Prashant Mahajan contributed to the google/perfetto repository by addressing a compatibility issue affecting Qualcomm targets with older Linux headers. He implemented a backward-compatible guard for the VMADDR_FLAG_TO_HOST flag in C++, ensuring that the codebase remains portable across devices running pre-5.11 kernels. By conditionally assigning svm_flags only when the flag is defined, Prashant prevented build failures and preserved VSOCK VM-to-VM functionality. His work focused on cross-platform development and system programming, reducing downstream maintenance and enhancing reliability. This targeted bug fix demonstrated a thoughtful approach to maintaining upstream alignment while supporting legacy environments in a complex, multi-platform codebase.