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When supported, "mbm_event" counter assignment mode offers "num_mbm_cntrs" number of counters that can be assigned to RMID, event pairs and monitor bandwidth usage as long as it is assigned. Add the functionality to allocate and assign a counter to an RMID, event pair in the domain. Also, add the helper rdtgroup_assign_cntrs() to assign counters in the group. Log the error message "Failed to allocate counter for <event> in domain <id>" in /sys/fs/resctrl/info/last_cmd_status if all the counters are in use. Exit on the first failure when assigning counters across all the domains. Signed-off-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Link: https://lore.kernel.org/cover.1757108044.git.babu.moger@amd.com |
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| README | ||
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.