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// 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"
struct i915_drm_client *i915_drm_client_alloc(void)
{
struct i915_drm_client *client;
client = kzalloc(sizeof(*client), GFP_KERNEL);
if (!client)
return NULL;
kref_init(&client->kref);
spin_lock_init(&client->ctx_lock);
INIT_LIST_HEAD(&client->ctx_list);
#ifdef CONFIG_PROC_FS
spin_lock_init(&client->objects_lock);
INIT_LIST_HEAD(&client->objects_list);
#endif
return client;
}
void __i915_drm_client_free(struct kref *kref)
{
struct i915_drm_client *client =
container_of(kref, typeof(*client), kref);
kfree(client);
}
#ifdef CONFIG_PROC_FS
static void
obj_meminfo(struct drm_i915_gem_object *obj,
struct drm_memory_stats stats[INTEL_REGION_UNKNOWN])
{
const enum intel_region_id id = obj->mm.region ?
obj->mm.region->id : INTEL_REGION_SMEM;
const u64 sz = obj->base.size;
if (obj->base.handle_count > 1)
stats[id].shared += sz;
else
stats[id].private += sz;
if (i915_gem_object_has_pages(obj)) {
stats[id].resident += sz;
if (!dma_resv_test_signaled(obj->base.resv,
DMA_RESV_USAGE_BOOKKEEP))
stats[id].active += sz;
else if (i915_gem_object_is_shrinkable(obj) &&
obj->mm.madv == I915_MADV_DONTNEED)
stats[id].purgeable += sz;
}
}
static void show_meminfo(struct drm_printer *p, struct drm_file *file)
{
struct drm_memory_stats stats[INTEL_REGION_UNKNOWN] = {};
struct drm_i915_file_private *fpriv = file->driver_priv;
struct i915_drm_client *client = fpriv->client;
struct drm_i915_private *i915 = fpriv->i915;
struct drm_i915_gem_object *obj;
struct intel_memory_region *mr;
struct list_head __rcu *pos;
unsigned int id;
/* Public objects. */
spin_lock(&file->table_lock);
idr_for_each_entry(&file->object_idr, obj, id)
obj_meminfo(obj, stats);
spin_unlock(&file->table_lock);
/* Internal objects. */
rcu_read_lock();
list_for_each_rcu(pos, &client->objects_list) {
obj = i915_gem_object_get_rcu(list_entry(pos, typeof(*obj),
client_link));
if (!obj)
continue;
obj_meminfo(obj, stats);
i915_gem_object_put(obj);
}
rcu_read_unlock();
for_each_memory_region(mr, i915, id)
drm_print_memory_stats(p,
&stats[id],
DRM_GEM_OBJECT_RESIDENT |
DRM_GEM_OBJECT_PURGEABLE,
mr->uabi_name);
}
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 drm_printer *p,
struct drm_i915_private *i915,
struct i915_drm_client *client,
unsigned int class)
{
const unsigned int capacity = i915->engine_uabi_class_count[class];
u64 total = atomic64_read(&client->past_runtime[class]);
struct i915_gem_context *ctx;
rcu_read_lock();
list_for_each_entry_rcu(ctx, &client->ctx_list, client_link)
total += busy_add(ctx, class);
rcu_read_unlock();
if (capacity)
drm_printf(p, "drm-engine-%s:\t%llu ns\n",
uabi_class_names[class], total);
if (capacity > 1)
drm_printf(p, "drm-engine-capacity-%s:\t%u\n",
uabi_class_names[class],
capacity);
}
void i915_drm_client_fdinfo(struct drm_printer *p, struct drm_file *file)
{
struct drm_i915_file_private *file_priv = file->driver_priv;
struct drm_i915_private *i915 = file_priv->i915;
unsigned int i;
/*
* ******************************************************************
* For text output format description please see drm-usage-stats.rst!
* ******************************************************************
*/
show_meminfo(p, file);
if (GRAPHICS_VER(i915) < 8)
return;
for (i = 0; i < ARRAY_SIZE(uabi_class_names); i++)
show_client_class(p, i915, file_priv->client, i);
}
void i915_drm_client_add_object(struct i915_drm_client *client,
struct drm_i915_gem_object *obj)
{
unsigned long flags;
GEM_WARN_ON(obj->client);
GEM_WARN_ON(!list_empty(&obj->client_link));
spin_lock_irqsave(&client->objects_lock, flags);
obj->client = i915_drm_client_get(client);
list_add_tail_rcu(&obj->client_link, &client->objects_list);
spin_unlock_irqrestore(&client->objects_lock, flags);
}
void i915_drm_client_remove_object(struct drm_i915_gem_object *obj)
{
struct i915_drm_client *client = fetch_and_zero(&obj->client);
unsigned long flags;
/* Object may not be associated with a client. */
if (!client)
return;
spin_lock_irqsave(&client->objects_lock, flags);
list_del_rcu(&obj->client_link);
spin_unlock_irqrestore(&client->objects_lock, flags);
i915_drm_client_put(client);
}
void i915_drm_client_add_context_objects(struct i915_drm_client *client,
struct intel_context *ce)
{
if (ce->state)
i915_drm_client_add_object(client, ce->state->obj);
if (ce->ring != ce->engine->legacy.ring && ce->ring->vma)
i915_drm_client_add_object(client, ce->ring->vma->obj);
}
#endif
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