diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 11 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_shrinker.c | 34 |
2 files changed, 38 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 997feddb8436..6d643642e0ce 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -3331,6 +3331,16 @@ static int i915_engine_info(struct seq_file *m, void *unused) return 0; } +static int i915_shrinker_info(struct seq_file *m, void *unused) +{ + struct drm_i915_private *i915 = node_to_i915(m->private); + + seq_printf(m, "seeks = %d\n", i915->mm.shrinker.seeks); + seq_printf(m, "batch = %lu\n", i915->mm.shrinker.batch); + + return 0; +} + static int i915_semaphore_status(struct seq_file *m, void *unused) { struct drm_i915_private *dev_priv = node_to_i915(m->private); @@ -4811,6 +4821,7 @@ static const struct drm_info_list i915_debugfs_list[] = { {"i915_dmc_info", i915_dmc_info, 0}, {"i915_display_info", i915_display_info, 0}, {"i915_engine_info", i915_engine_info, 0}, + {"i915_shrinker_info", i915_shrinker_info, 0}, {"i915_semaphore_status", i915_semaphore_status, 0}, {"i915_shared_dplls_info", i915_shared_dplls_info, 0}, {"i915_dp_mst_info", i915_dp_mst_info, 0}, diff --git a/drivers/gpu/drm/i915/i915_gem_shrinker.c b/drivers/gpu/drm/i915/i915_gem_shrinker.c index 175765111f4e..eb31f8aa5c21 100644 --- a/drivers/gpu/drm/i915/i915_gem_shrinker.c +++ b/drivers/gpu/drm/i915/i915_gem_shrinker.c @@ -295,20 +295,39 @@ unsigned long i915_gem_shrink_all(struct drm_i915_private *dev_priv) static unsigned long i915_gem_shrinker_count(struct shrinker *shrinker, struct shrink_control *sc) { - struct drm_i915_private *dev_priv = + struct drm_i915_private *i915 = container_of(shrinker, struct drm_i915_private, mm.shrinker); struct drm_i915_gem_object *obj; + unsigned long num_objects = 0; unsigned long count = 0; - spin_lock(&dev_priv->mm.obj_lock); - list_for_each_entry(obj, &dev_priv->mm.unbound_list, mm.link) - if (can_release_pages(obj)) + spin_lock(&i915->mm.obj_lock); + list_for_each_entry(obj, &i915->mm.unbound_list, mm.link) + if (can_release_pages(obj)) { count += obj->base.size >> PAGE_SHIFT; + num_objects++; + } - list_for_each_entry(obj, &dev_priv->mm.bound_list, mm.link) - if (!i915_gem_object_is_active(obj) && can_release_pages(obj)) + list_for_each_entry(obj, &i915->mm.bound_list, mm.link) + if (!i915_gem_object_is_active(obj) && can_release_pages(obj)) { count += obj->base.size >> PAGE_SHIFT; - spin_unlock(&dev_priv->mm.obj_lock); + num_objects++; + } + spin_unlock(&i915->mm.obj_lock); + + /* Update our preferred vmscan batch size for the next pass. + * Our rough guess for an effective batch size is roughly 2 + * available GEM objects worth of pages. That is we don't want + * the shrinker to fire, until it is worth the cost of freeing an + * entire GEM object. + */ + if (num_objects) { + unsigned long avg = 2 * count / num_objects; + + i915->mm.shrinker.batch = + max((i915->mm.shrinker.batch + avg) >> 1, + 128ul /* default SHRINK_BATCH */); + } return count; } @@ -473,6 +492,7 @@ void i915_gem_shrinker_init(struct drm_i915_private *dev_priv) dev_priv->mm.shrinker.scan_objects = i915_gem_shrinker_scan; dev_priv->mm.shrinker.count_objects = i915_gem_shrinker_count; dev_priv->mm.shrinker.seeks = DEFAULT_SEEKS; + dev_priv->mm.shrinker.batch = 4096; WARN_ON(register_shrinker(&dev_priv->mm.shrinker)); dev_priv->mm.oom_notifier.notifier_call = i915_gem_shrinker_oom; |