sys_sbrk           95 kernel/syscall.c extern uint64 sys_sbrk(void);
sys_sbrk          122 kernel/syscall.c   [SYS_sbrk]    = sys_sbrk,
sys_sbrk          155 user/ulib.c      return sys_sbrk(n, SBRK_EAGER);
sys_sbrk          161 user/ulib.c      return sys_sbrk(n, SBRK_LAZY);
sys_sbrk           24 user/user.h    char *sys_sbrk(int, int);