This avoids the excess flush and requests on idle rings (and spamming
the debug log ;-)
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_drv.h | 3 +++
drivers/gpu/drm/i915/i915_gem.c | 26 ++++++++++++++++----------
2 files changed, 19 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 61a8c90..844d10e 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -286,6 +286,9 @@ 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 */
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index b2ff908..36d7e93 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2936,6 +2936,7 @@ 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;
@@ -2998,6 +2999,13 @@ 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
@@ -3536,7 +3544,6 @@ 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;
@@ -3710,6 +3717,7 @@ 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];
@@ -3730,16 +3738,14 @@ 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++) {
--
1.7.1
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