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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-05-04 16:08:45 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-05-04 17:40:38 +0300 |
| commit | 95aebcb2da73079f9ecb7f4e353af71ff1f04c05 (patch) | |
| tree | f30a90272fa56d732bec4b3091c26539b619fc87 /drivers/gpu/drm/i915/intel_ringbuffer.c | |
| parent | 605d5b3297687cce9d3c4298c699188e61486a4c (diff) | |
| download | linux-95aebcb2da73079f9ecb7f4e353af71ff1f04c05.tar.xz | |
drm/i915: Report the ring->space from intel_ring_update_space()
Some callers immediately want to know the current ring->space after
calling intel_ring_update_space(), which we can freely provide via the
return parameter.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170504130846.4807-2-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 46f2696bf886..b308e73fcfae 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -52,9 +52,14 @@ static unsigned int __intel_ring_space(unsigned int head, return (head - tail - CACHELINE_BYTES) & (size - 1); } -void intel_ring_update_space(struct intel_ring *ring) +unsigned int intel_ring_update_space(struct intel_ring *ring) { - ring->space = __intel_ring_space(ring->head, ring->emit, ring->size); + unsigned int space; + + space = __intel_ring_space(ring->head, ring->emit, ring->size); + + ring->space = space; + return space; } static int @@ -1659,8 +1664,7 @@ static int wait_for_space(struct drm_i915_gem_request *req, int bytes) lockdep_assert_held(&req->i915->drm.struct_mutex); - intel_ring_update_space(ring); - if (ring->space >= bytes) + if (intel_ring_update_space(ring) >= bytes) return 0; /* |