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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Dec 2024 19:16:35.5856 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e5b8ed3c-7033-4fdd-102c-08dd1a18548c X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[63.35.35.123];Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: AMS0EPF000001B7.eurprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR08MB5893 On 11/12/2024 17:02, Adrián Larumbe wrote: > Hi Mihail, > > On 11.12.2024 16:40, Mihail Atanassov wrote: >> Hi Adrián, >> >> On 11/12/2024 16:34, Adrián Larumbe wrote: >>> A previous commit enabled display of driver-internal kernel BO sizes >>> through the device file's fdinfo interface. >>> >>> Expand the description of the relevant driver-specific key:value pairs >>> with the definitions of the new drm-*-internal ones. >>> >>> Signed-off-by: Adrián Larumbe >>> --- >>> Documentation/gpu/panthor.rst | 14 ++++++++++++++ >>> 1 file changed, 14 insertions(+) >>> >>> diff --git a/Documentation/gpu/panthor.rst b/Documentation/gpu/panthor.rst >>> index 3f8979fa2b86..c6d8236e3665 100644 >>> --- a/Documentation/gpu/panthor.rst >>> +++ b/Documentation/gpu/panthor.rst >>> @@ -26,6 +26,10 @@ the currently possible format options: >>> drm-cycles-panthor: 94439687187 >>> drm-maxfreq-panthor: 1000000000 Hz >>> drm-curfreq-panthor: 1000000000 Hz >>> + drm-total-internal: 10396 KiB >>> + drm-shared-internal: 0 >> >> You give an example of `drm-shared-internal`... >> >>> + drm-active-internal: 10396 KiB >>> + drm-resident-internal: 10396 KiB >>> drm-total-memory: 16480 KiB >>> drm-shared-memory: 0 >>> drm-active-memory: 16200 KiB >>> @@ -44,3 +48,13 @@ driver by writing into the appropriate sysfs node:: >>> Where `N` is a bit mask where cycle and timestamp sampling are respectively >>> enabled by the first and second bits. >>> + >>> +Possible `drm-*-internal` key names are: `total`, `active` and `resident`. >> >> ... but don't list it as a valid key name here. > > I do mention slightly further below that that key:value pair is at the time being unused, > but I've thought of a possible interpretation that could be part of another commit. Understood, it just looks weird reading the paragraph after the context above. Seeing as `drm_print_memory_stats` will always emit it, it stands to reason it's a valid key name, just with no assigned meaning to it (yet). I'm being nit-picky :). Feel free to add my R-b with or without the extra key in the list. > >>> +These values convey the sizes of the internal driver-owned shmem BO's that >>> +aren't exposed to user-space through a DRM handle, like queue ring buffers, >>> +sync object arrays and heap chunks. Because they are all allocated and pinned >>> +at creation time, `drm-resident-internal` and `drm-total-internal` should always >>> +be equal. `drm-active-internal` shows the size of kernel BO's associated with >>> +VM's and groups currently being scheduled for execution by the GPU. >>> +`drm-shared-memory` is unused at present, but in the future it might stand for >>> +the size of the Firmware regions, since they do not belong to an open file context. >> >> -- >> Mihail Atanassov > > Adrian Larumbe -- Mihail Atanassov