Thread (8 messages) 8 messages, 5 authors, 2021-08-23

Re: [dpdk-dev] [PATCH] doc: abstract the behaviour of rte_ctrl_thread_create

From: Honnappa Nagarahalli <hidden>
Date: 2021-08-03 15:49:21

<snip>

Hi Olivier,
	Any comments on this?

Thanks,
Honnappa
quoted
quoted
The current expected behaviour of the function
rte_ctrl_thread_create is rigid which makes the implementation of the
function complex.
quoted
quoted
Make the expected behaviour abstract to allow for simplified
implementation.

With this change, the calls to pthread_setaffinity_np can be moved
to the control thread. This will avoid the use of
pthread_barrier_wait and simplify the synchronization mechanism
between rte_ctrl_thread_create and the calling thread.

Signed-off-by: Honnappa Nagarahalli <redacted>
---
Possible patch is at:
http://patches.dpdk.org/project/dpdk/patch/20210730213709.19400-1-
honnappa.nagarahalli@arm.com/

 doc/guides/rel_notes/deprecation.rst | 7 +++++++
 1 file changed, 7 insertions(+)
diff --git a/doc/guides/rel_notes/deprecation.rst
b/doc/guides/rel_notes/deprecation.rst
index 9584d6bfd7..1960e3c8bf 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -11,6 +11,13 @@ here.
 Deprecation Notices
 -------------------

+* eal: The expected behaviour of the function
+``rte_ctrl_thread_create``
+  abstracted to allow for simplified implementation. The new
+behaviour is
+  as follows:
+  Creates a control thread with the given name. The affinity of the
+new
+  thread is based on the CPU affinity retrieved at the time
+rte_eal_init()
+  was called, the dataplane and service lcores are then excluded.
+
 * kvargs: The function ``rte_kvargs_process`` will get a new parameter
   for returning key match count. It will ease handling of no-match case.

--
2.17.1
Acked-by: Ruifeng Wang <redacted>
Acked-by: Jerin Jacob <redacted>
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