struct drm_i915_gem_pwrite *args,
struct drm_file *file_priv);
+static LIST_HEAD(shrink_list);
+static DEFINE_SPINLOCK(shrink_list_lock);
+
int i915_gem_do_init(struct drm_device *dev, unsigned long start,
unsigned long end)
{
/* Now bind it into the GTT if needed */
mutex_lock(&dev->struct_mutex);
if (!obj_priv->gtt_space) {
- ret = i915_gem_object_bind_to_gtt(obj, obj_priv->gtt_alignment);
+ ret = i915_gem_object_bind_to_gtt(obj, 0);
if (ret) {
mutex_unlock(&dev->struct_mutex);
return VM_FAULT_SIGBUS;
}
+ list_add_tail(&obj_priv->list, &dev_priv->mm.inactive_list);
ret = i915_gem_object_set_to_gtt_domain(obj, write);
if (ret) {
mutex_unlock(&dev->struct_mutex);
return VM_FAULT_SIGBUS;
}
-
- list_add_tail(&obj_priv->list, &dev_priv->mm.inactive_list);
}
/* Need a new fence register? */
args->offset = obj_priv->mmap_offset;
- obj_priv->gtt_alignment = i915_gem_get_gtt_alignment(obj);
-
- /* Make sure the alignment is correct for fence regs etc */
- if (obj_priv->agp_mem &&
- (obj_priv->gtt_offset & (obj_priv->gtt_alignment - 1))) {
- drm_gem_object_unreference(obj);
- mutex_unlock(&dev->struct_mutex);
- return -EINVAL;
- }
-
/*
* Pull it into the GTT so that we have a page list (makes the
* initial fault faster and any subsequent flushing possible).
*/
if (!obj_priv->agp_mem) {
- ret = i915_gem_object_bind_to_gtt(obj, obj_priv->gtt_alignment);
+ ret = i915_gem_object_bind_to_gtt(obj, 0);
if (ret) {
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);
if (obj_priv->tiling_mode != I915_TILING_NONE)
i915_gem_object_save_bit_17_swizzle(obj);
- for (i = 0; i < page_count; i++)
- if (obj_priv->pages[i] != NULL) {
- if (obj_priv->dirty)
- set_page_dirty(obj_priv->pages[i]);
- mark_page_accessed(obj_priv->pages[i]);
- page_cache_release(obj_priv->pages[i]);
- }
+ if (obj_priv->madv == I915_MADV_DONTNEED)
+ obj_priv->dirty = 0;
+
+ for (i = 0; i < page_count; i++) {
+ if (obj_priv->pages[i] == NULL)
+ break;
+
+ if (obj_priv->dirty)
+ set_page_dirty(obj_priv->pages[i]);
+
+ if (obj_priv->madv == I915_MADV_WILLNEED)
+ mark_page_accessed(obj_priv->pages[i]);
+
+ page_cache_release(obj_priv->pages[i]);
+ }
obj_priv->dirty = 0;
drm_free_large(obj_priv->pages);
}
- if (was_empty && !dev_priv->mm.suspended)
- queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ);
+ if (!dev_priv->mm.suspended) {
+ mod_timer(&dev_priv->hangcheck_timer, jiffies + DRM_I915_HANGCHECK_PERIOD);
+ if (was_empty)
+ queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ);
+ }
return seqno;
}
/**
* Returns true if seq1 is later than seq2.
*/
-static int
+bool
i915_seqno_passed(uint32_t seq1, uint32_t seq2)
{
return (int32_t)(seq1 - seq2) >= 0;
retiring_seqno = request->seqno;
if (i915_seqno_passed(seqno, retiring_seqno) ||
- dev_priv->mm.wedged) {
+ atomic_read(&dev_priv->mm.wedged)) {
i915_gem_retire_request(dev, request);
list_del(&request->list);
BUG_ON(seqno == 0);
+ if (atomic_read(&dev_priv->mm.wedged))
+ return -EIO;
+
if (!i915_seqno_passed(i915_get_gem_seqno(dev), seqno)) {
if (IS_IGDNG(dev))
ier = I915_READ(DEIER) | I915_READ(GTIER);
ret = wait_event_interruptible(dev_priv->irq_queue,
i915_seqno_passed(i915_get_gem_seqno(dev),
seqno) ||
- dev_priv->mm.wedged);
+ atomic_read(&dev_priv->mm.wedged));
i915_user_irq_put(dev);
dev_priv->mm.waiting_gem_seqno = 0;
}
- if (dev_priv->mm.wedged)
+ if (atomic_read(&dev_priv->mm.wedged))
ret = -EIO;
if (ret && ret != -ERESTARTSYS)
if (dev_priv->mm.suspended)
return -EBUSY;
+
+ if (obj_priv->madv == I915_MADV_DONTNEED) {
+ DRM_ERROR("Attempting to bind a purgeable object\n");
+ return -EINVAL;
+ }
+
if (alignment == 0)
alignment = i915_gem_get_gtt_alignment(obj);
if (alignment & (i915_gem_get_gtt_alignment(obj) - 1)) {
i915_verify_inactive(dev, __FILE__, __LINE__);
- if (dev_priv->mm.wedged) {
+ if (atomic_read(&dev_priv->mm.wedged)) {
DRM_ERROR("Execbuf while wedged\n");
mutex_unlock(&dev->struct_mutex);
ret = -EIO;
}
obj_priv = obj->driver_private;
+ if (obj_priv->madv == I915_MADV_DONTNEED) {
+ DRM_ERROR("Attempting to pin a I915_MADV_DONTNEED buffer\n");
+ drm_gem_object_unreference(obj);
+ mutex_unlock(&dev->struct_mutex);
+ return -EINVAL;
+ }
+
if (obj_priv->pin_filp != NULL && obj_priv->pin_filp != file_priv) {
DRM_ERROR("Already pinned in i915_gem_pin_ioctl(): %d\n",
args->handle);
return i915_gem_ring_throttle(dev, file_priv);
}
+int
+i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_i915_gem_madvise *args = data;
+ struct drm_gem_object *obj;
+ struct drm_i915_gem_object *obj_priv;
+
+ switch (args->madv) {
+ case I915_MADV_DONTNEED:
+ case I915_MADV_WILLNEED:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+ if (obj == NULL) {
+ DRM_ERROR("Bad handle in i915_gem_madvise_ioctl(): %d\n",
+ args->handle);
+ return -EBADF;
+ }
+
+ mutex_lock(&dev->struct_mutex);
+ obj_priv = obj->driver_private;
+
+ if (obj_priv->pin_count) {
+ drm_gem_object_unreference(obj);
+ mutex_unlock(&dev->struct_mutex);
+
+ DRM_ERROR("Attempted i915_gem_madvise_ioctl() on a pinned object\n");
+ return -EINVAL;
+ }
+
+ obj_priv->madv = args->madv;
+ args->retained = obj_priv->gtt_space != NULL;
+
+ drm_gem_object_unreference(obj);
+ mutex_unlock(&dev->struct_mutex);
+
+ return 0;
+}
+
int i915_gem_init_object(struct drm_gem_object *obj)
{
struct drm_i915_gem_object *obj_priv;
obj_priv->fence_reg = I915_FENCE_REG_NONE;
INIT_LIST_HEAD(&obj_priv->list);
INIT_LIST_HEAD(&obj_priv->fence_list);
+ obj_priv->madv = I915_MADV_WILLNEED;
return 0;
}
i915_gem_object_unbind(obj);
- i915_gem_free_mmap_offset(obj);
+ if (obj_priv->mmap_offset)
+ i915_gem_free_mmap_offset(obj);
kfree(obj_priv->page_cpu_valid);
kfree(obj_priv->bit_17);
* We need to replace this with a semaphore, or something.
*/
dev_priv->mm.suspended = 1;
+ del_timer(&dev_priv->hangcheck_timer);
/* Cancel the retire work handler, wait for it to finish if running
*/
if (last_seqno == cur_seqno) {
if (stuck++ > 100) {
DRM_ERROR("hardware wedged\n");
- dev_priv->mm.wedged = 1;
+ atomic_set(&dev_priv->mm.wedged, 1);
DRM_WAKEUP(&dev_priv->irq_queue);
break;
}
i915_gem_retire_requests(dev);
spin_lock(&dev_priv->mm.active_list_lock);
- if (!dev_priv->mm.wedged) {
+ if (!atomic_read(&dev_priv->mm.wedged)) {
/* Active and flushing should now be empty as we've
* waited for a sequence higher than any pending execbuffer
*/
if (drm_core_check_feature(dev, DRIVER_MODESET))
return 0;
- if (dev_priv->mm.wedged) {
+ if (atomic_read(&dev_priv->mm.wedged)) {
DRM_ERROR("Reenabling wedged hardware, good luck\n");
- dev_priv->mm.wedged = 0;
+ atomic_set(&dev_priv->mm.wedged, 0);
}
mutex_lock(&dev->struct_mutex);
i915_gem_retire_work_handler);
dev_priv->mm.next_gem_seqno = 1;
+ spin_lock(&shrink_list_lock);
+ list_add(&dev_priv->mm.shrink_list, &shrink_list);
+ spin_unlock(&shrink_list_lock);
+
/* Old X drivers will take 0-2 for front, back, depth buffers */
dev_priv->fence_reg_start = 3;
list_del_init(i915_file_priv->mm.request_list.next);
mutex_unlock(&dev->struct_mutex);
}
+
+/* Immediately discard the backing storage */
+static void
+i915_gem_object_truncate(struct drm_gem_object *obj)
+{
+ struct inode *inode;
+
+ inode = obj->filp->f_path.dentry->d_inode;
+
+ mutex_lock(&inode->i_mutex);
+ truncate_inode_pages(inode->i_mapping, 0);
+ mutex_unlock(&inode->i_mutex);
+}
+
+static inline int
+i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj_priv)
+{
+ return !obj_priv->dirty || obj_priv->madv == I915_MADV_DONTNEED;
+}
+
+static int
+i915_gem_shrink(int nr_to_scan, gfp_t gfp_mask)
+{
+ drm_i915_private_t *dev_priv, *next_dev;
+ struct drm_i915_gem_object *obj_priv, *next_obj;
+ int cnt = 0;
+ int would_deadlock = 1;
+
+ /* "fast-path" to count number of available objects */
+ if (nr_to_scan == 0) {
+ spin_lock(&shrink_list_lock);
+ list_for_each_entry(dev_priv, &shrink_list, mm.shrink_list) {
+ struct drm_device *dev = dev_priv->dev;
+
+ if (mutex_trylock(&dev->struct_mutex)) {
+ list_for_each_entry(obj_priv,
+ &dev_priv->mm.inactive_list,
+ list)
+ cnt++;
+ mutex_unlock(&dev->struct_mutex);
+ }
+ }
+ spin_unlock(&shrink_list_lock);
+
+ return (cnt / 100) * sysctl_vfs_cache_pressure;
+ }
+
+ spin_lock(&shrink_list_lock);
+
+ /* first scan for clean buffers */
+ list_for_each_entry_safe(dev_priv, next_dev,
+ &shrink_list, mm.shrink_list) {
+ struct drm_device *dev = dev_priv->dev;
+
+ if (! mutex_trylock(&dev->struct_mutex))
+ continue;
+
+ spin_unlock(&shrink_list_lock);
+
+ i915_gem_retire_requests(dev);
+
+ list_for_each_entry_safe(obj_priv, next_obj,
+ &dev_priv->mm.inactive_list,
+ list) {
+ if (i915_gem_object_is_purgeable(obj_priv)) {
+ struct drm_gem_object *obj = obj_priv->obj;
+ i915_gem_object_unbind(obj);
+ i915_gem_object_truncate(obj);
+
+ if (--nr_to_scan <= 0)
+ break;
+ }
+ }
+
+ spin_lock(&shrink_list_lock);
+ mutex_unlock(&dev->struct_mutex);
+
+ if (nr_to_scan <= 0)
+ break;
+ }
+
+ /* second pass, evict/count anything still on the inactive list */
+ list_for_each_entry_safe(dev_priv, next_dev,
+ &shrink_list, mm.shrink_list) {
+ struct drm_device *dev = dev_priv->dev;
+
+ if (! mutex_trylock(&dev->struct_mutex))
+ continue;
+
+ spin_unlock(&shrink_list_lock);
+
+ list_for_each_entry_safe(obj_priv, next_obj,
+ &dev_priv->mm.inactive_list,
+ list) {
+ if (nr_to_scan > 0) {
+ struct drm_gem_object *obj = obj_priv->obj;
+ i915_gem_object_unbind(obj);
+ if (i915_gem_object_is_purgeable(obj_priv))
+ i915_gem_object_truncate(obj);
+
+ nr_to_scan--;
+ } else
+ cnt++;
+ }
+
+ spin_lock(&shrink_list_lock);
+ mutex_unlock(&dev->struct_mutex);
+
+ would_deadlock = 0;
+ }
+
+ spin_unlock(&shrink_list_lock);
+
+ if (would_deadlock)
+ return -1;
+ else if (cnt > 0)
+ return (cnt / 100) * sysctl_vfs_cache_pressure;
+ else
+ return 0;
+}
+
+static struct shrinker shrinker = {
+ .shrink = i915_gem_shrink,
+ .seeks = DEFAULT_SEEKS,
+};
+
+__init void
+i915_gem_shrinker_init(void)
+{
+ register_shrinker(&shrinker);
+}
+
+__exit void
+i915_gem_shrinker_exit(void)
+{
+ unregister_shrinker(&shrinker);
+}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff