From: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
As contexts are abandoned we want to remember how much GPU time they used
(per class) so later we can used it for smarter purposes.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 13 ++++++++++++-
drivers/gpu/drm/i915/gem/i915_gem_context_types.h | 5 +++++
2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c
b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index c49cfec6d616..c521155a6474 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -257,7 +257,19 @@ static void free_engines_rcu(struct rcu_head *rcu)
{
struct i915_gem_engines *engines =
container_of(rcu, struct i915_gem_engines, rcu);
+ struct i915_gem_context *ctx = engines->ctx;
+ struct i915_gem_engines_iter it;
+ struct intel_context *ce;
+
+ /* Transfer accumulated runtime to the parent GEM context. */
+ for_each_gem_engine(ce, engines, it) {
+ unsigned int class = ce->engine->uabi_class;
+ GEM_BUG_ON(class >= ARRAY_SIZE(ctx->past_runtime));
+ atomic64_add(ce->runtime.total, &ctx->past_runtime[class]);
+ }
+
+ i915_gem_context_put(ctx);
i915_sw_fence_fini(&engines->fence);
free_engines(engines);
}
@@ -540,7 +552,6 @@ static int engines_notify(struct i915_sw_fence *fence,
list_del(&engines->link);
spin_unlock_irqrestore(&ctx->stale.lock, flags);
}
- i915_gem_context_put(engines->ctx);
break;
case FENCE_FREE:
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
index b0e03380c690..f0d7441aafc8 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
@@ -177,6 +177,11 @@ struct i915_gem_context {
spinlock_t lock;
struct list_head engines;
} stale;
+
+ /**
+ * @past_runtime: Accumulation of freed intel_context pphwsp runtimes.
+ */
+ atomic64_t past_runtime[MAX_ENGINE_CLASS + 1];
};
#endif /* __I915_GEM_CONTEXT_TYPES_H__ */
--
2.20.1
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