diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gem')
-rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c | 37 | ||||
-rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_mman.c | 129 | ||||
-rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_object.c | 18 | ||||
-rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_object.h | 12 | ||||
-rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_object_types.h | 6 |
5 files changed, 142 insertions, 60 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c index d5a0f5ae4a8b..60c984e10c4a 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c @@ -1981,9 +1981,20 @@ static int __eb_parse(struct dma_fence_work *work) pw->trampoline); } +static void __eb_parse_release(struct dma_fence_work *work) +{ + struct eb_parse_work *pw = container_of(work, typeof(*pw), base); + + if (pw->trampoline) + i915_active_release(&pw->trampoline->active); + i915_active_release(&pw->shadow->active); + i915_active_release(&pw->batch->active); +} + static const struct dma_fence_work_ops eb_parse_ops = { .name = "eb_parse", .work = __eb_parse, + .release = __eb_parse_release, }; static int eb_parse_pipeline(struct i915_execbuffer *eb, @@ -1997,6 +2008,20 @@ static int eb_parse_pipeline(struct i915_execbuffer *eb, if (!pw) return -ENOMEM; + err = i915_active_acquire(&eb->batch->active); + if (err) + goto err_free; + + err = i915_active_acquire(&shadow->active); + if (err) + goto err_batch; + + if (trampoline) { + err = i915_active_acquire(&trampoline->active); + if (err) + goto err_shadow; + } + dma_fence_work_init(&pw->base, &eb_parse_ops); pw->engine = eb->engine; @@ -2006,7 +2031,9 @@ static int eb_parse_pipeline(struct i915_execbuffer *eb, pw->shadow = shadow; pw->trampoline = trampoline; - dma_resv_lock(pw->batch->resv, NULL); + err = dma_resv_lock_interruptible(pw->batch->resv, NULL); + if (err) + goto err_trampoline; err = dma_resv_reserve_shared(pw->batch->resv, 1); if (err) @@ -2034,6 +2061,14 @@ static int eb_parse_pipeline(struct i915_execbuffer *eb, err_batch_unlock: dma_resv_unlock(pw->batch->resv); +err_trampoline: + if (trampoline) + i915_active_release(&trampoline->active); +err_shadow: + i915_active_release(&shadow->active); +err_batch: + i915_active_release(&eb->batch->active); +err_free: kfree(pw); return err; } diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c index b9fdac2f9003..0b6a442108de 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c @@ -455,10 +455,11 @@ out: void i915_gem_object_release_mmap_offset(struct drm_i915_gem_object *obj) { - struct i915_mmap_offset *mmo; + struct i915_mmap_offset *mmo, *mn; spin_lock(&obj->mmo.lock); - list_for_each_entry(mmo, &obj->mmo.offsets, offset) { + rbtree_postorder_for_each_entry_safe(mmo, mn, + &obj->mmo.offsets, offset) { /* * vma_node_unmap for GTT mmaps handled already in * __i915_gem_object_release_mmap_gtt @@ -488,6 +489,67 @@ void i915_gem_object_release_mmap(struct drm_i915_gem_object *obj) } static struct i915_mmap_offset * +lookup_mmo(struct drm_i915_gem_object *obj, + enum i915_mmap_type mmap_type) +{ + struct rb_node *rb; + + spin_lock(&obj->mmo.lock); + rb = obj->mmo.offsets.rb_node; + while (rb) { + struct i915_mmap_offset *mmo = + rb_entry(rb, typeof(*mmo), offset); + + if (mmo->mmap_type == mmap_type) { + spin_unlock(&obj->mmo.lock); + return mmo; + } + + if (mmo->mmap_type < mmap_type) + rb = rb->rb_right; + else + rb = rb->rb_left; + } + spin_unlock(&obj->mmo.lock); + + return NULL; +} + +static struct i915_mmap_offset * +insert_mmo(struct drm_i915_gem_object *obj, struct i915_mmap_offset *mmo) +{ + struct rb_node *rb, **p; + + spin_lock(&obj->mmo.lock); + rb = NULL; + p = &obj->mmo.offsets.rb_node; + while (*p) { + struct i915_mmap_offset *pos; + + rb = *p; + pos = rb_entry(rb, typeof(*pos), offset); + + if (pos->mmap_type == mmo->mmap_type) { + spin_unlock(&obj->mmo.lock); + drm_vma_offset_remove(obj->base.dev->vma_offset_manager, + &mmo->vma_node); + kfree(mmo); + return pos; + } + + if (pos->mmap_type < mmo->mmap_type) + p = &rb->rb_right; + else + p = &rb->rb_left; + } + rb_link_node(&mmo->offset, rb, p); + rb_insert_color(&mmo->offset, &obj->mmo.offsets); + spin_unlock(&obj->mmo.lock); + + return mmo; +} + +static struct i915_mmap_offset * mmap_offset_attach(struct drm_i915_gem_object *obj, enum i915_mmap_type mmap_type, struct drm_file *file) @@ -496,20 +558,22 @@ mmap_offset_attach(struct drm_i915_gem_object *obj, struct i915_mmap_offset *mmo; int err; + mmo = lookup_mmo(obj, mmap_type); + if (mmo) + goto out; + mmo = kmalloc(sizeof(*mmo), GFP_KERNEL); if (!mmo) return ERR_PTR(-ENOMEM); mmo->obj = obj; - mmo->dev = obj->base.dev; - mmo->file = file; mmo->mmap_type = mmap_type; drm_vma_node_reset(&mmo->vma_node); - err = drm_vma_offset_add(mmo->dev->vma_offset_manager, &mmo->vma_node, - obj->base.size / PAGE_SIZE); + err = drm_vma_offset_add(obj->base.dev->vma_offset_manager, + &mmo->vma_node, obj->base.size / PAGE_SIZE); if (likely(!err)) - goto out; + goto insert; /* Attempt to reap some mmap space from dead objects */ err = intel_gt_retire_requests_timeout(&i915->gt, MAX_SCHEDULE_TIMEOUT); @@ -517,19 +581,17 @@ mmap_offset_attach(struct drm_i915_gem_object *obj, goto err; i915_gem_drain_freed_objects(i915); - err = drm_vma_offset_add(mmo->dev->vma_offset_manager, &mmo->vma_node, - obj->base.size / PAGE_SIZE); + err = drm_vma_offset_add(obj->base.dev->vma_offset_manager, + &mmo->vma_node, obj->base.size / PAGE_SIZE); if (err) goto err; +insert: + mmo = insert_mmo(obj, mmo); + GEM_BUG_ON(lookup_mmo(obj, mmap_type) != mmo); out: if (file) drm_vma_node_allow(&mmo->vma_node, file); - - spin_lock(&obj->mmo.lock); - list_add(&mmo->offset, &obj->mmo.offsets); - spin_unlock(&obj->mmo.lock); - return mmo; err: @@ -745,60 +807,43 @@ int i915_gem_mmap(struct file *filp, struct vm_area_struct *vma) struct drm_vma_offset_node *node; struct drm_file *priv = filp->private_data; struct drm_device *dev = priv->minor->dev; + struct drm_i915_gem_object *obj = NULL; struct i915_mmap_offset *mmo = NULL; - struct drm_gem_object *obj = NULL; struct file *anon; if (drm_dev_is_unplugged(dev)) return -ENODEV; + rcu_read_lock(); drm_vma_offset_lock_lookup(dev->vma_offset_manager); node = drm_vma_offset_exact_lookup_locked(dev->vma_offset_manager, vma->vm_pgoff, vma_pages(vma)); - if (likely(node)) { - mmo = container_of(node, struct i915_mmap_offset, - vma_node); - /* - * In our dependency chain, the drm_vma_offset_node - * depends on the validity of the mmo, which depends on - * the gem object. However the only reference we have - * at this point is the mmo (as the parent of the node). - * Try to check if the gem object was at least cleared. - */ - if (!mmo || !mmo->obj) { - drm_vma_offset_unlock_lookup(dev->vma_offset_manager); - return -EINVAL; - } + if (node && drm_vma_node_is_allowed(node, priv)) { /* * Skip 0-refcnted objects as it is in the process of being * destroyed and will be invalid when the vma manager lock * is released. */ - obj = &mmo->obj->base; - if (!kref_get_unless_zero(&obj->refcount)) - obj = NULL; + mmo = container_of(node, struct i915_mmap_offset, vma_node); + obj = i915_gem_object_get_rcu(mmo->obj); } drm_vma_offset_unlock_lookup(dev->vma_offset_manager); + rcu_read_unlock(); if (!obj) - return -EINVAL; - - if (!drm_vma_node_is_allowed(node, priv)) { - drm_gem_object_put_unlocked(obj); - return -EACCES; - } + return node ? -EACCES : -EINVAL; - if (i915_gem_object_is_readonly(to_intel_bo(obj))) { + if (i915_gem_object_is_readonly(obj)) { if (vma->vm_flags & VM_WRITE) { - drm_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); return -EINVAL; } vma->vm_flags &= ~VM_MAYWRITE; } - anon = mmap_singleton(to_i915(obj->dev)); + anon = mmap_singleton(to_i915(dev)); if (IS_ERR(anon)) { - drm_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); return PTR_ERR(anon); } diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c index 46bacc82ddc4..35985218bd85 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c @@ -63,7 +63,7 @@ void i915_gem_object_init(struct drm_i915_gem_object *obj, INIT_LIST_HEAD(&obj->lut_list); spin_lock_init(&obj->mmo.lock); - INIT_LIST_HEAD(&obj->mmo.offsets); + obj->mmo.offsets = RB_ROOT; init_rcu_head(&obj->rcu); @@ -100,8 +100,8 @@ void i915_gem_close_object(struct drm_gem_object *gem, struct drm_file *file) { struct drm_i915_gem_object *obj = to_intel_bo(gem); struct drm_i915_file_private *fpriv = file->driver_priv; + struct i915_mmap_offset *mmo, *mn; struct i915_lut_handle *lut, *ln; - struct i915_mmap_offset *mmo; LIST_HEAD(close); i915_gem_object_lock(obj); @@ -117,14 +117,8 @@ void i915_gem_close_object(struct drm_gem_object *gem, struct drm_file *file) i915_gem_object_unlock(obj); spin_lock(&obj->mmo.lock); - list_for_each_entry(mmo, &obj->mmo.offsets, offset) { - if (mmo->file != file) - continue; - - spin_unlock(&obj->mmo.lock); + rbtree_postorder_for_each_entry_safe(mmo, mn, &obj->mmo.offsets, offset) drm_vma_node_revoke(&mmo->vma_node, file); - spin_lock(&obj->mmo.lock); - } spin_unlock(&obj->mmo.lock); list_for_each_entry_safe(lut, ln, &close, obj_link) { @@ -203,12 +197,14 @@ static void __i915_gem_free_objects(struct drm_i915_private *i915, i915_gem_object_release_mmap(obj); - list_for_each_entry_safe(mmo, mn, &obj->mmo.offsets, offset) { + rbtree_postorder_for_each_entry_safe(mmo, mn, + &obj->mmo.offsets, + offset) { drm_vma_offset_remove(obj->base.dev->vma_offset_manager, &mmo->vma_node); kfree(mmo); } - INIT_LIST_HEAD(&obj->mmo.offsets); + obj->mmo.offsets = RB_ROOT; GEM_BUG_ON(atomic_read(&obj->bind_count)); GEM_BUG_ON(obj->userfault_count); diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h index db70a3306e59..9c86f2dea947 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h @@ -70,14 +70,22 @@ i915_gem_object_lookup_rcu(struct drm_file *file, u32 handle) } static inline struct drm_i915_gem_object * +i915_gem_object_get_rcu(struct drm_i915_gem_object *obj) +{ + if (obj && !kref_get_unless_zero(&obj->base.refcount)) + obj = NULL; + + return obj; +} + +static inline struct drm_i915_gem_object * i915_gem_object_lookup(struct drm_file *file, u32 handle) { struct drm_i915_gem_object *obj; rcu_read_lock(); obj = i915_gem_object_lookup_rcu(file, handle); - if (obj && !kref_get_unless_zero(&obj->base.refcount)) - obj = NULL; + obj = i915_gem_object_get_rcu(obj); rcu_read_unlock(); return obj; 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 88e268633fdc..f64ad77e6b1e 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h @@ -71,13 +71,11 @@ enum i915_mmap_type { }; struct i915_mmap_offset { - struct drm_device *dev; struct drm_vma_offset_node vma_node; struct drm_i915_gem_object *obj; - struct drm_file *file; enum i915_mmap_type mmap_type; - struct list_head offset; + struct rb_node offset; }; struct drm_i915_gem_object { @@ -137,7 +135,7 @@ struct drm_i915_gem_object { struct { spinlock_t lock; /* Protects access to mmo offsets */ - struct list_head offsets; + struct rb_root offsets; } mmo; I915_SELFTEST_DECLARE(struct list_head st_link); |