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drm/i915: Only emit flushes on active rings. 

This avoids the excess flush and requests on idle rings (and spamming
the debug log ;-)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Chris Wilson 2010-08-04 13:55:32 +01:00 committed by Eric Anholt
parent e044218a8e
commit 88f356b725
2 changed files with 19 additions and 10 deletions
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3
drivers/gpu/drm/i915/i915_drv.h
View File

@ -285,6 +285,9 @@ typedef struct drm_i915_private {
unsigned int sr01, adpa, ppcr, dvob, dvoc, lvds;
int vblank_pipe;
int num_pipe;
u32 flush_rings;
#define FLUSH_RENDER_RING 0x1
#define FLUSH_BSD_RING 0x2
/* For hangcheck timer */
#define DRM_I915_HANGCHECK_PERIOD 75 /* in jiffies */

26
drivers/gpu/drm/i915/i915_gem.c
View File

@ -3117,6 +3117,7 @@ static void
i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj)
{
struct drm_device *dev = obj->dev;
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
uint32_t invalidate_domains = 0;
uint32_t flush_domains = 0;
@ -3179,6 +3180,13 @@ i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj)
obj->pending_write_domain = obj->write_domain;
obj->read_domains = obj->pending_read_domains;
if (flush_domains & I915_GEM_GPU_DOMAINS) {
if (obj_priv->ring == &dev_priv->render_ring)
dev_priv->flush_rings |= FLUSH_RENDER_RING;
else if (obj_priv->ring == &dev_priv->bsd_ring)
dev_priv->flush_rings |= FLUSH_BSD_RING;
}
dev->invalidate_domains |= invalidate_domains;
dev->flush_domains |= flush_domains;
#if WATCH_BUF
@ -3718,7 +3726,6 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
ring = &dev_priv->render_ring;
}
if (args->buffer_count < 1) {
DRM_ERROR("execbuf with %d buffers\n", args->buffer_count);
return -EINVAL;
@ -3892,6 +3899,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
*/
dev->invalidate_domains = 0;
dev->flush_domains = 0;
dev_priv->flush_rings = 0;
for (i = 0; i < args->buffer_count; i++) {
struct drm_gem_object *obj = object_list[i];
@ -3912,16 +3920,14 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
i915_gem_flush(dev,
dev->invalidate_domains,
dev->flush_domains);
if (dev->flush_domains & I915_GEM_GPU_DOMAINS) {
if (dev_priv->flush_rings & FLUSH_RENDER_RING)
(void)i915_add_request(dev, file_priv,
dev->flush_domains,
&dev_priv->render_ring);
if (HAS_BSD(dev))
(void)i915_add_request(dev, file_priv,
dev->flush_domains,
&dev_priv->bsd_ring);
}
dev->flush_domains,
&dev_priv->render_ring);
if (dev_priv->flush_rings & FLUSH_BSD_RING)
(void)i915_add_request(dev, file_priv,
dev->flush_domains,
&dev_priv->bsd_ring);
}
for (i = 0; i < args->buffer_count; i++) {