pub fn tree_meta(generation: u64, nr_nodes: usize, active: u64) -> u64Expand description
Serialize the committed-tree meta value from its parts.
The bit layout mirrors struct mlfq_tree_ctrl in src/bpf/intf.h:
bit 0 the trained bit (always set by a publish), bit 1 the active
buffer index, bits 8..31 the node count and bits 32..63 the
generation. The active bit is the caller’s decision (the inactive
buffer index); the trained bit is constant because this function is
only used for a publish.