From patchwork Tue Oct 19 22:54:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Paneer Selvam, Arunpravin" X-Patchwork-Id: 12572353 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1D66EC433F5 for ; Wed, 20 Oct 2021 12:59:40 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id DCBCE6136F for ; Wed, 20 Oct 2021 12:59:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org DCBCE6136F Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=amd.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C73786E9C1; Wed, 20 Oct 2021 12:59:38 +0000 (UTC) Received: from NAM12-BN8-obe.outbound.protection.outlook.com (mail-bn8nam12on2048.outbound.protection.outlook.com [40.107.237.48]) by gabe.freedesktop.org (Postfix) with ESMTPS id 800236E10F; Tue, 19 Oct 2021 22:55:24 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=FpQPUUFAqZ9QX1W8d/W9FF3wxWQ0dNAyuOH1HmcJTZ67WQ3DxuIaTMy/qhYKLcocKj2LkVPifmKfKhAL7e+xat+C3shJGkcAZFGYvBSgMaJhWlLBNHi8hrt3QeMkCODndQZFLFom1uRjR6e2c+s6eO2OMjapQnsyerDWAiqOdgWiSKJDyKmzITy8/IsyXLZeMlZkOP/vhTFd2uWO44yMYOaR3FyRAVirOW7E7JoGj9aPty+5pTPfuk3VMeTZZ2wOcEgdmSIbDQQzZtFlH69xydqNTVlik+lD2cFdsGZk8/k2JnszcFf7T+/B1iG6jlbkXzuMIlOUfkfXAtyxnVr8GQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=MQBxOKpU7l/Tsjl3JpfxDHXDll0N3U7MesOsKmCfOSE=; b=PthQtVZtQY5gV6AqMWZz5QHOHRlK7wTlou2dqdgc0f3dXJO+pDffWwGMhAD/47nOU+mOzEJgOQMz9UEiGHRSi5tnlNjkLYo+JMeYT6rwed7ikDsl6UieuELsI88Vhe6FjK6BVkNXqgVamPAgmeVW8M7nDFbCuWoT7FOd3zWQg8m2AQpy7RQ6ibUiKgUQD43guhqo8hi2nLU8fItRGrf78gyht6LeL7zqWJ2bgPo6Dw+9uoFlP0ZpvQKgBS1fTr4s2HWcm7lsvFI6mYdkrK+UMUfBxVZ1kaS1vc1NF2j46bDVts+0O0qNMVpvwaKs8zYqHaJn7Eyu7n/jBxZLndZZbg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=lists.freedesktop.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=MQBxOKpU7l/Tsjl3JpfxDHXDll0N3U7MesOsKmCfOSE=; b=0zSN8DRbQaIrbM6hDY447bt3SxLiYe/qGS8mgqpWWeiisnd31fTREyOjOqdVJ6x8/Uhj43ZXXtGvpfY945nDZqUv9o+si1dYpinsIFR4Uc2XLW5ldadTIXyGe11JDAPpfSgPCwgk3UglhEQlydY0M19KDLhT36Xe0Rm2SCH90cg= Received: from MW3PR06CA0001.namprd06.prod.outlook.com (2603:10b6:303:2a::6) by BN6PR12MB1219.namprd12.prod.outlook.com (2603:10b6:404:1c::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4608.18; Tue, 19 Oct 2021 22:55:21 +0000 Received: from CO1NAM11FT035.eop-nam11.prod.protection.outlook.com (2603:10b6:303:2a:cafe::dc) by MW3PR06CA0001.outlook.office365.com (2603:10b6:303:2a::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4628.15 via Frontend Transport; Tue, 19 Oct 2021 22:55:21 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; lists.freedesktop.org; dkim=none (message not signed) header.d=none;lists.freedesktop.org; dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; Received: from SATLEXMB04.amd.com (165.204.84.17) by CO1NAM11FT035.mail.protection.outlook.com (10.13.175.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4608.15 via Frontend Transport; Tue, 19 Oct 2021 22:55:20 +0000 Received: from rtg-amd.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.15; Tue, 19 Oct 2021 17:55:18 -0500 From: Arunpravin To: , , CC: , , , , Arunpravin Date: Wed, 20 Oct 2021 04:24:03 +0530 Message-ID: <20211019225409.569355-8-Arunpravin.PaneerSelvam@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211019225409.569355-1-Arunpravin.PaneerSelvam@amd.com> References: <20211019225409.569355-1-Arunpravin.PaneerSelvam@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: cf5a7105-5c4e-44d8-cc4f-08d993538739 X-MS-TrafficTypeDiagnostic: BN6PR12MB1219: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:765; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(4636009)(36840700001)(46966006)(426003)(70586007)(86362001)(16526019)(81166007)(186003)(5660300002)(8676002)(4326008)(83380400001)(47076005)(356005)(36860700001)(336012)(316002)(2906002)(7696005)(110136005)(508600001)(8936002)(26005)(6666004)(82310400003)(36756003)(2616005)(70206006)(54906003)(1076003)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Oct 2021 22:55:20.8307 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cf5a7105-5c4e-44d8-cc4f-08d993538739 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT035.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR12MB1219 X-Mailman-Approved-At: Wed, 20 Oct 2021 12:59:17 +0000 Subject: [Intel-gfx] [PATCH 07/13] drm: Implement method to free unused pages X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On contiguous allocation, we round up the size to the nearest power of 2, implement a function to free unused pages. Signed-off-by: Arunpravin --- drivers/gpu/drm/drm_buddy.c | 87 +++++++++++++++++++++++++++++++++++++ include/drm/drm_buddy.h | 4 ++ 2 files changed, 91 insertions(+) diff --git a/drivers/gpu/drm/drm_buddy.c b/drivers/gpu/drm/drm_buddy.c index 42ce4f8f4e0e..3e3303dd6658 100644 --- a/drivers/gpu/drm/drm_buddy.c +++ b/drivers/gpu/drm/drm_buddy.c @@ -256,6 +256,93 @@ static inline bool contains(u64 s1, u64 e1, u64 s2, u64 e2) return s1 <= s2 && e1 >= e2; } +int drm_buddy_free_unused_pages(struct drm_buddy_mm *mm, + u64 actual_size, + struct list_head *blocks) +{ + struct drm_buddy_block *block; + struct drm_buddy_block *buddy; + u64 actual_start; + u64 actual_end; + LIST_HEAD(dfs); + u64 count = 0; + int err; + + if (!list_is_singular(blocks)) + return -EINVAL; + + block = list_first_entry_or_null(blocks, + struct drm_buddy_block, + link); + + if (!block) + return -EINVAL; + + if (actual_size > drm_buddy_block_size(mm, block)) + return -EINVAL; + + if (actual_size == drm_buddy_block_size(mm, block)) + return 0; + + list_del(&block->link); + + actual_start = drm_buddy_block_offset(block); + actual_end = actual_start + actual_size - 1; + + if (drm_buddy_block_is_allocated(block)) + mark_free(mm, block); + + list_add(&block->tmp_link, &dfs); + + while (1) { + block = list_first_entry_or_null(&dfs, + struct drm_buddy_block, + tmp_link); + + if (!block) + break; + + list_del(&block->tmp_link); + + if (count == actual_size) + return 0; + + if (contains(actual_start, actual_end, drm_buddy_block_offset(block), + (drm_buddy_block_offset(block) + drm_buddy_block_size(mm, block) - 1))) { + BUG_ON(!drm_buddy_block_is_free(block)); + /* Allocate only required blocks */ + mark_allocated(block); + mm->avail -= drm_buddy_block_size(mm, block); + list_add_tail(&block->link, blocks); + count += drm_buddy_block_size(mm, block); + continue; + } + + if (drm_buddy_block_order(block) == 0) + continue; + + if (!drm_buddy_block_is_split(block)) { + err = split_block(mm, block); + + if (unlikely(err)) + goto err_undo; + } + + list_add(&block->right->tmp_link, &dfs); + list_add(&block->left->tmp_link, &dfs); + } + + return -ENOSPC; + +err_undo: + buddy = get_buddy(block); + if (buddy && + (drm_buddy_block_is_free(block) && + drm_buddy_block_is_free(buddy))) + __drm_buddy_free(mm, block); + return err; +} + static struct drm_buddy_block * alloc_range(struct drm_buddy_mm *mm, u64 start, u64 end, diff --git a/include/drm/drm_buddy.h b/include/drm/drm_buddy.h index 19c7e298613e..993312841140 100644 --- a/include/drm/drm_buddy.h +++ b/include/drm/drm_buddy.h @@ -145,6 +145,10 @@ int drm_buddy_alloc(struct drm_buddy_mm *mm, struct list_head *blocks, unsigned long flags); +int drm_buddy_free_unused_pages(struct drm_buddy_mm *mm, + u64 actual_size, + struct list_head *blocks); + void drm_buddy_free(struct drm_buddy_mm *mm, struct drm_buddy_block *block); void drm_buddy_free_list(struct drm_buddy_mm *mm, struct list_head *objects);