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drm/ttm: allow reserving more than one shared slot v3

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Let's support simultaneous submissions to multiple engines.

v2: rename the field to num_shared and fix up all users
v3: rebased

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2018-09-19 16:25:08 +02:00
committed by Alex Deucher
parent c50fe0c5b1
commit a9f34c70fd
14 changed files with 35 additions and 30 deletions
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12
drivers/gpu/drm/ttm/ttm_execbuf_util.c
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@@ -126,10 +126,11 @@ int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
}
if (!ret) {
if (!entry->shared)
if (!entry->num_shared)
continue;
ret = reservation_object_reserve_shared(bo->resv, 1);
ret = reservation_object_reserve_shared(bo->resv,
entry->num_shared);
if (!ret)
continue;
}
@@ -150,8 +151,9 @@ int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
}
}
if (!ret && entry->shared)
ret = reservation_object_reserve_shared(bo->resv, 1);
if (!ret && entry->num_shared)
ret = reservation_object_reserve_shared(bo->resv,
entry->num_shared);
if (unlikely(ret != 0)) {
if (ret == -EINTR)
@@ -199,7 +201,7 @@ void ttm_eu_fence_buffer_objects(struct ww_acquire_ctx *ticket,
list_for_each_entry(entry, list, head) {
bo = entry->bo;
if (entry->shared)
if (entry->num_shared)
reservation_object_add_shared_fence(bo->resv, fence);
else
reservation_object_add_excl_fence(bo->resv, fence);