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These data structures initially resided in the sched-ext repo (https://github.com/sched-ext/scx) and have been adapted to the internal libarena build system. The data structures are: - Red black tree: Fundamental tree data structure that can also serve as a base for more domain-specific data structures. - Lev-Chase deque: Queue data structure that allows efficient work stealing, useful in scheduling scenarios. The data structures are accompanied by selftests that are automatically discovered by the existing libarena test_progs selftest and incorporated in the CI. Emil Tsalapatis (2): selftests/bpf: libarena: Add rbtree data structure selftests/bpf: libarena: Add Lev-Chase queue data structure .../bpf/libarena/include/libarena/lvqueue.h | 33 + .../bpf/libarena/include/libarena/rbtree.h | 89 ++ .../bpf/libarena/selftests/st_lvqueue.bpf.c | 194 ++++ .../bpf/libarena/selftests/st_rbtree.bpf.c | 974 ++++++++++++++++ .../selftests/bpf/libarena/src/lvqueue.bpf.c | 241 ++++ .../selftests/bpf/libarena/src/rbtree.bpf.c | 1032 +++++++++++++++++ 6 files changed, 2563 insertions(+) create mode 100644 tools/testing/selftests/bpf/libarena/include/libarena/lvqueue.h create mode 100644 tools/testing/selftests/bpf/libarena/include/libarena/rbtree.h create mode 100644 tools/testing/selftests/bpf/libarena/selftests/st_lvqueue.bpf.c create mode 100644 tools/testing/selftests/bpf/libarena/selftests/st_rbtree.bpf.c create mode 100644 tools/testing/selftests/bpf/libarena/src/lvqueue.bpf.c create mode 100644 tools/testing/selftests/bpf/libarena/src/rbtree.bpf.c -- 2.54.0