patch 'dma/idxd: configure maximum batch size to high value' has been queued to stable release 20.11.5

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 20.11.5

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 03/02/22. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/b56b636c578096b20d33290a549bd0d14dc39c56

Thanks.

Luca Boccassi

---
>From b56b636c578096b20d33290a549bd0d14dc39c56 Mon Sep 17 00:00:00 2001
From: Bruce Richardson <bruce.richardson at intel.com>
Date: Wed, 16 Feb 2022 16:06:08 +0000
Subject: [PATCH] dma/idxd: configure maximum batch size to high value

[ upstream commit 6a87d036a7ced87ba39406032c42ec2749b2cb88 ]

When configuring an Intel DSA instance using the utility script
dpdk_idxd_cfg.py, explicitly set the max supported batch size value to a
high value, to ensure large bursts are supported if so desired. The
default in the linux kernel is now just 32 [1], which may not be
sufficient for all DPDK apps.

[1] https://lore.kernel.org/r/163528473483.3926048.7950067926287180976.stgit@djiang5-desk3.ch.intel.com

Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
Reviewed-by: Kevin Laatz <kevin.laatz at intel.com>
---
 drivers/raw/ioat/dpdk_idxd_cfg.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/raw/ioat/dpdk_idxd_cfg.py b/drivers/raw/ioat/dpdk_idxd_cfg.py
index e999a27d45..6d6d3a801b 100755
--- a/drivers/raw/ioat/dpdk_idxd_cfg.py
+++ b/drivers/raw/ioat/dpdk_idxd_cfg.py
@@ -63,6 +63,7 @@ def configure_dsa(dsa_id, queues):
                              "mode": "dedicated",
                              "name": f"dpdk_wq{dsa_id}.{q}",
                              "priority": 1,
+                             "max_batch_size": 1024,
                              "size": int(max_work_queues_size / nb_queues)})
 
     # enable device and then queues
-- 
2.30.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2022-02-28 21:17:54.948502419 +0000
+++ 0012-dma-idxd-configure-maximum-batch-size-to-high-value.patch	2022-02-28 21:17:53.816928705 +0000
@@ -1 +1 @@
-From 6a87d036a7ced87ba39406032c42ec2749b2cb88 Mon Sep 17 00:00:00 2001
+From b56b636c578096b20d33290a549bd0d14dc39c56 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 6a87d036a7ced87ba39406032c42ec2749b2cb88 ]
+
@@ -14,2 +15,0 @@
-Cc: stable at dpdk.org
-
@@ -19 +19 @@
- drivers/dma/idxd/dpdk_idxd_cfg.py | 1 +
+ drivers/raw/ioat/dpdk_idxd_cfg.py | 1 +
@@ -22,5 +22,5 @@
-diff --git a/drivers/dma/idxd/dpdk_idxd_cfg.py b/drivers/dma/idxd/dpdk_idxd_cfg.py
-index 34537cb980..3f5d5ee752 100755
---- a/drivers/dma/idxd/dpdk_idxd_cfg.py
-+++ b/drivers/dma/idxd/dpdk_idxd_cfg.py
-@@ -89,6 +89,7 @@ def configure_dsa(dsa_id, queues, prefix):
+diff --git a/drivers/raw/ioat/dpdk_idxd_cfg.py b/drivers/raw/ioat/dpdk_idxd_cfg.py
+index e999a27d45..6d6d3a801b 100755
+--- a/drivers/raw/ioat/dpdk_idxd_cfg.py
++++ b/drivers/raw/ioat/dpdk_idxd_cfg.py
+@@ -63,6 +63,7 @@ def configure_dsa(dsa_id, queues):
@@ -28 +28 @@
-                              "name": f"{prefix}_wq{dsa_id}.{q}",
+                              "name": f"dpdk_wq{dsa_id}.{q}",