From 19832d244954189c851d8492718607a14734679c Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sun, 21 Oct 2018 22:38:56 -0700 Subject: sparc: Several small VDSO vclock_gettime.c improvements. 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 --- arch/sparc/vdso/vclock_gettime.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'arch/sparc') 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; } -- cgit v1.2.3