Xiangyu Chen focused on stabilizing Linux 6.6 builds for the zephyrproject-rtos/poky repository by addressing a kernel compatibility issue. He backported and applied a patch to lttng-modules, resolving a sched_stat_runtime compile error introduced by recent kernel changes. Using C and leveraging expertise in build systems and patch management, Xiangyu adjusted conditional compilation around the sched_stat_runtime tracepoint to ensure compatibility across multiple Linux kernel versions. His work enabled successful oe-core builds and reduced CI failures, supporting smoother downstream integration. The depth of his contribution lay in understanding kernel internals and maintaining build stability in a complex, evolving development environment.