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drm/i915: remove do_retire from i915_wait_request

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This originates from a hack by me to quickly fix a bug in an earlier
patch where we needed control over whether or not waiting on a seqno
actually did any retire list processing. Since the two operations aren't
clearly related, we should pull the parameter out of the wait function,
and make the caller responsible for retiring if the action is desired.

The only function call site which did not get an explicit retire_request call
(on purpose) is i915_gem_inactive_shrink(). That code was already calling
retire_request a second time.

v2: don't modify any behavior excepit i915_gem_inactive_shrink(Daniel)

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ben Widawsky 2012-04-26 16:02:58 -07:00 committed by Daniel Vetter
parent 507432986c
commit b2da9fe5d5
8 changed files with 37 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/i915/i915_dma.c
View File

@ -2009,9 +2009,10 @@ int i915_driver_unload(struct drm_device *dev)
unregister_shrinker(&dev_priv->mm.inactive_shrinker); unregister_shrinker(&dev_priv->mm.inactive_shrinker);
mutex_lock(&dev->struct_mutex); mutex_lock(&dev->struct_mutex);
ret = i915_gpu_idle(dev, true); ret = i915_gpu_idle(dev);
if (ret) if (ret)
DRM_ERROR("failed to idle hardware: %d\n", ret); DRM_ERROR("failed to idle hardware: %d\n", ret);
i915_gem_retire_requests(dev);
mutex_unlock(&dev->struct_mutex); mutex_unlock(&dev->struct_mutex);
/* Cancel the retire work handler, which should be idle now. */ /* Cancel the retire work handler, which should be idle now. */

5
drivers/gpu/drm/i915/i915_drv.h
View File

@ -1297,14 +1297,13 @@ int __must_check i915_gem_init_hw(struct drm_device *dev);
void i915_gem_init_swizzling(struct drm_device *dev); void i915_gem_init_swizzling(struct drm_device *dev);
void i915_gem_init_ppgtt(struct drm_device *dev); void i915_gem_init_ppgtt(struct drm_device *dev);
void i915_gem_cleanup_ringbuffer(struct drm_device *dev); void i915_gem_cleanup_ringbuffer(struct drm_device *dev);
int __must_check i915_gpu_idle(struct drm_device *dev, bool do_retire); int __must_check i915_gpu_idle(struct drm_device *dev);
int __must_check i915_gem_idle(struct drm_device *dev); int __must_check i915_gem_idle(struct drm_device *dev);
int __must_check i915_add_request(struct intel_ring_buffer *ring, int __must_check i915_add_request(struct intel_ring_buffer *ring,
struct drm_file *file, struct drm_file *file,
struct drm_i915_gem_request *request); struct drm_i915_gem_request *request);
int __must_check i915_wait_request(struct intel_ring_buffer *ring, int __must_check i915_wait_request(struct intel_ring_buffer *ring,
uint32_t seqno, uint32_t seqno);
bool do_retire);
int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf); int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
int __must_check int __must_check
i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj,

33
drivers/gpu/drm/i915/i915_gem.c
View File

@ -1825,8 +1825,7 @@ i915_gem_retire_work_handler(struct work_struct *work)
*/ */
int int
i915_wait_request(struct intel_ring_buffer *ring, i915_wait_request(struct intel_ring_buffer *ring,
uint32_t seqno, uint32_t seqno)
bool do_retire)
{ {
drm_i915_private_t *dev_priv = ring->dev->dev_private; drm_i915_private_t *dev_priv = ring->dev->dev_private;
u32 ier; u32 ier;
@ -1902,14 +1901,6 @@ i915_wait_request(struct intel_ring_buffer *ring,
if (atomic_read(&dev_priv->mm.wedged)) if (atomic_read(&dev_priv->mm.wedged))
ret = -EAGAIN; ret = -EAGAIN;
/* Directly dispatch request retiring. While we have the work queue
* to handle this, the waiter on a request often wants an associated
* buffer to have made it to the inactive list, and we would need
* a separate wait queue to handle that.
*/
if (ret == 0 && do_retire)
i915_gem_retire_requests_ring(ring);
return ret; return ret;
} }
@ -1931,10 +1922,10 @@ i915_gem_object_wait_rendering(struct drm_i915_gem_object *obj)
* it. * it.
*/ */
if (obj->active) { if (obj->active) {
ret = i915_wait_request(obj->ring, obj->last_rendering_seqno, ret = i915_wait_request(obj->ring, obj->last_rendering_seqno);
true);
if (ret) if (ret)
return ret; return ret;
i915_gem_retire_requests_ring(obj->ring);
} }
return 0; return 0;
@ -2117,7 +2108,7 @@ i915_gem_flush_ring(struct intel_ring_buffer *ring,
return 0; return 0;
} }
static int i915_ring_idle(struct intel_ring_buffer *ring, bool do_retire) static int i915_ring_idle(struct intel_ring_buffer *ring)
{ {
int ret; int ret;
@ -2131,18 +2122,17 @@ static int i915_ring_idle(struct intel_ring_buffer *ring, bool do_retire)
return ret; return ret;
} }
return i915_wait_request(ring, i915_gem_next_request_seqno(ring), return i915_wait_request(ring, i915_gem_next_request_seqno(ring));
do_retire);
} }
int i915_gpu_idle(struct drm_device *dev, bool do_retire) int i915_gpu_idle(struct drm_device *dev)
{ {
drm_i915_private_t *dev_priv = dev->dev_private; drm_i915_private_t *dev_priv = dev->dev_private;
int ret, i; int ret, i;
/* Flush everything onto the inactive list. */ /* Flush everything onto the inactive list. */
for (i = 0; i < I915_NUM_RINGS; i++) { for (i = 0; i < I915_NUM_RINGS; i++) {
ret = i915_ring_idle(&dev_priv->ring[i], do_retire); ret = i915_ring_idle(&dev_priv->ring[i]);
if (ret) if (ret)
return ret; return ret;
} }
@ -2331,9 +2321,7 @@ i915_gem_object_flush_fence(struct drm_i915_gem_object *obj)
} }
if (obj->last_fenced_seqno) { if (obj->last_fenced_seqno) {
ret = i915_wait_request(obj->ring, ret = i915_wait_request(obj->ring, obj->last_fenced_seqno);
obj->last_fenced_seqno,
false);
if (ret) if (ret)
return ret; return ret;
@ -3394,11 +3382,12 @@ i915_gem_idle(struct drm_device *dev)
return 0; return 0;
} }
ret = i915_gpu_idle(dev, true); ret = i915_gpu_idle(dev);
if (ret) { if (ret) {
mutex_unlock(&dev->struct_mutex); mutex_unlock(&dev->struct_mutex);
return ret; return ret;
} }
i915_gem_retire_requests(dev);
/* Under UMS, be paranoid and evict. */ /* Under UMS, be paranoid and evict. */
if (!drm_core_check_feature(dev, DRIVER_MODESET)) if (!drm_core_check_feature(dev, DRIVER_MODESET))
@ -4025,7 +4014,7 @@ rescan:
* This has a dramatic impact to reduce the number of * This has a dramatic impact to reduce the number of
* OOM-killer events whilst running the GPU aggressively. * OOM-killer events whilst running the GPU aggressively.
*/ */
if (i915_gpu_idle(dev, true) == 0) if (i915_gpu_idle(dev) == 0)
goto rescan; goto rescan;
} }
mutex_unlock(&dev->struct_mutex); mutex_unlock(&dev->struct_mutex);

15
drivers/gpu/drm/i915/i915_gem_evict.c
View File

@ -168,7 +168,7 @@ i915_gem_evict_everything(struct drm_device *dev, bool purgeable_only)
drm_i915_private_t *dev_priv = dev->dev_private; drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj, *next; struct drm_i915_gem_object *obj, *next;
bool lists_empty; bool lists_empty;
int ret; int ret,i;
lists_empty = (list_empty(&dev_priv->mm.inactive_list) && lists_empty = (list_empty(&dev_priv->mm.inactive_list) &&
list_empty(&dev_priv->mm.flushing_list) && list_empty(&dev_priv->mm.flushing_list) &&
@ -178,11 +178,20 @@ i915_gem_evict_everything(struct drm_device *dev, bool purgeable_only)
trace_i915_gem_evict_everything(dev, purgeable_only); trace_i915_gem_evict_everything(dev, purgeable_only);
/* Flush everything (on to the inactive lists) and evict */ ret = i915_gpu_idle(dev);
ret = i915_gpu_idle(dev, true);
if (ret) if (ret)
return ret; return ret;
/* The gpu_idle will flush everything in the write domain to the
* active list. Then we must move everything off the active list
* with retire requests.
*/
for (i = 0; i < I915_NUM_RINGS; i++)
if (WARN_ON(!list_empty(&dev_priv->ring[i].gpu_write_list)))
return -EBUSY;
i915_gem_retire_requests(dev);
BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); BUG_ON(!list_empty(&dev_priv->mm.flushing_list));
/* Having flushed everything, unbind() should never raise an error */ /* Having flushed everything, unbind() should never raise an error */

3
drivers/gpu/drm/i915/i915_gem_execbuffer.c
View File

@ -1220,9 +1220,10 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
* so every billion or so execbuffers, we need to stall * so every billion or so execbuffers, we need to stall
* the GPU in order to reset the counters. * the GPU in order to reset the counters.
*/ */
ret = i915_gpu_idle(dev, true); ret = i915_gpu_idle(dev);
if (ret) if (ret)
goto err; goto err;
i915_gem_retire_requests(dev);
BUG_ON(ring->sync_seqno[i]); BUG_ON(ring->sync_seqno[i]);
} }

2
drivers/gpu/drm/i915/i915_gem_gtt.c
View File

@ -317,7 +317,7 @@ static bool do_idling(struct drm_i915_private *dev_priv)
if (unlikely(dev_priv->mm.gtt->do_idle_maps)) { if (unlikely(dev_priv->mm.gtt->do_idle_maps)) {
dev_priv->mm.interruptible = false; dev_priv->mm.interruptible = false;
if (i915_gpu_idle(dev_priv->dev, false)) { if (i915_gpu_idle(dev_priv->dev)) {
DRM_ERROR("Couldn't idle GPU\n"); DRM_ERROR("Couldn't idle GPU\n");
/* Wait a bit, in hopes it avoids the hang */ /* Wait a bit, in hopes it avoids the hang */
udelay(10); udelay(10);

8
drivers/gpu/drm/i915/intel_overlay.c
View File

@ -225,10 +225,10 @@ static int intel_overlay_do_wait_request(struct intel_overlay *overlay,
} }
overlay->last_flip_req = request->seqno; overlay->last_flip_req = request->seqno;
overlay->flip_tail = tail; overlay->flip_tail = tail;
ret = i915_wait_request(LP_RING(dev_priv), overlay->last_flip_req, ret = i915_wait_request(LP_RING(dev_priv), overlay->last_flip_req);
true);
if (ret) if (ret)
return ret; return ret;
i915_gem_retire_requests(dev);
overlay->last_flip_req = 0; overlay->last_flip_req = 0;
return 0; return 0;
@ -447,10 +447,10 @@ static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay)
if (overlay->last_flip_req == 0) if (overlay->last_flip_req == 0)
return 0; return 0;
ret = i915_wait_request(LP_RING(dev_priv), overlay->last_flip_req, ret = i915_wait_request(LP_RING(dev_priv), overlay->last_flip_req);
true);
if (ret) if (ret)
return ret; return ret;
i915_gem_retire_requests(dev);
if (overlay->flip_tail) if (overlay->flip_tail)
overlay->flip_tail(overlay); overlay->flip_tail(overlay);

4
drivers/gpu/drm/i915/intel_ringbuffer.c
View File

@ -1088,9 +1088,11 @@ static int intel_ring_wait_seqno(struct intel_ring_buffer *ring, u32 seqno)
was_interruptible = dev_priv->mm.interruptible; was_interruptible = dev_priv->mm.interruptible;
dev_priv->mm.interruptible = false; dev_priv->mm.interruptible = false;
ret = i915_wait_request(ring, seqno, true); ret = i915_wait_request(ring, seqno);
dev_priv->mm.interruptible = was_interruptible; dev_priv->mm.interruptible = was_interruptible;
if (!ret)
i915_gem_retire_requests_ring(ring);
return ret; return ret;
} }