diff options
Diffstat (limited to 'arch/s390/include/asm/timex.h')
| -rw-r--r-- | arch/s390/include/asm/timex.h | 37 |
1 files changed, 22 insertions, 15 deletions
diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h index b62d8c4ec022..de8298800722 100644 --- a/arch/s390/include/asm/timex.h +++ b/arch/s390/include/asm/timex.h @@ -98,21 +98,28 @@ struct ptff_qui { unsigned int pad_0x5c[41]; } __packed; -static inline int ptff(void *ptff_block, size_t len, unsigned int func) -{ - typedef struct { char _[len]; } addrtype; - register unsigned int reg0 asm("0") = func; - register unsigned long reg1 asm("1") = (unsigned long) ptff_block; - int rc; - - asm volatile( - " .word 0x0104\n" - " ipm %0\n" - " srl %0,28\n" - : "=d" (rc), "+m" (*(addrtype *) ptff_block) - : "d" (reg0), "d" (reg1) : "cc"); - return rc; -} +/* + * ptff - Perform timing facility function + * @ptff_block: Pointer to ptff parameter block + * @len: Length of parameter block + * @func: Function code + * Returns: Condition code (0 on success) + */ +#define ptff(ptff_block, len, func) \ +({ \ + struct addrtype { char _[len]; }; \ + register unsigned int reg0 asm("0") = func; \ + register unsigned long reg1 asm("1") = (unsigned long) (ptff_block);\ + int rc; \ + \ + asm volatile( \ + " .word 0x0104\n" \ + " ipm %0\n" \ + " srl %0,28\n" \ + : "=d" (rc), "+m" (*(struct addrtype *) reg1) \ + : "d" (reg0), "d" (reg1) : "cc"); \ + rc; \ +}) static inline unsigned long long local_tick_disable(void) { |