[RFC PATCH 37/42] drm/i915: Only track object dependencies on first request

[Matthew Brost]

Only track object dependencies on the first request generated from the
execbuf, this help with the upcoming multi-bb execbuf extension.

Signed-off-by: Matthew Brost <matthew.br...@intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c 
b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index fe3242f4f2e6..1a91e21132be 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -2239,7 +2239,7 @@ static int eb_relocate_parse(struct i915_execbuffer *eb)
        return err;
 }
 
-static int eb_move_to_gpu(struct i915_execbuffer *eb)
+static int eb_move_to_gpu(struct i915_execbuffer *eb, bool first)
 {
        const unsigned int count = eb->buffer_count;
        unsigned int i = count;
@@ -2281,7 +2281,7 @@ static int eb_move_to_gpu(struct i915_execbuffer *eb)
                                flags &= ~EXEC_OBJECT_ASYNC;
                }
 
-               if (err == 0 && !(flags & EXEC_OBJECT_ASYNC)) {
+               if (err == 0 && first && !(flags & EXEC_OBJECT_ASYNC)) {
                        err = i915_request_await_object
                                (eb->request, obj, flags & EXEC_OBJECT_WRITE);
                }
@@ -2525,14 +2525,15 @@ static int eb_parse(struct i915_execbuffer *eb)
        return err;
 }
 
-static int eb_submit(struct i915_execbuffer *eb, struct i915_vma *batch)
+static int eb_submit(struct i915_execbuffer *eb, struct i915_vma *batch,
+                    bool first)
 {
        int err;
 
        if (intel_context_nopreempt(eb->context))
                __set_bit(I915_FENCE_FLAG_NOPREEMPT, &eb->request->fence.flags);
 
-       err = eb_move_to_gpu(eb);
+       err = eb_move_to_gpu(eb, first);
        if (err)
                return err;
 
@@ -3304,7 +3305,7 @@ i915_gem_do_execbuffer(struct drm_device *dev,
                intel_gt_buffer_pool_mark_active(eb.batch_pool, eb.request);
 
        trace_i915_request_queue(eb.request, eb.batch_flags);
-       err = eb_submit(&eb, batch);
+       err = eb_submit(&eb, batch, true);
 
 err_request:
        i915_request_get(eb.request);
-- 
2.28.0