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This patch adds a framework by which plugins can
export information about CPU <-> cluster (aka
scheduling domain) per cluster.
/proc/litmus/domains/<domain#>: This file contains a CPU
mask describing the CPUs scheduled/managed by that domain.
Files are named by index. For example, the first scheduling
domain would be '0'.
/proc/litmus/cpus/<cpus#>: This file contains a domain
mask describing which domains manage this CPU. Normally,
only one bit will be set in this mask, but overlapping clusters
can also be expressed by setting multiple bits.
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This patch adds the core of LITMUS^RT:
- library functionality (heaps, rt_domain, prioritization, etc.)
- budget enforcement logic
- job management
- system call backends
- virtual devices (control page, etc.)
- scheduler plugin API (and dummy plugin)
This code compiles, but is not yet integrated with the rest of Linux.
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