get_cycles() needs to be defined

as volatile instruction set, else compiler code moves it out of loops.

get_cycles() needs to be defined
as volatile instruction set, else compiler code moves it out of loops.
69ebd261 · Kanoj Sarcar · David S. Miller · cee48bdc · 69ebd261
Commit 69ebd261 authored Apr 07, 2002 by Kanoj Sarcar Committed by David S. Miller Apr 07, 2002
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include/asm-sparc64/timex.h include/asm-sparc64/timex.h +1 -1

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--- a/include/asm-sparc64/timex.h
+++ b/include/asm-sparc64/timex.h
@@ -16,7 +16,7 @@
 typedef unsigned long cycles_t;
 #define get_cycles() \
 ({	cycles_t ret; \
-	__asm__("rd	%%tick, %0" : "=r" (ret)); \
+	__asm__ __volatile__("rd	%%tick, %0" : "=r" (ret)); \
 	ret; \
 })