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eb6f318769
To initialise struct resctrl_schema's num_closid, schemata_list_create() reaches into the architectures private structure to retrieve num_closid from the struct rdt_hw_resource. The 'half the closids' behaviour should be part of the filesystem parts of resctrl that are the same on any architecture. struct resctrl_schema's num_closid should include any correction for CDP. Having two properties called num_closid is likely to be confusing when they have different values. Add a helper to read the resource's num_closid from the arch code. This should return the number of closid that the resource supports, regardless of whether CDP is in use. Once the CDP resources are merged, schemata_list_create() can apply the correction itself. Using a type with an obvious size for the arch helper means changing the type of num_closid to u32, which matches the type already used by struct rdtgroup. reset_all_ctrls() does not use resctrl_arch_get_num_closid(), even though it sets up a structure for modifying the hardware. This function will be part of the architecture code, the maximum closid should be the maximum value the hardware has, regardless of the way resctrl is using it. All the uses of num_closid in core.c are naturally part of the architecture specific code. Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Jamie Iles <jamie@nuviainc.com> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Tested-by: Babu Moger <babu.moger@amd.com> Link: https://lkml.kernel.org/r/20210728170637.25610-9-james.morse@arm.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 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.