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d04013a4b2
"sched_itmt_enabled" was only introduced as a debug toggle for any funky ITMT behavior. Move the sysctl controlled from "/proc/sys/kernel/sched_itmt_enabled" to debugfs at "/sys/kernel/debug/x86/sched_itmt_enabled" with a notable change that a cat on the file will return "Y" or "N" instead of "1" or "0" to indicate that feature is enabled or disabled respectively. Either "0" or "N" (or any string that kstrtobool() interprets as false) can be written to the file will disable the feature, and writing either "1" or "Y" (or any string that kstrtobool() interprets as true) will enable it back when the platform supports ITMT ranking. Since ITMT is x86 specific (and PowerPC uses SD_ASYM_PACKING too), the toggle was moved to "/sys/kernel/debug/x86/" as opposed to "/sys/kernel/debug/sched/" Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Tim Chen <tim.c.chen@linux.intel.com> Link: https://lore.kernel.org/r/20241223043407.1611-4-kprateek.nayak@amd.com |
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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 reStructuredText 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.