Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 160 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_drm_client.c b/drivers/gpu/drm/i915/i915_drm_client.c
new file mode 100644
index 000000000..b09d1d386
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_drm_client.c
@@ -0,0 +1,160 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <uapi/drm/i915_drm.h>
+
+#include <drm/drm_print.h>
+
+#include "gem/i915_gem_context.h"
+#include "i915_drm_client.h"
+#include "i915_file_private.h"
+#include "i915_gem.h"
+#include "i915_utils.h"
+
+void i915_drm_clients_init(struct i915_drm_clients *clients,
+			   struct drm_i915_private *i915)
+{
+	clients->i915 = i915;
+	clients->next_id = 0;
+
+	xa_init_flags(&clients->xarray, XA_FLAGS_ALLOC | XA_FLAGS_LOCK_IRQ);
+}
+
+struct i915_drm_client *i915_drm_client_add(struct i915_drm_clients *clients)
+{
+	struct i915_drm_client *client;
+	struct xarray *xa = &clients->xarray;
+	int ret;
+
+	client = kzalloc(sizeof(*client), GFP_KERNEL);
+	if (!client)
+		return ERR_PTR(-ENOMEM);
+
+	xa_lock_irq(xa);
+	ret = __xa_alloc_cyclic(xa, &client->id, client, xa_limit_32b,
+				&clients->next_id, GFP_KERNEL);
+	xa_unlock_irq(xa);
+	if (ret < 0)
+		goto err;
+
+	kref_init(&client->kref);
+	spin_lock_init(&client->ctx_lock);
+	INIT_LIST_HEAD(&client->ctx_list);
+	client->clients = clients;
+
+	return client;
+
+err:
+	kfree(client);
+
+	return ERR_PTR(ret);
+}
+
+void __i915_drm_client_free(struct kref *kref)
+{
+	struct i915_drm_client *client =
+		container_of(kref, typeof(*client), kref);
+	struct xarray *xa = &client->clients->xarray;
+	unsigned long flags;
+
+	xa_lock_irqsave(xa, flags);
+	__xa_erase(xa, client->id);
+	xa_unlock_irqrestore(xa, flags);
+	kfree(client);
+}
+
+void i915_drm_clients_fini(struct i915_drm_clients *clients)
+{
+	GEM_BUG_ON(!xa_empty(&clients->xarray));
+	xa_destroy(&clients->xarray);
+}
+
+#ifdef CONFIG_PROC_FS
+static const char * const uabi_class_names[] = {
+	[I915_ENGINE_CLASS_RENDER] = "render",
+	[I915_ENGINE_CLASS_COPY] = "copy",
+	[I915_ENGINE_CLASS_VIDEO] = "video",
+	[I915_ENGINE_CLASS_VIDEO_ENHANCE] = "video-enhance",
+	[I915_ENGINE_CLASS_COMPUTE] = "compute",
+};
+
+static u64 busy_add(struct i915_gem_context *ctx, unsigned int class)
+{
+	struct i915_gem_engines_iter it;
+	struct intel_context *ce;
+	u64 total = 0;
+
+	for_each_gem_engine(ce, rcu_dereference(ctx->engines), it) {
+		if (ce->engine->uabi_class != class)
+			continue;
+
+		total += intel_context_get_total_runtime_ns(ce);
+	}
+
+	return total;
+}
+
+static void
+show_client_class(struct seq_file *m,
+		  struct i915_drm_client *client,
+		  unsigned int class)
+{
+	const struct list_head *list = &client->ctx_list;
+	u64 total = atomic64_read(&client->past_runtime[class]);
+	const unsigned int capacity =
+		client->clients->i915->engine_uabi_class_count[class];
+	struct i915_gem_context *ctx;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(ctx, list, client_link)
+		total += busy_add(ctx, class);
+	rcu_read_unlock();
+
+	if (capacity)
+		seq_printf(m, "drm-engine-%s:\t%llu ns\n",
+			   uabi_class_names[class], total);
+
+	if (capacity > 1)
+		seq_printf(m, "drm-engine-capacity-%s:\t%u\n",
+			   uabi_class_names[class],
+			   capacity);
+}
+
+void i915_drm_client_fdinfo(struct seq_file *m, struct file *f)
+{
+	struct drm_file *file = f->private_data;
+	struct drm_i915_file_private *file_priv = file->driver_priv;
+	struct drm_i915_private *i915 = file_priv->dev_priv;
+	struct i915_drm_client *client = file_priv->client;
+	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
+	unsigned int i;
+
+	/*
+	 * ******************************************************************
+	 * For text output format description please see drm-usage-stats.rst!
+	 * ******************************************************************
+	 */
+
+	seq_printf(m, "drm-driver:\t%s\n", i915->drm.driver->name);
+	seq_printf(m, "drm-pdev:\t%04x:%02x:%02x.%d\n",
+		   pci_domain_nr(pdev->bus), pdev->bus->number,
+		   PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
+	seq_printf(m, "drm-client-id:\t%u\n", client->id);
+
+	/*
+	 * Temporarily skip showing client engine information with GuC submission till
+	 * fetching engine busyness is implemented in the GuC submission backend
+	 */
+	if (GRAPHICS_VER(i915) < 8 || intel_uc_uses_guc_submission(&i915->gt0.uc))
+		return;
+
+	for (i = 0; i < ARRAY_SIZE(uabi_class_names); i++)
+		show_client_class(m, client, i);
+}
+#endif