6mevXZ85PXri5LgPHhvIL3KdplNANHaSNDFuDO9skjlqysEu1kG3d/DQGdRVnQpJ iYCjhJdiaizxTZyfpr0VtrxRuAsQL1Dzd/U4HSllbHDnExd70aCwZQ3gNDe4slWOvlPl BzMipBL1Ftkf8LjwKrg/+yX4oQFxac0V6tzIvy4aksdySAingS2KisY29RmLX/Lv3ZUC KXZQ== X-Gm-Message-State: AIkVDXIuBxtrm7udXD4GV9zy55DldNXyad0IszDBwA9PZMEss1+P07S4sZj+mKCKxMuCzw== X-Received: by 10.28.63.150 with SMTP id m144mr10109112wma.96.1482395845037; Thu, 22 Dec 2016 00:37:25 -0800 (PST) Received: from haswell.alporthouse.com ([78.156.65.138]) by smtp.gmail.com with ESMTPSA id di9sm34442318wjc.37.2016.12.22.00.37.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 22 Dec 2016 00:37:24 -0800 (PST) From: Chris Wilson To: dri-devel@lists.freedesktop.org Subject: [PATCH v4 38/38] drm: kselftest for drm_mm and bottom-up allocation Date: Thu, 22 Dec 2016 08:36:41 +0000 Message-Id: <20161222083641.2691-39-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20161222083641.2691-1-chris@chris-wilson.co.uk> References: <20161222083641.2691-1-chris@chris-wilson.co.uk> Cc: intel-gfx@lists.freedesktop.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Check that if we request bottom-up allocation from drm_mm_insert_node() we receive the next available hole from the bottom. Signed-off-by: Chris Wilson Reviewed-by: Joonas Lahtinen --- drivers/gpu/drm/selftests/drm_mm_selftests.h | 1 + drivers/gpu/drm/selftests/test-drm_mm.c | 100 +++++++++++++++++++++++++++ 2 files changed, 101 insertions(+) diff --git a/drivers/gpu/drm/selftests/drm_mm_selftests.h b/drivers/gpu/drm/selftests/drm_mm_selftests.h index 6a4575fdc1c0..37bbdac52896 100644 --- a/drivers/gpu/drm/selftests/drm_mm_selftests.h +++ b/drivers/gpu/drm/selftests/drm_mm_selftests.h @@ -17,6 +17,7 @@ selftest(align32, igt_align32) selftest(align64, igt_align64) selftest(evict, igt_evict) selftest(evict_range, igt_evict_range) +selftest(bottomup, igt_bottomup) selftest(topdown, igt_topdown) selftest(color, igt_color) selftest(color_evict, igt_color_evict) diff --git a/drivers/gpu/drm/selftests/test-drm_mm.c b/drivers/gpu/drm/selftests/test-drm_mm.c index a07c04a6c4b9..acdf4f51b781 100644 --- a/drivers/gpu/drm/selftests/test-drm_mm.c +++ b/drivers/gpu/drm/selftests/test-drm_mm.c @@ -1687,6 +1687,106 @@ static int igt_topdown(void *ignored) return ret; } +static int igt_bottomup(void *ignored) +{ + const struct insert_mode *bottomup = &insert_modes[BOTTOMUP]; + DRM_RND_STATE(prng, random_seed); + const unsigned int count = 8192; + unsigned int size; + unsigned long *bitmap; + struct drm_mm mm; + struct drm_mm_node *nodes, *node, *next; + unsigned int *order, n, m, o = 0; + int ret; + + /* Like igt_topdown, but instead of searching for the last hole, + * we search for the first. + */ + + ret = -ENOMEM; + nodes = vzalloc(count * sizeof(*nodes)); + if (!nodes) + goto err; + + bitmap = kzalloc(count / BITS_PER_LONG * sizeof(unsigned long), + GFP_TEMPORARY); + if (!bitmap) + goto err_nodes; + + order = drm_random_order(count, &prng); + if (!order) + goto err_bitmap; + + ret = -EINVAL; + for (size = 1; size <= 64; size <<= 1) { + drm_mm_init(&mm, 0, size*count); + for (n = 0; n < count; n++) { + if (!expect_insert(&mm, &nodes[n], + size, 0, n, + bottomup)) { + pr_err("bottomup insert failed, size %u step %d\n", size, n); + goto out; + } + + if (!assert_one_hole(&mm, size*(n + 1), size*count)) + goto out; + } + + if (!assert_continuous(&mm, size)) + goto out; + + drm_random_reorder(order, count, &prng); + for_each_prime_number_from(n, 1, min(count, max_prime)) { + for (m = 0; m < n; m++) { + node = &nodes[order[(o + m) % count]]; + drm_mm_remove_node(node); + __set_bit(node_index(node), bitmap); + } + + for (m = 0; m < n; m++) { + unsigned int first; + + node = &nodes[order[(o + m) % count]]; + if (!expect_insert(&mm, node, + size, 0, 0, + bottomup)) { + pr_err("insert failed, step %d/%d\n", m, n); + goto out; + } + + first = find_first_bit(bitmap, count); + if (node_index(node) != first) { + pr_err("node %d/%d not inserted into bottom hole, expected %d, found %d\n", + m, n, first, node_index(node)); + goto out; + } + __clear_bit(first, bitmap); + } + + DRM_MM_BUG_ON(find_first_bit(bitmap, count) != count); + + o += n; + } + + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + DRM_MM_BUG_ON(!drm_mm_clean(&mm)); + } + + ret = 0; +out: + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + drm_mm_takedown(&mm); + kfree(order); +err_bitmap: + kfree(bitmap); +err_nodes: + vfree(nodes); +err: + return ret; +} + static void separate_adjacent_colors(const struct drm_mm_node *node, unsigned long color, u64 *start,