#define read_barrier() asm volatile("bcr 15,0" : : : "memory")
#define write_barrier() asm volatile("bcr 15,0" : : : "memory")
+/*
+ * Fio needs monotonic (never lower), but not strict monotonic (never the same)
+ * so store clock fast is enough
+ */
static inline unsigned long long get_cpu_clock(void)
{
unsigned long long clk;
- __asm__ __volatile__("stck %0" : "=Q" (clk) : : "cc");
- return clk;
+ __asm__ __volatile__("stckf %0" : "=Q" (clk) : : "cc");
+ return clk>>12;
}
+#define ARCH_CPU_CLOCK_CYCLES_PER_USEC 1
+#define ARCH_HAVE_CPU_CLOCK
+
#define ARCH_HAVE_INIT
extern int tsc_reliable;
static inline int arch_init(char *envp[])
return 0;
}
-#define ARCH_HAVE_CPU_CLOCK
-
#endif