Am 28.10.21 um 12:02 schrieb Lucas Stach:
Am Montag, dem 25.10.2021 um 10:05 +0200 schrieb Christian König:
Instead of hand rolling the logic.

Signed-off-by: Christian König <christian.koe...@amd.com>
---
  drivers/gpu/drm/etnaviv/etnaviv_gem.c | 31 ++++++++++-----------------
  1 file changed, 11 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c 
b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
index 8f1b5af47dd6..0eeb33de2ff4 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
@@ -428,19 +428,17 @@ int etnaviv_gem_wait_bo(struct etnaviv_gpu *gpu, struct 
drm_gem_object *obj,
  static void etnaviv_gem_describe_fence(struct dma_fence *fence,
        const char *type, struct seq_file *m)
  {
-       if (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags))
-               seq_printf(m, "\t%9s: %s %s seq %llu\n",
-                          type,
-                          fence->ops->get_driver_name(fence),
-                          fence->ops->get_timeline_name(fence),
-                          fence->seqno);
+       seq_printf(m, "\t%9s: %s %s seq %llu\n", type,
+                  fence->ops->get_driver_name(fence),
+                  fence->ops->get_timeline_name(fence),
+                  fence->seqno);
Please just move this in the function below, it seems pretty pointless
now to have a separate function just to wrap the printf.

Good point, but I've already gone ahead and pushed this to drm-misc-next because I wanted to get the follow up stuff out of the door.

See the mailing lists for the next set of patches which also contains "[PATCH 3/4] drm/etnaviv: use dma_resv_describe".

That one provides an unified function in the dma_resv and dma_fence code for debugfs dumps of fences.

Can we get that one reviewed and upstream? I think it would be even cleaner :)

Thank a lot in advantage,
Christian.


Other than this nit, both patches are:
Reviewed-by: Lucas Stach <l.st...@pengutronix.de>

  }
static void etnaviv_gem_describe(struct drm_gem_object *obj, struct seq_file *m)
  {
        struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
        struct dma_resv *robj = obj->resv;
-       struct dma_resv_list *fobj;
+       struct dma_resv_iter cursor;
        struct dma_fence *fence;
        unsigned long off = drm_vma_node_start(&obj->vma_node);
@@ -449,21 +447,14 @@ static void etnaviv_gem_describe(struct drm_gem_object *obj, struct seq_file *m)
                        obj->name, kref_read(&obj->refcount),
                        off, etnaviv_obj->vaddr, obj->size);
- rcu_read_lock();
-       fobj = dma_resv_shared_list(robj);
-       if (fobj) {
-               unsigned int i, shared_count = fobj->shared_count;
-
-               for (i = 0; i < shared_count; i++) {
-                       fence = rcu_dereference(fobj->shared[i]);
+       dma_resv_iter_begin(&cursor, robj, true);
+       dma_resv_for_each_fence_unlocked(&cursor, fence) {
+               if (dma_resv_iter_is_exclusive(&cursor))
+                       etnaviv_gem_describe_fence(fence, "Exclusive", m);
+               else
                        etnaviv_gem_describe_fence(fence, "Shared", m);
-               }
        }
-
-       fence = dma_resv_excl_fence(robj);
-       if (fence)
-               etnaviv_gem_describe_fence(fence, "Exclusive", m);
-       rcu_read_unlock();
+       dma_resv_iter_end(&cursor);
  }
void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv,


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