X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=arch%2Farch-s390.h;h=2c205de3a8455f04b1b9a5729b63dce70547aa61;hp=fe5179134891d66d944797ee8132f2a306e4513c;hb=919e789d0999bf13ef1ae670c536d2aef3709894;hpb=cca84643cc10cd72b0b453ff92ccb8643ba51493

diff --git a/arch/arch-s390.h b/arch/arch-s390.h
index fe517913..2c205de3 100644
--- a/arch/arch-s390.h
+++ b/arch/arch-s390.h
@@ -22,4 +22,27 @@
 #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__("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[])
+{
+	tsc_reliable = 1;
+	return 0;
+}
+
 #endif