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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 DM6NAM11FT016.mail.protection.outlook.com (10.13.173.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5588.10 via Frontend Transport; Mon, 5 Sep 2022 10:57:42 +0000 Received: from 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 15.1.2375.28; Mon, 5 Sep 2022 05:57:37 -0500 From: Arvind Yadav To: , , , , , , , , , , , , CC: Arvind Yadav Subject: [PATCH 0/4] dma-buf: To check enable signaling before signaled Date: Mon, 5 Sep 2022 16:26:49 +0530 Message-ID: <20220905105653.13670-1-Arvind.Yadav@amd.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain 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-Office365-Filtering-Correlation-Id: 7470613f-5454-41c1-5bdd-08da8f2d74bf X-MS-TrafficTypeDiagnostic: BY5PR12MB4164:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Sep 2022 10:57:42.0407 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7470613f-5454-41c1-5bdd-08da8f2d74bf 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: DM6NAM11FT016.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB4164 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org TTM, GEM, DRM or the core DMA-buf framework are needs to enable software signaling before the fence is signaled. The core DMA-buf framework software can forget to call enable_signaling before the fence is signaled. It means framework code can forget to call dma_fence_enable_sw_signaling() before calling dma_fence_is_signaled(). To avoid this scenario on debug kernel, check the DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT bit status before checking the MA_FENCE_FLAG_SIGNALED_BIT bit status to confirm that software signaling is enabled. Arvind Yadav (4): dma-buf: Check status of enable-signaling bit on debug drm/sched: Add callback and enable signaling on debug dma-buf: Add callback and enable signaling on debug dma-buf: Add callback and enable signaling on debug drivers/dma-buf/dma-fence.c | 17 ++++++++ drivers/dma-buf/st-dma-fence-chain.c | 17 ++++++++ drivers/dma-buf/st-dma-fence-unwrap.c | 54 +++++++++++++++++++++++++ drivers/dma-buf/st-dma-fence.c | 34 +++++++++++++++- drivers/dma-buf/st-dma-resv.c | 30 ++++++++++++++ drivers/gpu/drm/scheduler/sched_fence.c | 12 ++++++ drivers/gpu/drm/scheduler/sched_main.c | 4 +- include/linux/dma-fence.h | 5 +++ 8 files changed, 171 insertions(+), 2 deletions(-) -- 2.25.1