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3b49c37a2f
Resctrl uses local memory bandwidth event as input to the feedback loop when the mba_MBps mount option is used. This means that this mount option cannot be used on systems that only support monitoring of total bandwidth. Prepare to allow users to choose the input event independently for each CTRL_MON group by adding a global variable "mba_mbps_default_event" used to set the default event for each CTRL_MON group, and a new field "mba_mbps_event" in struct rdtgroup to track which event is used for each CTRL_MON group. Notes: 1) Both of these are only used when the user mounts the filesystem with the "mba_MBps" option. 2) Only check for support of local bandwidth event when initializing mba_mbps_default_event. Support for total bandwidth event can be added after other routines in resctrl have been updated to handle total bandwidth event. [ bp: Move mba_mbps_default_event extern into the arch header. ] Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Tested-by: Babu Moger <babu.moger@amd.com> Link: https://lore.kernel.org/r/20241206163148.83828-3-tony.luck@intel.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.