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authorRobert Bragg <[email protected]>2015-06-04 23:27:36 +0100
committerRobert Bragg <[email protected]>2017-03-09 12:53:07 +0000
commiteaab41c9db1ddf320084b1af80c1da5e72160091 (patch)
treeb2e7e0e010034ec25745bda77393b74abf33e794 /src/glx/dri2.c
parentb79268174bfc59f2f19e22e65d029c69d2cbcde1 (diff)
i965: brw_context.h additions for OA unit query codegen
In preparation for generating code from the XML performance counter meta data, this makes some additions to brw_context.h for this code to be able to reference. It adds a brw->perfquery.oa_metrics_table hash table for indexing built up query descriptions by the GUID that is expected to be advertised by the kernel (via sysfs) to be able to use that query. It adds an 'OA_COUNTERS' brw_query_kind to be assigned to queries built up by generated code. It adds a brw->perfquery.sys_vars structure to have a consistent place to represent the different system variables like $EuCoresTotalCount and $EuSlicesTotalCount that are referenced by OA counter normalization equations. Although extending + referencing gen_device_info for these variables was considered, these are some of the (mostly minor) reasons for going with a dedicated structure: - Currently we only need this info for the performance_query backend and it might be a bit tedious to go back and initialize the state for pre-Haswell devinfo structures. - Considering the $SubsliceMask then the requirement for how multiple per-slice masks are packed only comes from how the variables are references by availability tests in XML, and might not be a good general representation for tracking subslice masks if another use case arises. - If we used gen_device_info then we'd likely want to avoid making assumptions about the C types during codegen and adding explicit casts, while that's not necessary with a dedicated struct with all members being uint64_t. - This structure and the code for initializing it is currently shared (just through copy & paste) with a few other projects dealing with OA counters, and that's been convenient so far. Signed-off-by: Robert Bragg <[email protected]> Reviewed-by: Lionel Landwerlin <[email protected]> Acked-by: Kenneth Graunke <[email protected]>
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