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* [dpdk-dev] [PATCH] raw/ioat: fix config script queue size calculation
@ 2021-07-16 13:21 Kevin Laatz
  2021-07-16 14:10 ` Ananyev, Konstantin
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Kevin Laatz @ 2021-07-16 13:21 UTC (permalink / raw)
  To: dev; +Cc: stable, bruce.richardson, konstantin.ananyev, Kevin Laatz

The queue size calculation is currently based on "max_tokens" rather than
"max_work_queues_size". This is resulting in the queue size being
incorrectly configured when using the script to configure devices bound to
the IDXD kernel driver.
This patch fixes this miscalculation so devices are configured with
appropriate queue size.

Fixes: 01863b9d2354 ("raw/ioat: include example configuration script")
Cc: stable@dpdk.org

Reported-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
---
 drivers/raw/ioat/dpdk_idxd_cfg.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/raw/ioat/dpdk_idxd_cfg.py b/drivers/raw/ioat/dpdk_idxd_cfg.py
index 83ef4817db..fcc27822ef 100755
--- a/drivers/raw/ioat/dpdk_idxd_cfg.py
+++ b/drivers/raw/ioat/dpdk_idxd_cfg.py
@@ -63,7 +63,7 @@ def configure_dsa(dsa_id, queues, prefix):
     max_groups = dsa_dir.read_int("max_groups")
     max_engines = dsa_dir.read_int("max_engines")
     max_queues = dsa_dir.read_int("max_work_queues")
-    max_tokens = dsa_dir.read_int("max_tokens")
+    max_work_queues_size = dsa_dir.read_int("max_work_queues_size")
 
     nb_queues = min(queues, max_queues)
     if queues > nb_queues:
@@ -82,7 +82,7 @@ def configure_dsa(dsa_id, queues, prefix):
                              "mode": "dedicated",
                              "name": f"{prefix}_wq{dsa_id}.{q}",
                              "priority": 1,
-                             "size": int(max_tokens / nb_queues)})
+                             "size": int(max_work_queues_size / nb_queues)})
 
     # enable device and then queues
     drv_dir.write_values({"bind": f"dsa{dsa_id}"})
-- 
2.25.1


^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2021-07-20 13:50 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2021-07-16 13:21 [dpdk-dev] [PATCH] raw/ioat: fix config script queue size calculation Kevin Laatz
2021-07-16 14:10 ` Ananyev, Konstantin
2021-07-16 14:25 ` Bruce Richardson
2021-07-20 13:50 ` [dpdk-dev] [dpdk-stable] " David Marchand

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