[LinuxPPS] Re: [PATCH 1/1] LinuxPPS: Pulse per Second support for Linux

[Udo van den Heuvel]

Rodolfo Giometti wrote:
>> pps_core: start sending reply to ID -4098...
>> pps_core: ... reply sent (180)
>> pps_core: capture assert seq #546 for source 0
>> 8250: serial8250: PPS assert event at 789498 on source #0
>> pps_core: New message from PID 10052 (flags 0)
>> pps_core: PPS_FETCH: source 0
>> pps_core: start sending reply to ID 10052...
>> pps_core: ... reply sent (180)
>> pps_core: capture clear seq #547 for source 0
>> 8250: serial8250: PPS clear event at 789548 on source #0
>>
>> ntpd has pid  10052  but reply goes elsewhere?
> 
> It seems you have another process reading PPS data...

With a negative pid? How to find out what process?
How come it stops when I killall ntpd?
And restarts when I start ntpd?