dd2690579f
Upon first calling read() on a debugfs file, invoke iwl_dbgfs_##name##_read and store the response buffer on the heap, so subsequent read() calls don't need to invoke said function again. This is done because cat etc will call read() repeatedly until EOF is reached (or read() returns 0), which in the current implementation will cause said function to be invoked multiple times. With the current implementation this can also cause buggy behavior in some weird edge cases where the first invocation returns a string of length n, and the second of length m>n: The last m-n characters of the second invocation will be printed to screen. Signed-off-by: Naftali Goldstein <naftali.goldstein@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.