[Intel-gfx] [PATCH 3/5] drm/i915: Remove the list of pinned inactive objects
Chris Wilson
chris at chris-wilson.co.uk
Fri Feb 24 22:13:40 CET 2012
Simplify object tracking by removing the inactive but pinned list. The
only place where this was used is for counting the available memory,
which is just as easy performed by checking all objects on the rare
occasions it is required (application startup). The only other place
where it was used is during error-state capture, but has not yet proved
a useful resource.
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_debugfs.c | 16 ----------------
drivers/gpu/drm/i915/i915_drv.h | 10 ++--------
drivers/gpu/drm/i915/i915_gem.c | 33 ++++++---------------------------
drivers/gpu/drm/i915/i915_gem_evict.c | 10 +++++-----
drivers/gpu/drm/i915/i915_irq.c | 18 +-----------------
5 files changed, 14 insertions(+), 73 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index fdb7cce..ba6b8a6 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -46,7 +46,6 @@ enum {
ACTIVE_LIST,
FLUSHING_LIST,
INACTIVE_LIST,
- PINNED_LIST,
DEFERRED_FREE_LIST,
};
@@ -178,10 +177,6 @@ static int i915_gem_object_list_info(struct seq_file *m, void *data)
seq_printf(m, "Inactive:\n");
head = &dev_priv->mm.inactive_list;
break;
- case PINNED_LIST:
- seq_printf(m, "Pinned:\n");
- head = &dev_priv->mm.pinned_list;
- break;
case FLUSHING_LIST:
seq_printf(m, "Flushing:\n");
head = &dev_priv->mm.flushing_list;
@@ -252,11 +247,6 @@ 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.pinned_list, mm_list);
- seq_printf(m, " %u [%u] pinned objects, %zu [%zu] bytes\n",
- count, mappable_count, size, mappable_size);
-
- size = count = mappable_size = mappable_count = 0;
count_objects(&dev_priv->mm.inactive_list, mm_list);
seq_printf(m, " %u [%u] inactive objects, %zu [%zu] bytes\n",
count, mappable_count, size, mappable_size);
@@ -773,11 +763,6 @@ static int i915_error_state(struct seq_file *m, void *unused)
error->active_bo,
error->active_bo_count);
- if (error->pinned_bo)
- print_error_buffers(m, "Pinned",
- error->pinned_bo,
- error->pinned_bo_count);
-
for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
struct drm_i915_error_object *obj;
@@ -1811,7 +1796,6 @@ 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_pinned", i915_gem_object_list_info, 0, (void *) PINNED_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},
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index b839728..c17aeab 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -201,8 +201,8 @@ struct drm_i915_error_state {
u32 purgeable:1;
u32 ring:4;
u32 cache_level:2;
- } *active_bo, *pinned_bo;
- u32 active_bo_count, pinned_bo_count;
+ } *active_bo;
+ u32 active_bo_count;
struct intel_overlay_error_state *overlay;
struct intel_display_error_state *display;
};
@@ -645,12 +645,6 @@ typedef struct drm_i915_private {
*/
struct list_head inactive_list;
- /**
- * LRU list of objects which are not in the ringbuffer but
- * are still pinned in the GTT.
- */
- struct list_head pinned_list;
-
/** LRU list of objects with fence regs on them. */
struct list_head fence_list;
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 084c89f..474a34f 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -169,8 +169,9 @@ i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
pinned = 0;
mutex_lock(&dev->struct_mutex);
- list_for_each_entry(obj, &dev_priv->mm.pinned_list, mm_list)
- pinned += obj->gtt_space->size;
+ list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list)
+ if (obj->pin_count)
+ pinned += obj->gtt_space->size;
mutex_unlock(&dev->struct_mutex);
args->aper_size = dev_priv->mm.gtt_total;
@@ -1500,10 +1501,7 @@ i915_gem_object_move_to_inactive(struct drm_i915_gem_object *obj)
struct drm_device *dev = obj->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- if (obj->pin_count != 0)
- list_move_tail(&obj->mm_list, &dev_priv->mm.pinned_list);
- else
- list_move_tail(&obj->mm_list, &dev_priv->mm.inactive_list);
+ list_move_tail(&obj->mm_list, &dev_priv->mm.inactive_list);
BUG_ON(!list_empty(&obj->gpu_write_list));
BUG_ON(!obj->active);
@@ -3309,8 +3307,6 @@ i915_gem_object_pin(struct drm_i915_gem_object *obj,
uint32_t alignment,
bool map_and_fenceable)
{
- struct drm_device *dev = obj->base.dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
BUG_ON(obj->pin_count == DRM_I915_GEM_OBJECT_MAX_PIN_COUNT);
@@ -3339,11 +3335,7 @@ i915_gem_object_pin(struct drm_i915_gem_object *obj,
return ret;
}
- if (obj->pin_count++ == 0) {
- if (!obj->active)
- list_move_tail(&obj->mm_list,
- &dev_priv->mm.pinned_list);
- }
+ obj->pin_count++;
obj->pin_mappable |= map_and_fenceable;
WARN_ON(i915_verify_lists(dev));
@@ -3353,20 +3345,11 @@ i915_gem_object_pin(struct drm_i915_gem_object *obj,
void
i915_gem_object_unpin(struct drm_i915_gem_object *obj)
{
- struct drm_device *dev = obj->base.dev;
- drm_i915_private_t *dev_priv = dev->dev_private;
-
- WARN_ON(i915_verify_lists(dev));
BUG_ON(obj->pin_count == 0);
BUG_ON(obj->gtt_space == NULL);
- if (--obj->pin_count == 0) {
- if (!obj->active)
- list_move_tail(&obj->mm_list,
- &dev_priv->mm.inactive_list);
+ if (--obj->pin_count == 0)
obj->pin_mappable = false;
- }
- WARN_ON(i915_verify_lists(dev));
}
int
@@ -3670,9 +3653,6 @@ 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;
- while (obj->pin_count > 0)
- i915_gem_object_unpin(obj);
-
if (obj->phys_obj)
i915_gem_detach_phys_object(dev, obj);
@@ -3920,7 +3900,6 @@ i915_gem_load(struct drm_device *dev)
INIT_LIST_HEAD(&dev_priv->mm.active_list);
INIT_LIST_HEAD(&dev_priv->mm.flushing_list);
INIT_LIST_HEAD(&dev_priv->mm.inactive_list);
- INIT_LIST_HEAD(&dev_priv->mm.pinned_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);
diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c
index 097119c..41dcc69 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -35,6 +35,9 @@
static bool
mark_free(struct drm_i915_gem_object *obj, struct list_head *unwind)
{
+ if (obj->pin_count)
+ return false;
+
list_add(&obj->exec_list, unwind);
drm_gem_object_reference(&obj->base);
return drm_mm_scan_add_block(obj->gtt_space);
@@ -106,7 +109,7 @@ i915_gem_evict_something(struct drm_device *dev, int min_size,
/* Now merge in the soon-to-be-expired objects... */
list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
/* Does the object require an outstanding flush? */
- if (obj->base.write_domain || obj->pin_count)
+ if (obj->base.write_domain)
continue;
if (mark_free(obj, &unwind_list))
@@ -115,14 +118,11 @@ i915_gem_evict_something(struct drm_device *dev, int min_size,
/* Finally add anything with a pending flush (in order of retirement) */
list_for_each_entry(obj, &dev_priv->mm.flushing_list, mm_list) {
- if (obj->pin_count)
- continue;
-
if (mark_free(obj, &unwind_list))
goto found;
}
list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
- if (!obj->base.write_domain || obj->pin_count)
+ if (!obj->base.write_domain)
continue;
if (mark_free(obj, &unwind_list))
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index afd4e03..6ce5c0a 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1028,38 +1028,22 @@ static void i915_capture_error_state(struct drm_device *dev)
/* Record buffers on the active and pinned lists. */
error->active_bo = NULL;
- error->pinned_bo = NULL;
i = 0;
list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list)
i++;
error->active_bo_count = i;
- list_for_each_entry(obj, &dev_priv->mm.pinned_list, mm_list)
- i++;
- error->pinned_bo_count = i - error->active_bo_count;
error->active_bo = NULL;
- error->pinned_bo = NULL;
- if (i) {
+ if (i)
error->active_bo = kmalloc(sizeof(*error->active_bo)*i,
GFP_ATOMIC);
- if (error->active_bo)
- error->pinned_bo =
- error->active_bo + error->active_bo_count;
- }
-
if (error->active_bo)
error->active_bo_count =
capture_bo_list(error->active_bo,
error->active_bo_count,
&dev_priv->mm.active_list);
- if (error->pinned_bo)
- error->pinned_bo_count =
- capture_bo_list(error->pinned_bo,
- error->pinned_bo_count,
- &dev_priv->mm.pinned_list);
-
do_gettimeofday(&error->time);
error->overlay = intel_overlay_capture_error_state(dev);
--
1.7.9.1
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