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Information needed to debug driver problems and firmware faults is stored in the IOC’s MPT3SAS_ADAPTER data structure. Parameters such as IOCFacts, IOC flags (related to sge, MSI-X, error recovery etc.), performance mode type, TMs, internal commands reply status, etc. are present. For debugging purposes, it is therefore helpful to be able to capture this information so that the fault can be analyzed. Export the MPT3SAS_ADAPTER data structure in debugfs. The data is available in: /sys/kernel/debug/mpt3sas/scsi_hostX/ioc_dump Link: https://lore.kernel.org/r/1588056322-29227-1-git-send-email-suganath-prabu.subramani@broadcom.com Signed-off-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.