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authorDavid S. Miller <davem@davemloft.net>2008-03-17 23:44:31 -0700
committerDavid S. Miller <davem@davemloft.net>2008-03-17 23:44:31 -0700
commit2f633928cbba8a5858bb39b11e7219a41b0fbef5 (patch)
tree9a82f4b7f2c3afe4b0208d8e44ea61bae90a7d22 /include/linux/time.h
parent5e226e4d9016daee170699f8a4188a5505021756 (diff)
parentbde4f8fa8db2abd5ac9c542d76012d0fedab050f (diff)
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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'include/linux/time.h')
-rw-r--r--include/linux/time.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/time.h b/include/linux/time.h
index 2091a19f1655..d32ef0ad4c0a 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -174,6 +174,10 @@ 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++;
}