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| author | Heiko Carstens <hca@linux.ibm.com> | 2024-11-07 16:11:35 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2024-11-13 14:31:31 +0100 |
| commit | 81c54fc570fe7eb5ab66f8a4f7b8d515e2426cf4 (patch) | |
| tree | 7be34e74f3cedb46c1ca56ee401f1fa2bd79105a /arch/s390/include/asm | |
| parent | 34c4812366edaa8383efc3221f35d713a3ee1ced (diff) | |
| download | linux-stable-81c54fc570fe7eb5ab66f8a4f7b8d515e2426cf4.tar.gz linux-stable-81c54fc570fe7eb5ab66f8a4f7b8d515e2426cf4.tar.bz2 linux-stable-81c54fc570fe7eb5ab66f8a4f7b8d515e2426cf4.zip | |
s390/time: Convert to use flag output macros
Use flag output macros in inline asm to allow for better code generation if
the compiler has support for the flag output constraint.
Reviewed-by: Juergen Christ <jchrist@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
| -rw-r--r-- | arch/s390/include/asm/timex.h | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h index 640901f2fbc3..8fe56456feab 100644 --- a/arch/s390/include/asm/timex.h +++ b/arch/s390/include/asm/timex.h @@ -13,6 +13,7 @@ #include <linux/preempt.h> #include <linux/time64.h> #include <asm/lowcore.h> +#include <asm/asm.h> /* The value of the TOD clock for 1.1.1970. */ #define TOD_UNIX_EPOCH 0x7d91048bca000000ULL @@ -44,11 +45,12 @@ static inline int set_tod_clock(__u64 time) int cc; asm volatile( - " sck %1\n" - " ipm %0\n" - " srl %0,28\n" - : "=d" (cc) : "Q" (time) : "cc"); - return cc; + " sck %[time]\n" + CC_IPM(cc) + : CC_OUT(cc, cc) + : [time] "Q" (time) + : CC_CLOBBER); + return CC_TRANSFORM(cc); } static inline int store_tod_clock_ext_cc(union tod_clock *clk) @@ -56,11 +58,12 @@ static inline int store_tod_clock_ext_cc(union tod_clock *clk) int cc; asm volatile( - " stcke %1\n" - " ipm %0\n" - " srl %0,28\n" - : "=d" (cc), "=Q" (*clk) : : "cc"); - return cc; + " stcke %[clk]\n" + CC_IPM(cc) + : CC_OUT(cc, cc), [clk] "=Q" (*clk) + : + : CC_CLOBBER); + return CC_TRANSFORM(cc); } static __always_inline void store_tod_clock_ext(union tod_clock *tod) @@ -149,12 +152,11 @@ struct ptff_qui { " lgr 0,%[reg0]\n" \ " lgr 1,%[reg1]\n" \ " ptff\n" \ - " ipm %[rc]\n" \ - " srl %[rc],28\n" \ - : [rc] "=&d" (rc), "+m" (*(struct addrtype *)reg1) \ + CC_IPM(rc) \ + : CC_OUT(rc, rc), "+m" (*(struct addrtype *)reg1) \ : [reg0] "d" (reg0), [reg1] "d" (reg1) \ - : "cc", "0", "1"); \ - rc; \ + : CC_CLOBBER_LIST("0", "1")); \ + CC_TRANSFORM(rc); \ }) static inline unsigned long local_tick_disable(void) |