[igt-dev] [PATCH i-g-t] lib/i915/perf: rework perf counters equations

[Lionel Landwerlin]

On 10/09/2020 13:41, Petri Latvala wrote:
> On Thu, Sep 10, 2020 at 01:15:32PM +0300, Lionel Landwerlin wrote:
>> Working with an offset means we can have the PERFCNT snapshots stored
>> at an offset in the existing accumulator rather than having a specific
>> accumulator just for them.
>>
>> This isn't really useful for IGT because it only looks at the OA
>> buffer where those registers aren't stored, but it is useful for perf
>> queries in Mesa.
>>
>> This bumps the version of the i915_perf library to reflect the API
>> change (see perf.h).
> For older versions of Mesa that cannot use this version, what's the
> method of getting a compatible i915-perf? Is it "checkout this older
> git commit"?
>
>
Mesa doesn't use the igt library (so far it's only used by the tools & 
gpuvis), only pulling in the xml files at given point.

Gpuvis should check with pkg-config.


-Lionel