On 09/10/2019 23:52, Chris Wilson wrote:
Quoting Lionel Landwerlin (2019-10-09 21:46:56)
Hmm... nope, sorry.
We'll loose NOA configuration if you do that.
And you'll have to rerun the oa config BO prior to enabling.
Is that not worth it? Move the enable_metric_set/disable_metric_set to
i915_perf_enable_locked as well?
-Chris
It takes some time to apply the configuration so not really worth it.
Plus either you do perf queries and as soon as you're finished you
shutdown OA, or you monitor the whole system and then you just can't
have RC6 kick in.
The only real use case of those enable/disable ioctl is to reset the
head/tail register of the OA buffer because data head started
overwriting the tail.
-Lionel
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