During November 2024, Abrehman contributed to the sched-ext/scx repository by enhancing CPU mask scalability and improving BPF CPU iteration ergonomics. He expanded the cpumask capacity from 4 to 128 bits, addressing mask overflow issues and enabling reliable scheduling on large-core systems. Abrehman also introduced standardized iterator macros, for_each_possible_cpu() and for_each_online_cpu(), simplifying CPU mask iteration within the BPF environment. Working primarily in C and leveraging skills in BPF, kernel development, and system programming, his work improved scheduler reliability and scalability. These changes allowed sched-ext/scx to support larger environments with minimal risk of CPU mask limitations or related bugs.