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crypto: hisilicon - add device load query functionality to debugfs

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The accelerator device supports usage statistics. This patch enables
obtaining the accelerator's usage through the "dev_usage" file.
The returned number expressed as a percentage as a percentage.

Signed-off-by: Zongyu Wu <wuzongyu1@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Zongyu Wu
2026-03-13 17:40:39 +08:00
committed by Herbert Xu
parent 3414c80977
commit b44c7129f1
8 changed files with 135 additions and 0 deletions
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7
Documentation/ABI/testing/debugfs-hisi-sec
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@@ -24,6 +24,13 @@ Description: The <bdf> is related the function for PF and VF.
1/1000~1000/1000 of total QoS. The driver reading alg_qos to
get related QoS in the host and VM, Such as "cat alg_qos".
What: /sys/kernel/debug/hisi_sec2/<bdf>/dev_usage
Date: Mar 2026
Contact: linux-crypto@vger.kernel.org
Description: Query the real-time bandwidth usage of device.
Returns the bandwidth usage of each channel on the device.
The returned number is in percentage.
What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/qm_regs
Date: Oct 2019
Contact: linux-crypto@vger.kernel.org