[v2] vfio: Add migration pre-copy support and device dirty tracking

[PATCH v2 08/20] util: Add iova_tree_nnodes()

Avihai Horon posted 20 patches 2 years, 11 months ago

Diff against v1
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Maintainers: Alex Williamson <alex.williamson@redhat.com>, "Cédric Le Goater" <clg@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Peter Xu <peterx@redhat.com>, Jason Wang <jasowang@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Paolo Bonzini <pbonzini@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, Eduardo Habkost <eduardo@habkost.net>, Halil Pasic <pasic@linux.ibm.com>, Christian Borntraeger <borntraeger@linux.ibm.com>, Eric Farman <farman@linux.ibm.com>, Thomas Huth <thuth@redhat.com>, David Hildenbrand <david@redhat.com>, Ilya Leoshkevich <iii@linux.ibm.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Juan Quintela <quintela@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, Eric Blake <eblake@redhat.com>, Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>, John Snow <jsnow@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, Fam Zheng <fam@euphon.net>

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[PATCH v2 08/20] util: Add iova_tree_nnodes()

Posted by Avihai Horon 2 years, 11 months ago

From: Joao Martins <joao.m.martins@oracle.com>

Add iova_tree_nnodes() which returns the number of nodes in the IOVA
tree.

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Acked-by: Peter Xu <peterx@redhat.com>
---
 include/qemu/iova-tree.h | 11 +++++++++++
 util/iova-tree.c         |  5 +++++
 2 files changed, 16 insertions(+)

diff --git a/include/qemu/iova-tree.h b/include/qemu/iova-tree.h
index 8528e5c98f..7bb80783ce 100644
--- a/include/qemu/iova-tree.h
+++ b/include/qemu/iova-tree.h
@@ -164,4 +164,15 @@ int iova_tree_alloc_map(IOVATree *tree, DMAMap *map, hwaddr iova_begin,
  */
 void iova_tree_destroy(IOVATree *tree);
 
+/**
+ * iova_tree_nnodes:
+ *
+ * @tree: the iova tree to consult
+ *
+ * Returns the number of nodes in the iova tree
+ *
+ * Return: >=0 for the number of nodes.
+ */
+gint iova_tree_nnodes(IOVATree *tree);
+
 #endif
diff --git a/util/iova-tree.c b/util/iova-tree.c
index 536789797e..6141a6229b 100644
--- a/util/iova-tree.c
+++ b/util/iova-tree.c
@@ -280,3 +280,8 @@ void iova_tree_destroy(IOVATree *tree)
     g_tree_destroy(tree->tree);
     g_free(tree);
 }
+
+gint iova_tree_nnodes(IOVATree *tree)
+{
+    return g_tree_nnodes(tree->tree);
+}
-- 
2.26.3