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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 BL02EPF0000C402.mail.protection.outlook.com (10.167.241.4) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5612.10 via Frontend Transport; Mon, 5 Sep 2022 16:35:44 +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 11:35:40 -0500 From: Arvind Yadav To: , , , , , , , , , , , , CC: Arvind Yadav Subject: [PATCH v2 1/4] drm/sched: Enable signaling for finished fence Date: Mon, 5 Sep 2022 22:04:59 +0530 Message-ID: <20220905163502.4032-2-Arvind.Yadav@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220905163502.4032-1-Arvind.Yadav@amd.com> References: <20220905163502.4032-1-Arvind.Yadav@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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-TrafficTypeDiagnostic: BL02EPF0000C402:EE_|BN9PR12MB5131:EE_ X-MS-Office365-Filtering-Correlation-Id: 31f5b680-64a4-4fd6-6472-08da8f5cadde 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 16:35:44.2361 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 31f5b680-64a4-4fd6-6472-08da8f5cadde 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: BL02EPF0000C402.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN9PR12MB5131 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Here's enabling software signaling for finished fence. Signed-off-by: Arvind Yadav --- Changes in v1 : 1- Addressing Christian's comment to remove CONFIG_DEBUG_FS check from=20 this patch.=20 2- The version of this patch is also changed and previously it was [PATCH 2/4] --- drivers/gpu/drm/scheduler/sched_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/sched= uler/sched_main.c index e0ab14e0fb6b..fe72de0e2911 100644 --- a/drivers/gpu/drm/scheduler/sched_main.c +++ b/drivers/gpu/drm/scheduler/sched_main.c @@ -962,6 +962,8 @@ static int drm_sched_main(void *param) /* Drop for original kref_init of the fence */ dma_fence_put(fence); =20 + dma_fence_enable_sw_signaling(&s_fence->finished); + r =3D dma_fence_add_callback(fence, &sched_job->cb, drm_sched_job_done_cb); if (r =3D=3D -ENOENT) --=20 2.25.1 From nobody Mon Apr 6 17:05:21 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A305FECAAD3 for ; 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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 BL02EPF0000C406.mail.protection.outlook.com (10.167.241.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5612.11 via Frontend Transport; Mon, 5 Sep 2022 16:35:50 +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 11:35:46 -0500 From: Arvind Yadav To: , , , , , , , , , , , , CC: Arvind Yadav Subject: [PATCH v2 2/4] dma-buf: enable signaling for the stub fence on debug Date: Mon, 5 Sep 2022 22:05:00 +0530 Message-ID: <20220905163502.4032-3-Arvind.Yadav@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220905163502.4032-1-Arvind.Yadav@amd.com> References: <20220905163502.4032-1-Arvind.Yadav@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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-TrafficTypeDiagnostic: BL02EPF0000C406:EE_|MW3PR12MB4491:EE_ X-MS-Office365-Filtering-Correlation-Id: 9097f839-af40-43ba-768a-08da8f5cb1bf 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 16:35:50.7598 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9097f839-af40-43ba-768a-08da8f5cb1bf 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: BL02EPF0000C406.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW3PR12MB4491 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Here's on debug enabling software signaling for the stub fence which is always signaled. This fence should enable software signaling otherwise the AMD GPU scheduler will cause a GPU reset due to a GPU scheduler cleanup activity timeout. Signed-off-by: Arvind Yadav --- Changes in v1 : 1- Addressing Christian's comment to remove unnecessary callback. 2- Replacing CONFIG_DEBUG_WW_MUTEX_SLOWPATH instead of CONFIG_DEBUG_FS. 3- The version of this patch is also changed and previously it was [PATCH 3/4] --- drivers/dma-buf/dma-fence.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c index 066400ed8841..2378b12538c4 100644 --- a/drivers/dma-buf/dma-fence.c +++ b/drivers/dma-buf/dma-fence.c @@ -27,6 +27,10 @@ EXPORT_TRACEPOINT_SYMBOL(dma_fence_signaled); static DEFINE_SPINLOCK(dma_fence_stub_lock); static struct dma_fence dma_fence_stub; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH +static bool __dma_fence_enable_signaling(struct dma_fence *fence); +#endif + /* * fence context counter: each execution context should have its own * fence context, this allows checking if fences belong to the same @@ -136,6 +140,9 @@ struct dma_fence *dma_fence_get_stub(void) &dma_fence_stub_ops, &dma_fence_stub_lock, 0, 0); +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + __dma_fence_enable_signaling(&dma_fence_stub); +#endif dma_fence_signal_locked(&dma_fence_stub); } spin_unlock(&dma_fence_stub_lock); --=20 2.25.1 From nobody Mon Apr 6 17:05:21 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 91D37ECAAD3 for ; Mon, 5 Sep 2022 16:36:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237050AbiIEQgL (ORCPT ); Mon, 5 Sep 2022 12:36:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46126 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236506AbiIEQgE (ORCPT ); Mon, 5 Sep 2022 12:36:04 -0400 Received: from NAM11-DM6-obe.outbound.protection.outlook.com (mail-dm6nam11on2078.outbound.protection.outlook.com [40.107.223.78]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 876FF5AC76; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Sep 2022 16:35:58.0901 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 84eb3842-1a79-446d-5a5e-08da8f5cb620 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: BL02EPF0000C403.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW3PR12MB4476 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Here's on debug enabling software signaling for selftest. Signed-off-by: Arvind Yadav --- Changes in v1 : 1- Addressing Christian's comment to remove unnecessary callback. 2- Replacing CONFIG_DEBUG_WW_MUTEX_SLOWPATH instead of CONFIG_DEBUG_FS. 3- The version of this patch is also changed and previously it was [PATCH 4/4] --- drivers/dma-buf/st-dma-fence-chain.c | 8 +++++ drivers/dma-buf/st-dma-fence-unwrap.c | 44 +++++++++++++++++++++++++++ drivers/dma-buf/st-dma-fence.c | 25 ++++++++++++++- drivers/dma-buf/st-dma-resv.c | 20 ++++++++++++ 4 files changed, 96 insertions(+), 1 deletion(-) diff --git a/drivers/dma-buf/st-dma-fence-chain.c b/drivers/dma-buf/st-dma-= fence-chain.c index 8ce1ea59d31b..d3070f8a393c 100644 --- a/drivers/dma-buf/st-dma-fence-chain.c +++ b/drivers/dma-buf/st-dma-fence-chain.c @@ -87,6 +87,10 @@ static int sanitycheck(void *arg) if (!chain) err =3D -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(chain); +#endif + dma_fence_signal(f); dma_fence_put(f); =20 @@ -143,6 +147,10 @@ static int fence_chains_init(struct fence_chains *fc, = unsigned int count, } =20 fc->tail =3D fc->chains[i]; + +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(fc->chains[i]); +#endif } =20 fc->chain_length =3D i; diff --git a/drivers/dma-buf/st-dma-fence-unwrap.c b/drivers/dma-buf/st-dma= -fence-unwrap.c index 4105d5ea8dde..b76cdd9ee0c7 100644 --- a/drivers/dma-buf/st-dma-fence-unwrap.c +++ b/drivers/dma-buf/st-dma-fence-unwrap.c @@ -102,6 +102,10 @@ static int sanitycheck(void *arg) if (!f) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f); +#endif + array =3D mock_array(1, f); if (!array) return -ENOMEM; @@ -124,12 +128,20 @@ static int unwrap_array(void *arg) if (!f1) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f1); +#endif + f2 =3D mock_fence(); if (!f2) { dma_fence_put(f1); return -ENOMEM; } =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f2); +#endif + array =3D mock_array(2, f1, f2); if (!array) return -ENOMEM; @@ -164,12 +176,20 @@ static int unwrap_chain(void *arg) if (!f1) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f1); +#endif + f2 =3D mock_fence(); if (!f2) { dma_fence_put(f1); return -ENOMEM; } =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f2); +#endif + chain =3D mock_chain(f1, f2); if (!chain) return -ENOMEM; @@ -204,12 +224,20 @@ static int unwrap_chain_array(void *arg) if (!f1) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f1); +#endif + f2 =3D mock_fence(); if (!f2) { dma_fence_put(f1); return -ENOMEM; } =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f2); +#endif + array =3D mock_array(2, f1, f2); if (!array) return -ENOMEM; @@ -248,12 +276,20 @@ static int unwrap_merge(void *arg) if (!f1) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f1); +#endif + f2 =3D mock_fence(); if (!f2) { err =3D -ENOMEM; goto error_put_f1; } =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f2); +#endif + f3 =3D dma_fence_unwrap_merge(f1, f2); if (!f3) { err =3D -ENOMEM; @@ -296,10 +332,18 @@ static int unwrap_merge_complex(void *arg) if (!f1) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f1); +#endif + f2 =3D mock_fence(); if (!f2) goto error_put_f1; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f2); +#endif + f3 =3D dma_fence_unwrap_merge(f1, f2); if (!f3) goto error_put_f2; diff --git a/drivers/dma-buf/st-dma-fence.c b/drivers/dma-buf/st-dma-fence.c index c8a12d7ad71a..b7880d8374db 100644 --- a/drivers/dma-buf/st-dma-fence.c +++ b/drivers/dma-buf/st-dma-fence.c @@ -101,7 +101,9 @@ static int sanitycheck(void *arg) f =3D mock_fence(); if (!f) return -ENOMEM; - +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f); +#endif dma_fence_signal(f); dma_fence_put(f); =20 @@ -117,6 +119,9 @@ static int test_signaling(void *arg) if (!f) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f); +#endif if (dma_fence_is_signaled(f)) { pr_err("Fence unexpectedly signaled on creation\n"); goto err_free; @@ -190,6 +195,9 @@ static int test_late_add_callback(void *arg) if (!f) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f); +#endif dma_fence_signal(f); =20 if (!dma_fence_add_callback(f, &cb.cb, simple_callback)) { @@ -282,6 +290,9 @@ static int test_status(void *arg) if (!f) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f); +#endif if (dma_fence_get_status(f)) { pr_err("Fence unexpectedly has signaled status on creation\n"); goto err_free; @@ -308,6 +319,9 @@ static int test_error(void *arg) if (!f) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f); +#endif dma_fence_set_error(f, -EIO); =20 if (dma_fence_get_status(f)) { @@ -337,6 +351,9 @@ static int test_wait(void *arg) if (!f) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f); +#endif if (dma_fence_wait_timeout(f, false, 0) !=3D -ETIME) { pr_err("Wait reported complete before being signaled\n"); goto err_free; @@ -379,6 +396,9 @@ static int test_wait_timeout(void *arg) if (!wt.f) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(wt.f); +#endif if (dma_fence_wait_timeout(wt.f, false, 1) !=3D -ETIME) { pr_err("Wait reported complete before being signaled\n"); goto err_free; @@ -458,6 +478,9 @@ static int thread_signal_callback(void *arg) break; } =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f1); +#endif rcu_assign_pointer(t->fences[t->id], f1); smp_wmb(); =20 diff --git a/drivers/dma-buf/st-dma-resv.c b/drivers/dma-buf/st-dma-resv.c index 813779e3c9be..bd7ef58f8b24 100644 --- a/drivers/dma-buf/st-dma-resv.c +++ b/drivers/dma-buf/st-dma-resv.c @@ -45,6 +45,10 @@ static int sanitycheck(void *arg) if (!f) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f); +#endif + dma_fence_signal(f); dma_fence_put(f); =20 @@ -69,6 +73,10 @@ static int test_signaling(void *arg) if (!f) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f); +#endif + dma_resv_init(&resv); r =3D dma_resv_lock(&resv, NULL); if (r) { @@ -114,6 +122,10 @@ static int test_for_each(void *arg) if (!f) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f); +#endif + dma_resv_init(&resv); r =3D dma_resv_lock(&resv, NULL); if (r) { @@ -173,6 +185,10 @@ static int test_for_each_unlocked(void *arg) if (!f) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f); +#endif + dma_resv_init(&resv); r =3D dma_resv_lock(&resv, NULL); if (r) { @@ -244,6 +260,10 @@ static int test_get_fences(void *arg) if (!f) return -ENOMEM; =20 +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + dma_fence_enable_sw_signaling(f); +#endif + dma_resv_init(&resv); r =3D dma_resv_lock(&resv, NULL); if (r) { --=20 2.25.1 From nobody Mon Apr 6 17:05:21 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C3848ECAAD5 for ; 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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 BL02EPF0000C405.mail.protection.outlook.com (10.167.241.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5612.10 via Frontend Transport; Mon, 5 Sep 2022 16:36:04 +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 11:36:00 -0500 From: Arvind Yadav To: , , , , , , , , , , , , CC: Arvind Yadav Subject: [PATCH v2 4/4] dma-buf: Check status of enable-signaling bit on debug Date: Mon, 5 Sep 2022 22:05:02 +0530 Message-ID: <20220905163502.4032-5-Arvind.Yadav@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220905163502.4032-1-Arvind.Yadav@amd.com> References: <20220905163502.4032-1-Arvind.Yadav@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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-TrafficTypeDiagnostic: BL02EPF0000C405:EE_|DM4PR12MB6469:EE_ X-MS-Office365-Filtering-Correlation-Id: fc92a4e0-66a1-464e-09b3-08da8f5cba32 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 16:36:04.9168 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: fc92a4e0-66a1-464e-09b3-08da8f5cba32 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: BL02EPF0000C405.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6469 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The core DMA-buf framework needs to enable signaling before the fence is signaled. The core DMA-buf framework can forget to enable signaling before the fence is signaled. To avoid this scenario on the debug kernel, check the DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT status bit before checking the signaling bit status to confirm that enable_signaling is enabled. Signed-off-by: Arvind Yadav --- Changes in v1 : 1- Addressing Christian's comment to replace CONFIG_DEBUG_WW_MUTEX_SLOWPATH instead of CONFIG_DEBUG_FS. 2- As per Christian's comment moving this patch at last so The version of this patch is also changed and previously it was [PATCH 1/4] --- include/linux/dma-fence.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h index 775cdc0b4f24..ba1ddc14c5d4 100644 --- a/include/linux/dma-fence.h +++ b/include/linux/dma-fence.h @@ -428,6 +428,11 @@ dma_fence_is_signaled_locked(struct dma_fence *fence) static inline bool dma_fence_is_signaled(struct dma_fence *fence) { +#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH + if (!test_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT, &fence->flags)) + return false; +#endif + if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags)) return true; =20 --=20 2.25.1