diff options
Diffstat (limited to 'Documentation/ABI/testing/debugfs-driver-qat')
| -rw-r--r-- | Documentation/ABI/testing/debugfs-driver-qat | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/debugfs-driver-qat b/Documentation/ABI/testing/debugfs-driver-qat index b2db010d85..bd6793760f 100644 --- a/Documentation/ABI/testing/debugfs-driver-qat +++ b/Documentation/ABI/testing/debugfs-driver-qat @@ -81,3 +81,29 @@ Description: (RO) Read returns, for each Acceleration Engine (AE), the number <N>: Number of Compress and Verify (CnV) errors and type of the last CnV error detected by Acceleration Engine N. + +What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/inject_error +Date: March 2024 +KernelVersion: 6.8 +Contact: qat-linux@intel.com +Description: (WO) Write to inject an error that simulates an heartbeat + failure. This is to be used for testing purposes. + + After writing this file, the driver stops arbitration on a + random engine and disables the fetching of heartbeat counters. + If a workload is running on the device, a job submitted to the + accelerator might not get a response and a read of the + `heartbeat/status` attribute might report -1, i.e. device + unresponsive. + The error is unrecoverable thus the device must be restarted to + restore its functionality. + + This attribute is available only when the kernel is built with + CONFIG_CRYPTO_DEV_QAT_ERROR_INJECTION=y. + + A write of 1 enables error injection. + + The following example shows how to enable error injection:: + + # cd /sys/kernel/debug/qat_<device>_<BDF> + # echo 1 > heartbeat/inject_error |