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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; Received: from SATLEXMB04.amd.com (165.204.84.17) by BN8NAM11FT064.mail.protection.outlook.com (10.13.176.160) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4478.19 via Frontend Transport; Wed, 1 Sep 2021 00:46:56 +0000 Received: from SATLEXMB03.amd.com (10.181.40.144) 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 15.1.2242.12; Tue, 31 Aug 2021 19:46:52 -0500 Received: from monk-build.amd.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2242.12 via Frontend Transport; Tue, 31 Aug 2021 19:46:50 -0500 From: Monk Liu To: CC: , Monk Liu , "jingwen chen" Subject: [PATCH 2/2] drm/sched: serialize job_timeout and scheduler Date: Wed, 1 Sep 2021 08:46:47 +0800 Message-ID: <1630457207-13107-2-git-send-email-Monk.Liu@amd.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1630457207-13107-1-git-send-email-Monk.Liu@amd.com> References: <1630457207-13107-1-git-send-email-Monk.Liu@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 80c38126-eb33-4a59-ee13-08d96ce1ffe6 X-MS-TrafficTypeDiagnostic: CH2PR12MB4229: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8273; 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CAT:NONE; SFS:(4636009)(346002)(376002)(39860400002)(396003)(136003)(36840700001)(46966006)(26005)(478600001)(2906002)(47076005)(83380400001)(356005)(81166007)(82310400003)(36860700001)(6666004)(7696005)(186003)(36756003)(426003)(70206006)(70586007)(82740400003)(2616005)(4326008)(54906003)(450100002)(316002)(86362001)(336012)(6916009)(8676002)(5660300002)(8936002)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Sep 2021 00:46:56.5951 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 80c38126-eb33-4a59-ee13-08d96ce1ffe6 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: BN8NAM11FT064.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR12MB4229 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" tested-by: jingwen chen Signed-off-by: Monk Liu Signed-off-by: jingwen chen --- drivers/gpu/drm/scheduler/sched_main.c | 24 ++++-------------------- 1 file changed, 4 insertions(+), 20 deletions(-) diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c index 3e0bbc7..87d72e9 100644 --- a/drivers/gpu/drm/scheduler/sched_main.c +++ b/drivers/gpu/drm/scheduler/sched_main.c @@ -319,19 +319,17 @@ static void drm_sched_job_timedout(struct work_struct *work) sched = container_of(work, struct drm_gpu_scheduler, work_tdr.work); /* Protects against concurrent deletion in drm_sched_get_cleanup_job */ + if (!__kthread_should_park(sched->thread)) + kthread_park(sched->thread); + spin_lock(&sched->job_list_lock); job = list_first_entry_or_null(&sched->pending_list, struct drm_sched_job, list); if (job) { - /* - * Remove the bad job so it cannot be freed by concurrent - * drm_sched_cleanup_jobs. It will be reinserted back after sched->thread - * is parked at which point it's safe. - */ - list_del_init(&job->list); spin_unlock(&sched->job_list_lock); + /* vendor's timeout_job should call drm_sched_start() */ status = job->sched->ops->timedout_job(job); /* @@ -393,20 +391,6 @@ void drm_sched_stop(struct drm_gpu_scheduler *sched, struct drm_sched_job *bad) kthread_park(sched->thread); /* - * Reinsert back the bad job here - now it's safe as - * drm_sched_get_cleanup_job cannot race against us and release the - * bad job at this point - we parked (waited for) any in progress - * (earlier) cleanups and drm_sched_get_cleanup_job will not be called - * now until the scheduler thread is unparked. - */ - if (bad && bad->sched == sched) - /* - * Add at the head of the queue to reflect it was the earliest - * job extracted. - */ - list_add(&bad->list, &sched->pending_list); - - /* * Iterate the job list from later to earlier one and either deactive * their HW callbacks or remove them from pending list if they already * signaled.