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Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: [PATCH V1] accel/amdxdna: Add per-process BO memory usage query support Content-Language: en-US To: Ian Rogers CC: Mario Limonciello , , , , , Max Zhen , , References: <20260324163159.2425461-1-lizhi.hou@amd.com> <1e573513-b281-4ae3-9140-7a87ee9dab08@amd.com> <45bc86ee-cc0f-2b99-f876-9e8861be365e@amd.com> From: Lizhi Hou In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH3PEPF0000000D:EE_|IA1PR12MB8518:EE_ X-MS-Office365-Filtering-Correlation-Id: 3d734812-bfc6-4e42-3931-08de8f3d9fbe X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|36860700016|1800799024|18002099003|22082099003|56012099003; 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:NLI;SFV:NSPM;H:satlexmb08.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(82310400026)(376014)(36860700016)(1800799024)(18002099003)(22082099003)(56012099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: papjhh8DJTc2YCYPdLy+dl6gj1uKD9mN9kpCnecuEtVmo0hAGAQkHIH9RiQRkJe5dVjgzSpiAtz/79iGlKsW3q0rU7wuVkyo+bzjBJ6xRzJHE3zCDdkimma/6QgQzwyNQjKnFQlmbt/RdtpsbitV80MEXJ4vf8RAUJOdcBoc50vGwo9Q/0cVuBT3ktUvVAvUCbf/Z9diEjLKrCj+Albb8edBlJBb14pmw6fECMzo0rx83T5qbFP36JgUKjqyBg567PshhSj5ZKieaqcOVa5BkaCiK22Zvn4zX08KdJ88a4kJBPObUuWaLSjYceq+IzzigpcISoxrX/GfrGN8aTbBoOgUjvDIFO/WhYjbFYLnk9odUFdmY7C5C4RyZu7sdzETmO6GUXO7dLX8HbOWc8rTn2a4qZzGIbJ50hsS4lTm/ckSuQ3Gwh83G7//cKfUMabb X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 31 Mar 2026 15:53:16.8715 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3d734812-bfc6-4e42-3931-08de8f3d9fbe 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=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CH3PEPF0000000D.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB8518 On 3/30/26 19:30, Ian Rogers wrote: > On Wed, Mar 25, 2026 at 11:47 AM Lizhi Hou wrote: >> Applied to drm-misc-next. >> >> On 3/24/26 10:01, Mario Limonciello wrote: >>> >>> On 3/24/26 11:31, Lizhi Hou wrote: >>>> From: Max Zhen >>>> >>>> Add support for querying per-process buffer object (BO) memory >>>> usage through the amdxdna GET_ARRAY UAPI. >>>> >>>> Introduce a new query type, DRM_AMDXDNA_BO_USAGE, along with >>>> struct amdxdna_drm_bo_usage to report BO memory usage statistics, >>>> including heap, total, and internal usage. >>>> >>>> Track BO memory usage on a per-client basis by maintaining counters >>>> in GEM open/close and heap allocation/free paths. This ensures the >>>> reported statistics reflect the current memory footprint of each >>>> process. >>>> >>>> Wire the new query into the GET_ARRAY implementation to expose >>>> the usage information to userspace. >>>> >>>> Signed-off-by: Max Zhen >>>> Reviewed-by: Lizhi Hou >>>> Signed-off-by: Lizhi Hou >>> I'm assuming you also have userspace side ready for this too right? >>> If you have a link handy can you please include it when committing. > Sorry for a naive question, would support in procfs be possible? Do you mean fdinfo? And yes, the fdinfo is in our upstream stack. I will post the patch later. Lizhi > There's support in perf for displaying DRM usage stat data from there > [1], for example: > ``` > $ perf list drm- > > List of pre-defined events (to be used in -e or -M): > > > drm: > drm-active-stolen-system0 > [Total memory active in one or more engines. Unit: drm_i915] > drm-active-system0 > [Total memory active in one or more engines. Unit: drm_i915] > drm-engine-capacity-video > [Engine capacity. Unit: drm_i915] > drm-engine-copy > [Utilization in ns. Unit: drm_i915] > drm-engine-render > [Utilization in ns. Unit: drm_i915] > drm-engine-video > [Utilization in ns. Unit: drm_i915] > drm-engine-video-enhance > [Utilization in ns. Unit: drm_i915] > drm-purgeable-stolen-system0 > [Size of resident and purgeable memory buffers. Unit: drm_i915] > drm-purgeable-system0 > [Size of resident and purgeable memory buffers. Unit: drm_i915] > drm-resident-stolen-system0 > [Size of resident memory buffers. Unit: drm_i915] > drm-resident-system0 > [Size of resident memory buffers. Unit: drm_i915] > drm-shared-stolen-system0 > [Size of shared memory buffers. Unit: drm_i915] > drm-shared-system0 > [Size of shared memory buffers. Unit: drm_i915] > drm-total-stolen-system0 > [Size of shared and private memory. Unit: drm_i915] > drm-total-system0 > [Size of shared and private memory. Unit: drm_i915] > > > $ perf stat -e drm-engine-render -a sleep 1 > > Performance counter stats for 'system wide': > > 557,542,732,344 ns drm-engine-render > > 1.001575975 seconds time elapsed > ``` > > Thanks, > Ian > > [1] https://lore.kernel.org/lkml/20250403202439.57791-1-irogers@google.com/