[igt-dev] [PATCH i-g-t] tests/perf: add tests for triggered OA reports

[Lionel Landwerlin]

On 31/03/2020 17:24, Chris Wilson wrote:
> Quoting Lionel Landwerlin (2020-03-31 12:47:46)
>> By whitelisting a couple of registers we can allow an application
> By whitelisting, through the i915_perf interface, a couple of...
>
> I was looking for how you found a way to set RING_NONPRIV. :)


So I've been looking into this and realized, when OA is off, those 
registers won't have any effect.

And since RING_NONPRIV is global is applies to all...


So what's the point of dynamically updating NONPRIV? :(

-Lionel


>
>> batch to trigger OA reports in the OA buffer by switching back & forth
>> an inverter on the condition logic.
> Test looks reasonable, but the specific mechanics of OA I can't comment
> on.
> -Chris