[Intel-gfx] [PATCH 02/17] drm/i915: Remove the deferred-free list
Chris Wilson
chris at chris-wilson.co.uk
Sat Apr 21 18:35:46 CEST 2012
The use of the mm_list by deferred-free breaks the following patches to
extend the range of objects tracked. We can simplify things if we just
make the unbind during free uninterrible.
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_debugfs.c | 11 -------
drivers/gpu/drm/i915/i915_drv.h | 8 -----
drivers/gpu/drm/i915/i915_gem.c | 58 ++++++++++++-----------------------
3 files changed, 19 insertions(+), 58 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 52e8753..5cb2bf8 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -47,7 +47,6 @@ enum {
FLUSHING_LIST,
INACTIVE_LIST,
PINNED_LIST,
- DEFERRED_FREE_LIST,
};
static const char *yesno(int v)
@@ -182,10 +181,6 @@ static int i915_gem_object_list_info(struct seq_file *m, void *data)
seq_printf(m, "Flushing:\n");
head = &dev_priv->mm.flushing_list;
break;
- case DEFERRED_FREE_LIST:
- seq_printf(m, "Deferred free:\n");
- head = &dev_priv->mm.deferred_free_list;
- break;
default:
mutex_unlock(&dev->struct_mutex);
return -EINVAL;
@@ -253,11 +248,6 @@ static int i915_gem_object_info(struct seq_file *m, void* data)
count, mappable_count, size, mappable_size);
size = count = mappable_size = mappable_count = 0;
- count_objects(&dev_priv->mm.deferred_free_list, mm_list);
- seq_printf(m, " %u [%u] freed objects, %zu [%zu] bytes\n",
- count, mappable_count, size, mappable_size);
-
- size = count = mappable_size = mappable_count = 0;
list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
if (obj->fault_mappable) {
size += obj->gtt_space->size;
@@ -1896,7 +1886,6 @@ static struct drm_info_list i915_debugfs_list[] = {
{"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
{"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
{"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
- {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
{"i915_gem_pageflip", i915_gem_pageflip_info, 0},
{"i915_gem_request", i915_gem_request_info, 0},
{"i915_gem_seqno", i915_gem_seqno_info, 0},
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 1dc0d4f..34b8e9f 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -693,14 +693,6 @@ typedef struct drm_i915_private {
struct list_head fence_list;
/**
- * List of objects currently pending being freed.
- *
- * These objects are no longer in use, but due to a signal
- * we were prevented from freeing them at the appointed time.
- */
- struct list_head deferred_free_list;
-
- /**
* We leave the user IRQ off as much as possible,
* but this means that requests will finish and never
* be retired once the system goes idle. Set a timer to
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 24b3786..fc10e88 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -46,7 +46,6 @@ static int i915_gem_phys_pwrite(struct drm_device *dev,
struct drm_i915_gem_object *obj,
struct drm_i915_gem_pwrite *args,
struct drm_file *file);
-static void i915_gem_free_object_tail(struct drm_i915_gem_object *obj);
static void i915_gem_write_fence(struct drm_device *dev, int reg,
struct drm_i915_gem_object *obj);
@@ -1779,20 +1778,6 @@ i915_gem_retire_requests(struct drm_device *dev)
drm_i915_private_t *dev_priv = dev->dev_private;
int i;
- if (!list_empty(&dev_priv->mm.deferred_free_list)) {
- struct drm_i915_gem_object *obj, *next;
-
- /* We must be careful that during unbind() we do not
- * accidentally infinitely recurse into retire requests.
- * Currently:
- * retire -> free -> unbind -> wait -> retire_ring
- */
- list_for_each_entry_safe(obj, next,
- &dev_priv->mm.deferred_free_list,
- mm_list)
- i915_gem_free_object_tail(obj);
- }
-
for (i = 0; i < I915_NUM_RINGS; i++)
i915_gem_retire_requests_ring(&dev_priv->ring[i]);
}
@@ -2064,7 +2049,7 @@ i915_gem_object_unbind(struct drm_i915_gem_object *obj)
}
ret = i915_gem_object_finish_gpu(obj);
- if (ret == -ERESTARTSYS)
+ if (ret)
return ret;
/* Continue on if we fail due to EIO, the GPU is hung so we
* should be safe and we need to cleanup or else we might
@@ -2091,7 +2076,7 @@ i915_gem_object_unbind(struct drm_i915_gem_object *obj)
/* release the fence reg _after_ flushing */
ret = i915_gem_object_put_fence(obj);
- if (ret == -ERESTARTSYS)
+ if (ret)
return ret;
trace_i915_gem_object_unbind(obj);
@@ -3384,21 +3369,29 @@ int i915_gem_init_object(struct drm_gem_object *obj)
return 0;
}
-static void i915_gem_free_object_tail(struct drm_i915_gem_object *obj)
+void i915_gem_free_object(struct drm_gem_object *gem_obj)
{
+ struct drm_i915_gem_object *obj = to_intel_bo(gem_obj);
struct drm_device *dev = obj->base.dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- int ret;
-
- ret = i915_gem_object_unbind(obj);
- if (ret == -ERESTARTSYS) {
- list_move(&obj->mm_list,
- &dev_priv->mm.deferred_free_list);
- return;
- }
trace_i915_gem_object_destroy(obj);
+ if (obj->phys_obj)
+ i915_gem_detach_phys_object(dev, obj);
+
+ obj->pin_count = 0;
+ if (WARN_ON(i915_gem_object_unbind(obj) == -ERESTARTSYS)) {
+ bool was_interruptible;
+
+ was_interruptible = dev_priv->mm.interruptible;
+ dev_priv->mm.interruptible = false;
+
+ WARN_ON(i915_gem_object_unbind(obj));
+
+ dev_priv->mm.interruptible = was_interruptible;
+ }
+
if (obj->base.map_list.map)
drm_gem_free_mmap_offset(&obj->base);
@@ -3409,18 +3402,6 @@ static void i915_gem_free_object_tail(struct drm_i915_gem_object *obj)
kfree(obj);
}
-void i915_gem_free_object(struct drm_gem_object *gem_obj)
-{
- struct drm_i915_gem_object *obj = to_intel_bo(gem_obj);
- struct drm_device *dev = obj->base.dev;
-
- if (obj->phys_obj)
- i915_gem_detach_phys_object(dev, obj);
-
- obj->pin_count = 0;
- i915_gem_free_object_tail(obj);
-}
-
int
i915_gem_idle(struct drm_device *dev)
{
@@ -3686,7 +3667,6 @@ i915_gem_load(struct drm_device *dev)
INIT_LIST_HEAD(&dev_priv->mm.flushing_list);
INIT_LIST_HEAD(&dev_priv->mm.inactive_list);
INIT_LIST_HEAD(&dev_priv->mm.fence_list);
- INIT_LIST_HEAD(&dev_priv->mm.deferred_free_list);
INIT_LIST_HEAD(&dev_priv->mm.gtt_list);
for (i = 0; i < I915_NUM_RINGS; i++)
init_ring_lists(&dev_priv->ring[i]);
--
1.7.10
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