drm/i915/perf: Reintroduce wait on OA configuration completion
We still need to wait for the initial OA configuration to happen before we enable OA report writes to the OA buffer. Reported-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Fixes: 15d0ace1 ("drm/i915/perf: execute OA configuration from command stream") Closes: https://gitlab.freedesktop.org/drm/intel/issues/1356 Testcase: igt/perf/stream-open-close Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200302085812.4172450-7-chris@chris-wilson.co.uk (cherry picked from commit 4b4e973d) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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