What: /sys/kernel/debug/nx-crypto/*
Date: March 2012
KernelVersion: 3.4
Contact: Kent Yoder <[email protected]>
Description:
These debugfs interfaces are built by the nx-crypto driver, built in
arch/powerpc/crypto/nx.
Error Detection
===============
errors:
A u32 providing a total count of errors since the driver was loaded. The
only errors counted here are those returned from the hcall, H_COP_OP.
last_error:
The most recent non-zero return code from the H_COP_OP hcall. -EBUSY is not
recorded here (the hcall will retry until -EBUSY goes away).
last_error_pid:
The process ID of the process who received the most recent error from the
hcall.
Device Use
==========
aes_bytes:
The total number of bytes encrypted using AES in any of the driver's
supported modes.
aes_ops:
The total number of AES operations submitted to the hardware.
sha256_bytes:
The total number of bytes hashed by the hardware using SHA-256.
sha256_ops:
The total number of SHA-256 operations submitted to the hardware.
sha512_bytes:
The total number of bytes hashed by the hardware using SHA-512.
sha512_ops:
The total number of SHA-512 operations submitted to the hardware.
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