Almost entirely borrowed from the x86 code.
Main improvement is to avoid having to initialize
ts->tv_nsec to zero before the sequence loops, by
expanding timespec_add_ns().
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
---
arch/sparc/vdso/vclock_gettime.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/sparc/vdso/vclock_gettime.c b/arch/sparc/vdso/vclock_gettime.c
index 7b5bf63fc0f5..7b539ceebe13 100644
--- a/arch/sparc/vdso/vclock_gettime.c
+++ b/arch/sparc/vdso/vclock_gettime.c
@@ -138,7 +138,6 @@ notrace static __always_inline int do_realtime(struct vvar_data *vvar,
unsigned long seq;
u64 ns;
- ts->tv_nsec = 0;
do {
seq = vvar_read_begin(vvar);
ts->tv_sec = vvar->wall_time_sec;
@@ -147,7 +146,8 @@ notrace static __always_inline int do_realtime(struct vvar_data *vvar,
ns >>= vvar->clock.shift;
} while (unlikely(vvar_read_retry(vvar, seq)));
- timespec_add_ns(ts, ns);
+ ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);
+ ts->tv_nsec = ns;
return 0;
}
@@ -158,7 +158,6 @@ notrace static __always_inline int do_monotonic(struct vvar_data *vvar,
unsigned long seq;
u64 ns;
- ts->tv_nsec = 0;
do {
seq = vvar_read_begin(vvar);
ts->tv_sec = vvar->monotonic_time_sec;
@@ -167,7 +166,8 @@ notrace static __always_inline int do_monotonic(struct vvar_data *vvar,
ns >>= vvar->clock.shift;
} while (unlikely(vvar_read_retry(vvar, seq)));
- timespec_add_ns(ts, ns);
+ ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);
+ ts->tv_nsec = ns;
return 0;
}
--
2.19.1.328.g5a0cc8aca
