From patchwork Mon Dec 16 13:07:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Paneer Selvam, Arunpravin" X-Patchwork-Id: 13909696 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 7B363E77183 for ; Mon, 16 Dec 2024 13:07:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 04AE810E65D; Mon, 16 Dec 2024 13:07:59 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=amd.com header.i=@amd.com header.b="Jj4POjvv"; dkim-atps=neutral Received: from NAM10-MW2-obe.outbound.protection.outlook.com (mail-mw2nam10on2062a.outbound.protection.outlook.com [IPv6:2a01:111:f403:2412::62a]) by gabe.freedesktop.org (Postfix) with ESMTPS id 10C9510E60A; Mon, 16 Dec 2024 13:07:57 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=wtF6aQFChIHDaIGnj8tg8eNgnJVbM5oNmIFmsgtUEN517RJV4syuNDYu1Cl5IZYZQwTTgjoEmy0Tj2Dpg70C88odWVhinNl3aG56MkTqT9y/IVev5kbL6krAv+YH198WNVaKy4ugV6tQkv1CQP0N94gUVFsKOeP8M6eSFHu5gp0WDdlU2WXNfdicMo7tPzt/YaR6C9AWZQZJNpcmB+lRRCuvZMyTAhgqyw+T3n3oHE1ogbQDLEStB+qozuhxyRFzK1qSLNl++eAblJMpxmkN8u99dKzyufDsxuPpat7bOEMSOHiyUHlj6fGf8fwGcOFqJVLYj0nWBdCruxkVx5816w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=qq/EPqYxpPIWZB6ifTuweea9NtWpXryCJNPdoxCBEjo=; b=QNHULf4YuJe4jX8GSdFUFRfBxJ7IZy1Vw+Vsw+Y4D7vA06SdUYj7lgPovp+Kk7L3sfLeOKu+mAaenFeEsE0orbUdU9JsNlFBEIimWECz8P8BYjsJUFF4J/+r6ciFFq6NZm7Nul92M9e+lYFCQdjLeIiXBwq2pbYfuXCFGExAd3PwEtkguuHhbG2/hIVHRPdf+QazgAGoh20FVHNotyloTv14ZGzqS/48drKnEZML0+vUXkz4VxTI7G1STShEHmjCB6ycchmofs933oFSR/kntYK4jJ9Hfoa+an1R1pF/rGOVVfNls4/j7It8MfkEqJcUh1UMDfwgmThQV6k+LRbQwQ== 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 (0) 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=qq/EPqYxpPIWZB6ifTuweea9NtWpXryCJNPdoxCBEjo=; b=Jj4POjvv3NovQ8sSjWS9umXfJ9jBvQM6xG9mX3zZPvhkk2nQhMj/g1uBvo2cQuqHpHz0dTTQIRh+wVS39IsTne4efC6bP1hz0nI3gaXFIBY1VbCKOBLjZP5n9ikt8FlWihTDDbhBVQUy1dgMFH4k/Xr6GLcNGqomI8OhYwFJq+s= Received: from SJ0PR05CA0045.namprd05.prod.outlook.com (2603:10b6:a03:33f::20) by CYXPR12MB9318.namprd12.prod.outlook.com (2603:10b6:930:de::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8251.21; Mon, 16 Dec 2024 13:07:52 +0000 Received: from SJ1PEPF000023D1.namprd02.prod.outlook.com (2603:10b6:a03:33f:cafe::54) by SJ0PR05CA0045.outlook.office365.com (2603:10b6:a03:33f::20) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.8272.10 via Frontend Transport; Mon, 16 Dec 2024 13:07:51 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;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; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by SJ1PEPF000023D1.mail.protection.outlook.com (10.167.244.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8251.15 via Frontend Transport; Mon, 16 Dec 2024 13:07:51 +0000 Received: from amd-X570-AORUS-ELITE.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 15.1.2507.39; Mon, 16 Dec 2024 07:07:48 -0600 From: Arunpravin Paneer Selvam To: , , CC: , , "Arunpravin Paneer Selvam" , "Lin . Cao" Subject: [PATCH 1/2] drm/buddy: fix issue that force_merge cannot free all roots Date: Mon, 16 Dec 2024 18:37:34 +0530 Message-ID: <20241216130735.314298-1-Arunpravin.PaneerSelvam@amd.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000023D1:EE_|CYXPR12MB9318:EE_ X-MS-Office365-Filtering-Correlation-Id: c93dc199-76ff-47f6-8110-08dd1dd2a5c5 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|82310400026|36860700013|376014|1800799024; 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:(13230040)(82310400026)(36860700013)(376014)(1800799024); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Dec 2024 13:07:51.6437 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c93dc199-76ff-47f6-8110-08dd1dd2a5c5 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: SJ1PEPF000023D1.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CYXPR12MB9318 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: Lin.Cao If buddy manager have more than one roots and each root have sub-block need to be free. When drm_buddy_fini called, the first loop of force_merge will merge and free all of the sub block of first root, which offset is 0x0 and size is biggest(more than have of the mm size). In subsequent force_merge rounds, if we use 0 as start and use remaining mm size as end, the block of other roots will be skipped in __force_merge function. It will cause the other roots can not be freed. Solution: use roots' offset as the start could fix this issue. Signed-off-by: Lin.Cao Reviewed-by: Matthew Auld --- drivers/gpu/drm/drm_buddy.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_buddy.c b/drivers/gpu/drm/drm_buddy.c index 103c185bb1c8..ca42e6081d27 100644 --- a/drivers/gpu/drm/drm_buddy.c +++ b/drivers/gpu/drm/drm_buddy.c @@ -324,7 +324,7 @@ EXPORT_SYMBOL(drm_buddy_init); */ void drm_buddy_fini(struct drm_buddy *mm) { - u64 root_size, size; + u64 root_size, size, start; unsigned int order; int i; @@ -332,7 +332,8 @@ void drm_buddy_fini(struct drm_buddy *mm) for (i = 0; i < mm->n_roots; ++i) { order = ilog2(size) - ilog2(mm->chunk_size); - __force_merge(mm, 0, size, order); + start = drm_buddy_block_offset(mm->roots[i]); + __force_merge(mm, start, start + size, order); WARN_ON(!drm_buddy_block_is_free(mm->roots[i])); drm_block_free(mm, mm->roots[i]);