Fix DriverGet to handle failed drivers and avoid layer init during checks

oneapi-src / level-zero

oneAPI Level Zero Specification Headers and Loader

MIT License

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Closed nrspruit closed 2 months ago

nrspruit commented 2 months ago

During init, instrumentation may call driver get before uinitialized drivers can be removed. DriverGet has been updated to return the driver count only for valid drivers and update drivers that are not init to be skipped in subsequent DriverGet calls.
Dont run layer init during checks for driver init to avoid creating invalid layer ddi table calls.

nrspruit commented 2 months ago

While I don't fully understand all edge cases here, in general looks good. Do we have test cases for this?

test_pin in the CTS with intercept layer enabled.