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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-03-21 13:25:52 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-03-21 17:21:50 +0300 |
| commit | fe085f13c7901203445fd2ab26c0f499313b8258 (patch) | |
| tree | c960eafb07e11a856cb325ca82e71f45140f040b /drivers/gpu/drm/i915/intel_ringbuffer.c | |
| parent | 899f6204c0f8117d33226e586d3a630b3cf9bce0 (diff) | |
| download | linux-fe085f13c7901203445fd2ab26c0f499313b8258.tar.xz | |
drm/i915: Remove intel_ring.last_retired_head
Storing the position of the breadcrumb of the last retired request as
a separate last_retired_head is superfluous as we always copy that into
head prior to recalculation of the intel_ring.space.
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/20170321102552.24357-1-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 | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index d9b8d17c3fc6..0ca5ea7a9407 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -49,13 +49,7 @@ static int __intel_ring_space(int head, int tail, int size) void intel_ring_update_space(struct intel_ring *ring) { - if (ring->last_retired_head != -1) { - ring->head = ring->last_retired_head; - ring->last_retired_head = -1; - } - - ring->space = __intel_ring_space(ring->head & HEAD_ADDR, - ring->tail, ring->size); + ring->space = __intel_ring_space(ring->head, ring->tail, ring->size); } static int @@ -618,12 +612,8 @@ static void reset_ring_common(struct intel_engine_cs *engine, } /* If the rq hung, jump to its breadcrumb and skip the batch */ - if (request->fence.error == -EIO) { - struct intel_ring *ring = request->ring; - - ring->head = request->postfix; - ring->last_retired_head = -1; - } + if (request->fence.error == -EIO) + request->ring->head = request->postfix; } else { engine->legacy_active_context = NULL; } @@ -1392,7 +1382,6 @@ intel_engine_create_ring(struct intel_engine_cs *engine, int size) if (IS_I830(engine->i915) || IS_I845G(engine->i915)) ring->effective_size -= 2 * CACHELINE_BYTES; - ring->last_retired_head = -1; intel_ring_update_space(ring); vma = intel_ring_create_vma(engine->i915, size); @@ -1571,10 +1560,8 @@ void intel_legacy_submission_resume(struct drm_i915_private *dev_priv) struct intel_engine_cs *engine; enum intel_engine_id id; - for_each_engine(engine, dev_priv, id) { + for_each_engine(engine, dev_priv, id) engine->buffer->head = engine->buffer->tail; - engine->buffer->last_retired_head = -1; - } } static int ring_request_alloc(struct drm_i915_gem_request *request) |