[PATCH 4/5] drm/i915: Account ring buffer and context state storage

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursu...@intel.com>

Account ring buffers and logical context space against the owning client
memory usage stats.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_context.c | 13 +++++++++++++
 drivers/gpu/drm/i915/i915_drm_client.c  | 10 ++++++++++
 drivers/gpu/drm/i915/i915_drm_client.h  |  8 ++++++++
 3 files changed, 31 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_context.c 
b/drivers/gpu/drm/i915/gt/intel_context.c
index a53b26178f0a..8a395b9201e9 100644
--- a/drivers/gpu/drm/i915/gt/intel_context.c
+++ b/drivers/gpu/drm/i915/gt/intel_context.c
@@ -6,6 +6,7 @@
 #include "gem/i915_gem_context.h"
 #include "gem/i915_gem_pm.h"
 
+#include "i915_drm_client.h"
 #include "i915_drv.h"
 #include "i915_trace.h"
 
@@ -50,6 +51,7 @@ intel_context_create(struct intel_engine_cs *engine)
 
 int intel_context_alloc_state(struct intel_context *ce)
 {
+       struct i915_gem_context *ctx;
        int err = 0;
 
        if (mutex_lock_interruptible(&ce->pin_mutex))
@@ -66,6 +68,17 @@ int intel_context_alloc_state(struct intel_context *ce)
                        goto unlock;
 
                set_bit(CONTEXT_ALLOC_BIT, &ce->flags);
+
+               rcu_read_lock();
+               ctx = rcu_dereference(ce->gem_context);
+               if (ctx && !kref_get_unless_zero(&ctx->ref))
+                       ctx = NULL;
+               rcu_read_unlock();
+               if (ctx) {
+                       if (ctx->client)
+                               i915_drm_client_add_context(ctx->client, ce);
+                       i915_gem_context_put(ctx);
+               }
        }
 
 unlock:
diff --git a/drivers/gpu/drm/i915/i915_drm_client.c 
b/drivers/gpu/drm/i915/i915_drm_client.c
index 2e5e69edc0f9..ffccb6239789 100644
--- a/drivers/gpu/drm/i915/i915_drm_client.c
+++ b/drivers/gpu/drm/i915/i915_drm_client.c
@@ -144,4 +144,14 @@ bool i915_drm_client_remove_object(struct 
drm_i915_gem_object *obj)
 
        return true;
 }
+
+void i915_drm_client_add_context(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
diff --git a/drivers/gpu/drm/i915/i915_drm_client.h 
b/drivers/gpu/drm/i915/i915_drm_client.h
index 5f58fdf7dcb8..39616b10a51f 100644
--- a/drivers/gpu/drm/i915/i915_drm_client.h
+++ b/drivers/gpu/drm/i915/i915_drm_client.h
@@ -14,6 +14,7 @@
 
 #include "i915_file_private.h"
 #include "gem/i915_gem_object_types.h"
+#include "gt/intel_context_types.h"
 
 #define I915_LAST_UABI_ENGINE_CLASS I915_ENGINE_CLASS_COMPUTE
 
@@ -70,6 +71,8 @@ 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);
 bool i915_drm_client_remove_object(struct drm_i915_gem_object *obj);
+void i915_drm_client_add_context(struct i915_drm_client *client,
+                                struct intel_context *ce);
 #else
 static inline void i915_drm_client_add_object(struct i915_drm_client *client,
                                              struct drm_i915_gem_object *obj)
@@ -79,6 +82,11 @@ static inline void i915_drm_client_add_object(struct 
i915_drm_client *client,
 static inline bool i915_drm_client_remove_object(struct drm_i915_gem_object 
*obj)
 {
 }
+
+static inline void i915_drm_client_add_context(struct i915_drm_client *client,
+                                              struct intel_context *ce)
+{
+}
 #endif
 
 #endif /* !__I915_DRM_CLIENT_H__ */
-- 
2.39.2