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x86/resctrl: Add a separate schema list for resctrl

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Resctrl exposes schemata to user-space, which allow the control values
to be specified for a group of tasks.

User-visible properties of the interface, (such as the schemata names
and how the values are parsed) are rooted in a struct provided by the
architecture code. (struct rdt_hw_resource). Once a second architecture
uses resctrl, this would allow user-visible properties to diverge
between architectures.

These properties should come from the resctrl code that will be common
to all architectures. Resctrl has no per-schema structure, only struct
rdt_{hw_,}resource. Create a struct resctrl_schema to hold the
rdt_resource. Before a second architecture can be supported, this
structure will also need to hold the schema name visible to user-space
and the type of configuration values for resctrl.

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/20210728170637.25610-4-james.morse@arm.com
This commit is contained in:
James Morse
2021-07-28 17:06:16 +00:00
committed by Borislav Petkov
parent 792e0f6f78
commit cdb9ebc917
3 changed files with 54 additions and 1 deletions
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11
include/linux/resctrl.h
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@@ -153,4 +153,15 @@ struct rdt_resource {
};
/**
* struct resctrl_schema - configuration abilities of a resource presented to
* user-space
* @list: Member of resctrl_schema_all.
* @res: The resource structure exported by the architecture to describe
* the hardware that is configured by this schema.
*/
struct resctrl_schema {
struct list_head list;
struct rdt_resource *res;
};
#endif /* _RESCTRL_H */