From: Sui Chen <suichen@google.com>
To: linux-kernel@vger.kernel.org
Cc: linux-i2c@vger.kernel.org, openbmc@lists.ozlabs.org,
joel@jms.id.au, andrew@aj.id.au, tali.perry1@gmail.com,
benjaminfair@google.com, krellan@google.com,
Sui Chen <suichen@google.com>
Subject: [RFC Patch v3 0/3] I2C statistics as sysfs attributes
Date: Tue, 21 Dec 2021 09:43:41 -0800 [thread overview]
Message-ID: <20211221174344.1249202-1-suichen@google.com> (raw)
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 [1].
This version (v3) fixes format errors, potential unchecked memory
allocation, and fixes a build problem found by the Kernel Test Robot.
Thanks!
[1] https://lore.kernel.org/lkml/CAJOps0u=seskB-YGvLBsHantJohkEX7do-mt7YSZ6zChQMQxbg@mail.gmail.com/
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(+)
--
2.34.1.307.g9b7440fafd-goog
next reply other threads:[~2021-12-21 17:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-21 17:43 Sui Chen [this message]
2021-12-21 17:43 ` [RFC Patch v3 1/3] i2c debug counters as sysfs attributes Sui Chen
2022-02-07 13:01 ` Wolfram Sang
2021-12-21 17:43 ` [RFC Patch v3 2/3] i2c: npcm7xx: add tx_complete counter Sui Chen
2021-12-21 17:43 ` [RFC Patch v3 3/3] add npcm7xx debug counters as sysfs attributes Sui Chen
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