X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Fprog_guide%2Fdmadev.rst;h=77863f80280ba530505320ce253317450aff951c;hb=3a929df1f28684c6ba2dd2151a39eb232f95f4ed;hp=30734f3a36ecfd3f2a74a5b75659fc809cd9546f;hpb=3d36a0a1c7de59c40ccbec68b532d698aff2bcd8;p=dpdk.git

diff --git a/doc/guides/prog_guide/dmadev.rst b/doc/guides/prog_guide/dmadev.rst
index 30734f3a36..77863f8028 100644
--- a/doc/guides/prog_guide/dmadev.rst
+++ b/doc/guides/prog_guide/dmadev.rst
@@ -107,3 +107,14 @@ completed operations along with the status of each operation (filled into the
 ``status`` array passed by user). These two APIs can also return the last
 completed operation's ``ring_idx`` which could help user track operations within
 their own application-defined rings.
+
+
+Querying Device Statistics
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The statistics from a dmadev device can be got via the statistics functions,
+i.e. ``rte_dma_stats_get()``. The statistics returned for each device instance are:
+
+* ``submitted``: The number of operations submitted to the device.
+* ``completed``: The number of operations which have completed (successful and failed).
+* ``errors``: The number of operations that completed with error.