PTR_SUB           242 arch/mips/include/asm/asm.h #define PTR_SUB		sub
PTR_SUB           267 arch/mips/include/asm/asm.h #define PTR_SUB		dsub
PTR_SUB            25 arch/s390/kernel/crash_dump.c #define PTR_SUB(x, y) (((char *) (x)) - ((unsigned long) (y)))