Quoting Tvrtko Ursulin (2020-03-18 12:11:37)
> +static u64
> +pphwsp_busy_add(struct i915_gem_context *ctx, unsigned int class)
> +{
> + struct i915_gem_engines *engines = rcu_dereference(ctx->engines);
> + struct i915_gem_engines_iter it;
> + struct intel_context *ce;
> + u64 total = 0;
> +
> + for_each_gem_engine(ce, engines, it) {
> + if (ce->engine->uabi_class == class)
> + total += ce->runtime.total;
> + }
> +
> + return total;
> +}
> +
> +static ssize_t
> +show_client_busy(struct device *kdev, struct device_attribute *attr, char *buf)
> +{
> + struct i915_engine_busy_attribute *i915_attr =
> + container_of(attr, typeof(*i915_attr), attr);
> + unsigned int class = i915_attr->engine_class;
> + struct i915_drm_client *client = i915_attr->client;
> + u64 total = atomic64_read(&client->past_runtime[class]);
> + struct list_head *list = &client->ctx_list;
> + struct i915_gem_context *ctx;
> +
> + rcu_read_lock();
> + list_for_each_entry_rcu(ctx, list, client_link) {
> + total += atomic64_read(&ctx->past_runtime[class]);
> + total += pphwsp_busy_add(ctx, class);
Hmm. I would like to have some GEM context agnosticism here. At the
moment, all I have to offer is
struct client_runtime {
struct list_head client_link;
atomic64_t past_runtime;
u64 (*cur_runtime)(struct client_runtime *);
};
-Chris
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