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Cache related tests (like CAT and CMT) depend on a variable called no_of_bits to run. no_of_bits defines the number of contiguous bits that should be set in the CBM mask and a user can pass a value for no_of_bits using -n command line argument. If a user hasn't passed any value, it defaults to 5 (randomly chosen value). Hard coding no_of_bits to 5 will make the cache tests fail to run on systems that support maximum cbm mask that is less than or equal to 5 bits. Hence, don't hard code no_of_bits value. If a user passes a value for "no_of_bits" using -n option, use it. Otherwise, no_of_bits is equal to half of the maximum number of bits in the cbm mask. Please note that CMT test is still hard coded to 5 bits. It will change in subsequent patches that change CMT test. Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.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.