Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

[sfrench/cifs-2.6.git] / include / linux / time.h

diff --git a/include/linux/time.h b/include/linux/time.h
index 6a5f503b4f1d6a7fbed3175f88aa3110ff1e6ea6..d32ef0ad4c0aaf8964d94abe215c5dbf4dde8aaf 100644 (file)
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -92,7 +92,7 @@ static inline struct timespec timespec_sub(struct timespec lhs,
 
 extern struct timespec xtime;
 extern struct timespec wall_to_monotonic;
-extern seqlock_t xtime_lock __attribute__((weak));
+extern seqlock_t xtime_lock;
 
 extern unsigned long read_persistent_clock(void);
 extern int update_persistent_clock(struct timespec now);
@@ -120,8 +120,9 @@ extern void getboottime(struct timespec *ts);
 extern void monotonic_to_bootbased(struct timespec *ts);
 
 extern struct timespec timespec_trunc(struct timespec t, unsigned gran);
-extern int timekeeping_is_continuous(void);
+extern int timekeeping_valid_for_hres(void);
 extern void update_wall_time(void);
+extern void update_xtime_cache(u64 nsec);
 
 /**
  * timespec_to_ns - Convert timespec to nanoseconds
@@ -173,6 +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++;
        }