From: Andreas Krebbel <[email protected]>
[S390] get_clock inline assembly.
Add missing volatile to the get_clock / get_cycles inline assemblies
to avoid that consecutive calls get optimized away.
Signed-off-by: Andreas Krebbel <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
---
include/asm-s390/timex.h | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff -urpN linux-2.6/include/asm-s390/timex.h linux-2.6-patched/include/asm-s390/timex.h
--- linux-2.6/include/asm-s390/timex.h 2006-06-18 03:49:35.000000000 +0200
+++ linux-2.6-patched/include/asm-s390/timex.h 2006-07-18 13:40:45.000000000 +0200
@@ -19,7 +19,7 @@ static inline cycles_t get_cycles(void)
{
cycles_t cycles;
- __asm__("stck 0(%1)" : "=m" (cycles) : "a" (&cycles) : "cc");
+ __asm__ __volatile__ ("stck 0(%1)" : "=m" (cycles) : "a" (&cycles) : "cc");
return cycles >> 2;
}
@@ -27,7 +27,7 @@ static inline unsigned long long get_clo
{
unsigned long long clk;
- __asm__("stck 0(%1)" : "=m" (clk) : "a" (&clk) : "cc");
+ __asm__ __volatile__ ("stck 0(%1)" : "=m" (clk) : "a" (&clk) : "cc");
return clk;
}
-
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