Re: [PATCH v3] drm/i915/pmu: Deprecate I915_PMU_LAST and optimize state tracking

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On 01/12/2020 13:23, Chris Wilson wrote:
Quoting Tvrtko Ursulin (2020-12-01 13:17:57)
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index fa1f3d62f9a6..6edcb2b6c708 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -178,7 +178,7 @@ enum drm_i915_pmu_engine_sample {
  #define I915_PMU_INTERRUPTS            __I915_PMU_OTHER(2)
  #define I915_PMU_RC6_RESIDENCY         __I915_PMU_OTHER(3)
-#define I915_PMU_LAST I915_PMU_RC6_RESIDENCY
+#define I915_PMU_LAST /* Deprecated - do not use */ I915_PMU_RC6_RESIDENCY

Do we still update the value, or let it rot?

Rot for a while and then zap was my plan. As soon as I wean perf_pmu of it. Too bold and reckless?

Regards,

Tvrtko
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