[RFC Patch v3 0/3] I2C statistics as sysfs attributes
suichen at google.com
Wed Dec 22 04:43:41 AEDT 2021
Add I2C statistics (transaction, bus error and NACK counts) as sysfs
attributes for a stable and unified API.
The motivation is monitoring large numbers of BMCs at scale.
Monitoring will be done using OpenBMC, which includes a Redfish
implementation (bmcweb) and runs on different SoCs.
OpenBMC has distribution-wide DBus C++ bindings, for which I2C
statistics will be added. For the Redfish schemas, the upcoming
Release 2021.4 will include I2C statistics too.
Since both OpenBMC and Redfish have/will have committed to stable
APIs for monitoring I2C statistics, we would like to learn the
kernel community's opinion on stable kernel APIs for I2C counters.
A more detailed explanation could be found in .
This version (v3) fixes format errors, potential unchecked memory
allocation, and fixes a build problem found by the Kernel Test Robot.
Sui Chen (2):
i2c debug counters as sysfs attributes
add npcm7xx debug counters as sysfs attributes
Tali Perry (1):
i2c: npcm7xx: add tx_complete counter
drivers/i2c/busses/i2c-npcm7xx.c | 13 ++++
drivers/i2c/i2c-core-base.c | 23 ++++++
drivers/i2c/i2c-dev.c | 124 +++++++++++++++++++++++++++++++
include/linux/i2c.h | 28 +++++++
4 files changed, 188 insertions(+)
More information about the openbmc