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ebac4655 JA |
1 | #ifndef ARCH_S390_H |
2 | #define ARCH_S390_H | |
3 | ||
cca84643 | 4 | #define FIO_ARCH (arch_s390) |
ebac4655 | 5 | |
1cffeb6f | 6 | #define nop asm volatile("nop" : : : "memory") |
db6defc7 | 7 | #define read_barrier() asm volatile("bcr 15,0" : : : "memory") |
44c47feb | 8 | #define write_barrier() asm volatile("bcr 15,0" : : : "memory") |
ebac4655 | 9 | |
15cf40b2 DH |
10 | static inline unsigned long long get_cpu_clock(void) |
11 | { | |
12 | unsigned long long clk; | |
13 | ||
81795ce3 CE |
14 | #ifdef CONFIG_S390_Z196_FACILITIES |
15 | /* | |
16 | * Fio needs monotonic (never lower), but not strict monotonic (never | |
17 | * the same) so store clock fast is enough. | |
18 | */ | |
919e789d | 19 | __asm__ __volatile__("stckf %0" : "=Q" (clk) : : "cc"); |
81795ce3 CE |
20 | #else |
21 | __asm__ __volatile__("stck %0" : "=Q" (clk) : : "cc"); | |
22 | #endif | |
919e789d | 23 | return clk>>12; |
15cf40b2 DH |
24 | } |
25 | ||
919e789d CE |
26 | #define ARCH_CPU_CLOCK_CYCLES_PER_USEC 1 |
27 | #define ARCH_HAVE_CPU_CLOCK | |
96170421 | 28 | #undef ARCH_CPU_CLOCK_WRAPS |
919e789d | 29 | |
15cf40b2 DH |
30 | #define ARCH_HAVE_INIT |
31 | extern int tsc_reliable; | |
32 | static inline int arch_init(char *envp[]) | |
33 | { | |
34 | tsc_reliable = 1; | |
35 | return 0; | |
36 | } | |
37 | ||
ebac4655 | 38 | #endif |