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drm/i915: Remove the per-ring write list

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This is now handled by a global flag to ensure we emit a flush before
the next serialisation point (if we failed to queue one previously).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2012-07-20 12:41:03 +01:00 committed by Daniel Vetter
parent 65ce302741
commit 69c2fc8913
5 changed files with 3 additions and 70 deletions
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2
drivers/gpu/drm/i915/i915_drv.h
View File

@ -865,8 +865,6 @@ struct drm_i915_gem_object {
/** This object's place on the active/inactive lists */
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 in the batchbuffer or on the eviction list */
struct list_head exec_list;

53
drivers/gpu/drm/i915/i915_gem.c
View File

@ -1465,7 +1465,6 @@ i915_gem_object_move_to_inactive(struct drm_i915_gem_object *obj)
list_move_tail(&obj->mm_list, &dev_priv->mm.inactive_list);
BUG_ON(!list_empty(&obj->gpu_write_list));
BUG_ON(obj->base.write_domain & ~I915_GEM_GPU_DOMAINS);
BUG_ON(!obj->active);
@ -1511,30 +1510,6 @@ i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj)
return obj->madv == I915_MADV_DONTNEED;
}
static void
i915_gem_process_flushing_list(struct intel_ring_buffer *ring,
uint32_t flush_domains)
{
struct drm_i915_gem_object *obj, *next;
list_for_each_entry_safe(obj, next,
&ring->gpu_write_list,
gpu_write_list) {
if (obj->base.write_domain & flush_domains) {
uint32_t old_write_domain = obj->base.write_domain;
obj->base.write_domain = 0;
list_del_init(&obj->gpu_write_list);
i915_gem_object_move_to_active(obj, ring,
i915_gem_next_request_seqno(ring));
trace_i915_gem_object_change_domain(obj,
obj->base.read_domains,
old_write_domain);
}
}
}
static u32
i915_gem_get_seqno(struct drm_device *dev)
{
@ -1637,8 +1612,6 @@ i915_add_request(struct intel_ring_buffer *ring,
&dev_priv->mm.retire_work, HZ);
}
WARN_ON(!list_empty(&ring->gpu_write_list));
return 0;
}
@ -1680,7 +1653,6 @@ static void i915_gem_reset_ring_lists(struct drm_i915_private *dev_priv,
struct drm_i915_gem_object,
ring_list);
list_del_init(&obj->gpu_write_list);
i915_gem_object_move_to_inactive(obj);
}
}
@ -2011,11 +1983,6 @@ i915_gem_object_wait_rendering(struct drm_i915_gem_object *obj,
u32 seqno;
int ret;
/* This function only exists to support waiting for existing rendering,
* not for emitting required flushes.
*/
BUG_ON((obj->base.write_domain & I915_GEM_GPU_DOMAINS) != 0);
/* If there is rendering queued on the buffer being evicted, wait for
* it.
*/
@ -2308,26 +2275,14 @@ i915_gem_flush_ring(struct intel_ring_buffer *ring,
if (ret)
return ret;
if (flush_domains & I915_GEM_GPU_DOMAINS)
i915_gem_process_flushing_list(ring, flush_domains);
return 0;
}
static int i915_ring_idle(struct intel_ring_buffer *ring)
{
int ret;
if (list_empty(&ring->gpu_write_list) && list_empty(&ring->active_list))
if (list_empty(&ring->active_list))
return 0;
if (!list_empty(&ring->gpu_write_list)) {
ret = i915_gem_flush_ring(ring,
I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS);
if (ret)
return ret;
}
return i915_wait_seqno(ring, i915_gem_next_request_seqno(ring));
}
@ -2343,10 +2298,6 @@ int i915_gpu_idle(struct drm_device *dev)
if (ret)
return ret;
/* Is the device fubar? */
if (WARN_ON(!list_empty(&ring->gpu_write_list)))
return -EBUSY;
ret = i915_switch_context(ring, NULL, DEFAULT_CONTEXT_ID);
if (ret)
return ret;
@ -3491,7 +3442,6 @@ struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev,
INIT_LIST_HEAD(&obj->gtt_list);
INIT_LIST_HEAD(&obj->ring_list);
INIT_LIST_HEAD(&obj->exec_list);
INIT_LIST_HEAD(&obj->gpu_write_list);
obj->madv = I915_MADV_WILLNEED;
/* Avoid an unnecessary call to unbind on the first bind. */
obj->map_and_fenceable = true;
@ -3912,7 +3862,6 @@ init_ring_lists(struct intel_ring_buffer *ring)
{
INIT_LIST_HEAD(&ring->active_list);
INIT_LIST_HEAD(&ring->request_list);
INIT_LIST_HEAD(&ring->gpu_write_list);
}
void

7
drivers/gpu/drm/i915/i915_gem_execbuffer.c
View File

@ -943,9 +943,8 @@ i915_gem_execbuffer_move_to_active(struct list_head *objects,
struct drm_i915_gem_object *obj;
list_for_each_entry(obj, objects, exec_list) {
u32 old_read = obj->base.read_domains;
u32 old_write = obj->base.write_domain;
u32 old_read = obj->base.read_domains;
u32 old_write = obj->base.write_domain;
obj->base.read_domains = obj->base.pending_read_domains;
obj->base.write_domain = obj->base.pending_write_domain;
@ -955,8 +954,6 @@ i915_gem_execbuffer_move_to_active(struct list_head *objects,
if (obj->base.write_domain) {
obj->dirty = 1;
obj->last_write_seqno = seqno;
list_move_tail(&obj->gpu_write_list,
&ring->gpu_write_list);
if (obj->pin_count) /* check for potential scanout */
intel_mark_busy(ring->dev, obj);
}

2
drivers/gpu/drm/i915/intel_ringbuffer.c
View File

@ -1002,7 +1002,6 @@ static int intel_init_ring_buffer(struct drm_device *dev,
ring->dev = dev;
INIT_LIST_HEAD(&ring->active_list);
INIT_LIST_HEAD(&ring->request_list);
INIT_LIST_HEAD(&ring->gpu_write_list);
ring->size = 32 * PAGE_SIZE;
init_waitqueue_head(&ring->irq_queue);
@ -1473,7 +1472,6 @@ int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size)
ring->dev = dev;
INIT_LIST_HEAD(&ring->active_list);
INIT_LIST_HEAD(&ring->request_list);
INIT_LIST_HEAD(&ring->gpu_write_list);
ring->size = size;
ring->effective_size = ring->size;

9
drivers/gpu/drm/i915/intel_ringbuffer.h
View File

@ -100,15 +100,6 @@ struct intel_ring_buffer {
*/
struct list_head request_list;
/**
* List of objects currently pending a GPU write flush.
*
* All elements on this list will belong to either the
* active_list or flushing_list, last_rendering_seqno can
* be used to differentiate between the two elements.
*/
struct list_head gpu_write_list;
/**
* Do we have some not yet emitted requests outstanding?
*/