diff options
| author | Richard Cochran <richardcochran@gmail.com> | 2011-02-01 13:52:20 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-02-02 15:28:18 +0100 |
| commit | 094aa1881fdc1b8889b442eb3511b31f3ec2b762 (patch) | |
| tree | 2eec808286e2f57eff45178741ba3ea048de7c37 /kernel | |
| parent | c528f7c6c208f1fae6b4025957173dec045e5f21 (diff) | |
| download | linux-094aa1881fdc1b8889b442eb3511b31f3ec2b762.tar.bz2 | |
ntp: Add ADJ_SETOFFSET mode bit
This patch adds a new mode bit into the timex structure. When set, the bit
instructs the kernel to add the given time value to the current time.
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Acked-by: John Stultz <johnstul@us.ibm.com>
LKML-Reference: <20110201134320.688829863@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/time/ntp.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index ed8cfdf16983..5ac593267a26 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -648,6 +648,17 @@ int do_adjtimex(struct timex *txc) hrtimer_cancel(&leap_timer); } + if (txc->modes & ADJ_SETOFFSET) { + struct timespec delta; + if ((unsigned long)txc->time.tv_usec >= NSEC_PER_SEC) + return -EINVAL; + delta.tv_sec = txc->time.tv_sec; + delta.tv_nsec = txc->time.tv_usec; + if (!(txc->modes & ADJ_NANO)) + delta.tv_nsec *= 1000; + timekeeping_inject_offset(&delta); + } + getnstimeofday(&ts); write_seqlock_irq(&xtime_lock); |