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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-10-13 11:09:14 +0200 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-10-19 10:17:11 +0200 |
| commit | e60a0b107b3df072e23cb6d68510aa2615b059ce (patch) | |
| tree | 2cb350c6d8bd2a67bcb32b26e6d74808a86d042e /drivers/gpu | |
| parent | drm/i915: Fix GPIO pin to register mapping (diff) | |
| download | linux-e60a0b107b3df072e23cb6d68510aa2615b059ce.tar.xz linux-e60a0b107b3df072e23cb6d68510aa2615b059ce.zip | |
drm/i915: Sleep whilst waiting for the ring
If userspace is submitting so many long running batches that the ring
becomes full, throttle by sleeping for a 1ms before checking for free
space. Simply yielding was causing excessive scheduler overhead whilst
making no progress.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index d89b88791aac..89004a622f49 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -707,7 +707,7 @@ int intel_wait_ring_buffer(struct drm_device *dev, master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT; } - yield(); + msleep(1); } while (!time_after(jiffies, end)); trace_i915_ring_wait_end (dev); return -EBUSY; |