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dma/idxd: configure maximum batch size to high value

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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

Cc: stable@dpdk.org

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
This commit is contained in:
Bruce Richardson 2022-02-16 16:06:08 +00:00 committed by Thomas Monjalon
parent 727e6b7840
commit 6a87d036a7
1 changed files with 1 additions and 0 deletions
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drivers/dma/idxd/dpdk_idxd_cfg.py
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@ -89,6 +89,7 @@ def configure_dsa(dsa_id, queues, prefix):
"mode": "dedicated",
"name": f"{prefix}_wq{dsa_id}.{q}",
"priority": 1,
"max_batch_size": 1024,
"size": int(max_work_queues_size / nb_queues)})
# enable device and then queues