recipes/linux/linux-kexecboot-2.6.24/0001-time-prevent-the-loop-in-timespec_add_ns-from-bei.patch


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Index: linux-2.6.24/include/linux/time.h
===================================================================
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -172,6 +172,10 @@ static inline void timespec_add_ns(struct timespec *a, u64 ns)
 {
	ns += a->tv_nsec;
	while(unlikely(ns >= NSEC_PER_SEC)) {
+		/* The following asm() prevents the compiler from
+		 * optimising this loop into a modulo operation.  */
+		asm("" : "+r"(ns));
+
		ns -= NSEC_PER_SEC;
		a->tv_sec++;
	}