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-rw-r--r--arch/s390/include/asm/timex.h32
1 files changed, 17 insertions, 15 deletions
diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h
index 8ad8af91503..8beee1cceba 100644
--- a/arch/s390/include/asm/timex.h
+++ b/arch/s390/include/asm/timex.h
@@ -71,30 +71,32 @@ static inline void local_tick_enable(unsigned long long comp)
typedef unsigned long long cycles_t;
-static inline unsigned long long get_tod_clock(void)
+static inline void get_tod_clock_ext(char clk[16])
{
- unsigned long long clk;
-
-#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES
- asm volatile(".insn s,0xb27c0000,%0" : "=Q" (clk) : : "cc");
-#else
- asm volatile("stck %0" : "=Q" (clk) : : "cc");
-#endif
- return clk;
-}
+ typedef struct { char _[sizeof(clk)]; } addrtype;
-static inline void get_tod_clock_ext(char *clk)
-{
- asm volatile("stcke %0" : "=Q" (*clk) : : "cc");
+ asm volatile("stcke %0" : "=Q" (*(addrtype *) clk) : : "cc");
}
-static inline unsigned long long get_tod_clock_xt(void)
+static inline unsigned long long get_tod_clock(void)
{
unsigned char clk[16];
get_tod_clock_ext(clk);
return *((unsigned long long *)&clk[1]);
}
+static inline unsigned long long get_tod_clock_fast(void)
+{
+#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES
+ unsigned long long clk;
+
+ asm volatile("stckf %0" : "=Q" (clk) : : "cc");
+ return clk;
+#else
+ return get_tod_clock();
+#endif
+}
+
static inline cycles_t get_cycles(void)
{
return (cycles_t) get_tod_clock() >> 2;
@@ -125,7 +127,7 @@ extern u64 sched_clock_base_cc;
*/
static inline unsigned long long get_tod_clock_monotonic(void)
{
- return get_tod_clock_xt() - sched_clock_base_cc;
+ return get_tod_clock() - sched_clock_base_cc;
}
/**