Add support for configuring cpuset partition type via the CPUSetPartition= unit file setting. This controls the kernel's cpuset.cpus.partition cgroup attribute. The setting takes one of "member", "root", or "isolated". This is useful for real-time workloads that require dedicated CPU resources without interference from other processes. When set, systemd will write the partition type to the cpuset.cpus.partition cgroup file. If the kernel rejects the value (e.g., due to partition hierarchy rules), a warning is logged and the unit continues with the kernel's default partition type. Co-developed-by: Claude Sonnet 4.5 <noreply@anthropic.com> Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
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