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* [dpdk-dev] [PATCH] doc: announce ABI change for ring structure
@ 2017-09-11 13:39 Olivier Matz
  2017-09-18  9:16 ` Bruce Richardson
                   ` (3 more replies)
  0 siblings, 4 replies; 7+ messages in thread
From: Olivier Matz @ 2017-09-11 13:39 UTC (permalink / raw)
  To: dev; +Cc: bruce.richardson, john.mcnamara, daniel.verkamp, konstantin.ananyev

As discussed on the mailing list, the alignment constraint of
the ring structure can be relaxed.

Link: http://dpdk.org/dev/patchwork/patch/25039
Link: http://dpdk.org/dev/patchwork/patch/26103

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---
 doc/guides/rel_notes/deprecation.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 3362f3350..5a63c0277 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -120,3 +120,9 @@ Deprecation Notices
   The non-"do-sig" versions of the hash tables will be removed
   (including the ``signature_offset`` parameter)
   and the "do-sig" versions renamed accordingly.
+
+* ring: The alignment constraints on the ring structure will be relaxed
+  to one cache line instead of two, and an empty cache line padding will
+  be added between the producer and consumer structures. The size of the
+  structure and the offset of the fields will remain the same on
+  platforms with 64B cache line, but will change on other platforms.
-- 
2.11.0

^ permalink raw reply	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2018-01-17 21:08 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-09-11 13:39 [dpdk-dev] [PATCH] doc: announce ABI change for ring structure Olivier Matz
2017-09-18  9:16 ` Bruce Richardson
2017-09-18  9:24 ` Mcnamara, John
2017-09-18  9:30 ` Burakov, Anatoly
2017-12-08 14:14 ` Olivier MATZ
2017-12-08 17:01   ` Thomas Monjalon
2018-01-17 21:07     ` Thomas Monjalon

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