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Diffstat (limited to 'Documentation/gpu/drm-usage-stats.rst')
| -rw-r--r-- | Documentation/gpu/drm-usage-stats.rst | 54 |
1 files changed, 42 insertions, 12 deletions
diff --git a/Documentation/gpu/drm-usage-stats.rst b/Documentation/gpu/drm-usage-stats.rst index 552195fb1ea3..d012eb56885e 100644 --- a/Documentation/gpu/drm-usage-stats.rst +++ b/Documentation/gpu/drm-usage-stats.rst @@ -52,6 +52,9 @@ String shall contain the name this driver registered as via the respective Optional fully standardised keys -------------------------------- +Identification +^^^^^^^^^^^^^^ + - drm-pdev: <aaaa:bb.cc.d> For PCI devices this should contain the PCI slot address of the device in @@ -69,6 +72,9 @@ scope of each device, in which case `drm-pdev` shall be present as well. Userspace should make sure to not double account any usage statistics by using the above described criteria in order to associate data to individual clients. +Utilization +^^^^^^^^^^^ + - drm-engine-<str>: <uint> ns GPUs usually contain multiple execution engines. Each shall be given a stable @@ -93,18 +99,6 @@ exported engine corresponds to a group of identical hardware engines. In the absence of this tag parser shall assume capacity of one. Zero capacity is not allowed. -- drm-memory-<str>: <uint> [KiB|MiB] - -Each possible memory type which can be used to store buffer objects by the -GPU in question shall be given a stable and unique name to be returned as the -string here. - -Value shall reflect the amount of storage currently consumed by the buffer -object belong to this client, in the respective memory region. - -Default unit shall be bytes with optional unit specifiers of 'KiB' or 'MiB' -indicating kibi- or mebi-bytes. - - drm-cycles-<str>: <uint> Engine identifier string must be the same as the one specified in the @@ -126,6 +120,42 @@ percentage utilization of the engine, whereas drm-engine-<str> only reflects time active without considering what frequency the engine is operating as a percentage of it's maximum frequency. +Memory +^^^^^^ + +- drm-memory-<region>: <uint> [KiB|MiB] + +Each possible memory type which can be used to store buffer objects by the +GPU in question shall be given a stable and unique name to be returned as the +string here. The name "memory" is reserved to refer to normal system memory. + +Value shall reflect the amount of storage currently consumed by the buffer +objects belong to this client, in the respective memory region. + +Default unit shall be bytes with optional unit specifiers of 'KiB' or 'MiB' +indicating kibi- or mebi-bytes. + +- drm-shared-<region>: <uint> [KiB|MiB] + +The total size of buffers that are shared with another file (ie. have more +than a single handle). + +- drm-total-<region>: <uint> [KiB|MiB] + +The total size of buffers that including shared and private memory. + +- drm-resident-<region>: <uint> [KiB|MiB] + +The total size of buffers that are resident in the specified region. + +- drm-purgeable-<region>: <uint> [KiB|MiB] + +The total size of buffers that are purgeable. + +- drm-active-<region>: <uint> [KiB|MiB] + +The total size of buffers that are active on one or more engines. + Implementation Details ====================== |