On Wed, Jun 11, 2014 at 06:07:08PM +0200, Miroslav Lichvar wrote:
>
> This is mainly useful when other time sources are available on the
> system (e.g. NTP, hardware reference clocks, or other PTP domains)
> and a fallback to/from PTP is needed.
So, this would let ntpd mix PTP and NTP sources together?
What about adjusting the PHC?
Rebase? I get:
Applying: Add new servo for NTP SHM reference clock.
error: patch failed: phc2sys.c:43
error: phc2sys.c: patch does not apply
> +static double ntpshm_sample(struct servo *servo,
> + int64_t offset,
> + uint64_t local_ts,
> + enum servo_state *state)
> +{
> + struct ntpshm_servo *s = container_of(servo, struct ntpshm_servo,
> servo);
> + uint64_t clock_ts = local_ts - offset;
> +
> + s->shm->mode = 1;
> + s->shm->count++;
> + s->shm->valid = 0;
> + /* TODO: write memory barrier */
How can this be done in user space?
Thanks,
Richard
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