1 files changed, 68 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drm_client.h b/drivers/gpu/drm/i915/i915_drm_client.h
new file mode 100644
index 000000000000..f796c5e8e060
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_drm_client.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef __I915_DRM_CLIENT_H__
+#define __I915_DRM_CLIENT_H__
+
+#include <linux/kref.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/xarray.h>
+
+#include "gt/intel_engine_types.h"
+
+#define I915_LAST_UABI_ENGINE_CLASS I915_ENGINE_CLASS_COMPUTE
+
+struct drm_i915_private;
+
+struct i915_drm_clients {
+	struct drm_i915_private *i915;
+
+	struct xarray xarray;
+	u32 next_id;
+};
+
+struct i915_drm_client {
+	struct kref kref;
+
+	unsigned int id;
+
+	spinlock_t ctx_lock; /* For add/remove from ctx_list. */
+	struct list_head ctx_list; /* List of contexts belonging to client. */
+
+	struct i915_drm_clients *clients;
+
+	/**
+	 * @past_runtime: Accumulation of pphwsp runtimes from closed contexts.
+	 */
+	atomic64_t past_runtime[I915_LAST_UABI_ENGINE_CLASS + 1];
+};
+
+void i915_drm_clients_init(struct i915_drm_clients *clients,
+			   struct drm_i915_private *i915);
+
+static inline struct i915_drm_client *
+i915_drm_client_get(struct i915_drm_client *client)
+{
+	kref_get(&client->kref);
+	return client;
+}
+
+void __i915_drm_client_free(struct kref *kref);
+
+static inline void i915_drm_client_put(struct i915_drm_client *client)
+{
+	kref_put(&client->kref, __i915_drm_client_free);
+}
+
+struct i915_drm_client *i915_drm_client_add(struct i915_drm_clients *clients);
+
+#ifdef CONFIG_PROC_FS
+void i915_drm_client_fdinfo(struct seq_file *m, struct file *f);
+#endif
+
+void i915_drm_clients_fini(struct i915_drm_clients *clients);
+
+#endif /* !__I915_DRM_CLIENT_H__ */