[PATCH 32/32] drm/i915: Pull VM lists under the VM mutex.
Chris Wilson
chris at chris-wilson.co.uk
Tue Jun 26 13:09:43 UTC 2018
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_gem.c | 14 ++++++++------
drivers/gpu/drm/i915/i915_gem_gtt.c | 8 +++++++-
drivers/gpu/drm/i915/i915_gem_stolen.c | 3 +++
drivers/gpu/drm/i915/i915_vma.c | 12 +++++++++++-
drivers/gpu/drm/i915/selftests/i915_gem_evict.c | 5 ++++-
drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 3 +++
6 files changed, 36 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 8f5f11c9b72c..4b2f4325d3be 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -246,18 +246,19 @@ int
i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
struct drm_file *file)
{
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct i915_ggtt *ggtt = &dev_priv->ggtt;
+ struct i915_ggtt *ggtt = &to_i915(dev)->ggtt;
struct drm_i915_gem_get_aperture *args = data;
struct i915_vma *vma;
u64 pinned;
+ mutex_lock(&ggtt->vm.mutex);
+
pinned = ggtt->vm.reserved;
- mutex_lock(&dev->struct_mutex);
list_for_each_entry(vma, &ggtt->vm.bound_list, vm_link)
if (i915_vma_is_pinned(vma))
pinned += vma->node.size;
- mutex_unlock(&dev->struct_mutex);
+
+ mutex_unlock(&ggtt->vm.mutex);
args->aper_size = ggtt->vm.total;
args->aper_available_size = args->aper_size - pinned;
@@ -1673,20 +1674,21 @@ i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
static void i915_gem_object_bump_inactive_ggtt(struct drm_i915_gem_object *obj)
{
- struct drm_i915_private *i915;
+ struct drm_i915_private *i915 = to_i915(obj->base.dev);
struct list_head *list;
struct i915_vma *vma;
GEM_BUG_ON(!i915_gem_object_has_pinned_pages(obj));
+ mutex_lock(&i915->ggtt.vm.mutex);
for_each_ggtt_vma(vma, obj) {
if (!drm_mm_node_allocated(&vma->node))
continue;
list_move_tail(&vma->vm_link, &vma->vm->bound_list);
}
+ mutex_unlock(&i915->ggtt.vm.mutex);
- i915 = to_i915(obj->base.dev);
spin_lock(&i915->mm.obj_lock);
list = obj->bind_count ? &i915->mm.bound_list : &i915->mm.unbound_list;
list_move_tail(&obj->mm.link, list);
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 82814c105625..983c759d96fe 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -2018,7 +2018,10 @@ static struct i915_vma *pd_vma_create(struct gen6_hw_ppgtt *ppgtt, int size)
vma->ggtt_view.type = I915_GGTT_VIEW_ROTATED; /* prevent fencing */
INIT_LIST_HEAD(&vma->obj_link);
+
+ mutex_lock(&vma->vm->mutex);
list_add(&vma->vm_link, &vma->vm->unbound_list);
+ mutex_unlock(&vma->vm->mutex);
return vma;
}
@@ -3646,9 +3649,10 @@ void i915_gem_restore_gtt_mappings(struct drm_i915_private *dev_priv)
i915_check_and_clear_faults(dev_priv);
+ mutex_lock(&ggtt->vm.mutex);
+
/* First fill our portion of the GTT with scratch pages */
ggtt->vm.clear_range(&ggtt->vm, 0, ggtt->vm.total);
-
ggtt->vm.closed = true; /* skip rewriting PTE on VMA unbind */
/* clflush objects bound into the GGTT and rebind them. */
@@ -3671,6 +3675,8 @@ void i915_gem_restore_gtt_mappings(struct drm_i915_private *dev_priv)
ggtt->vm.closed = false;
i915_ggtt_invalidate(dev_priv);
+ mutex_unlock(&ggtt->vm.mutex);
+
if (INTEL_GEN(dev_priv) >= 8) {
struct intel_ppat *ppat = &dev_priv->ppat;
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
index d2409477a80a..b805abcd755b 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -666,7 +666,10 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv
vma->pages = obj->mm.pages;
vma->flags |= I915_VMA_GLOBAL_BIND;
__i915_vma_set_map_and_fenceable(vma);
+
+ mutex_lock(&ggtt->vm.mutex);
list_move_tail(&vma->vm_link, &ggtt->vm.bound_list);
+ mutex_unlock(&ggtt->vm.mutex);
spin_lock(&dev_priv->mm.obj_lock);
list_move_tail(&obj->mm.link, &dev_priv->mm.bound_list);
diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
index 20a524e1876e..b3a747910857 100644
--- a/drivers/gpu/drm/i915/i915_vma.c
+++ b/drivers/gpu/drm/i915/i915_vma.c
@@ -183,7 +183,10 @@ vma_create(struct drm_i915_gem_object *obj,
}
rb_link_node(&vma->obj_node, rb, p);
rb_insert_color(&vma->obj_node, &obj->vma_tree);
+
+ mutex_lock(&vm->mutex);
list_add(&vma->vm_link, &vm->unbound_list);
+ mutex_unlock(&vm->mutex);
return vma;
@@ -623,7 +626,9 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
GEM_BUG_ON(!i915_gem_valid_gtt_space(vma, cache_level));
+ mutex_lock(&vma->vm->mutex);
list_move_tail(&vma->vm_link, &vma->vm->bound_list);
+ mutex_unlock(&vma->vm->mutex);
if (vma->obj) {
struct drm_i915_gem_object *obj = vma->obj;
@@ -656,8 +661,10 @@ i915_vma_remove(struct i915_vma *vma)
vma->ops->clear_pages(vma);
+ mutex_lock(&vma->vm->mutex);
drm_mm_remove_node(&vma->node);
list_move_tail(&vma->vm_link, &vma->vm->unbound_list);
+ mutex_unlock(&vma->vm->mutex);
/*
* Since the unbound list is global, only move to that list if
@@ -770,10 +777,13 @@ static void __i915_vma_destroy(struct i915_vma *vma)
GEM_BUG_ON(i915_gem_active_isset(&vma->last_fence));
list_del(&vma->obj_link);
- list_del(&vma->vm_link);
if (vma->obj)
rb_erase(&vma->obj_node, &vma->obj->vma_tree);
+ mutex_lock(&vma->vm->mutex);
+ list_del(&vma->vm_link);
+ mutex_unlock(&vma->vm->mutex);
+
if (!i915_vma_is_ggtt(vma))
i915_ppgtt_put(i915_vm_to_ppgtt(vma->vm));
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
index 92f7c484e2b6..133bb2a62d20 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
@@ -67,10 +67,13 @@ static int populate_ggtt(struct drm_i915_private *i915)
static void unpin_ggtt(struct drm_i915_private *i915)
{
+ struct i915_ggtt *ggtt = &i915->ggtt;
struct i915_vma *vma;
- list_for_each_entry(vma, &i915->ggtt.vm.bound_list, vm_link)
+ mutex_lock(&ggtt->vm.mutex);
+ list_for_each_entry(vma, &ggtt->vm.bound_list, vm_link)
i915_vma_unpin(vma);
+ mutex_unlock(&ggtt->vm.mutex);
}
static void cleanup_objects(struct drm_i915_private *i915)
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
index 11b480286e23..da44c0f19a76 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
@@ -1206,7 +1206,10 @@ static void track_vma_bind(struct i915_vma *vma)
__i915_gem_object_pin_pages(obj);
vma->pages = obj->mm.pages;
+
+ mutex_lock(&vma->vm->mutex);
list_move_tail(&vma->vm_link, &vma->vm->bound_list);
+ mutex_unlock(&vma->vm->mutex);
}
static int exercise_mock(struct drm_i915_private *i915,
--
2.18.0
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