[PATCH 2/8] drm/i915: Track buffer objects belonging to clients
Tvrtko Ursulin
tvrtko.ursulin at linux.intel.com
Fri Jun 9 12:11:37 UTC 2023
From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
In order to show per client memory usage lets start tracking which
objects belong to which clients.
We start with objects explicitly created by object creation UAPI and
track it on a new per client lists, protected by a new per client lock.
In order for delayed destruction (post client exit), we make tracked
objects hold references to the owning client.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
drivers/gpu/drm/i915/gem/i915_gem_create.c | 32 +++++++++++++--
drivers/gpu/drm/i915/gem/i915_gem_object.c | 6 +++
.../gpu/drm/i915/gem/i915_gem_object_types.h | 12 ++++++
drivers/gpu/drm/i915/i915_drm_client.c | 39 ++++++++++++++++++-
drivers/gpu/drm/i915/i915_drm_client.h | 36 ++++++++++++++++-
drivers/gpu/drm/i915/i915_gem.c | 2 +-
6 files changed, 121 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_create.c b/drivers/gpu/drm/i915/gem/i915_gem_create.c
index d24c0ce8805c..4f1957638207 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_create.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_create.c
@@ -11,6 +11,7 @@
#include "gem/i915_gem_region.h"
#include "pxp/intel_pxp.h"
+#include "i915_drm_client.h"
#include "i915_drv.h"
#include "i915_gem_create.h"
#include "i915_trace.h"
@@ -164,6 +165,14 @@ __i915_gem_object_create_user(struct drm_i915_private *i915, u64 size,
n_placements, 0);
}
+static void add_file_obj(struct drm_file *file,
+ struct drm_i915_gem_object *obj)
+{
+ struct drm_i915_file_private *fpriv = file->driver_priv;
+
+ i915_drm_client_add_object(fpriv->client, obj);
+}
+
int
i915_gem_dumb_create(struct drm_file *file,
struct drm_device *dev,
@@ -174,6 +183,7 @@ i915_gem_dumb_create(struct drm_file *file,
enum intel_memory_type mem_type;
int cpp = DIV_ROUND_UP(args->bpp, 8);
u32 format;
+ int ret;
switch (cpp) {
case 1:
@@ -212,7 +222,12 @@ i915_gem_dumb_create(struct drm_file *file,
if (IS_ERR(obj))
return PTR_ERR(obj);
- return i915_gem_publish(obj, file, &args->size, &args->handle);
+ ret = i915_gem_publish(obj, file, &args->size, &args->handle);
+
+ if (!ret)
+ add_file_obj(file, obj);
+
+ return ret;
}
/**
@@ -229,6 +244,7 @@ i915_gem_create_ioctl(struct drm_device *dev, void *data,
struct drm_i915_gem_create *args = data;
struct drm_i915_gem_object *obj;
struct intel_memory_region *mr;
+ int ret;
mr = intel_memory_region_by_type(i915, INTEL_MEMORY_SYSTEM);
@@ -236,7 +252,12 @@ i915_gem_create_ioctl(struct drm_device *dev, void *data,
if (IS_ERR(obj))
return PTR_ERR(obj);
- return i915_gem_publish(obj, file, &args->size, &args->handle);
+ ret = i915_gem_publish(obj, file, &args->size, &args->handle);
+
+ if (!ret)
+ add_file_obj(file, obj);
+
+ return ret;
}
struct create_ext {
@@ -494,5 +515,10 @@ i915_gem_create_ext_ioctl(struct drm_device *dev, void *data,
obj->pat_set_by_user = true;
}
- return i915_gem_publish(obj, file, &args->size, &args->handle);
+ ret = i915_gem_publish(obj, file, &args->size, &args->handle);
+
+ if (!ret)
+ add_file_obj(file, obj);
+
+ return ret;
}
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c
index 97ac6fb37958..46de9b1b3f1d 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
@@ -105,6 +105,10 @@ void i915_gem_object_init(struct drm_i915_gem_object *obj,
INIT_LIST_HEAD(&obj->mm.link);
+#ifdef CONFIG_PROC_FS
+ INIT_LIST_HEAD(&obj->client_link);
+#endif
+
INIT_LIST_HEAD(&obj->lut_list);
spin_lock_init(&obj->lut_lock);
@@ -441,6 +445,8 @@ static void i915_gem_free_object(struct drm_gem_object *gem_obj)
GEM_BUG_ON(i915_gem_object_is_framebuffer(obj));
+ i915_drm_client_remove_object(obj);
+
/*
* Before we free the object, make sure any pure RCU-only
* read-side critical sections are complete, e.g.
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
index e72c57716bee..8de2b91b3edf 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
@@ -300,6 +300,18 @@ struct drm_i915_gem_object {
*/
struct i915_address_space *shares_resv_from;
+#ifdef CONFIG_PROC_FS
+ /**
+ * @client: @i915_drm_client which created the object
+ */
+ struct i915_drm_client *client;
+
+ /**
+ * @client_link: Link into @i915_drm_client.objects_list
+ */
+ struct list_head client_link;
+#endif
+
union {
struct rcu_head rcu;
struct llist_node freed;
diff --git a/drivers/gpu/drm/i915/i915_drm_client.c b/drivers/gpu/drm/i915/i915_drm_client.c
index 2a44b3876cb5..b0b35bcdd2b3 100644
--- a/drivers/gpu/drm/i915/i915_drm_client.c
+++ b/drivers/gpu/drm/i915/i915_drm_client.c
@@ -17,7 +17,8 @@
#include "i915_gem.h"
#include "i915_utils.h"
-struct i915_drm_client *i915_drm_client_alloc(void)
+struct i915_drm_client *
+i915_drm_client_alloc(struct drm_i915_file_private *fpriv)
{
struct i915_drm_client *client;
@@ -28,6 +29,12 @@ struct i915_drm_client *i915_drm_client_alloc(void)
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);
+
+ client->fpriv = fpriv;
+#endif
return client;
}
@@ -108,4 +115,34 @@ void i915_drm_client_fdinfo(struct drm_printer *p, struct drm_file *file)
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(&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 || list_empty(&obj->client_link))
+ return;
+
+ spin_lock_irqsave(&client->objects_lock, flags);
+ list_del(&obj->client_link);
+ spin_unlock_irqrestore(&client->objects_lock, flags);
+
+ i915_drm_client_put(client);
+}
#endif
diff --git a/drivers/gpu/drm/i915/i915_drm_client.h b/drivers/gpu/drm/i915/i915_drm_client.h
index 4c18b99e10a4..dfeaaf204c00 100644
--- a/drivers/gpu/drm/i915/i915_drm_client.h
+++ b/drivers/gpu/drm/i915/i915_drm_client.h
@@ -12,6 +12,9 @@
#include <uapi/drm/i915_drm.h>
+#include "i915_file_private.h"
+#include "gem/i915_gem_object_types.h"
+
#define I915_LAST_UABI_ENGINE_CLASS I915_ENGINE_CLASS_COMPUTE
struct drm_file;
@@ -25,6 +28,22 @@ struct i915_drm_client {
spinlock_t ctx_lock; /* For add/remove from ctx_list. */
struct list_head ctx_list; /* List of contexts belonging to client. */
+#ifdef CONFIG_PROC_FS
+ struct drm_i915_file_private *fpriv;
+
+ /**
+ * @objects_lock: lock protecting @objects_list
+ */
+ spinlock_t objects_lock;
+
+ /**
+ * @objects_list: list of objects created by this client
+ *
+ * Protected by @objects_lock.
+ */
+ struct list_head objects_list;
+#endif
+
/**
* @past_runtime: Accumulation of pphwsp runtimes from closed contexts.
*/
@@ -45,10 +64,25 @@ 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_alloc(void);
+struct i915_drm_client *i915_drm_client_alloc(struct drm_i915_file_private *fpriv);
#ifdef CONFIG_PROC_FS
void i915_drm_client_fdinfo(struct drm_printer *p, struct drm_file *file);
+
+void i915_drm_client_add_object(struct i915_drm_client *client,
+ struct drm_i915_gem_object *obj);
+void i915_drm_client_remove_object(struct drm_i915_gem_object *obj);
+#else
+static inline void i915_drm_client_add_object(struct i915_drm_client *client,
+ struct drm_i915_gem_object *obj)
+{
+
+}
+
+static inline void i915_drm_client_remove_object(struct drm_i915_gem_object *obj)
+{
+
+}
#endif
#endif /* !__I915_DRM_CLIENT_H__ */
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 1f65bb33dd21..7ae42f746cc2 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1325,7 +1325,7 @@ int i915_gem_open(struct drm_i915_private *i915, struct drm_file *file)
if (!file_priv)
goto err_alloc;
- client = i915_drm_client_alloc();
+ client = i915_drm_client_alloc(file_priv);
if (!client)
goto err_client;
--
2.39.2
More information about the dri-devel
mailing list