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To support the HTT Stats DebugFS interface a single large buffer that contains the stats must be provided to the DebugFS infrastructure. In the current code, for each class of stats, the stats are first formatted in a local on-stack buffer, and then the local buffer is copied to the large DebugFS buffer. This logic has a problem when, for a given class, the formatted stats exceed the size of the on-stack buffer. When this occurs the stats for this class is truncated. In addition, this logic is inefficient since it introduces an unnecessary memory copy. To address these issues, update the logic to no longer use a local on-stack buffer, and instead write the formatted data directly into the large DebugFS buffer. Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.5.0.1-01105-QCAHKSWPL_SILICONZ-1 Signed-off-by: Seevalamuthu Mariappan <seevalam@codeaurora.org> Signed-off-by: Jouni Malinen <jouni@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20210913223148.208026-4-jouni@codeaurora.org
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.