diff options
author | Arnd Bergmann <arnd@arndb.de> | 2019-10-24 23:35:28 +0200 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2019-11-15 14:38:28 +0100 |
commit | e6071b182df0622636b9cd97a80038a495ccb06f (patch) | |
tree | 70b1bf9445eb52df16df360f6fa1822683ebe8c7 /arch/nds32 | |
parent | 21346564ccad17b928cf0d51584608531d91d298 (diff) | |
download | linux-e6071b182df0622636b9cd97a80038a495ccb06f.tar.bz2 |
y2038: vdso: nds32: open-code timespec_add_ns()
The nds32 vdso is now the last user of the deprecated timespec_add_ns().
Change it to an open-coded version like the one it already uses in
do_realtime(). What we should really do though is to use the
generic vdso implementation that is now used in x86. arm and mips.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/nds32')
-rw-r--r-- | arch/nds32/kernel/vdso/gettimeofday.c | 33 |
1 files changed, 15 insertions, 18 deletions
diff --git a/arch/nds32/kernel/vdso/gettimeofday.c b/arch/nds32/kernel/vdso/gettimeofday.c index 687abc7145f5..9ec03cf0ec54 100644 --- a/arch/nds32/kernel/vdso/gettimeofday.c +++ b/arch/nds32/kernel/vdso/gettimeofday.c @@ -81,22 +81,20 @@ static notrace int do_realtime_coarse(struct __kernel_old_timespec *ts, static notrace int do_monotonic_coarse(struct __kernel_old_timespec *ts, struct vdso_data *vdata) { - struct timespec tomono; u32 seq; + u64 ns; do { seq = vdso_read_begin(vdata); - ts->tv_sec = vdata->xtime_coarse_sec; - ts->tv_nsec = vdata->xtime_coarse_nsec; - - tomono.tv_sec = vdata->wtm_clock_sec; - tomono.tv_nsec = vdata->wtm_clock_nsec; + ts->tv_sec = vdata->xtime_coarse_sec + vdata->wtm_clock_sec; + ns = vdata->xtime_coarse_nsec + vdata->wtm_clock_nsec; } while (vdso_read_retry(vdata, seq)); - ts->tv_sec += tomono.tv_sec; - timespec_add_ns(ts, tomono.tv_nsec); + ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns); + ts->tv_nsec = ns; + return 0; } @@ -135,26 +133,25 @@ static notrace int do_realtime(struct __kernel_old_timespec *ts, struct vdso_dat static notrace int do_monotonic(struct __kernel_old_timespec *ts, struct vdso_data *vdata) { - struct timespec tomono; - u64 nsecs; + u64 ns; u32 seq; do { seq = vdso_read_begin(vdata); ts->tv_sec = vdata->xtime_clock_sec; - nsecs = vdata->xtime_clock_nsec; - nsecs += vgetsns(vdata); - nsecs >>= vdata->cs_shift; + ns = vdata->xtime_clock_nsec; + ns += vgetsns(vdata); + ns >>= vdata->cs_shift; - tomono.tv_sec = vdata->wtm_clock_sec; - tomono.tv_nsec = vdata->wtm_clock_nsec; + ts->tv_sec += vdata->wtm_clock_sec; + ns += vdata->wtm_clock_nsec; } while (vdso_read_retry(vdata, seq)); - ts->tv_sec += tomono.tv_sec; - ts->tv_nsec = 0; - timespec_add_ns(ts, nsecs + tomono.tv_nsec); + ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns); + ts->tv_nsec = ns; + return 0; } |