On Fri, Dec 22, 2023 at 11:35:04AM +0100, Lucas Segarra Fernandez wrote: > Expose through debugfs telemetry data for QAT GEN4 devices. > > This allows to gather metrics about the performance and the utilization > of a QAT device and/or a group of ring pairs. In particular, statistics > on (1) the utilization of the PCIe channel, (2) address translation and > device TLB, when SVA is enabled and (3) the internal engines for crypto > and data compression. > > The device periodically gathers telemetry data from hardware registers > and writes it into a DMA memory region which is sampled by the driver. > The driver then uses this data to compute basic metrics on the counters > and exposes them through debugfs attributes in the folder > /sys/kernel/debug/qat_<device>_<BDF>/telemetry. > > Here is a summary of the changes: > * Patch #1 adds an helper function to math.h to compute the average of > values within an array. > * Patch #2 includes a missing header in the file adf_accel_devices.h to > allow to use the macro GET_DEV(). > * Patch #3 introduces device level telemetry and the associated documentation > in /Documentation/ABI. > * Patch #4 extends #3 by introducing ring pair level telemetry and > documentation about it. > > This set is based on earlier work done by Wojciech Ziemba. > > --- > v1 -> v2: > - define avg_array() in the C file where it is used > - set `accel_dev->telemetry` to NULL in adf_tl_free_mem() > - add ring pair service type info to debugfs telemetry/rp_<X>_data output > --- > > Lucas Segarra Fernandez (4): > crypto: qat - include pci.h for GET_DEV() > crypto: qat - add admin msgs for telemetry > crypto: qat - add support for device telemetry > crypto: qat - add support for ring pair level telemetry > > .../ABI/testing/debugfs-driver-qat_telemetry | 228 ++++++ > .../intel/qat/qat_420xx/adf_420xx_hw_data.c | 3 + > .../intel/qat/qat_4xxx/adf_4xxx_hw_data.c | 3 + > drivers/crypto/intel/qat/qat_common/Makefile | 3 + > .../intel/qat/qat_common/adf_accel_devices.h | 6 + > .../crypto/intel/qat/qat_common/adf_admin.c | 37 + > .../crypto/intel/qat/qat_common/adf_admin.h | 4 + > .../crypto/intel/qat/qat_common/adf_dbgfs.c | 3 + > .../intel/qat/qat_common/adf_gen4_hw_data.h | 1 + > .../crypto/intel/qat/qat_common/adf_gen4_tl.c | 153 ++++ > .../crypto/intel/qat/qat_common/adf_gen4_tl.h | 158 ++++ > .../crypto/intel/qat/qat_common/adf_init.c | 12 + > .../intel/qat/qat_common/adf_telemetry.c | 288 +++++++ > .../intel/qat/qat_common/adf_telemetry.h | 99 +++ > .../intel/qat/qat_common/adf_tl_debugfs.c | 710 ++++++++++++++++++ > .../intel/qat/qat_common/adf_tl_debugfs.h | 117 +++ > .../qat/qat_common/icp_qat_fw_init_admin.h | 10 + > 17 files changed, 1835 insertions(+) > create mode 100644 Documentation/ABI/testing/debugfs-driver-qat_telemetry > create mode 100644 drivers/crypto/intel/qat/qat_common/adf_gen4_tl.c > create mode 100644 drivers/crypto/intel/qat/qat_common/adf_gen4_tl.h > create mode 100644 drivers/crypto/intel/qat/qat_common/adf_telemetry.c > create mode 100644 drivers/crypto/intel/qat/qat_common/adf_telemetry.h > create mode 100644 drivers/crypto/intel/qat/qat_common/adf_tl_debugfs.c > create mode 100644 drivers/crypto/intel/qat/qat_common/adf_tl_debugfs.h > > > base-commit: b4719435c14199548ed49f036a7c31040a6b5353 > -- > 2.41.0 All applied. Thanks. -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
