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authorChris Wilson <chris@chris-wilson.co.uk>2010-10-19 10:36:51 +0100
committerChris Wilson <chris@chris-wilson.co.uk>2010-10-20 10:51:51 +0100
commit69dc4987cbe5fe70ae1c2a08906d431d53cdd242 (patch)
treee8864d862538096b70a7d12eb1f9763f6faa8c39
parent87acb0a550694ff1a7725ea3a73b80d8ccf56180 (diff)
downloadop-kernel-dev-69dc4987cbe5fe70ae1c2a08906d431d53cdd242.zip
op-kernel-dev-69dc4987cbe5fe70ae1c2a08906d431d53cdd242.tar.gz
drm/i915: Track objects in global active list (as well as per-ring)
To handle retirements, we need per-ring tracking of active objects. To handle evictions, we need global tracking of active objects. As we enable more rings, rebuilding the global list from the individual per-ring lists quickly grows tiresome and overly complicated. Tracking the active objects in two lists is the lesser of two evils. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
-rw-r--r--drivers/gpu/drm/i915/i915_debugfs.c23
-rw-r--r--drivers/gpu/drm/i915/i915_drv.h14
-rw-r--r--drivers/gpu/drm/i915/i915_gem.c47
-rw-r--r--drivers/gpu/drm/i915/i915_gem_evict.c59
-rw-r--r--drivers/gpu/drm/i915/i915_irq.c11
5 files changed, 58 insertions, 96 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index d598070f..f9e3295 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -41,8 +41,7 @@
#if defined(CONFIG_DEBUG_FS)
enum {
- RENDER_LIST,
- BSD_LIST,
+ ACTIVE_LIST,
FLUSHING_LIST,
INACTIVE_LIST,
PINNED_LIST,
@@ -125,6 +124,8 @@ describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
seq_printf(m, " (fence: %d)", obj->fence_reg);
if (obj->gtt_space != NULL)
seq_printf(m, " (gtt_offset: %08x)", obj->gtt_offset);
+ if (obj->ring != NULL)
+ seq_printf(m, " (%s)", obj->ring->name);
}
static int i915_gem_object_list_info(struct seq_file *m, void *data)
@@ -143,13 +144,9 @@ static int i915_gem_object_list_info(struct seq_file *m, void *data)
return ret;
switch (list) {
- case RENDER_LIST:
- seq_printf(m, "Render:\n");
- head = &dev_priv->render_ring.active_list;
- break;
- case BSD_LIST:
- seq_printf(m, "BSD:\n");
- head = &dev_priv->bsd_ring.active_list;
+ case ACTIVE_LIST:
+ seq_printf(m, "Active:\n");
+ head = &dev_priv->mm.active_list;
break;
case INACTIVE_LIST:
seq_printf(m, "Inactive:\n");
@@ -173,7 +170,7 @@ static int i915_gem_object_list_info(struct seq_file *m, void *data)
}
total_obj_size = total_gtt_size = count = 0;
- list_for_each_entry(obj_priv, head, list) {
+ list_for_each_entry(obj_priv, head, mm_list) {
seq_printf(m, " ");
describe_obj(m, obj_priv);
seq_printf(m, "\n");
@@ -460,8 +457,7 @@ static int i915_batchbuffer_info(struct seq_file *m, void *data)
if (ret)
return ret;
- list_for_each_entry(obj_priv, &dev_priv->render_ring.active_list,
- list) {
+ list_for_each_entry(obj_priv, &dev_priv->mm.active_list, mm_list) {
obj = &obj_priv->base;
if (obj->read_domains & I915_GEM_DOMAIN_COMMAND) {
seq_printf(m, "--- gtt_offset = 0x%08x\n",
@@ -1020,8 +1016,7 @@ static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
static struct drm_info_list i915_debugfs_list[] = {
{"i915_capabilities", i915_capabilities, 0, 0},
{"i915_gem_objects", i915_gem_object_info, 0},
- {"i915_gem_render_active", i915_gem_object_list_info, 0, (void *) RENDER_LIST},
- {"i915_gem_bsd_active", i915_gem_object_list_info, 0, (void *) BSD_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},
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 84e33ae..817d8be 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -548,6 +548,17 @@ typedef struct drm_i915_private {
struct list_head shrink_list;
/**
+ * List of objects currently involved in rendering.
+ *
+ * Includes buffers having the contents of their GPU caches
+ * flushed, not necessarily primitives. last_rendering_seqno
+ * represents when the rendering involved will be completed.
+ *
+ * A reference is held on the buffer while on this list.
+ */
+ struct list_head active_list;
+
+ /**
* List of objects which are not in the ringbuffer but which
* still have a write_domain which needs to be flushed before
* unbinding.
@@ -714,7 +725,8 @@ struct drm_i915_gem_object {
struct drm_mm_node *gtt_space;
/** This object's place on the active/flushing/inactive lists */
- struct list_head list;
+ struct list_head ring_list;
+ struct list_head mm_list;
/** This object's place on GPU write list */
struct list_head gpu_write_list;
/** This object's place on eviction list */
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 5615368..6e85496 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1139,7 +1139,7 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
/* Maintain LRU order of "inactive" objects */
if (ret == 0 && i915_gem_object_is_inactive(obj_priv))
- list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list);
+ list_move_tail(&obj_priv->mm_list, &dev_priv->mm.inactive_list);
drm_gem_object_unreference(obj);
unlock:
@@ -1271,7 +1271,7 @@ int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
}
if (i915_gem_object_is_inactive(obj_priv))
- list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list);
+ list_move_tail(&obj_priv->mm_list, &dev_priv->mm.inactive_list);
pfn = ((dev->agp->base + obj_priv->gtt_offset) >> PAGE_SHIFT) +
page_offset;
@@ -1565,6 +1565,7 @@ i915_gem_object_move_to_active(struct drm_gem_object *obj,
struct intel_ring_buffer *ring)
{
struct drm_device *dev = obj->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
uint32_t seqno = i915_gem_next_request_seqno(dev, ring);
@@ -1578,7 +1579,8 @@ i915_gem_object_move_to_active(struct drm_gem_object *obj,
}
/* Move from whatever list we were on to the tail of execution. */
- list_move_tail(&obj_priv->list, &ring->active_list);
+ list_move_tail(&obj_priv->mm_list, &dev_priv->mm.active_list);
+ list_move_tail(&obj_priv->ring_list, &ring->active_list);
obj_priv->last_rendering_seqno = seqno;
}
@@ -1590,7 +1592,8 @@ i915_gem_object_move_to_flushing(struct drm_gem_object *obj)
struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
BUG_ON(!obj_priv->active);
- list_move_tail(&obj_priv->list, &dev_priv->mm.flushing_list);
+ list_move_tail(&obj_priv->mm_list, &dev_priv->mm.flushing_list);
+ list_del_init(&obj_priv->ring_list);
obj_priv->last_rendering_seqno = 0;
}
@@ -1629,9 +1632,10 @@ i915_gem_object_move_to_inactive(struct drm_gem_object *obj)
struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
if (obj_priv->pin_count != 0)
- list_move_tail(&obj_priv->list, &dev_priv->mm.pinned_list);
+ list_move_tail(&obj_priv->mm_list, &dev_priv->mm.pinned_list);
else
- list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list);
+ list_move_tail(&obj_priv->mm_list, &dev_priv->mm.inactive_list);
+ list_del_init(&obj_priv->ring_list);
BUG_ON(!list_empty(&obj_priv->gpu_write_list));
@@ -1780,7 +1784,7 @@ static void i915_gem_reset_ring_lists(struct drm_i915_private *dev_priv,
obj_priv = list_first_entry(&ring->active_list,
struct drm_i915_gem_object,
- list);
+ ring_list);
obj_priv->base.write_domain = 0;
list_del_init(&obj_priv->gpu_write_list);
@@ -1804,7 +1808,7 @@ void i915_gem_reset(struct drm_device *dev)
while (!list_empty(&dev_priv->mm.flushing_list)) {
obj_priv = list_first_entry(&dev_priv->mm.flushing_list,
struct drm_i915_gem_object,
- list);
+ mm_list);
obj_priv->base.write_domain = 0;
list_del_init(&obj_priv->gpu_write_list);
@@ -1816,7 +1820,7 @@ void i915_gem_reset(struct drm_device *dev)
*/
list_for_each_entry(obj_priv,
&dev_priv->mm.inactive_list,
- list)
+ mm_list)
{
obj_priv->base.read_domains &= ~I915_GEM_GPU_DOMAINS;
}
@@ -1876,7 +1880,7 @@ i915_gem_retire_requests_ring(struct drm_device *dev,
obj_priv = list_first_entry(&ring->active_list,
struct drm_i915_gem_object,
- list);
+ ring_list);
if (!i915_seqno_passed(seqno, obj_priv->last_rendering_seqno))
break;
@@ -1912,7 +1916,7 @@ i915_gem_retire_requests(struct drm_device *dev)
*/
list_for_each_entry_safe(obj_priv, tmp,
&dev_priv->mm.deferred_free_list,
- list)
+ mm_list)
i915_gem_free_object_tail(&obj_priv->base);
}
@@ -2145,7 +2149,7 @@ i915_gem_object_unbind(struct drm_gem_object *obj)
BUG_ON(obj_priv->pages_refcount);
i915_gem_info_remove_gtt(dev_priv, obj->size);
- list_del_init(&obj_priv->list);
+ list_del_init(&obj_priv->mm_list);
drm_mm_put_block(obj_priv->gtt_space);
obj_priv->gtt_space = NULL;
@@ -2700,7 +2704,7 @@ i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment)
}
/* keep track of bounds object by adding it to the inactive list */
- list_add_tail(&obj_priv->list, &dev_priv->mm.inactive_list);
+ list_add_tail(&obj_priv->mm_list, &dev_priv->mm.inactive_list);
i915_gem_info_add_gtt(dev_priv, obj->size);
/* Assert that the object is not currently in any GPU domain. As it
@@ -4022,7 +4026,7 @@ i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment)
if (obj_priv->pin_count == 1) {
i915_gem_info_add_pin(dev_priv, obj->size);
if (!obj_priv->active)
- list_move_tail(&obj_priv->list,
+ list_move_tail(&obj_priv->mm_list,
&dev_priv->mm.pinned_list);
}
@@ -4048,7 +4052,7 @@ i915_gem_object_unpin(struct drm_gem_object *obj)
*/
if (obj_priv->pin_count == 0) {
if (!obj_priv->active)
- list_move_tail(&obj_priv->list,
+ list_move_tail(&obj_priv->mm_list,
&dev_priv->mm.inactive_list);
i915_gem_info_remove_pin(dev_priv, obj->size);
}
@@ -4280,7 +4284,8 @@ struct drm_gem_object * i915_gem_alloc_object(struct drm_device *dev,
obj->agp_type = AGP_USER_MEMORY;
obj->base.driver_private = NULL;
obj->fence_reg = I915_FENCE_REG_NONE;
- INIT_LIST_HEAD(&obj->list);
+ INIT_LIST_HEAD(&obj->mm_list);
+ INIT_LIST_HEAD(&obj->ring_list);
INIT_LIST_HEAD(&obj->gpu_write_list);
obj->madv = I915_MADV_WILLNEED;
@@ -4303,7 +4308,7 @@ static void i915_gem_free_object_tail(struct drm_gem_object *obj)
ret = i915_gem_object_unbind(obj);
if (ret == -ERESTARTSYS) {
- list_move(&obj_priv->list,
+ list_move(&obj_priv->mm_list,
&dev_priv->mm.deferred_free_list);
return;
}
@@ -4511,6 +4516,7 @@ i915_gem_entervt_ioctl(struct drm_device *dev, void *data,
return ret;
}
+ BUG_ON(!list_empty(&dev_priv->mm.active_list));
BUG_ON(!list_empty(&dev_priv->render_ring.active_list));
BUG_ON(!list_empty(&dev_priv->bsd_ring.active_list));
BUG_ON(!list_empty(&dev_priv->mm.flushing_list));
@@ -4564,6 +4570,7 @@ i915_gem_load(struct drm_device *dev)
int i;
drm_i915_private_t *dev_priv = dev->dev_private;
+ INIT_LIST_HEAD(&dev_priv->mm.active_list);
INIT_LIST_HEAD(&dev_priv->mm.flushing_list);
INIT_LIST_HEAD(&dev_priv->mm.gpu_write_list);
INIT_LIST_HEAD(&dev_priv->mm.inactive_list);
@@ -4859,7 +4866,7 @@ i915_gem_shrink(struct shrinker *shrink, int nr_to_scan, gfp_t gfp_mask)
if (mutex_trylock(&dev->struct_mutex)) {
list_for_each_entry(obj_priv,
&dev_priv->mm.inactive_list,
- list)
+ mm_list)
cnt++;
mutex_unlock(&dev->struct_mutex);
}
@@ -4885,7 +4892,7 @@ rescan:
list_for_each_entry_safe(obj_priv, next_obj,
&dev_priv->mm.inactive_list,
- list) {
+ mm_list) {
if (i915_gem_object_is_purgeable(obj_priv)) {
i915_gem_object_unbind(&obj_priv->base);
if (--nr_to_scan <= 0)
@@ -4914,7 +4921,7 @@ rescan:
list_for_each_entry_safe(obj_priv, next_obj,
&dev_priv->mm.inactive_list,
- list) {
+ mm_list) {
if (nr_to_scan > 0) {
i915_gem_object_unbind(&obj_priv->base);
nr_to_scan--;
diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c
index d2733a1..70db2f1 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -31,49 +31,6 @@
#include "i915_drv.h"
#include "i915_drm.h"
-static struct drm_i915_gem_object *
-i915_gem_next_active_object(struct drm_device *dev,
- struct list_head **render_iter,
- struct list_head **bsd_iter)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *render_obj = NULL, *bsd_obj = NULL;
-
- if (*render_iter != &dev_priv->render_ring.active_list)
- render_obj = list_entry(*render_iter,
- struct drm_i915_gem_object,
- list);
-
- if (HAS_BSD(dev)) {
- if (*bsd_iter != &dev_priv->bsd_ring.active_list)
- bsd_obj = list_entry(*bsd_iter,
- struct drm_i915_gem_object,
- list);
-
- if (render_obj == NULL) {
- *bsd_iter = (*bsd_iter)->next;
- return bsd_obj;
- }
-
- if (bsd_obj == NULL) {
- *render_iter = (*render_iter)->next;
- return render_obj;
- }
-
- /* XXX can we handle seqno wrapping? */
- if (render_obj->last_rendering_seqno < bsd_obj->last_rendering_seqno) {
- *render_iter = (*render_iter)->next;
- return render_obj;
- } else {
- *bsd_iter = (*bsd_iter)->next;
- return bsd_obj;
- }
- } else {
- *render_iter = (*render_iter)->next;
- return render_obj;
- }
-}
-
static bool
mark_free(struct drm_i915_gem_object *obj_priv,
struct list_head *unwind)
@@ -83,18 +40,12 @@ mark_free(struct drm_i915_gem_object *obj_priv,
return drm_mm_scan_add_block(obj_priv->gtt_space);
}
-#define i915_for_each_active_object(OBJ, R, B) \
- *(R) = dev_priv->render_ring.active_list.next; \
- *(B) = dev_priv->bsd_ring.active_list.next; \
- while (((OBJ) = i915_gem_next_active_object(dev, (R), (B))) != NULL)
-
int
i915_gem_evict_something(struct drm_device *dev, int min_size, unsigned alignment)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct list_head eviction_list, unwind_list;
struct drm_i915_gem_object *obj_priv;
- struct list_head *render_iter, *bsd_iter;
int ret = 0;
i915_gem_retire_requests(dev);
@@ -131,13 +82,13 @@ i915_gem_evict_something(struct drm_device *dev, int min_size, unsigned alignmen
drm_mm_init_scan(&dev_priv->mm.gtt_space, min_size, alignment);
/* First see if there is a large enough contiguous idle region... */
- list_for_each_entry(obj_priv, &dev_priv->mm.inactive_list, list) {
+ list_for_each_entry(obj_priv, &dev_priv->mm.inactive_list, mm_list) {
if (mark_free(obj_priv, &unwind_list))
goto found;
}
/* Now merge in the soon-to-be-expired objects... */
- i915_for_each_active_object(obj_priv, &render_iter, &bsd_iter) {
+ list_for_each_entry(obj_priv, &dev_priv->mm.active_list, mm_list) {
/* Does the object require an outstanding flush? */
if (obj_priv->base.write_domain || obj_priv->pin_count)
continue;
@@ -147,14 +98,14 @@ i915_gem_evict_something(struct drm_device *dev, int min_size, unsigned alignmen
}
/* Finally add anything with a pending flush (in order of retirement) */
- list_for_each_entry(obj_priv, &dev_priv->mm.flushing_list, list) {
+ list_for_each_entry(obj_priv, &dev_priv->mm.flushing_list, mm_list) {
if (obj_priv->pin_count)
continue;
if (mark_free(obj_priv, &unwind_list))
goto found;
}
- i915_for_each_active_object(obj_priv, &render_iter, &bsd_iter) {
+ list_for_each_entry(obj_priv, &dev_priv->mm.active_list, mm_list) {
if (! obj_priv->base.write_domain || obj_priv->pin_count)
continue;
@@ -251,7 +202,7 @@ i915_gem_evict_inactive(struct drm_device *dev)
obj = &list_first_entry(&dev_priv->mm.inactive_list,
struct drm_i915_gem_object,
- list)->base;
+ mm_list)->base;
ret = i915_gem_object_unbind(obj);
if (ret != 0) {
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 1e30c25..f94cd7f 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -608,9 +608,7 @@ static void i915_capture_error_state(struct drm_device *dev)
batchbuffer[0] = NULL;
batchbuffer[1] = NULL;
count = 0;
- list_for_each_entry(obj_priv,
- &dev_priv->render_ring.active_list, list) {
-
+ list_for_each_entry(obj_priv, &dev_priv->mm.active_list, mm_list) {
struct drm_gem_object *obj = &obj_priv->base;
if (batchbuffer[0] == NULL &&
@@ -627,7 +625,7 @@ static void i915_capture_error_state(struct drm_device *dev)
}
/* Scan the other lists for completeness for those bizarre errors. */
if (batchbuffer[0] == NULL || batchbuffer[1] == NULL) {
- list_for_each_entry(obj_priv, &dev_priv->mm.flushing_list, list) {
+ list_for_each_entry(obj_priv, &dev_priv->mm.flushing_list, mm_list) {
struct drm_gem_object *obj = &obj_priv->base;
if (batchbuffer[0] == NULL &&
@@ -645,7 +643,7 @@ static void i915_capture_error_state(struct drm_device *dev)
}
}
if (batchbuffer[0] == NULL || batchbuffer[1] == NULL) {
- list_for_each_entry(obj_priv, &dev_priv->mm.inactive_list, list) {
+ list_for_each_entry(obj_priv, &dev_priv->mm.inactive_list, mm_list) {
struct drm_gem_object *obj = &obj_priv->base;
if (batchbuffer[0] == NULL &&
@@ -686,8 +684,7 @@ static void i915_capture_error_state(struct drm_device *dev)
if (error->active_bo) {
int i = 0;
- list_for_each_entry(obj_priv,
- &dev_priv->render_ring.active_list, list) {
+ list_for_each_entry(obj_priv, &dev_priv->mm.active_list, mm_list) {
struct drm_gem_object *obj = &obj_priv->base;
error->active_bo[i].size = obj->size;
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