sys_getpgrp       144 arch/arm64/include/asm/unistd32.h __SYSCALL(__NR_getpgrp, sys_getpgrp)
sys_getpgrp      1077 include/linux/syscalls.h asmlinkage long sys_getpgrp(void);
sys_getpgrp      1918 tools/include/nolibc/nolibc.h 	pid_t ret = sys_getpgrp();