While I was updating the i915 perf patches for gen8+ I found I also needed to add a workaround for a tail pointer race, like we see for gen7 too. I was feeling guilty knowing there are a few limitations with the current workaround for gen7 and so want to address those before reusing the WA for gen8+ too. Robert Bragg (5): drm/i915/perf: fix gen7_append_oa_reports comment drm/i915/perf: avoid poll, read, EAGAIN busy loops drm/i915/perf: avoid read back of head register drm/i915/perf: no head/tail ref in gen7_oa_read drm/i915/perf: improve tail race workaround drivers/gpu/drm/i915/i915_drv.h | 70 +++++++- drivers/gpu/drm/i915/i915_perf.c | 342 ++++++++++++++++++++++++--------------- 2 files changed, 281 insertions(+), 131 deletions(-) -- 2.11.0 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
