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drm/nouveau: use the new iterator in nouveau_fence_sync

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Simplifying the code a bit.

The new implementation unifies the handling between drivers and so
results in waiting for all shared fernces in all cases.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211005113742.1101-26-christian.koenig@amd.com
This commit is contained in:
Christian König 2021-06-16 09:20:56 +02:00
parent dd66f56cae
commit 40298cb450
1 changed files with 12 additions and 36 deletions
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48
drivers/gpu/drm/nouveau/nouveau_fence.c
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@ -339,14 +339,15 @@ nouveau_fence_wait(struct nouveau_fence *fence, bool lazy, bool intr)
}
int
nouveau_fence_sync(struct nouveau_bo *nvbo, struct nouveau_channel *chan, bool exclusive, bool intr)
nouveau_fence_sync(struct nouveau_bo *nvbo, struct nouveau_channel *chan,
bool exclusive, bool intr)
{
struct nouveau_fence_chan *fctx = chan->fence;
struct dma_fence *fence;
struct dma_resv *resv = nvbo->bo.base.resv;
struct dma_resv_list *fobj;
struct dma_resv_iter cursor;
struct dma_fence *fence;
struct nouveau_fence *f;
int ret = 0, i;
int ret;
if (!exclusive) {
ret = dma_resv_reserve_shared(resv, 1);
@ -355,10 +356,7 @@ nouveau_fence_sync(struct nouveau_bo *nvbo, struct nouveau_channel *chan, bool e
return ret;
}
fobj = dma_resv_shared_list(resv);
fence = dma_resv_excl_fence(resv);
if (fence) {
dma_resv_for_each_fence(&cursor, resv, exclusive, fence) {
struct nouveau_channel *prev = NULL;
bool must_wait = true;
@ -366,41 +364,19 @@ nouveau_fence_sync(struct nouveau_bo *nvbo, struct nouveau_channel *chan, bool e
if (f) {
rcu_read_lock();
prev = rcu_dereference(f->channel);
if (prev && (prev == chan || fctx->sync(f, prev, chan) == 0))
if (prev && (prev == chan ||
fctx->sync(f, prev, chan) == 0))
must_wait = false;
rcu_read_unlock();
}
if (must_wait)
if (must_wait) {
ret = dma_fence_wait(fence, intr);
return ret;
}
if (!exclusive || !fobj)
return ret;
for (i = 0; i < fobj->shared_count && !ret; ++i) {
struct nouveau_channel *prev = NULL;
bool must_wait = true;
fence = rcu_dereference_protected(fobj->shared[i],
dma_resv_held(resv));
f = nouveau_local_fence(fence, chan->drm);
if (f) {
rcu_read_lock();
prev = rcu_dereference(f->channel);
if (prev && (prev == chan || fctx->sync(f, prev, chan) == 0))
must_wait = false;
rcu_read_unlock();
if (ret)
return ret;
}
if (must_wait)
ret = dma_fence_wait(fence, intr);
}
return ret;
return 0;
}
void